CN108377413A - It is a kind of to support while the set-top-box system and method for three road performance recordings - Google Patents
It is a kind of to support while the set-top-box system and method for three road performance recordings Download PDFInfo
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- CN108377413A CN108377413A CN201810347441.7A CN201810347441A CN108377413A CN 108377413 A CN108377413 A CN 108377413A CN 201810347441 A CN201810347441 A CN 201810347441A CN 108377413 A CN108377413 A CN 108377413A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 241001269238 Data Species 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
It is supported while the set-top-box system and method for three road performance recordings the present invention provides a kind of；Including：First via tuner and demodulator combination, play for real time programme；No. second tuner and demodulator combination, in the case of no recording function, realizing picture-in-picture function.The present invention also relates to the set-top box method for supporting three road performance recordings simultaneously.The present invention can at most support three road performance recordings simultaneously and recorded content plays back all the way, or two-way performance recording and all the way program time shifting are supported simultaneously, and the program of current all recordings and time shift, it can at most be distributed on two different frequency points, not interfere with other functions that user uses set-top box.
Description
Technical field
The present invention relates to TV set-top box technical fields, and in particular to a kind of to support while the set-top box of three road performance recordings
System and method.
Background technology
As growing high definition television user is for the ease for use of high definition television and multimedia content and various
Property demand so that support PVR (Personal Video Recorder, digital video recorder) function high definition set top box exist
It is widely used in family.In conventional digital TV set-top box system, Tuner (tuner module) is responsible for digital television signal
Humorous, Demod (demodulation module) is responsible for demodulated signal, they and Demux (demultiplexing module) and Decoder (decoder module) are together
Cooperation, the reception processing and decoding for realizing digital television signal play.Meanwhile by the Demux all data got off or part
Data write recording caching, and then recording function can be realized at local file in preservation.
Existing DTV STB generally all supports the recording that common set-top box is possessed (individually to record live streaming letter
The function of number stream), playback (function is played out to the code stream recorded) and time shift (code stream is carried out at the same time record with
The function of broadcasting) function, but normally due to non-flexible allotment on software, when multichannel is recorded, is recorded simultaneously simultaneously
It is bigger to carry out limitation in time shift or playback and the support of scheduling recording function.
Existing DTV STB can support the function that real time programme is played while recording, can also be
It while recording, plays currently just in recorded program, but is usually constructed with various limitations, single frequency point can only be operated simultaneously
Program under (a Tuner+Demod module corresponds to a frequency point), or demultiplexing module makes for recording there are one possible
With (usually a Demux can be used for recording a program), across frequency point carry out more than two program can not be supported simultaneously
It records, playback broadcasting and time shifting broadcasting can not be also carried out in the case where having existed multiple programs while recording.
Invention content
The purpose of the present invention is being directed to deficiency in the prior art, a kind of support while the machine top of three road performance recordings is provided
Box system and method at most support three road performance recordings and recorded content play back all the way, or support two-way section simultaneously simultaneously
Catalogue system and all the way program time shifting, and the program of current all recordings and time shift, can at most be distributed in two differences
Frequency point on.
To achieve the above object, the invention discloses following technical solutions：
It is supported while the set-top-box system of three road performance recordings the present invention relates to a kind of, including：
First via tuner and demodulator combination, play for real time programme；
No. second tuner and demodulator combination, in the case of no recording function, realizing picture-in-picture function, and
When No. second tuner and demodulator combination are recorded occupancy, the frequency where the program of residing frequency point and desired picture-in-picture is selected
The consistent tuner of point and demodulator combination；It records program preferentially to combine using No. second tuner and demodulator, same frequency point
Under recording program must use and combined with tuner all the way and demodulator, when No. second tuner and demodulator are by other work(
In the case of capable of occupying, first via tuner and demodulator combination is selected to be recorded；When the real-time big picture program of progress or picture
In the case that the middle small picture program of picture cuts platform or pre-recording, if under the premise of above-mentioned reasonable distribution, involved frequency
Point combined with that corresponding road tuner and demodulator place frequency point it is inconsistent if, a personal-machine interactive interface is provided at this time
Function selection is carried out for user.
It supports while the set-top box method of three road performance recordings, includes the following steps invention additionally discloses a kind of：
Performance recording flow：A stream-recording is chosen whether first into clear stream, shows the code finally stored to local file
Stream is clear stream or scrambling stream；Next chooses whether that recording is encrypted；Then different recording modes, including all-key stream are chosen
It records and effective TS streams is recorded；After demultiplexing module mask data, caching is recorded in primary deposit, then write-in is outer in batches
Storage device is connect, to achieve the purpose that recording；Other program datas under current frequency point are also detached with same demultiplexing module
Out, same demultiplexing module is used to reach multiplexed program under same frequency point；
Pre-recording flow：Started according to initial time and recorded, by preengaging the text that duration limits or pre-recording gets off
Part size limits or exits stopping manually and records；Alternatively, carrying out recording of unrolling, recorded file reaches preset in recording process
Size, or record duration and reach preset length, recording does not continue to increase file size, by covering the number recorded before
According to reaching and ensure recorded file size or time-invariant purpose；During system is currently running, event is preengage,
Conflict if program to be recorded closes to generate with other functions in tuner and demodulator group, directly carries out backstage record
System, interface provide corresponding prompt, if there is conflict, then provide an interactive interface and are selected for user；When system processing
When standby mode, event is preengage, this set-top box can be waken up, and executed and specified recording function, if midway user is without any
Operation, then automatically into standby mode after recording terminates, if there are user's operations, set-top box to keep just in recording process
Often operation.
It is above-mentioned it is a kind of support while the set-top box method of three road performance recordings, in performance recording flow, if waiting recording
Program be scrambling stream, need to start CA all the way on recording Demux and could record into clear stream, in this way playback when then need not be into
Row descrambling operation needs to carry out related descrambling operation when playing back if local file still saves as scrambling stream.
It is above-mentioned it is a kind of support while the set-top box method of three road performance recordings, in performance recording flow, encrypting shooting makes
It uses the hardware ID of set-top box as the key of selected Encryption Algorithm, the file recorded is encrypted, play back
When, inversely processing is carried out, the hardware ID is first read, reuses corresponding decipherment algorithm and place is decrypted to the file recorded
Reason, so being limited in can only be played back on the set-top box herein, reaches encryption purpose.
It is disclosed by the invention a kind of to support while the set-top-box system and method for three road performance recordings to have below beneficial to effect
Fruit：
The present invention can at most support three road performance recordings simultaneously and recorded content plays back all the way, or supports two simultaneously
Road performance recording and all the way program time shifting, and the program of current all recordings and time shift, can at most be distributed in two
On different frequency points, other functions that user uses set-top box are not interfered with.
Description of the drawings
Fig. 1 is while recording, and same/across the frequency point big picture of real time programme cuts platform flow chart；
Fig. 2 is while recording, and same/across the frequency point small picture of picture-in-picture cuts platform flow chart；
Fig. 3 is multi-channel recording Booting sequence figure；
Fig. 4 is recording function basic flow chart.
Specific implementation mode
Embodiment
The present embodiment be related to it is a kind of support while the set-top-box system of three road performance recordings, understand this implementation for convenience
Example is shown in and pays flow chart shown in 1,2,3,4；Including：
First via tuner and demodulator combination, play for real time programme；
No. second tuner and demodulator combination, in the case of no recording function, realizing picture-in-picture function, and
When No. second tuner and demodulator combination are recorded occupancy, the frequency where the program of residing frequency point and desired picture-in-picture is selected
The consistent tuner of point and demodulator combination；It records program preferentially to combine using No. second tuner and demodulator, same frequency point
Under recording program must use and combined with tuner all the way and demodulator, when No. second tuner and demodulator are by other work(
In the case of capable of occupying, first via tuner and demodulator combination is selected to be recorded；When the real-time big picture program of progress or picture
In the case that the middle small picture program of picture cuts platform or pre-recording, if under the premise of above-mentioned reasonable distribution, involved frequency
Point combined with that corresponding road tuner and demodulator place frequency point it is inconsistent if, a personal-machine interactive interface is provided at this time
Function selection is carried out for user.
The present embodiment further relate to it is a kind of support while the set-top box method of three road performance recordings, include the following steps：
Performance recording flow：A stream-recording is chosen whether first into clear stream, shows the code finally stored to local file
Stream is clear stream or scrambling stream；Next chooses whether that recording is encrypted；Then different recording modes, including all-key stream are chosen
It records and effective TS streams is recorded；After demultiplexing module mask data, caching is recorded in primary deposit, then write-in is outer in batches
Storage device is connect, to achieve the purpose that recording；Other program datas under current frequency point are also detached with same demultiplexing module
Out, same demultiplexing module is used to reach multiplexed program under same frequency point；
Pre-recording flow：Started according to initial time and recorded, by preengaging the text that duration limits or pre-recording gets off
Part size limits or exits stopping manually and records；Alternatively, carrying out recording of unrolling, recorded file reaches preset in recording process
Size, or record duration and reach preset length, recording does not continue to increase file size, by covering the number recorded before
According to reaching and ensure recorded file size or time-invariant purpose；During system is currently running, event is preengage,
Conflict if program to be recorded closes to generate with other functions in tuner and demodulator group, directly carries out backstage record
System, interface provide corresponding prompt, if there is conflict, then provide an interactive interface and are selected for user；When system processing
When standby mode, event is preengage, this set-top box can be waken up, and executed and specified recording function, if midway user is without any
Operation, then automatically into standby mode after recording terminates, if there are user's operations, set-top box to keep just in recording process
Often operation.
It is above-mentioned it is a kind of support while the set-top box method of three road performance recordings, in performance recording flow, if waiting recording
Program be scrambling stream, need to start CA all the way on recording Demux and could record into clear stream, in this way playback when then need not be into
Row descrambling operation needs to carry out related descrambling operation when playing back if local file still saves as scrambling stream.
It is above-mentioned it is a kind of support while the set-top box method of three road performance recordings, in performance recording flow, encrypting shooting makes
It uses the hardware ID of set-top box as the key of selected Encryption Algorithm, the file recorded is encrypted, play back
When, inversely processing is carried out, the hardware ID is first read, reuses corresponding decipherment algorithm and place is decrypted to the file recorded
Reason, so being limited in can only be played back on the set-top box herein, reaches encryption purpose.
For the prior art, the invention has the advantages that：
The present invention can at most support three road performance recordings simultaneously and recorded content plays back all the way, or supports two simultaneously
Road performance recording and all the way program time shifting, and the program of current all recordings and time shift, can at most be distributed in two
On different frequency points, other functions that user uses set-top box are not interfered with.
The above is only a preferred embodiment of the present invention, rather than its limitations；Although should be pointed out that with reference to above-mentioned each
Embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it still can be to above-mentioned each
Technical solution recorded in embodiment is modified, or carries out equivalent replacement to which part or all technical features；And this
A little modifications and replacement, do not make the essence of corresponding technical solution depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
- It is supported while the set-top-box system of three road performance recordings 1. a kind of, which is characterized in that including：First via tuner and demodulator combination, play for real time programme；No. second tuner and demodulator combination realize picture-in-picture function in the case of no recording function, and when the When No. two tuners and demodulator combination are recorded occupancy, the frequency point one where the program of residing frequency point and desired picture-in-picture is selected The tuner and demodulator of cause combine；Recording program also preferentially uses No. second tuner and demodulator to combine, under same frequency point Recording program must use and combined with tuner all the way and demodulator, when No. second tuner and demodulator are by other functions In the case of occupancy, first via tuner and demodulator combination is selected to be recorded；In carrying out big picture program in real time or drawing It draws in the case that small picture program cuts platform or pre-recording, if under the premise of above-mentioned reasonable distribution, involved frequency point If frequency point where being combined with that corresponding road tuner and demodulator is inconsistent, personal-machine interactive interface confession is provided at this time User carries out function selection.
- It is supported while the set-top box method of three road performance recordings 2. a kind of, which is characterized in that include the following steps：Performance recording flow：A stream-recording is chosen whether first into clear stream, and showing finally to store to the code stream of local file is Clear stream still scrambles stream；Next chooses whether that recording is encrypted；Then different recording modes, including full stream-recording are chosen It flows and records with effective TS；After demultiplexing module mask data, caching is recorded in primary deposit, then external deposit is written in batches Equipment is stored up, to achieve the purpose that recording；Other program datas under current frequency point are also separated with same demultiplexing module, Same demultiplexing module is used to reach multiplexed program under same frequency point；Pre-recording flow：Started according to initial time and is recorded, it is big by preengaging the file that duration limits or pre-recording gets off Stopping recording being exited in small limitation manually；Alternatively, carrying out recording of unrolling, recorded file reaches preset big in recording process It is small, or record duration and reach preset length, recording does not continue to increase file size, by covering the number recorded before According to reaching and ensure recorded file size or time-invariant purpose；During system is currently running, event is preengage, Conflict if program to be recorded closes to generate with other functions in tuner and demodulator group, directly carries out backstage record System, interface provide corresponding prompt, if there is conflict, then provide an interactive interface and are selected for user；When system processing When standby mode, event is preengage, this set-top box can be waken up, and executed and specified recording function, if midway user is without any Operation, then automatically into standby mode after recording terminates, if there are user's operations, set-top box to keep just in recording process Often operation.
- It a kind of is supported while the set-top box method of three road performance recordings 3. according to claim 2, which is characterized in that program Record flow in, if wait for recorded program be scrambling stream, need record Demux on start CA all the way could record into it is clear Stream, in this way play back when need not then carry out descrambling operation, if local file still save as scrambling flow, needed when playing back into Row correlation descrambling operation.
- It a kind of is supported while the set-top box method of three road performance recordings 4. according to claim 2, which is characterized in that program Record flow in, encrypting shooting, using set-top box hardware ID as the key of selected Encryption Algorithm, to what is recorded File is encrypted, and when playback, carries out inversely processing, first reads the hardware ID, reuses corresponding decipherment algorithm to recording The file to get off is decrypted, so being limited in can only be played back on the set-top box herein, reaches encryption purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347441.7A CN108377413A (en) | 2018-04-18 | 2018-04-18 | It is a kind of to support while the set-top-box system and method for three road performance recordings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347441.7A CN108377413A (en) | 2018-04-18 | 2018-04-18 | It is a kind of to support while the set-top-box system and method for three road performance recordings |
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| CN108377413A true CN108377413A (en) | 2018-08-07 |
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| CN201810347441.7A Pending CN108377413A (en) | 2018-04-18 | 2018-04-18 | It is a kind of to support while the set-top-box system and method for three road performance recordings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447475A (en) * | 2020-03-27 | 2020-07-24 | 四川长虹电器股份有限公司 | Multi-channel PVR control system based on digital set-top box and recording and playback method |
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