CN101621638B - Digital television with two-channel PVR function - Google Patents
Digital television with two-channel PVR function Download PDFInfo
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- CN101621638B CN101621638B CN2009100413658A CN200910041365A CN101621638B CN 101621638 B CN101621638 B CN 101621638B CN 2009100413658 A CN2009100413658 A CN 2009100413658A CN 200910041365 A CN200910041365 A CN 200910041365A CN 101621638 B CN101621638 B CN 101621638B
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Abstract
The invention discloses a digital television with a two-channel PVR function, comprising a digital television main control board, a television display screen and a PVR expansion control board, wherein, the digital television main control board is provided with a high-frequency head, a tuner, a decoder and a main control chip, the PVR expansion control board is matched and connected with the digital television main control board and comprises a high-frequency head, a control chip, a second USB interface, a data control line interface and an audio frequency and visual frequency signal line interface, and the data control line interface and the audio frequency and visual frequency signal line interface are connected with the digital television main control board; the PVR expansion control board is used for sharing the same operation control interface with the digital television main control board, channel data exchange and video recording and play command control are carried out by an I2C/UART communication protocol, and a condition that one channel of the digital television plays the programs of one channel and the other channel records the programs of the same channel or different channels simultaneously is realized.
Description
Technical field
The present invention relates to field of television, relate in particular to a kind of one side simultaneously broadcast program, Yi Bian record the digital television of the binary channels PVR function of identical or different channel program.
Background technology
Has PVR (Personal Video Recording) function at present, it is the digital television complex structure of recording function, generally all adopt the TV-set top box that is independent of television set to come program recording, and in the digital television chip of digital television, because the height of function is integrated, be subjected to chip area and number of pins quantitative limitation, can only provide a digital channel in Digital Television input and decoded portion, that is to say when the user when watching the digital program of a channel, record a video with digital program only to this channel, but can not control simultaneously the program of another one channel is recorded a video, this has limited the function of digital television greatly.
Because the technical deficiency of chip communication agreement and interface function, existing digital television can't be realized binary channels PVR function, can't be set, automatically recording video program using the channel and the beginning/concluding time of program recording in advance according to electronic program list.Can realize in low cost S OC Digital Television scheme that the product of binary channels PVR function does not also have at present.
Summary of the invention
The object of the invention provides a kind of digital television with binary channels PVR function, not only can play TV programme, also can utilize the external USB memory device to record the TV programme of identical or different channel simultaneously, realizes twin-channel PVR function.
The embodiment of the invention provides a kind of digital television with binary channels PVR function, comprise the Digital Television master control borad that is provided with tuner, tuner, decoder, main control chip, tv display screen, also comprise the PVR expansion control board that is complementary and is connected with described Digital Television master control borad, described PVR expansion control board comprises: tuner, control chip, memory device and the Data Control line interface and the audio-video signal line interface that are connected with described Digital Television master control borad;
Described PVR expansion control board, be used for sharing same operation control interface with described Digital Television master control borad, carry out channel data exchange and video recording, play command control by identical I2C/UART communication protocol, realize the program of a channel of a passage broadcast of described digital television, another passage is recorded the program of identical or different channel simultaneously.
Further, described Digital Television master control borad is provided with first USB interface, is used to connect first memory device, the channel program content that storage receives; Described PVR expansion control board is provided with second USB interface, is used to connect described memory device, the different channel programme content that storage simultaneously receives.
Further, described Digital Television master control borad and described PVR expansion control board can support to receive analog-and digital-television broadcasting signal, support to receive charge programme signal (CA), also support coupling to connect general-purpose interface (CI); The coherent signal process software programs that carries by cooperation, can support to receive and handle EPG, Teletext, Subtitle, MHEG-5, ATS, DVB-T digital television service signal, and the tuning processing of carrying out PAL/SECAM colour decoding and relevant sound accompaniment standard.
Further, be connected with the audio-video signal line by I2C/UART Data Control bus, YPBPR video signal cable between described Digital Television master control borad and the described PVR expansion control board.
Further, also comprise the displaying predetermined programme record device that is connected with described Digital Television master control borad or described PVR expansion control board, be used for being provided with according to electronic program list in advance the channel and the beginning/concluding time of program recording, automatically recording video program using.
Further, described Digital Television master control borad also comprises the system data administrative unit, infrared remote control/button receiving element and MPEG-2 stream decoder; Described PVR expansion control board also comprises decoder and the YPBPR signal coder of MPEG-2.
Further again, described Digital Television master control borad adopts I2C/UART communication protocol, is operated under the holotype, receives infrared or wireless remote control signal, realize function, automatic scan function, the EPG-related functions of OSD, and control described PVR expansion control board be correlated with video recording, play operation;
Described PVR expansion control board adopts I2C/UART communication protocol, is operated under pattern, receives the control signal of described Digital Television master control borad, perhaps according to the program recording channel and the beginning/concluding time that are provided with in advance, automatically recording video program using.
Further, when described digital television is recorded TS, one group of audio frequency, video information of current playing program among the TS is converted to the MPG file of PS packet format, and be kept in the systemic presupposition catalogue in the described storage facilities, described MPG file is numbered the classification storage according to file size and time.
The digital television that adopts the embodiment of the invention to provide with binary channels PVR function, can support simultaneously analog-and digital-TV programme broadcast, record, support to receive charge programme signal (CA), also support coupling to connect general-purpose interface (CI); The coherent signal process software programs that carries by cooperation, also can support to receive and handle EPG, Teletext, Subtitle, MHEG-5, ATS, DVB-T digital television service signal, and the tuning processing of carrying out PAL/SECAM colour decoding and relevant sound accompaniment standard.
Can realize watching TV programme, and imprinting simultaneously, standby reservation imprinting, EPG reservation imprinting, record while seeing, functions such as time shift is watched, the identical or different channel TV program of back platform independent imprinting, the reservation imprinting also can be set the program of liking in advance, PVR can get off these section directories automatically, waits and watches free the time again.The TV guide that shows a following week according to the program guide of electric program guide EPG, realized that digital television program is selected and pre-recording more simply and easily, by time shift and recording function, client can suspend programme televised live or record following program so that watch future, thereby realizes rating control better.Client can record a video to the another one TV programme on the backstage when watching a TV programme.
Description of drawings
Fig. 1 is the digital television structure block diagram with binary channels PVR function that the embodiment of the invention one provides;
Fig. 2 is the digital television structure block diagram with binary channels PVR function that the embodiment of the invention two provides.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the embodiment of the invention one provides a kind of digital television with binary channels PVR function, comprise the Digital Television master control borad 1 that is provided with tuner, tuner, decoder, main control chip, tv display screen 2, described main control chip connects tuner, tuner, decoder by the Data Control bus.Described television system also comprises the PVR expansion control board 3 that is complementary and is connected with described Digital Television master control borad, and described PVR expansion control board comprises: tuner, control chip, USB interface and the Data Control line interface and the audio-video signal line interface that are connected with described Digital Television master control borad.Concrete, be connected with audio signal wire by I2C/UART control bus, YPBPR video signal cable between described Digital Television master control borad and the described PVR expansion control board.
Described PVR expansion control board, be used for sharing same operation control interface with described Digital Television master control borad, carry out channel data exchange and video recording, play command control by I2C/UART communication protocol, realize the program of a channel of a passage broadcast of described digital television, another passage is recorded the program of identical or different channel simultaneously.Described PVR expansion control board can be arranged on separately in the set-top box, also can be arranged in the television set.
Also be provided with USB interface on the described Digital Television master control borad, be used to be connected with memory device, the channel program content that storage receives; USB interface on the described PVR expansion control board is connected with memory device, is used for storing simultaneously another channel program content that receives.The described like this digital television with binary channels PVR function can be expanded the program storage of this channel in the memory device of control board connection to Digital Television master control borad or PVR by USB interface when playing a television channel program simultaneously; Perhaps receive the TV programme of other channels by the tuner on the PVR expansion control board simultaneously, and carry out recording and storing.
As shown in Figure 2, the embodiment of the invention two provides a kind of digital television with binary channels PVR function, be with embodiment one difference, described digital television also comprises the displaying predetermined programme record device that is connected with described Digital Television master control borad, be used for being provided with according to electronic program list in advance the channel and the beginning/concluding time of program recording, automatically recording video program using.Need to prove that described displaying predetermined programme record device also can be connected with described PVR expansion control board.
As further improvement project, described Digital Television master control borad also comprises the system data administrative unit, infrared remote control/button receiving element and MPEG-2 stream decoder; Described PVR expansion control board also comprises decoder and the YPBPR signal coder of MPEG-2.
Described Digital Television master control borad and described PVR expansion control board can support to receive analog-and digital-television broadcasting signal, support to receive charge programme signal (CA), also support coupling to connect general-purpose interface (CI); The coherent signal process software programs that carries by cooperation, can support to receive and handle EPG, Teletext, Subtitle, MHEG-5, ATS, DVB-T digital television service signal, and the tuning processing of carrying out PAL/SECAM colour decoding and relevant sound accompaniment standard.
Described digital television adopts the hardware connection mode of the two frameworks of master, and the communication interface and the I2C/UART agreement of utilization coupling communicate.When described Digital Television master control borad is operated under the holotype, receive infrared or wireless remote control signal, realize basic function, automatic scan function, the EPG-related functions of existing television set OSD, and control described PVR expansion control board be correlated with video recording, play operation; When described PVR expansion control board is operated under pattern, receive the control signal of described Digital Television master control borad, perhaps according to the program recording channel and the beginning/concluding time that are provided with in advance, automatically recording video program using.
Described Digital Television master control borad and described PVR expansion control board adopt the same DTV of manufacturer chip and DVB-T set-top-box chip respectively.Adopt the hardware connection mode of the two frameworks of master, use a Digital Television single-chip as main control chip, with a television decoding chip as extended device, and share same operation and control the interface, carry out channel data exchange and order control by I2C/UART communication protocol, seamlessly constitute a binary channels PVR digital television.
The embodiments of the invention product is done new synchronization mechanism definition by research chip bsp driver from the operating system of bottom, accomplishes the shared same driver of twin-core sheet, has defined the communication interface between software and hardware agreement that can adapt to big data quantity simultaneously.The digital television with binary channels PVR based on the twin-core sheet is integrated by unified bsp driver, cooperates stable communications protocol to realize powerful twin-channel PVR function.
This product meets the standard of European digital simulation TV, possesses Nicam, Teletext, and ATS, the DVB-T Digital Television, PAL/SECAM colour decoding and relevant sound accompaniment standard possess MHEG-5 Digital Television middleware function.And possessed two-way USB port and multimedia decoding ability, after connecting outside USB memory device, can carry out music, picture, video playback.Under digital television channel, possess recording function, both can record a video to current program, also can carry out Time Shift operation to current program, by electronic program guides (EPG), can carry out subscription and video recording, in the specific time specific program is recorded a video.Support the backstage video recording simultaneously, promptly can when watching a digital television program, the another one digital television program be recorded a video binary channels PVR most important function that Here it is on the backstage.Digital television program under the record can carry out playback at any time.When described digital television is recorded TS, one group of audio frequency, video information of current playing program among the TS is converted to the MPG file of PS packet format, and be kept in the systemic presupposition catalogue in the described storage facilities, described MPG file is numbered the classification storage according to file size and time.
Function and technical indicator that described digital television with binary channels PVR function has are as follows.
One, PVR part technical parameter index
A, imprinting function:
Record TS, convert a group of audio frequency, video information of current playing program among the TS MPG file of PS packet format to, and be kept in the storage facilities in the systemic presupposition catalogue, described MPG file is numbered classification according to size and time and stores;
Singly-bound is recorded current program, and can stop to record by singly-bound;
The maximum 3.9G byte of the single file of imprinting surpasses divided file is deposited;
Support recording of TV and RADIO program;
The reservation imprinting:
Via EPG or UI pre-recording specific program;
Support eight reservation imprintings at most;
Support periodic reservation and disposable reservation;
When the reservation conflict, can eject warning message;
The imprinting of Polymera background:
Can record while playing, see a channel, the program of the another one of imprinting simultaneously channel
B, storage device management:
Can delete single file and file;
Can rename operation to recorded file;
The imprinting file playback
But playback video in USB film/music/audio recording file
C, imprinting specification:
Input: MPEG2TS stream, ISO/IEC 13818-2.
Output: MPEG2PS bag, only contain single Video and Audio PID content, do not comprise TS contents such as Teletext, Subtitle, EPG, the output file video is " .MPG " file, audio frequency is " .MP3 " file, and can play on other can play the player of MPEG2PS.
D, file designation rule: channel designation (Program name) adds TRDA (date) and time (Hour Minute Second), as: BBC ONE (2008-07-23_12-34-56) .MPG, when recording for a long time when file size surpasses 3.9GB cutting file and is compiled the classification preservation automatically, as BBCONE (2008-07-23_12-34-56) 001.MPG.
Two, memory device and file system
System supports USB Mass Storage memory device to connect.
USB host support 2.0 and compatibility 1.1 are not supported card reader and USB Hub.
The file system of external device is supported FAT32/FAT.
System can support the connection of maximum four disk partition simultaneously.
But listed files display file quantity is 9999 to the maximum, and 9999 files are recorded in the maximum support of promptly same subregion.
The single file size of FAT/FAT32 file system be restricted to 4GB.
The maximum disk partition capacity of FAT file system is 4GB, and the FAT32 file system is then supported maximum disk partition capacity 2TB.
Three, function and the specification partly supported of TV:
Simulated television S-SYSTEM: PAL, SECAM
Simulated television sound accompaniment standard: B/G, D/K, I, L/L ' modulation; NICAM, the A2 stereophonic sound system
Digital Television standard: DVB-T COFDM 2K/8K QPSK, 16QAM, 64QAM
Decoding digital video ability: MPEG-1/2MP@HL, VC1 L3
Digital audio decoding ability: MPEG-1/2, Layer 1,2, MP3, WMA
Digital information function: Teletext (1000 pages), subtitle, EPG (electric program guide in a week)
Input port: YPrPb, PC RGB, CVBS, HDMI, SCART
Pattern of the input is supported: the highest 1366x76860Hz of PC RGB-
YPrPb/HDMI-480I，480P，576I，576P，720P，1080I，1080P
Supporting language: English, French, Spanish, Italian, Portuguese and German (optional)
Display resolution is supported: 1920x1080P 60Hz
The digital television that adopts the embodiment of the invention to provide with binary channels PVR function, can support analog-and digital-television broadcasting to receive simultaneously, support the conditionity of charge rating to receive (CA), also support general-purpose interface (CI), support EPG, Teletext, digital service functions such as Subtitle, MHEG-5.
Support twin-channel PVR function, can realize instant imprinting, standby reservation imprinting, EPG reservation imprinting, record while seeing, functions such as time shift is watched, back platform independent TV programme imprinting, the reservation imprinting also can be set the program of liking in advance, PVR can get off these section directories automatically, waits and watches free the time again.The EPG program guide shows the TV guide in a following week, realized that digital television program is selected and recorded more simply and easily, by time shift and recording function, client can suspend programme televised live or record following program so that watch future, thereby realizes rating control better.Digital television of the present invention can be realized the equal television reception of present similar products at home and abroad, imprinting, storage, playback function, and product will have higher cost performance, and the hardware platform of selecting for use simultaneously has the typical products in mass production basis.
The above is a preferred implementation of the present invention; certainly can not limit the present invention's interest field with this; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement and change, these improvement and change also are considered as protection scope of the present invention.
Claims (8)
1. digital television with binary channels PVR function, comprise the Digital Television master control borad that is provided with tuner, tuner, decoder, main control chip, tv display screen, it is characterized in that, also comprise the PVR expansion control board that is complementary and is connected with described Digital Television master control borad, described PVR expansion control board comprises: tuner, control chip, memory device and the Data Control line interface and the audio-video signal line interface that are connected with described Digital Television master control borad;
Described PVR expansion control board, be used for sharing same operation control interface with described Digital Television master control borad, carry out channel data exchange and video recording, play command control by identical communication protocol, realize the program of a channel of a passage broadcast of described digital television, another passage is recorded the program of identical or different channel simultaneously.
2. digital television according to claim 1 is characterized in that, described Digital Television master control borad is provided with first USB interface, is used to connect first memory device, the channel program content that storage receives; Described PVR expansion control board is provided with second USB interface, is used to connect described memory device, the different channel programme content that storage simultaneously receives.
3. digital television according to claim 1, it is characterized in that, described Digital Television master control borad and described PVR expansion control board can receive analog-and digital-television broadcasting signal, support to receive charge programme signal (CA), also support coupling to connect general-purpose interface (CI); The coherent signal process software programs that carries by cooperation, can support to receive and handle EPG, Teletext, Subtitle, MHEG-5, ATS, DVB-T digital television service signal, and the tuning processing of carrying out PAL/SECAM colour decoding and relevant sound accompaniment standard.
4. digital television according to claim 1 and 2 is characterized in that, is connected with audio signal wire by I2C/UART Data Control bus, YPBPR video signal cable between described Digital Television master control borad and the described PVR expansion control board.
5. digital television according to claim 1 and 2, it is characterized in that, also comprise the displaying predetermined programme record device that is connected with described Digital Television master control borad or described PVR expansion control board, be used for being provided with according to electronic program list in advance the channel and the beginning/concluding time of program recording, automatically recording video program using.
6. digital television according to claim 1 and 2 is characterized in that, described Digital Television master control borad also comprises the system data administrative unit, infrared remote control/button receiving element and MPEG-2 stream decoder; Described PVR expansion control board also comprises decoder and the YPBPR signal coder of MPEG-2.
7. according to each described digital television of claim 1 to 3, it is characterized in that, described Digital Television master control borad adopts I2C/UART communication protocol, be operated under the holotype, receive infrared or wireless remote control signal, realize function, automatic scan function, the EPG-related functions of OSD, and control described PVR expansion control board be correlated with video recording, play operation;
Described PVR expansion control board adopts I2C/UART communication protocol, is operated under pattern, receives the control signal of described Digital Television master control borad, perhaps according to the program recording channel and the beginning/concluding time that are provided with in advance, automatically recording video program using.
8. digital television according to claim 2, it is characterized in that, when described digital television is recorded TS, convert a group of audio frequency, video information of current playing program among the TS MPG file of PS packet format to, described MPG file is numbered the classification storage according to file size and time.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106028099A (en) * | 2016-05-20 | 2016-10-12 | 青岛海信电器股份有限公司 | Program recording method and device of television terminal, television terminal, and system |
| CN107995514B (en) * | 2017-12-28 | 2021-06-25 | 北京四达时代软件技术股份有限公司 | Transmission method and device for digital television integrated machine control command |
| CN109194997A (en) * | 2018-09-06 | 2019-01-11 | 深圳康荣电子有限公司 | A kind of device and method of compatible Digital Radio television system |
| CN113225510B (en) * | 2021-04-30 | 2023-04-18 | 深圳创维－Rgb电子有限公司 | Television program recording method, device, equipment and storage medium |
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