CN101567733B - Equipment for realizing content filtering of simulating multimedia broadcasting - Google Patents

Equipment for realizing content filtering of simulating multimedia broadcasting Download PDF

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CN101567733B
CN101567733B CN2009100849489A CN200910084948A CN101567733B CN 101567733 B CN101567733 B CN 101567733B CN 2009100849489 A CN2009100849489 A CN 2009100849489A CN 200910084948 A CN200910084948 A CN 200910084948A CN 101567733 B CN101567733 B CN 101567733B
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signal
data
circuit
memory bank
multimedia
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CN101567733A (en
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须清
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Beijing Paragon Technology Co Ltd
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Beijing Paragon Technology Co Ltd
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Abstract

The invention provides an equipment for realizing content filtering of simulating multimedia broadcasting, comprising a multimedia signal input circuit, a tuning circuit, a signal storage delay circuit, wherein the multimedia signal input circuit receives digital multimedia broadcasting signals; the output of the multimedia signal input circuit is connected with the tuning circuit; the output of the tuning circuit is connected with the signal storage delay circuit; the signal storage delay circuit digitalizes the multimedia input signals output by the tuning circuit into multimedia data and stores the multimedia data in a storage; and when reaching a certain capacity, the stored multimedia data is read and is synthesized into multimedia signals which are then output, and the multimedia input signals are digitalized into multimedia data continuously in the output process of multimedia signals and are stored in the storage. The equipment realizes that a receiver filters unneeded content according to own preference under the demand of minimum delay time and minimum storage capacity so as to improve receiving experience of the receiver.

Description

Realize the equipment of content filtering of simulating multimedia broadcasting
Technical field
The present invention relates to realize the equipment of content filtering of simulating multimedia broadcasting, particularly relate to and adopt the method that storage delay is play and storage is simultaneously play simultaneously to realize the equipment that multimedia broadcast contents filters.
Background technology
Along with the development of electronic technology, information technology, broadcast singal develops into simulation cable broadcasting signal, analog satellite broadcast singal, digital radio broadcast signal, digital cable broadcast signal, digital satellite broadcasting signal from initial artificial antenna broadcast singal.And the content of broadcasting comprises and makes people receive multimedia broadcast contents through multiple channel by the multimedia broadcast contents that multiple information such as audio frequency, video, data constitutes.
On the other hand, broadcast operator can be inserted advertising message or teaser or tail information usually for the development of self in the broadcast singal content; For the recipient, these advertising messages are useful sometimes, as the information guiding of shopping goods; In the time of but more; The recipient does not hope to see advertising message, because these advertising messages had both prolonged the time that acceptance needs content, has interrupted the content that is receiving again.As watching a pbs film, because the advertising message of inserting makes the time of watching pbs film, and the advertising message of the inserting interference and the plot continuity that people watch film of having broken, influence is for the viewing quality of movie contents.
How can make the broadcast singal recipient give up the problem that the advertising message of getting wherein often becomes the puzzlement recipient effectively according to the needs of oneself.Some receiving equipment manufacturers have developed the receiving equipment with broadcast singal content stores playing function, the broadcast singal content is stored in advance, and then plays the content stored, when running into advertising message through F.F. mode skip advertisements information.The problem that existing storage playback devices exists, 1) because storage and broadcast can not be worked simultaneously, can miss in progress program during broadcast; 2) need whole performance recordings that the whole series comprise advertising message be got off just to watch the full content of program during programs stored; Requirement for memory capacity is very big; Its memory capacity is required memory capacity of non-Pgmtime and the required memory capacity sum of Pgmtime; The cost of storage playback devices is improved, watch the time of delay of program oversize, be i.e. the airtime of whole set program during time of delay.
Summary of the invention
Technical problem to be solved by this invention is how to filter out the unwanted information in the broadcast singal content at the broadcast singal receiving terminal effectively; Improving the recipient and appreciate the quality of broadcasted content and to save time, and solve some problems that prior art exists effectively like advertisement.The present invention adopts for broadcast singal and adopts the method for storage delay broadcast and the content information that the continuation storage is being broadcasted when playing to realize minimum delay time and minimum storage capacity requirement for the broadcast singal content play, and the while can be filtered unwanted content in the broadcast again effectively.
Term explanation: broadcast singal; Be meant through the signal of one-way transmissions such as wireless transmitting station, wire cable, optical cable, satellite, comprise analog broadcast signal, analog television broadcast signal, analog broadcasting data-signal, digital broadcast signal, digital broadcasting-television signal, digital broadcast data signal.
The term explanation: multimedia broadcast signal is meant to comprise one of following signal in the broadcast singal at least: audio signal, voice signal, voice signal, music signal, vision signal, picture signal, picture signal, literal, data, facsimile signal etc.
The term explanation: the simulation multimedia broadcast signal is meant with the broadcast singal of analog signal as signal source.
The term explanation: digital multimedia broadcasting signal is meant with the broadcast singal of digital signal as signal source.
Term explanation: unwanted content in the broadcast singal; Be to watch at that time hope and different according to different recipients; The advertising message of inserting in playing like telecine, the sheet header of TV play, the run-out information of TV play, the recommended information of film/TV play etc. are meant all information except people accept the information content that the broadcast singal of certain period hopes to watch.
The term explanation: demodulation module, in DMB receives, with digital multimedia signal isolated software function module or hardware circuit from the carrier signal of transmission.
The term explanation: demultiplexing module in DMB receives, separates into multiplexed digital multimedia signal together the software function module or the hardware circuit of a plurality of single channel multi-media signals.
The term explanation: decoder module, in DMB received, the multi-media signal that will pass through encoding process carried out software function module or the hardware circuit that decoding processing obtains multi-medium data.
The term explanation: descrambling module, in DMB received, the multi-medium data that will pass through encryption carried out software function module or the hardware circuit that decryption processing obtains multi-medium data.
For addressing the above problem, the technical solution that proposes for analog broadcast signal is:
1, a kind of method that realizes content filtering of simulating multimedia broadcasting is handled for the simulation multimedia broadcast signal, it is characterized in that comprising the steps:
The first step: receive the simulation multimedia broadcast signal through tuning circuit;
Second step: will simulate multimedia broadcast signal and sample and be digitized as multi-medium data;
The 3rd step: said multi-medium data is deposited in the memory bank;
The 4th step: after postponing a period of time from said memory bank reading of data synthesize multi-media signal output, and in reading of data from said memory bank, continue to simulate multimedia broadcast signal and sample and be digitized as multi-medium data and said multi-medium data is deposited in the memory bank;
Said memory bank satisfies in said sampling and digitization time interval can accomplish a data storage function and a data read functions at least.
2, when the memory bank that adopts is the dual-port memory bank, a kind of method that realizes content filtering of simulating multimedia broadcasting is handled for the simulation multimedia broadcast signal, it is characterized in that comprising the steps:
The first step: receive the simulation multimedia broadcast signal through tuning circuit;
Second step: will simulate multimedia broadcast signal and sample and be digitized as multi-medium data;
The 3rd step: said multi-medium data is deposited in the dual-port memory bank, and the data writing operation of said dual-port memory bank and read data operation can independently be carried out simultaneously;
The 4th step: after postponing a period of time from said dual-port memory bank reading of data synthesize multi-media signal output, and in reading of data from said dual-port memory bank, continue to simulate multimedia broadcast signal and sample and be digitized as multi-medium data and said multi-medium data is deposited in the said dual-port memory bank;
Said dual-port memory bank satisfies can accomplish a data storage function and a data read functions at least in said sampling time interval.
3, when the memory bank that adopts is the high speed storing body, a kind of method that realizes content filtering of simulating multimedia broadcasting is handled for the simulation multimedia broadcast signal, it is characterized in that comprising the steps:
The first step: receive the simulation multimedia broadcast signal through tuning circuit;
Second step: will simulate multimedia broadcast signal and sample and be digitized as multi-medium data;
The 3rd step: said multi-medium data is deposited in the high speed storing body, and the data writing operation of said high speed storing body and read data operation are carried out through same FPDP;
The 4th step: after postponing a period of time from said high speed storing body reading of data synthesize multi-media signal output, and in reading of data from said high speed storing body, continue to simulate multimedia broadcast signal and sample and be digitized as multi-medium data and said multi-medium data is deposited in the said high speed storing body;
Said high speed storing body satisfies can accomplish a data storage function and a data read functions at least in said sampling time interval.
4, when the memory bank that adopts is the displacement memory bank, a kind of method that realizes content filtering of simulating multimedia broadcasting is handled for the simulation multimedia broadcast signal, it is characterized in that comprising the steps:
The first step: receive the simulation multimedia broadcast signal through tuning circuit;
Second step: will simulate multimedia broadcast signal and sample and be digitized as multi-medium data;
The 3rd step: said multi-medium data is deposited in the displacement memory bank; The write data port and the data reading port of said displacement memory bank are separated, and all data cells of a said displacement memory bank of data writing operation of every completion move a data bit from the write data port to data reading port;
The 4th step: the data reading port reading of data from said displacement memory bank after postponing a period of time synthesizes multi-media signal output, and in reading of data from said displacement memory bank, continues to simulate multimedia broadcast signal and sample and be digitized as multi-medium data and said multi-medium data is deposited in the said displacement memory bank;
Said displacement memory bank satisfies can accomplish a data storage function and a data read functions at least in said sampling time interval.
5, further be also to comprise data that the address of selecting reading of data exports needs in the 4th step to be read or the data that need not export are not read.
6, further be to control the speed that reads different pieces of information in the 4th step.
7, said simulation multimedia broadcast signal comprises and does not hope the information that receives, and the capacity of said memory bank can be stored the part or all of data behind the said information digitalization of not hoping to receive at least.
8, in further said the 4th step when recorded content reaches the memory bank heap(ed) capacity, the content that has stored new content covering front.
9, said multimedia broadcast signal is analog video broadcasts signal and/or analogue audio frequency broadcast television signal.
10, said multimedia broadcast signal is light signal broadcasting or the broadcasting of microwave signal via satellite of broadcasting or pass through optical cable through wireless signal broadcasting or through wired electric signal.
11, further said multimedia broadcast signal is wireless simulation television broadcasting signal or wired analog tv broadcast signal or satellite microwave analog tv broadcast signal.
12, further said multimedia broadcast signal is wireless simulation audio broadcast signal or wired analogue audio frequency broadcast singal or satellite microwave analogue audio frequency broadcast singal.
13, a kind of method that realizes that multimedia broadcast contents filters is handled for the simulation multimedia broadcast signal, comprises the steps:
The first step: setting need be watched the channel of multimedia broadcast contents;
Second step: according to required zero-time of watching the broadcast zero-time setting content record storage of multimedia broadcast contents;
The 3rd step: according in the multimedia broadcast contents not the approximate time length of needs content confirm to watch time of delay of said multimedia broadcast contents;
The 4th step: when said broadcast zero-time satisfies, carry out signal demodulation, digitlization and be stored in the memory bank for said multimedia broadcast contents, the capacity of said memory bank can be stored the capacity of the multimedia broadcast contents of said time of delay of length at least;
The 5th step: when satisfying said time of delay, the record storage starting point from said memory bank begins to read memory contents;
The 6th step: the memory contents that is read is converted into multi-media signal plays and/or show;
The 7th step: play and/or during the multi-media signal that shows, it is follow-up from multimedia broadcast contents to continue the record storage; When recorded content reached the memory bank heap(ed) capacity, new content covered the content that has stored the front;
The 8th step; Run into the mode of employing F.F. when not needing content in the multimedia broadcast contents or the mode of address choice in the broadcast and skip unwanted content;
Said memory bank satisfies in said digitized sampling can accomplish a data storage function and a data read functions at least in the time interval, to guarantee storage and to play and can carry out simultaneously.
For addressing the above problem, the technical solution that proposes for digital broadcast signal is:
1, a kind of method that realizes content filtering of digital multimedia broadcasting is handled for digital multimedia broadcasting signal, it is characterized in that comprising the steps:
The first step: through the tuning circuit receiving digital multimedia broadcast;
Second step: from digital multimedia broadcasting signal, extract multi-medium data;
The 3rd step: said multi-medium data is deposited in the memory bank;
The 4th step: after postponing a period of time from said memory bank reading of data synthesize multi-media signal output, and in reading of data from said memory bank, continue from digital multimedia broadcasting signal, to extract multi-medium data and said multi-medium data be deposited in the memory bank;
The satisfied multi-medium data that from digital multimedia broadcasting signal, extracts of said memory bank can be accomplished a data storage function and a data read functions at least in the time interval.
2, when the memory bank that adopts was the dual-port memory bank, a kind of method that realizes content filtering of digital multimedia broadcasting was handled for digital multimedia broadcasting signal, it is characterized in that comprising the steps:
The first step: through the tuning circuit receiving digital multimedia broadcast;
Second step: from digital multimedia broadcasting signal, extract multi-medium data;
The 3rd step: said multi-medium data is deposited in the dual-port memory bank, and the data writing operation of said dual-port memory bank and read data operation can independently be carried out simultaneously;
The 4th step: after postponing a period of time from said dual-port memory bank reading of data synthesize multi-media signal output, and in reading of data from said dual-port memory bank, continue from digital multimedia broadcasting signal, to extract multi-medium data and said multi-medium data be deposited in the said dual-port memory bank;
The satisfied multi-medium data that from digital multimedia broadcasting signal, extracts of said dual-port memory bank can be accomplished a data storage function and a data read functions at least in the time interval.
3, when the memory bank that adopts was the high speed storing body, a kind of method that realizes content filtering of simulating multimedia broadcasting was handled for digital multimedia broadcasting signal, it is characterized in that comprising the steps:
The first step: through the tuning circuit receiving digital multimedia broadcast;
Second step: from digital multimedia broadcasting signal, extract multi-medium data;
The 3rd step: said multi-medium data is deposited in the high speed storing body, and the data writing operation of said high speed storing body and read data operation are carried out through same FPDP;
The 4th step: after postponing a period of time from said high speed storing body reading of data synthesize multi-media signal output, and in reading of data from said high speed storing body, continue from digital multimedia broadcasting signal, to extract multi-medium data and said multi-medium data be deposited in the said high speed storing body;
The satisfied multi-medium data that from digital multimedia broadcasting signal, extracts of said high speed storing body can be accomplished a data storage function and a data read functions at least in the time interval.
4, when the memory bank that adopts was the displacement memory bank, a kind of method that realizes content filtering of simulating multimedia broadcasting was handled for digital multimedia broadcasting signal, it is characterized in that comprising the steps:
The first step: through the tuning circuit receiving digital multimedia broadcast;
Second step: from digital multimedia broadcasting signal, extract multi-medium data;
The 3rd step: said multi-medium data is deposited in the displacement memory bank; The write data port and the data reading port of said displacement memory bank are separated, and all data cells of a said displacement memory bank of data writing operation of every completion move a data bit from the write data port to data reading port;
The 4th step: the data reading port reading of data from said displacement memory bank after postponing a period of time synthesizes multi-media signal output, and continuation is extracted multi-medium data and said multi-medium data is deposited in the said displacement memory bank from digital multimedia broadcasting signal in reading of data from said displacement memory bank;
The satisfied multi-medium data that from digital multimedia broadcasting signal, extracts of said displacement memory bank can be accomplished a data storage function and a data read functions at least in the time interval.
5, further be also to comprise data that the address of selecting reading of data exports needs in said the 4th step to be read or the data that need not export are not read; Can also control the speed that reads different pieces of information in perhaps said the 4th step.
6, further be that digital multimedia broadcasting signal comprises and do not hope the information that receives, the capacity of said memory bank can be stored the total data behind the said information digitalization of not hoping to receive at least.
7, further be in the 4th step when recorded content reaches the memory bank heap(ed) capacity, the content that has stored new content covering front.
8, further be that said multimedia broadcast signal is digital video broadcast signal and/or digital audio broadcasting TV signal; Said multimedia broadcast signal is light signal broadcasting or the broadcasting of microwave signal via satellite of broadcasting or pass through optical cable through wireless signal broadcasting or through wired electric signal.
9, further be that said multimedia broadcast signal is wireless digital TV-set broadcast signal or cable digital TV broadcast singal or satellite microwave digital TV broadcast signal or wireless digital audio broadcast signal or cabled digital audio broadcast signal or satellite microwave digital audio broadcasting signal.
10, a kind of method that realizes that multimedia broadcast contents filters is handled for digital multimedia broadcasting signal, it is characterized in that comprising the steps:
The first step: setting need be watched the channel of multimedia broadcast contents;
Second step: according to required zero-time of watching the broadcast zero-time setting content record storage of multimedia broadcast contents;
The 3rd step: according in the multimedia broadcast contents not the approximate time length of needs content confirm to watch time of delay of said multimedia broadcast contents;
The 4th step: when said broadcast zero-time satisfies; Carry out signal demodulation, demultiplexing, decoding, scramble process for said multimedia broadcast contents and obtain digitized multi-medium data and be stored in the memory bank, the capacity of said memory bank can be stored the capacity of the multimedia broadcast contents of said time of delay of length at least; Said memory bank satisfies can accomplish a data storage function and a data read functions at least in the time interval of said digitized multi-medium data requirement; Because multi-media signal carries out digitlization at the broadcast signal transmission end; And digitlization is to adopt with quantized data by certain time interval to obtain, and is that analog signal also need realize by the certain time interval reading of data with data transaction when digital medium information is play.The memory bank that the present invention requires to use can be accomplished a data storage function and a data read functions at least in this time interval, to guarantee storage and to play and can carry out simultaneously.
The 5th step: when satisfying said time of delay, the record storage starting point from said memory bank begins to read memory contents;
The 6th step: the memory contents that is read is converted into multi-media signal plays and/or show;
The 7th step: play and/or during the multi-media signal that shows, it is follow-up from multimedia broadcast contents to continue the record storage; When recorded content reached the memory bank heap(ed) capacity, new content covered the content that has stored the front;
The 8th step; Run in the broadcast and adopt the mode of F.F. to skip unwanted content when not needing content in the multimedia broadcast contents;
11, above-mentioned multimedia broadcast signal is digital video broadcast signal and/or digital audio broadcasting TV signal.
12, above-mentioned multimedia broadcast contents is to broadcast or broadcast through wired electric signal broadcasting or through the light signal of optical cable or through the light signal of optical fiber through wireless signal.
13, above-mentioned multimedia broadcast contents is the light signal broadcast digital TV contents of optical fiber perhaps in the light signal broadcast digital TV of optical cable perhaps in radio broadcasting digital TV contents or the wired electric signal broadcast digital TV.
14, above-mentioned multimedia broadcast contents is radio broadcasting digital video and/or the light signal broadcast figure video of digital audio content or wired electric signal broadcast figure video and/or digital audio content or optical cable and/or the light signal broadcast digital video and/or the digital audio content of digital audio content or optical fiber.
In order further to understand technology contents of the present invention, explain as follows:
Time spot or the non-Pgmtime of supposing a programs are T1, and the program time itself is T2, and then the memory capacity of memory circuit only need be recorded the memory capacity of T1 time.And only need T1 the time of delay of watching program.Optimum state is, after the performance recording T1 time, begin to play the program of storage, and the performance recording function continues still, and no matter the content of non-Pgmtime is to insert any time point of program, all can skip non-Pgmtime through forwarding operation.Further analyze as follows:
1) non-Pgmtime is that T1 concentrates the starting point that is positioned at this programs, and when then program recording T1 began after the time to play the program of storage, forwarding operation directly strode across the content of non-Pgmtime immediately.
2) non-Pgmtime is that T1 concentrates the ending be positioned at this programs, and when then program recording T1 began after the time to play the program of storage, after program ends, the forwarding operation content that directly strides across non-Pgmtime got into next program immediately.
3) non-Pgmtime is that T1 concentrates the centre that is positioned at this programs; When then program recording T1 begins after the time to play the program of storage; When running into non-Pgmtime content, forwarding operation directly strides across the content that the content of non-Pgmtime gets into Pgmtime immediately.
4) non-Pgmtime is a plurality of positions of the T1 centre of inserting this programs at random; When then program recording T1 begins after the time to play the program of storage; When running into non-Pgmtime content, forwarding operation directly strides across the content that the content of non-Pgmtime gets into Pgmtime immediately.
Total time like a programs is 60 minutes, supposes that wherein inserting the time spot is 20 minutes, 40 minutes programme content time; Then only need be after program begins, the beginning recorded program content, record 20 minutes after; Begin to play the content of storage, in the process of playing storage, continue the follow-up content of programs stored; The storage policy of program data is, after memory contents reaches the memory bank total capacity, adopts the mode of circulation storage, and promptly memory address more from the off.Because play from the content of starting point storage, therefore the content of follow-up storage can cover the content of earlier stored.
The memory bank that is adopted among the present invention has multiple solution:
One of solution is the dual-port memory bank, and a port carries out write operation, and another port can carry out read operation simultaneously.
Memory address X, lowest address X0, memory capacity N, superlatively the location is XN, as memory address X during less than the XN of location superlatively of memory capacity, broadcast address is S0=X0; When X continues to increase, get back to address X0, promptly be the variation of mould value with address XN.When the X circulation is X0, sign r=1 is set, S0=X+1 plays the time-delay that starting point and storage starting point differ a memory capacity like this.If in broadcast, adopt F.F., like F.F. Nm, advance M of corresponding address, S0=S0+M then makes and plays the time-delay that starting point and storage starting point differ a memory capacity-M, when repeatedly F.F. makes S0=X, the content that the content of seeing is at that time to be play.
Two of solution is quick storage bodies, and the time that data write memory bank adds that time sum that data are read is equal to or less than sampled point blanking time, and promptly digitized sampling point can be accomplished a write operation and a read operation in blanking time.
Three of solution is displacement memory banks; Comprise input data-interface and dateout interface; Input data-interface and dateout interface lay respectively at the top and the bottom of the stored logic of memory bank, when writing data, write memory bank from the input data port that is positioned at the top; Each write operation all is that data all in the memory bank move a data position toward the memory bank bottom, and data reach the bottom of memory bank and promptly export from data output.
Adopt the foregoing invention method for the simulation multimedia broadcast signal, can design the electronic equipment of realizing information filtering or the scheme of device:
1, a kind of electronic equipment of realizing information filtering; Comprise the multi-media signal input circuit; Receive simulation multimedia broadcast signal, tuning circuit; Said tuning circuit, signal storage delay circuit are received in the output of said multi-media signal input circuit, and the output of said tuning circuit connects said signal storage delay circuit; Said signal storage delay circuit will be stored in the memory bank after will being digitized as multi-medium data from the multimedia input signal of said tuning circuit output; After the multi-medium data of storage reaches certain capacity; Multi-media signal output is read and synthesized to the multi-medium data of being stored, and continuation after being digitized as multi-medium data, the multimedia input signal is stored in the memory bank in the process of multi-media signal output.
2, the implementation of said signal storage delay circuit is to comprise multi-media signal digitizer, multimedia memory circuit, control circuit, multi-media signal combiner circuit; The simulation multimedia broadcast signal is sent to the multi-media signal input circuit through wired or wireless mode; Tuning circuit is received in output through the multi-media signal input circuit; Under the control of control circuit, make tuning circuit work in the tuning output signal of required channel; Tuning then output signal by multi-media signal digitizer converting multimedia storage in the memory bank of multimedia memory circuit; Reach the memory capacity of setting when the multi-medium data that stores the multimedia memory circuit into after; Under the control of control circuit, the multi-medium data of having stored begun to read from the starting point of storage be sent to multi-media signal combiner circuit converting multimedia signal, then multi-media signal is delivered to the multi-media signal output circuit and carry out outputing to playback equipment after the Signal Matching and play.
3, a kind of priority scheme of said multimedia memory circuit is to comprise dual-ported memory spare, can carry out read operation and write operation simultaneously; The address wire of the address wire of said dual-ported memory spare and data wire and said dual-ported memory spare write operation and data wire are fully independently.
4, second of said multimedia memory circuit kind of priority scheme is to comprise one-port memory spare, and the change-over time of said multi-media signal digitizer is more than or equal to the memory cell write-operation time and the memory cell read operation time sum of memory bank.
5, the third priority scheme of said multimedia memory circuit is to comprise shift memory spare; Said shift memory spare comprises input data-interface and dateout interface; Input data-interface and dateout interface lay respectively at the top and the bottom of the stored logic of memory bank; When writing data; Write memory bank from the input data port that is positioned at the top, each write operation all is that data all in the memory bank move a data position toward the memory bank bottom, and data reach the bottom of memory bank and promptly export from data output.
Adopt the foregoing invention method for digital multimedia broadcasting signal, can design the electronic equipment of realizing information filtering or the scheme of device:
1, a kind of electronic equipment of realizing information filtering; Comprise the multi-media signal input circuit; Receiving digital multimedia broadcast, tuning circuit; Said tuning circuit, signal storage delay circuit are received in the output of said multi-media signal input circuit, and the output of said tuning circuit connects said signal storage delay circuit; Said signal storage delay circuit is stored in the memory bank after from the multimedia input signal, extracting multi-medium data; After the multi-medium data of storage reaches the capacity of setting; Multi-media signal output is read and synthesized to the multi-medium data of being stored, and be stored in the memory bank after in the process of multi-media signal output, continuing from the multimedia input signal, to extract multi-medium data.
2, the implementation of said signal storage delay circuit is to comprise multi-medium data to extract circuit, multimedia memory circuit, control circuit, multi-media signal combiner circuit; Digital multimedia broadcasting signal is sent to the multi-media signal input circuit through wired or wireless mode; Tuning circuit is received in output through the multi-media signal input circuit; Under the control of control circuit, make tuning circuit work in the tuning output signal of required channel; Tuning then output signal extracts the circuit extraction multi-medium data by multi-medium data and stores the multimedia memory circuit into; Reach the memory capacity of setting when the multi-medium data that stores the multimedia memory circuit into after; Under the control of control circuit, the multi-medium data of having stored begun to read from the starting point of storage be sent to multi-media signal combiner circuit converting multimedia signal, then multi-media signal is delivered to the multi-media signal output circuit and carry out outputing to playback equipment after the Signal Matching and play.
3, said multi-medium data extraction circuit comprises demodulation module, demultiplexing module, decoder module and descrambling module.
4, a kind of priority scheme of said multimedia memory circuit is to comprise dual-ported memory spare, can carry out read operation and write operation simultaneously; The address wire of the address wire of said dual-ported memory spare and data wire and said dual-ported memory spare write operation and data wire are fully independently.
5, second of said multimedia memory circuit kind of priority scheme is to comprise one-port memory spare, and said multi-medium data extracts memory cell write-operation time and the memory cell read operation time sum of the extraction data time of circuit more than or equal to memory bank.
6, the third priority scheme of said multimedia memory circuit is to comprise shift memory spare; Said shift memory spare comprises input data-interface and dateout interface; Input data-interface and dateout interface lay respectively at the top and the bottom of the stored logic of memory bank; When writing data; Write memory bank from the input data port that is positioned at the top, each write operation all is that data all in the memory bank move a data position toward the memory bank bottom, and data reach the bottom of memory bank and promptly export from data output.
Adopt the foregoing invention method for the simulation multimedia broadcast signal; Can design the simulation multimedia broadcast signal receiving equipment of realizing information filtering; Its scheme is to comprise tuning receiving circuit, storage delay circuit and multi-media signal output circuit; The multi-media signal that wherein receives through tuning receiving circuit is digitized as under the storage in said storage delay circuit; And read data behind the delay certain hour again and synthesize multi-media signal from multi-media signal output circuit output, and the multi-media signal that in the process of reading data, receives through tuning receiving circuit is continued to be fed into the storage delay circuit and in said storage delay circuit, is digitized as under the storage.
Said simulation multimedia broadcast signal receiving equipment comprises radio television set, wired television receiver, satellite television receiver, the radiovision receiving card of dataphone interface is arranged, the cable TV receiving card of dataphone interface, the satellite television receiving card that the dataphone interface is arranged, mobile multimedia receiving terminal, vehicle mounted multimedia receiving terminal is arranged.Typical product comprises television receiver, mobile TV receiving terminal, tv receiver card etc.
Adopt the foregoing invention method for digital multimedia broadcasting signal; Can design the digital multimedia broadcasting signal receiving equipment of realizing information filtering; Its scheme is to comprise tuning receiving circuit, storage delay circuit and multi-media signal output circuit; The multi-media signal that wherein receives through tuning receiving circuit extracts multi-medium data and stores in said storage delay circuit; And read data behind the delay certain hour again and synthesize multi-media signal from multi-media signal output circuit output, and the multi-media signal that in the process of reading data, receives through tuning receiving circuit is continued to be fed into the storage delay circuit and in said storage delay circuit, extracts multi-medium data and store.
Said digital multimedia broadcasting signal receiving equipment comprises the wireless digital TV-set receiver; The cable digital TV receiver; Satellite digital tv receiver; The wireless digital TV-set receiving set up box; The cable digital TV receiving set up box; The satellite digital tv receiver top box; The wireless digital TV-set receiving card that the dataphone interface is arranged; The cable digital TV receiving card that the dataphone interface is arranged; The satellite digital TV receiving card that the dataphone interface is arranged; The mobile multimedia receiving terminal; The vehicle mounted multimedia receiving terminal.Typical product comprises digital television receiver, cellphone multimedia receiving terminal, DTV receiving card etc.
Beneficial effect of the present invention: adopt technology of the present invention can make the multimedia broadcast signal recipient under time of delay of minimum and minimum memory bank capacity requirement, filter out unwanted content, to improve recipient's reception experience according to own hobby.Comprising 1 specifically) memory capacity reduces a lot, and required memory capacity only needs the required memory capacity of non-Pgmtime; 2) can not miss in progress program during watch programs; 3) the performance recording time is short in advance, only needs the length of non-Pgmtime; 4) watch programs shortening time of delay, the length that only need postpone non-Pgmtime just can watch programs.
Description of drawings:
Fig. 1 is first kind of scheme operation principle of storage delay circuit sketch map of treatment of simulated multi-media signal of the present invention.
Fig. 2 is a displacement memory circuitry stores data procedures sketch map of the present invention.
Fig. 3 is a displacement memory circuit operation principle sketch map of the present invention.
Fig. 4 is second kind of scheme operation principle of storage delay circuit sketch map of treatment of simulated multi-media signal of the present invention.
Fig. 5 is a dual-port memory circuitry stores data procedures sketch map of the present invention.
Fig. 6 is a dual-port memory circuit operation principle sketch map of the present invention.
Fig. 7 is the third scheme operation principle sketch map of storage delay circuit of treatment of simulated multi-media signal of the present invention.
Fig. 8 is a high speed storing circuit working principle schematic of the present invention.
Fig. 9 is the simulated television receiving system operation principle sketch map that adopts the storage delay circuit.
Figure 10 is the digital TV receiving system operation principle sketch map that adopts the storage delay circuit.
Figure 11 is the DTV STB operation principle sketch map that adopts the storage delay circuit.
Figure 12 is first kind of scheme operation principle of storage delay circuit sketch map that the present invention handles digital multimedia signal.
Figure 13 is second kind of scheme operation principle of storage delay circuit sketch map that the present invention handles digital multimedia signal.
Figure 14 is the third scheme operation principle sketch map of storage delay circuit that the present invention handles digital multimedia signal.
Embodiment:
Core point of the present invention is; With multimedia broadcast signal storage earlier; Read broadcast then; And make follow-up multimedia broadcast signal when playing, continue to be stored, thereby can reduce memory capacity and can filter out unwanted content, improve recipient's reception and experience according to recipient's needs.
Further describe specific embodiments of the present invention below in conjunction with accompanying drawing.
Fig. 1 is first kind of scheme operation principle of storage delay circuit sketch map of treatment of simulated multi-media signal of the present invention.The simulation multimedia broadcast signal is delivered to tuning receiving circuit 101 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 101 can receive the multi-media signal that works in certain channel when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 100 and is handled then, and storage delay circuit 100 comprises multi-media signal digitizer 102, displacement memory circuit 103, multi-media signal combiner circuit 104 and control circuit 105.Comprise the displacement memory bank in the displacement memory circuit 103, multi-media signal is carried out the conversion of analog signal to digital signal by multi-media signal digitizer 102, is output as digitized multi-medium data, and multi-medium data is stored in the displacement memory circuit 103.Displacement memory circuit 103 has certain storage depth; Storage operation of every completion; The data data memory space that all moves forward of displacement memory bank; When data move on to the displacement memory bank foremost the time, data are delivered to the multi-media signal output that synthesizes in the multi-media signal combiner circuit 104 through postponing with the data of output then from the output of this port.Under the control of control circuit 105, can control the shifting speed of different pieces of information in the displacement memory bank, thus the output speed of the control multi-medium data of storing, thereby can realize being filtered through fast moving for the content of not wanting to play or watch.Fig. 2 is a displacement memory circuitry stores data procedures sketch map of the present invention.Among Fig. 2, be that 8 data are explained as an example with the memory cell degree of depth, when storing the operation 211 of data for the first time, data are write in the 1st the data unit; When storing the operation 212 of data for the second time, original data in the 1st data unit are moved in the 2nd the data unit, and the data that newly write are write in the 1st the data unit; When storing the operation 213 of data for the third time, original data in the 2nd data unit are moved in the 3rd the data unit; Original data in the 1st data unit are moved in the 2nd the data unit, and the data that newly write are write in the 1st the data unit; Analogize the operation 217 of the operation 216 of the operation 215 of the operation 214 of carrying out the 4th storage data, the 5th storage data, the 6th storage data, the 7th storage data, the operation 218 of the 8th storage data in proper order; When storing the operation 219 of data the 9th time; Originally exported the 8th data; Original data in the 7th data unit are moved in the 8th the data unit, and original data in the 7th data unit are moved in the 8th the data unit, and original data in the 6th data unit are moved in the 7th the data unit; Original data in the 5th data unit are moved in the 6th the data unit; Original data in the 4th data unit are moved in the 5th the data unit, and original data in the 3rd data unit are moved in the 4th the data unit, and original data in the 2nd data unit are moved in the 3rd the data unit; Original data in the 1st data unit are moved in the 2nd the data unit, and the data that newly write are write in the 1st the data unit; So circulation.Fig. 3 is displacement memory circuit 103 operation principle sketch mapes of the present invention.Displacement memory circuit 103 comprises Data Input Interface 321, memory cell array 322, data output interface 323 and logic with shift control unit 324.Under the control of control circuit 105, data deposit in the memory cell array 322 through Data Input Interface 321; Control circuit 105 makes logic with shift control unit 324 output displacement control signals, makes data in memory cell array 322, accomplish shifting function; Under the control of control circuit 105, export through data output interface 323 from the data that memory cell array 322 shifts out.
Also can adopt similar processing procedure for digital multimedia broadcasting signal.Figure 12 is first kind of scheme operation principle of storage delay circuit sketch map that the present invention handles digital multimedia signal.Digital multimedia broadcasting signal is delivered to tuning receiving circuit 1201 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 1201 can receive the multi-media signal that works in certain frequency when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 1200 and is handled then, and storage delay circuit 1200 comprises multi-medium data and extracts circuit 1202, displacement memory circuit 103, multi-media signal combiner circuit 104 and control circuit 1205.Comprise the displacement memory bank in the displacement memory circuit 103; Digital multimedia signal is carried out demodulation, demultiplexing, decoding and scramble process by multi-medium data extraction circuit 1202 and extracts multi-medium data; Be output as multi-medium data, multi-medium data is stored in the displacement memory circuit 103.Displacement memory circuit 103 has certain storage depth; Storage operation of every completion; The data data memory space that all moves forward of displacement memory bank; When data move on to the displacement memory bank foremost the time, data are delivered to the multi-media signal output that synthesizes in the multi-media signal combiner circuit 104 through postponing with the data of output then from the output of this port.Under the control of control circuit 1205, can control the shifting speed of different pieces of information in the displacement memory bank, thus the output speed of the control multi-medium data of storing, thereby can realize being filtered through fast moving for the content of not wanting to play or watch.Because before digital multimedia broadcasting signal is launched/is sent; Be to handle multi-medium data through scrambling process (encryption), digital coding processing, data multiplex; Be modulated in the high frequency carrier then, so multi-medium data extracts circuit 1202 and need comprise demodulation process, demultiplexing processing, decoding processing and scramble process (decryption processing) and extract multi-medium data.Digital multimedia signal for non-encrypted channel; Usually do not carry out scrambling process (encryption); If therefore in the processing before digital multimedia broadcasting signal is launched/sent; Do not comprise scrambling process (encryption), then multi-medium data extracts in the circuit 1202 and does not also comprise scramble process (decryption processing).In addition; In the processing before digital multimedia broadcasting signal is launched/sent; When the sequencing of each processing procedure changes; Corresponding adjustment is done in the processing of correspondingly extracting in the circuit 1202 at multi-medium data, and for example: the processing sequence for multi-medium data can also be a first encoding process scrambling process again, and so much media data extracts the circuit 1202 corresponding first scramble process decoding processing again that become.
Fig. 4 is second kind of scheme operation principle of storage delay circuit sketch map of treatment of simulated multi-media signal of the present invention.The simulation multimedia broadcast signal is delivered to tuning receiving circuit 101 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 101 can receive the multi-media signal that works in certain channel when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 400 and is handled then, and storage delay circuit 400 comprises multi-media signal digitizer 102, dual-port memory circuit 403, multi-media signal combiner circuit 104 and control circuit 405.Comprise the dual-port memory bank in the dual-port memory circuit 403; Multi-media signal is carried out the conversion of analog signal to digital signal by multi-media signal digitizer 102; Be output as digitized multi-medium data, multi-medium data is stored in the dual-port memory circuit 403.The data input and the data output of dual-port memory circuit 403 can be carried out simultaneously, and data-in port is what to separate with data-out port.In the present invention; When multi-medium data is pressed the sequence of addresses storage of memory bank; Reading of data can read from any address of memory bank; Thereby can the control store volume data output starting point or skip a plurality of address reading datas, can realize neatly not wanting playing or the content of watching is filtered.The memory bank of dual-port memory circuit 403 has certain storage depth, after storage is full, will be circulated to address starting point storage, covers original data.Therefore be filled with the required time of memory bank data and can before data be capped, can be exported as long as begin to be no more than to the delay between the data output from storage.Fig. 5 is a dual-port memory circuitry stores data procedures sketch map of the present invention.Among Fig. 5, be that 8 data are explained as an example with the memory cell degree of depth, when storing the operation 411 of data for the first time, data are write in the 1st the data unit; When storing the operation 412 of data for the second time, the data that newly write are write in the 2nd the data unit; When storing the operation 413 of data for the third time, the data that newly write are write in the 3rd the data unit; Analogize the operation 417 of the operation 416 of the operation 415 of the operation 414 of carrying out the 4th storage data, the 5th storage data, the 6th storage data, the 7th storage data, the operation 418 of the 8th storage data in proper order; When the operation 419 of the 9th storage data, the data that originally newly write the 1st data cover, and the data that newly write are write in the 1st the data unit; So circulation.Fig. 6 is a dual-port memory circuit operation principle sketch map of the present invention.Dual-port memory circuit 403 comprises Data Input Interface 621, dual-port memory bank 622, data output interface 623, write data address counter 624, write address maximum setting 625, read data address counter 626, reads address maximum setting 627.Wherein the write address maximum set 625 with read the address maximum and set 627 not necessarily; In order to set the maximum delay time that is stored to broadcast if desired; Need comprise write address maximum setting 625 and read address maximum setting 627, and write address maximum setting 625 can be same parts with reading address maximum setting 627.Set 625 when reading the address maximum and set 627 when not comprising the write address maximum, with the calculating of the memory capacity of dual-port memory bank 622 as the maximum delay time that is stored to broadcast.Under the control of control circuit 405, write data address counter 624 produces memory address, and data deposit in the memory cell of corresponding stored address in the dual-port memory bank 622 through Data Input Interface 621; Under the control of control circuit 405, read data address counter 626 produces and reads the address, from dual-port memory bank 622, reads the data in the memory cell that correspondence reads the address, then through data output interface 623 dateouts;
Also can adopt similar processing procedure for digital multimedia broadcasting signal.Figure 13 is second kind of scheme operation principle of storage delay circuit sketch map that the present invention handles digital multimedia signal.Digital multimedia broadcasting signal is delivered to tuning receiving circuit 1201 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 1201 can receive the multi-media signal that works in certain frequency when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 1300 and is handled then, and storage delay circuit 1300 comprises multi-medium data and extracts circuit 1202, dual-port memory circuit 403, multi-media signal combiner circuit 104 and control circuit 1305.Comprise the dual-port memory bank in the dual-port memory circuit 403; Digital multimedia signal is carried out demodulation, demultiplexing, decoding and scramble process by multi-medium data extraction circuit 1202 and extracts multi-medium data; Be output as multi-medium data, multi-medium data is stored in the dual-port memory circuit 403.The data input and the data output of dual-port memory circuit 403 can be carried out simultaneously, and data-in port is what to separate with data-out port.In the present invention; When multi-medium data is pressed the sequence of addresses storage of memory bank; Reading of data can read from any address of memory bank; Thereby can the control store volume data output starting point or skip a plurality of address reading datas, can realize neatly not wanting playing or the content of watching is filtered.The memory bank of dual-port memory circuit 403 has certain storage depth, after storage is full, will be circulated to address starting point storage, covers original data.Therefore be filled with the required time of memory bank data and can before data be capped, can be exported as long as begin to be no more than to the delay between the data output from storage.Because before digital multimedia broadcasting signal is launched/is sent; Be to handle multi-medium data through scrambling process (encryption), digital coding processing, data multiplex; Be modulated in the high frequency carrier then, so multi-medium data extracts circuit 1202 and need comprise demodulation process, demultiplexing processing, decoding processing and scramble process (decryption processing) and extract multi-medium data.Digital multimedia signal for non-encrypted channel; Usually do not carry out scrambling process (encryption); If therefore in the processing before digital multimedia broadcasting signal is launched/sent; Do not comprise scrambling process (encryption), then multi-medium data extracts in the circuit 1202 and does not also comprise scramble process (decryption processing).In addition; In the processing before digital multimedia broadcasting signal is launched/sent; When the sequencing of each processing procedure changes; Corresponding adjustment is done in the processing of correspondingly extracting in the circuit 1202 at multi-medium data, and for example: the processing sequence for multi-medium data can also be a first encoding process scrambling process again, and so much media data extracts the circuit 1202 corresponding first scramble process decoding processing again that become.
Fig. 7 is the third scheme operation principle sketch map of storage delay circuit of treatment of simulated multi-media signal of the present invention.The simulation multimedia broadcast signal is delivered to tuning receiving circuit 101 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 101 can receive the multi-media signal that works in certain channel when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 700 and is handled then, and storage delay circuit 700 comprises multi-media signal digitizer 102, high speed storing circuit 703, multi-media signal combiner circuit 104 and control circuit 705.Comprise the high speed storing body in the high speed storing circuit 703, multi-media signal is carried out the conversion of analog signal to digital signal by multi-media signal digitizer 102, is output as digitized multi-medium data, and multi-medium data is stored in the high speed storing circuit 703.Because memory bank has only a data port; The data input of high speed storing circuit 703 and data output timesharing are carried out; But owing to be the high speed storing body; Its storage speed and reading speed are all very fast, in the present invention, change required time access time and data unit time for reading sum more than or equal to a data unit of high speed storing body as long as satisfy the sampling and the analog digital of multi-media signal digitizer 102 each data.In the present invention; When multi-medium data is pressed the sequence of addresses storage of memory bank; Reading of data can read from any address of memory bank; Thereby can the control store volume data output starting point or skip a plurality of address reading datas, can realize neatly not wanting playing or the content of watching is filtered.The memory bank of high speed storing circuit 703 has certain storage depth, after storage is full, will be circulated to address starting point storage, covers original data.Therefore be filled with the required time of memory bank data and can before data be capped, can be exported as long as begin to be no more than to the delay between the data output from storage.Fig. 8 is a high speed storing circuit working principle schematic of the present invention.High speed storing circuit 703 comprises Data Input Interface 821, high speed storing body 822, data output interface 823, write data address counter 824, write address maximum setting 825, read data address counter 826, reads address maximum setting 827 and address selector 828.Wherein the write address maximum set 825 with read the address maximum and set 827 not necessarily; In order to set the maximum delay time that is stored to broadcast if desired; Need comprise write address maximum setting 825 and read address maximum setting 827, and write address maximum setting 825 can be same parts with reading address maximum setting 827.Set 825 when reading the address maximum and set 827 when not comprising the write address maximum, with the calculating of the memory capacity of dual-port memory bank 822 as the maximum delay time that is stored to broadcast.The output of the output of write data address counter 824 and read data address counter 826 is connected respectively to address selector 828; Under the control of control circuit 405; When depositing data to high speed storing body 822 in, address selector 828 is selected the storage data address of the output of write data address counter 824 as high speed storing body 822; When from high speed storing body 822 reading of data, address selector 828 is selected the reading of data address of the output of read data address counter 826 as high speed storing body 822.Under the control of control circuit 705, write data address counter 824 produces memory address, and data deposit in the memory cell of corresponding stored address in the high speed storing body 822 through Data Input Interface 821; Under the control of control circuit 705, read data address counter 826 produces and reads the address, from high speed storing body 822, reads the data in the memory cell that correspondence reads the address, then through data output interface 823 dateouts;
Also can adopt similar processing procedure for digital multimedia broadcasting signal.Figure 14 is the third scheme operation principle sketch map of storage delay circuit that the present invention handles digital multimedia signal.Digital multimedia broadcasting signal is delivered to tuning receiving circuit 1201 to wired or wireless radiofrequency signal through the multi-media signal input circuit; Tuning receiving circuit 1201 can receive the multi-media signal that works in certain frequency when being selected work and certain operating frequency; This multi-media signal is sent into storage delay circuit 1400 and is handled then, and storage delay circuit 1400 comprises multi-medium data and extracts circuit 1202, high speed storing circuit 703, multi-media signal combiner circuit 104 and control circuit 1405.Comprise the high speed storing body in the high speed storing circuit 703; Digital multimedia signal is carried out demodulation, demultiplexing, decoding and scramble process by multi-medium data extraction circuit 1202 and extracts multi-medium data; Be output as multi-medium data, multi-medium data is stored in the high speed storing circuit 703.Because memory bank has only a data port; The data input of high speed storing circuit 703 and data output timesharing are carried out; But owing to be the high speed storing body; Its storage speed and reading speed are all very fast, in the present invention, change required time access time and data unit time for reading sum more than or equal to a data unit of high speed storing body as long as satisfy the sampling and the analog digital of multi-media signal digitizer 102 each data.In the present invention; When multi-medium data is pressed the sequence of addresses storage of memory bank; Reading of data can read from any address of memory bank; Thereby can the control store volume data output starting point or skip a plurality of address reading datas, can realize neatly not wanting playing or the content of watching is filtered.The memory bank of high speed storing circuit 703 has certain storage depth, after storage is full, will be circulated to address starting point storage, covers original data.Therefore be filled with the required time of memory bank data and can before data be capped, can be exported as long as begin to be no more than to the delay between the data output from storage.Because before digital multimedia broadcasting signal is launched/is sent; Be to handle multi-medium data through scrambling process (encryption), digital coding processing, data multiplex; Be modulated in the high frequency carrier then, so multi-medium data extracts circuit 1202 and need comprise demodulation process, demultiplexing processing, decoding processing and scramble process (decryption processing) and extract multi-medium data.Digital multimedia signal for non-encrypted channel; Usually do not carry out scrambling process (encryption); If therefore in the processing before digital multimedia broadcasting signal is launched/sent; Do not comprise scrambling process (encryption), then multi-medium data extracts in the circuit 1202 and does not also comprise scramble process (decryption processing).In addition; In the processing before digital multimedia broadcasting signal is launched/sent; When the sequencing of each processing procedure changes; Corresponding adjustment is done in the processing of correspondingly extracting in the circuit 1202 at multi-medium data, and for example: the processing sequence for multi-medium data can also be a first encoding process scrambling process again, and so much media data extracts the circuit 1202 corresponding first scramble process decoding processing again that become.
Fig. 9 is the simulated television receiving system operation principle sketch map that adopts the storage delay circuit.Simulated television receiving system or be called the simulated television receiver comprises tuning receiving circuit 901, analog signal storage delay circuit 902, video driver circuit 903, display screen 904, control circuit 907, audio drive circuitry 908, loudspeaker 909.The simulation multimedia broadcast signal that the simulated television receiving system receives comprises one of wireless simulation multimedia broadcast signal, wired simulation multimedia broadcast signal, Satellite Simulation multimedia broadcast signal or combination.These multimedia broadcast signals are delivered to tuning receiving circuit 901 through the multi-media signal input circuit; When tuning receiving circuit 901 works in certain Frequency point; Can receive and export the multi-media signal of a channel; The multi-media signal of this channel is passed in the analog signal storage delay circuit 902; In said analog signal storage delay circuit 902, be digitized as under the storage; And read data again behind the delay certain hour and synthesize multi-media signal from video driver circuit 903 and audio drive circuitry 908 outputting video signal and audio signals respectively, demonstrate the image in the multi-media signal by the display screen 904 that is connected with video driver circuit 903, play out sound or music in the multi-media signal by the loudspeaker 909 that are connected with audio drive circuitry 908.And the multi-media signal that in the process of reading data, receives through tuning receiving circuit 901 is continued to be fed into analog signal storage delay circuit 902 and in said analog signal storage delay circuit 902, is digitized as under the storage.Control circuit 907 is used to control the working frequency points of tuning receiving circuit 901 and the work-based logic of analog signal storage delay circuit 902, comprises the operation of time of delay and information filtering etc.Usually in order to be easy to control the simulated television receiver, can be equipped with the work of remote controller control simulated television receiver.Remote controller comprises remote control circuit 906 and carries out communication with control circuit 907 through wireless signal or infrared signal; The operational order of remote controller is delivered to control circuit 907, accomplishes corresponding operation by the tuning receiving circuit of control circuit 907 control 901, analog signal storage delay circuit 902 then.Sometimes for the effect of regulating display screen 904 display images and/or the audio frequency effect of loudspeaker 909, preferred version is that control circuit 907 has control signal to connect video driver circuit 903 and/or audio drive circuitry 908, does not draw among the figure.
Figure 10 is the digital TV receiving system operation principle sketch map that adopts the storage delay circuit.Digital TV receiving system or be called digital television receiver; Comprise tuning receiving circuit 1001, digital signal storage delay circuit 1002, video driver circuit 1003, display screen 1004, control circuit 1007, audio drive circuitry 1008, loudspeaker 1009, further comprise demodulation module, demultiplexing module, decoder module, descrambling module and memory bank in the digital signal storage delay circuit 1002.The digital multimedia broadcasting signal that digital TV receiving system receives comprises one of wireless digital multimedia broadcast singal, digital multimedia cable broadcast singal, digital multimedia broadcast (dmb) via satellite signal or combination.These multimedia broadcast signals are delivered to tuning receiving circuit 1001 through the multi-media signal input circuit; When tuning receiving circuit 1001 works in certain Frequency point; Can receive and export and comprise the multiplexing multi-media signal of a plurality of channels; The multi-media signal that these a plurality of channels are multiplexing extracts multi-medium data through the demodulation process of demodulation module, the demultiplexing processing of demultiplexing module, the decoding processing of decoder module, the decryption processing of descrambling module; Multi-medium data passes in the memory bank then; In said memory bank, store; And read data again behind the delay certain hour and synthesize multi-media signal from video driver circuit 1003 and audio drive circuitry 1008 outputting video signal and audio signals respectively, demonstrate the image in the multi-media signal by the display screen 1004 that is connected with video driver circuit 1003, play out sound or music in the multi-media signal by the loudspeaker 1009 that are connected with audio drive circuitry 1008.And the multi-media signal that in the process of reading data, receives through tuning receiving circuit 1001 is continued to be fed into digital signal storage delay circuit 1002 and is extracted multi-medium data and stored by said digital signal storage delay circuit 1002.Control circuit 1007 is used to control the working frequency points of tuning receiving circuit 1001 and the work-based logic of digital signal storage delay circuit 1002, comprises the operation of time of delay and information filtering etc.Usually in order to be easy to the control figure television receiver, can be equipped with the work of remote controller control figure television receiver.Remote controller comprises remote control circuit 1006 and carries out communication with control circuit 1007 through wireless signal or infrared signal; The operational order of remote controller is delivered to control circuit 1007, accomplishes corresponding operation by the tuning receiving circuit of control circuit 1007 control 1001, digital signal storage delay circuit 1002 then.Sometimes for the effect of regulating display screen 1004 display images and/or the audio frequency effect of loudspeaker 1009, preferred version is that control circuit 1007 has control signal to connect video driver circuit 1003 and/or audio drive circuitry 1008, does not draw among the figure.
When not only having comprised digital multimedia broadcasting signal in the multimedia broadcast signal but also comprise the simulation multimedia broadcast signal, those skilled in the technology concerned can be easy to digital signal storage delay circuit and analog signal storage delay circuit are integrated in the information filtering of accomplishing respectively in the system or equipment for digital multimedia broadcasting signal and the information filtering of simulating multimedia broadcast signal.
Figure 11 is the DTV STB operation principle sketch map that adopts the storage delay circuit.DTV STB comprises tuning receiving circuit 1101, digital signal storage delay circuit 1102, video driver circuit 1103, control circuit 1107, audio drive circuitry 1108, further comprises demodulation module, demultiplexing module, decoder module, descrambling module and memory bank in the digital signal storage delay circuit 1102.The digital multimedia broadcasting signal that digital TV receiving system receives comprises one of wireless digital multimedia broadcast singal, digital multimedia cable broadcast singal, digital multimedia broadcast (dmb) via satellite signal or combination.These multimedia broadcast signals are delivered to tuning receiving circuit 1101 through the multi-media signal input circuit; When tuning receiving circuit 1101 works in certain Frequency point; Can receive and export and comprise the multiplexing multi-media signal of a plurality of channels; The multi-media signal that these a plurality of channels are multiplexing extracts multi-medium data through the demodulation process of demodulation module, the demultiplexing processing of demultiplexing module, the decoding processing of decoder module, the decryption processing of descrambling module; Multi-medium data passes in the memory bank then; In said memory bank, store, and postpone behind the certain hour again to read data and synthesize multi-media signal from video driver circuit 1103 and audio drive circuitry 1108 outputting video signal and audio signals respectively.And the multi-media signal that in the process of reading data, receives through tuning receiving circuit 1101 is continued to be fed into digital signal storage delay circuit 1102 and is extracted multi-medium data and stored by said digital signal storage delay circuit 1102.Control circuit 1107 is used to control the working frequency points of tuning receiving circuit 1101 and the work-based logic of digital signal storage delay circuit 1102, comprises the operation of time of delay and information filtering etc.Usually in order to be easy to the control figure TV set-top box, can be equipped with the work of remote controller control figure TV set-top box.Remote controller comprises remote control circuit 1106 and carries out communication with control circuit 1107 through wireless signal or infrared signal; The operational order of remote controller is delivered to control circuit 1107, accomplishes corresponding operation by the tuning receiving circuit of control circuit 1107 control 1101, digital signal storage delay circuit 1102 then.Sometimes for the effect of display image and/or the effect of audio plays, preferred version is that control circuit 1107 has control signal to connect video driver circuit 1103 and/or audio drive circuitry 1108, does not draw among the figure.

Claims (10)

1. equipment of realizing content filtering of simulating multimedia broadcasting is characterized in that said equipment comprises:
The multi-media signal input circuit receives the simulation multimedia broadcast signal;
Tuning circuit; Said tuning circuit is received in the output of said multi-media signal input circuit;
Signal storage delay circuit, the output of said tuning circuit connect said signal storage delay circuit; Said signal storage delay circuit will be stored in the memory bank after will being digitized as multi-medium data from the multimedia input signal of said tuning circuit output; After the multi-medium data of storage reaches certain capacity; Record storage starting point from said memory bank begins multi-media signal output is read and synthesized to multi-medium data, and continuation is stored in the memory bank after the multimedia input signal is digitized as multi-medium data in the process of multi-media signal output; , memory contents adopts the mode of circulation storage after reaching the memory bank total capacity;
Said memory bank satisfies in the digitization time interval can accomplish a data storage function and a data read functions at least; When said memory bank is the displacement memory bank, by the shifting speed of different pieces of information in the control circuit control displacement memory bank that is included in the signal storage delay circuit, thus the output speed of the control multi-medium data of storing; When said memory bank is dual-port memory bank or high speed storing body; Reading of data can read from any address of memory bank, perhaps skips a plurality of address reading datas by the starting point that is included in the control circuit control store volume data output in the signal storage delay circuit.
2. equipment according to claim 1 is characterized in that when said memory bank is the dual-port memory bank, and the data writing operation of said dual-port memory bank and read data operation can independently be carried out simultaneously; Said dual-port memory bank satisfies at digitization time that said multimedia input signal is digitized as multi-medium data can accomplish a data storage function and a data read functions at interval at least.
3. equipment according to claim 1 is characterized in that when said memory bank is the high speed storing body, and the data writing operation of said high speed storing body and read data operation are carried out through same FPDP; Said high speed storing body satisfies at digitization time that said multimedia input signal is digitized as multi-medium data can accomplish a data storage function and a data read functions at interval at least.
4. equipment according to claim 1; It is characterized in that when said memory bank is the displacement memory bank; The write data port and the data reading port of said displacement memory bank are separated, and all data cells of a said displacement memory bank of data writing operation of every completion move a data bit from the write data port to data reading port; Said displacement memory bank satisfies at digitization time that said multimedia input signal is digitized as multi-medium data can accomplish a data storage function and a data read functions at interval at least.
5. equipment according to claim 1 is characterized in that said signal storage delay circuit comprises multi-media signal digitizer, multimedia memory circuit, control circuit, multi-media signal combiner circuit, and said multimedia memory circuit comprises said memory bank; The simulation multimedia broadcast signal is sent to said multi-media signal input circuit through wired or wireless mode; Tuning circuit is received in output through the multi-media signal input circuit; Under the control of control circuit, make said tuning circuit work in the tuning output signal of required channel; Said then tuning output signal by multi-media signal digitizer converting multimedia storage in said memory bank; Reach the memory capacity of setting when the multi-medium data that stores said memory bank into after; Under the control of control circuit, the multi-medium data of having stored begun to read from the starting point of storage be sent to multi-media signal combiner circuit converting multimedia signal, then multi-media signal is delivered to the multi-media signal output circuit and carry out outputing to playback equipment after the Signal Matching and play.
6. according to each described equipment in the claim 1 to 5, it is characterized in that simulating multimedia broadcast signal and comprise and do not hope the information that receives, the capacity of said memory bank can be stored the part or all of data behind the said information digitalization of not hoping to receive at least.
7. according to each described equipment in the claim 1 to 5, when the multi-medium data that it is characterized in that storing into said memory bank reached the memory bank heap(ed) capacity, new content covered the content that has stored the front.
8. according to each described equipment in the claim 1 to 5, it is characterized in that said simulation multimedia broadcast signal is analog video broadcasts signal and/or analogue audio frequency broadcast television signal; Said multimedia broadcast signal is light signal broadcasting or the broadcasting of microwave signal via satellite of broadcasting or pass through optical cable through wireless signal broadcasting or through wired electric signal.
9. according to each described equipment in the claim 1 to 5, it is characterized in that said simulation multimedia broadcast signal is wireless simulation television broadcasting signal or wired analog tv broadcast signal or satellite microwave analog tv broadcast signal or wireless simulation audio broadcast signal or wired analogue audio frequency broadcast singal or satellite microwave analogue audio frequency broadcast singal.
10. equipment according to claim 6 is characterized in that said simulation multimedia broadcast signal is analog video broadcasts signal and/or analogue audio frequency broadcast television signal; Said multimedia broadcast signal is light signal broadcasting or the broadcasting of microwave signal via satellite of broadcasting or pass through optical cable through wireless signal broadcasting or through wired electric signal.
CN2009100849489A 2009-06-05 2009-06-05 Equipment for realizing content filtering of simulating multimedia broadcasting Expired - Fee Related CN101567733B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1116352A (en) * 1993-06-28 1996-02-07 株式会社金星社 Apparatus and method for recording/playing back broadcasting signal
CN1312645A (en) * 2000-03-07 2001-09-12 Tcl王牌电子(深圳)有限公司 Special TV program distinguishing method and device
CN1571496A (en) * 1998-07-30 2005-01-26 提维股份有限公司 Multimedia time warping system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1116352A (en) * 1993-06-28 1996-02-07 株式会社金星社 Apparatus and method for recording/playing back broadcasting signal
CN1571496A (en) * 1998-07-30 2005-01-26 提维股份有限公司 Multimedia time warping system
CN1312645A (en) * 2000-03-07 2001-09-12 Tcl王牌电子(深圳)有限公司 Special TV program distinguishing method and device

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