CN201163798Y - Television receiver - Google Patents
Television receiver Download PDFInfo
- Publication number
- CN201163798Y CN201163798Y CNU2008200169772U CN200820016977U CN201163798Y CN 201163798 Y CN201163798 Y CN 201163798Y CN U2008200169772 U CNU2008200169772 U CN U2008200169772U CN 200820016977 U CN200820016977 U CN 200820016977U CN 201163798 Y CN201163798 Y CN 201163798Y
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- Prior art keywords
- circuit
- signal
- television receiver
- source decoder
- television
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000012545 processing Methods 0.000 claims description 20
- 230000005236 sound signal Effects 0.000 claims description 9
- 230000006870 function Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 108091006146 Channels Proteins 0.000 description 25
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The utility model discloses a television receiver, comprising a tuner, and a channel demodulation circuit and an information source decoder orderly connected with the tuner. The information source decoder is connected with a conditional receiving decoding circuit that receives data flows output by the channel demodulation circuit, decodes the encrypted signal in the data flow, and feeds back the information to the information resource decoder. The television receiver is provided with a DVB-T receiving process circuit inside the television, and the DVB-T receiving process circuit is provided with a conditional access decoding circuit, which not only achieves the function of the television to receive the digital television signal and the analog television signal and avoids the use of a set-top box, but also can detect and decode the encrypted signals in the TS flow when choosing to receive the programs of encrypted channels, thereby finally realizing the functions of the television to receive and play the programs of the digital encrypted channels, and being convenient for the daily use of users.
Description
Technical field
The utility model belongs to the television receiver technical field, specifically, but relates to the difunctional all-in-one of a kind of receiving digital television signal and anolog TV signals.
Background technology
At present, along with the maturation gradually of digital technology, the TV signal of more and more national becomes digital signal from analog-signal transitions gradually.DVB-T is the received terrestrial digital broadcasting standard that formulate in Europe, and the area of having opened the DVB-T received terrestrial digital broadcasting at present is more and more, and except that Europe, all start broadcasting in succession in areas such as Australia, Taiwan, Vietnam, and in China, also start broadcasting successively in most of city.For the simulated television in present most of user family can be received and playing digital television signal, the set-top box product arises at the historic moment.It is as the transitional product from the simulated television to the Digital Television, and the demand of existing market is very big, and price is also relatively costly.But, adopt this design in simulated television exterior arrangement set-top box, though solved the demand that present simulated television user watches digital television program, but, use extremely inconvenience, need to use two cover remote controllers control complex operation respectively to television set and set-top box, take the interior space, and cost is higher.
In order to address this problem, some television set developer is built in the DVB-T digital television signal receiving circuit in the top box of digital machine in the simulated television, thereby has solved reception and the playing function of television set to digital television program to a certain extent.But along with the progressively raising of consumer's amusement demand, increasing consumer can not be satisfied with the prescribed program that present TV station plays, and they wish to select to watch according to the hobby of oneself TV programme of a certain type.Based on this reason, released one after another polytype enciphered digital programme of radio and TV operator is selected to order for the consumer and is watched.Realize the deciphering of this ciphered program is play,, all need in set-top box, insert the deciphering card and realize that existing television set does not possess this function for present technology.This just causes those users that have digital television receiver also can't come the watching encrypted program by television set itself.
The utility model content
The utility model can not be play the problem of ciphered program in order to solve existing television receiver, a kind of novel TV receiver is provided, receive decoding circuit by in TV set circuit, setting up condition, thereby add under the prerequisite of external set top box need not, realized reception and the playing function of television set the encoded channel program.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of television receiver, comprise tuner and channel demodulation circuit that is connected successively with it and source decoder, described source decoder receives decoding circuit with a condition and is connected, described condition receives the data flow of decoding circuit receive channel demodulator circuit output, and the coded signal in the data flow is carried out feeding back to described source decoder after the decoding processing.
Wherein, include deciphering card interface circuit and decoder module in described condition reception decoding circuit, described source decoder connects the deciphering card interface circuit by decoder module, and then is connected with the deciphering card slot.
Preferably, described deciphering card adopts CI deciphering card, and described deciphering card interface circuit is the CI interface circuit, connects the CI card slot, is used to insert CI deciphering card.
Further, in described decoder module, include the hardware interface identification circuit that the HSCI condition receives, to after meeting the coded signal that deciphering requires (be password with CI card in the identical signal of password preserved) in the data flow and carrying out decoding processing, output meets the traffic spike of source decoder decodes requirement to described source decoder, and then realizes the deciphering output of ciphered program.
In order to make television receiver have the function that receives anolog TV signals and digital television signal simultaneously, in the utility model, described tuner adopts digital-analog integrated tuner to realize, receive the radiofrequency signal that TV station sends, and be converted into intermediate-freuqncy signal and export described channel demodulation circuit to.
Further, in described channel demodulation circuit, include a channel demodulation chip, receive the intermediate-freuqncy signal of tuner output, and will export described source decoder to behind its demodulation generation TS stream signal.Wherein, described channel demodulation chip is on the one hand by one road I
2The C bus connects tuner, and controls tuner work to described tuner output intermediate-frequency gain control signal; On the other hand by another road I
2The C bus connects source decoder, receives the control command of source decoder output.
After described source decoder carries out decoding processing to the TS stream signal that receives, generating decoded audio signal exports by power amplifier, described audio signal is a simulated audio signal, transfers to loud speaker output sound accompaniment by the power amplifier on the television set analog plate; The vision signal that generates after the described source decoder decodes exports video processing circuits on the television set analog plate to by video channel, and then after described video processing circuits is handled, transfers to display module driving display displaying video image.
Wherein, described video channel can be Y, U, V component vide passage or YC light tone video channel etc.
For the data message that produces in the working procedure of source decoder and the processing procedure is stored, on described source decoder, also be connected with a FLASH memory and DDRAM memory.
Compared with prior art, advantage of the present utility model and good effect are: television receiver of the present utility model is by being built into the DVB-T receiving processing circuit in the television set, can directly watch the DVB-T digital television program without set-top box by television set, thereby reduced cost, saved the space, made things convenient for user's operation.Meanwhile, receive decoding circuit, when selecting the watching encrypted channel program, can detect decoding, finally realized reception and the playing function of television set the encoded channel program to the coded signal in the TS stream by increase condition in the DVB-T receiving processing circuit.
After reading the detailed description of the utility model execution mode in conjunction with the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the internal circuit theory diagram of the television receiver that proposed of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Television receiver of the present utility model is built-in with digital decoding plate and analog mainboard two parts within it in order to realize the dual reception playing function of digital television program and analog television program in portion's circuit.Wherein, the digital decoding plate is mainly finished the demodulation sign indicating number of digital signal, comprises major parts such as digital-analog integrated tuner, channel demodulation circuit and source decoder, referring to shown in Figure 1.After the DVB-T digital television signal that sends from TV station receives by tuner, generate intermediate-freuqncy signal IFOUT1, IFOUT2 exports channel demodulation circuit to and carries out channel demodulation, and then generation includes vision signal, the TS data flow of audio signal and digital broadcast signal is sent into source decoder and is carried out demultiplexing and source coding processing, final output YUV or YC vision signal (Y_OUT, U_OUT, V_OUT or Y_OUT, C_OUT) and simulated audio signal (L_OUT, R_OUT), replace vision signal and audio signal that original analog radio frequency circuit solves respectively, send into the analog mainboard and handle, and the broadcast output of final driving display and loud speaker realization TV programme.
In order to make television receiver can receive and play the digital television program of encoded channel, the condition that also has additional on the digital decoding plate receives decoding circuit, specifically can comprise deciphering card interface circuit and decoder module two parts.Wherein, decoder module is connected between source decoder and the deciphering card interface circuit, and connects the deciphering card slot of offering on the television set by described deciphering card interface circuit.When user's watching encrypted program, at first will decipher card and be inserted in the deciphering card slot, read the code of storage in the deciphering card by the deciphering card interface circuit, such as encrypted message etc.Because the TV programme signal of encoded channel has increased password when launching in TV station, if the password that increases in the password of storage and the signal in the deciphering card is identical, think that then the user has purchased the TV programme of this encoded channel, at this moment, after the decoder module that is connected with described deciphering card interface circuit carries out decoding processing to the coded signal in the TS stream signal of channel demodulation circuit output, output meets the traffic spike of source decoder decodes requirement to described source decoder, and then realizes the deciphering output of ciphered program.
As a specific embodiment of the present utility model, described deciphering card adopts CI deciphering card commonly used at present to realize, be mated the deciphering card interface circuit that uses and be the CI interface circuit, connect the CI card slot, decoder module adopts HSCI (hardware interface that condition receives) identification circuit to realize.Described HSCI identification circuit detects the coded signal in the TS stream, if meet the requirements, when to be the password that increases in the signal identical with the password preserved in the CI card, then allow TS stream by and it is carried out decoding processing after, export source decoder to and generate simulated audio signal and analog video signal, final TV programme by analog mainboard driving loud speaker and display output encoded channel has so just reached the purpose of design by CI card watching encrypted channel digit program.
Certainly, described deciphering card and decoding circuit also can adopt the deciphering card of other types and decoder design to realize that the utility model is not limited thereto.
For the application program to source decoder is stored, and the intermediate data that produces in the source decoder running is reliably preserved, described source decoder is connected with the DDRAM memory with FLASH respectively.Wherein, the FLASH memory is stored the application program of source decoder, and the DDRAM memory is preserved the mass data that produces in the running.When television receiver start work, at first give the FLASH memory by command signal of the output of the channel demodulation chip in the channel demodulation circuit, the FLASH memory can be transferred to application program and carry out initialization among the DDRAM, enters normal operating conditions after the initialization.
In addition, in described channel demodulation chip, include two-way I
2The C bus interface, the one tunnel connects source decoder, receives the control signal of source decoder output, to realize collaborative work; Another road connects tuner, and passes through the respective pin that its IFAGC intermediate-frequency gain control signal output ends connects tuner, realizes the control to tuner, for example channel switching, gain-adjusted or the like.
The analog mainboard is provided with major parts such as video processing circuits, video amplifier circuit and audio power amplifier circuit.Wherein, vision signal by source decoder output is after Y, U, V component vide passage or YC light tone video channel export video processing circuits to and carry out video decode, generate rgb signal after video amplifier circuit amplifies, drive the work of CRT picture tube, output video image.Left and right sound channels audio signal L_OUT, R_OUT by source decoder output drives the sound accompaniment of loud speaker output program after audio power amplifier circuit carries out power amplification and handles.
Remote-control receiving circuit receives the infrared signal that remote controller sends, and sends into source decoder and video processing circuits respectively, with response user operation.
In order to guarantee the stability of digital signal required voltage in the digital decoding plate, also being provided with in described television receiver is separately the power panel that the digital decoding plate is powered, and output 3.3V, 5V, 12V direct voltage provide working power for each chip in the digital decoding plate.
The utility model is by the built-in receiving processing circuit of DVB-T cheaply in common CRT simulated television, can directly use television set to watch the DVB-T digital television signal without set-top box, have significant advantages such as circuit structure is simple, cost is low, effectively expanded the additional function of tv product.Main is that by the reception of increase condition in DVB-T receiving processing circuit decoding circuit, when selecting encoded channel, the coded signal in can flowing TS detects and decodes, and has finally reached the purpose of design that receives and play the encoded channel program.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1, a kind of television receiver, comprise tuner and channel demodulation circuit that is connected successively with it and source decoder, it is characterized in that: described source decoder receives decoding circuit with a condition and is connected, described condition receives the data flow of decoding circuit receive channel demodulator circuit output, and the coded signal in the data flow is carried out feeding back to described source decoder after the decoding processing.
2, television receiver according to claim 1, it is characterized in that: receive to include in the decoding circuit in described condition and decipher card interface circuit and decoder module, described source decoder connects the deciphering card interface circuit by decoder module, and then is connected with the deciphering card slot.
3, television receiver according to claim 2 is characterized in that: described deciphering card interface circuit is the CI interface circuit, connects the CI card slot.
4, television receiver according to claim 2, it is characterized in that: in described decoder module, include the hardware interface identification circuit that the HSCI condition receives, the coded signal that meets the deciphering requirement in the data flow is carried out exporting described source decoder to after the decoding processing.
5, according to each described television receiver in the claim 1 to 4, it is characterized in that: described tuner is digital-analog integrated tuner, receives the radiofrequency signal that TV station sends, and is converted into intermediate-freuqncy signal and exports described channel demodulation circuit to.
6, television receiver according to claim 5 is characterized in that: include a channel demodulation chip in described channel demodulation circuit, receive the intermediate-freuqncy signal of tuner output, and will export described source decoder to behind its demodulation generation TS stream signal.
7, television receiver according to claim 6 is characterized in that: described channel demodulation chip is by one road I
2The C bus connects tuner, by another road I
2The C bus connects source decoder, and to described tuner output intermediate-frequency gain control signal.
8, television receiver according to claim 6, it is characterized in that: after described source decoder carries out decoding processing to the TS stream signal that receives, generate decoded audio signal and export, generate decoded vision signal exports television set to by video channel video processing circuits by power amplifier.
9, television receiver according to claim 8 is characterized in that: described video channel is Y, U, V component vide passage or YC light tone video channel.
10, television receiver according to claim 8 is characterized in that: described source decoder is connected with the DDRAM memory with FLASH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200169772U CN201163798Y (en) | 2008-01-25 | 2008-01-25 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200169772U CN201163798Y (en) | 2008-01-25 | 2008-01-25 | Television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163798Y true CN201163798Y (en) | 2008-12-10 |
Family
ID=40184724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200169772U Expired - Fee Related CN201163798Y (en) | 2008-01-25 | 2008-01-25 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201163798Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025938A (en) * | 2010-12-15 | 2011-04-20 | 新科电子集团有限公司 | Ground digital television receiver |
| CN102244753A (en) * | 2011-06-30 | 2011-11-16 | 广州视源电子科技有限公司 | Television-based hybrid television program operation realization method and television |
| CN105872726A (en) * | 2016-05-24 | 2016-08-17 | 华为技术有限公司 | Television program playing method, related equipment and system |
-
2008
- 2008-01-25 CN CNU2008200169772U patent/CN201163798Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025938A (en) * | 2010-12-15 | 2011-04-20 | 新科电子集团有限公司 | Ground digital television receiver |
| CN102244753A (en) * | 2011-06-30 | 2011-11-16 | 广州视源电子科技有限公司 | Television-based hybrid television program operation realization method and television |
| CN105872726A (en) * | 2016-05-24 | 2016-08-17 | 华为技术有限公司 | Television program playing method, related equipment and system |
| CN105872726B (en) * | 2016-05-24 | 2019-11-26 | 华为技术有限公司 | A kind of television program playing method, relevant device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20120125 |