CN104427366A - Embedded platform of digital processing TV (Television) - Google Patents
Embedded platform of digital processing TV (Television) Download PDFInfo
- Publication number
- CN104427366A CN104427366A CN201310399744.0A CN201310399744A CN104427366A CN 104427366 A CN104427366 A CN 104427366A CN 201310399744 A CN201310399744 A CN 201310399744A CN 104427366 A CN104427366 A CN 104427366A
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- China
- Prior art keywords
- module
- embedded platform
- digital
- television
- digital processing
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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
- H04N21/41—Structure of client; Structure of client peripherals
-
- 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
- H04N21/426—Internal components of the client ; Characteristics thereof
Abstract
The invention discloses an embedded platform of a digital processing TV (Television). The embedded platform comprises an audio signal processing module, a CPU (Central Processing Unit), an A/D (Analog to Digital) conversion module and a video display module, wherein the A/D conversion module and the video display module are connected with the CPU, the A/D conversion module is also connected with an input signal switching module, the CPU and the input signal switching module are both connected with the audio signal processing module, and the CPU is also connected with a storage device. According to the embedded platform of the digital processing TV, disclosed by the invention, high-efficiency digital domain processing on a traditional analog TV signal is realized, the image quality of TV pictures is obviously increased, and multiple functions which cannot be realized by a traditional analog TV are realized; the circuit is simple, distinctive nuance is realized, the modulation degree is high, and the function expansion can be conveniently realized.
Description
Technical field
The invention belongs to electronic applications, relate to a kind of digital processing television embedded platform.
Background technology
Digital processing television is under analog TV broadcasting transmission system, the simulation composite video signal received is carried out analog-to-digital conversion, then digital signal stored, process and transmit, last again through D/ A change-over circuit, be again converted to analog signal and the color TV set of display broadcast.The maximum difference of digital processing television and traditional analog television is: the simulation composite video signal first ability output display after the image, sound accompaniment full digital processing of inside television digit chip that it will receive.Therefore, its overall performance has had and has significantly improved compared with traditional simulated television.
Existing digital processing television platform forms based on original analog platform transformation, and performance is single, does not become system, and cause equipment complicated, poor compatibility, is unfavorable for Function Extension.
Summary of the invention
Single for solving existing digital processing television platform property, do not become system, cause equipment complicated, poor compatibility, is unfavorable for the technological deficiency of Function Extension, the invention provides a kind of digital processing television embedded platform.
Digital processing television embedded platform, comprise audio-frequency signal processing module, comprise central processing unit, and the A/D modular converter to be connected with central processing unit and video display module, described A/D modular converter is also connected with output signal handover module, described central processing unit is all connected with audio-frequency signal processing module with input signal handover module, and described central processing unit is also connected with storage device.
Preferably, described central processing unit is STV3500.
Preferably, described A/D modular converter is STV2310.
Preferably, described video display module is STV9211 and STV9118 be connected with central processing unit.
Preferably, described output signal handover module is CD4052.
Preferably, described audio-frequency signal processing module is digital power amplifier.
Preferably, described storage device comprises SDRAM, EEPROM and FLASH.
Digital processing television embedded platform of the present invention, achieves and processes the high-efficiency digital territory of conventional analog television signals, significantly improve the picture quality of television image, achieve the function that multiple traditional analog television cannot realize.Circuit of the present invention is simple, clear layer, and the degree of modularity is high, is convenient to practical function expansion.
Accompanying drawing explanation
Fig. 1 illustrates the present invention's embodiment schematic diagram.
Embodiment
Below provide the present invention's embodiment.
Digital processing television embedded platform, comprise audio-frequency signal processing module, comprise central processing unit, and the A/D modular converter to be connected with central processing unit and video display module, described A/D modular converter is also connected with output signal handover module, described central processing unit is all connected with audio-frequency signal processing module with input signal handover module, and described central processing unit is also connected with storage device.
Fig. 1 provides the present invention's embodiment, be digital processing television embedded platform of the present invention in dotted line frame, the preferred STV2310 of A/D modular converter, it is for the treatment of standard analog signal, and converts thereof into the high-quality video process front-end chip of digital signal output.The preferred STV3500 of central processing unit, it is a low cost, the high integration processor chips that are exclusively used in 100Hz TV solution, can give STV2310 to provide powerful support for.Its inside comprises row, field frequency multiplier, can the interface of each peripheral hardware and 32 ST20 series CPU core in controller, and the inside OSD maker of word and picture can be shown, the video flowing meeting ITU2RBT.601/656 standard that compound standard video decoding chip (STV2310) transmits can be received.Storage device comprises SDRAM, EEPROM and FLASH forms, and forms complete standard storage combination.
Video display module can be made up of jointly STV9211 and STV9118 two chip.STV9211 is used for the rgb signal that STV3500 exports being carried out pre-amplification process and providing the regulatory function to brightness, contrast, drive level and black level.STV9118 is for realizing all functions relevant to row field deflection.These functions are all realized by the value arranging related register.Input signal handover module is preferably made up of CD4052 chip, and it mainly completes the switching between various video input signals.
Whole system is roughly divided into three parts, i.e. bottom parts, digiboard part and display section.Wherein bottom parts is identical with traditional analog television with display section, and the digiboard part of system is not available for traditional analog television, is the part of most critical in whole system.
Through the tuning selection of tuner (tuner) to high-frequency signal, TV signal is admitted to television receiver.After mixing, the TV signal of intermediate frequency is admitted to intermediate frequency process chip and processes, and the composite video signal therefrom extracted and audio signal are sent in respective decoding chip respectively to be processed.Composite video signal is sent in the STV2310 on digiboard.A/D modular converter STV2310 receives the various anolog TV signals from television baseboard, after being converted into digital signal, send into the YC separation module of STV2310, digital comb filter performance due to STV2310 employing is much better than the simulation YC separation module of traditional analog television, crosstalk between bright and colour signal can obtain and reduce to greatest extent, and the quality of image is greatly improved.Afterwards, reconfigure after brightness, carrier chrominance signal are processed separately and by 4: 2: 2YCrCb formatted output.Its output will be admitted to central processor core STV3500.
In STV3500, first the video data stream of input is converted into the display format of needs.Up-conversion technology is the large-area flicker that the mode taking field frequency to double (50Hz is increased to 100Hz) is improved traditional analog television and caused because field frequency is lower, makes image more stable, smooth.This chip according to the pattern of up conversion, can produce correct video display sequence.After the process through image enhancement technique each in chip, TV menu, cursor and background will be added on television image, and finally, this superposed signal will be sent to the video display module after being connected to STV3500.After the display effect of image being carried out to the process of some necessity in video display module, image will send into the display section display of DPTV system in an rgb format
Above-describedly be only the preferred embodiments of the present invention; described embodiment is also not used to limit scope of patent protection of the present invention; therefore the equivalent structure that every utilization specification of the present invention and accompanying drawing content are done changes, and in like manner all should be included in protection scope of the present invention.
Claims (7)
1. digital processing television embedded platform, comprise audio-frequency signal processing module, it is characterized in that, comprise central processing unit, and the A/D modular converter to be connected with central processing unit and video display module, described A/D modular converter is also connected with output signal handover module, and described central processing unit is all connected with audio-frequency signal processing module with input signal handover module, and described central processing unit is also connected with storage device.
2. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described central processing unit is STV3500.
3. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described A/D modular converter is STV2310.
4. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described video display module is STV9211 and STV9118 be connected with central processing unit.
5. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described output signal handover module is CD4052.
6. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described audio-frequency signal processing module is digital power amplifier.
7. a digital processing television embedded platform as claimed in claim 1, it is characterized in that, described storage device comprises SDRAM, EEPROM and FLASH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399744.0A CN104427366A (en) | 2013-09-06 | 2013-09-06 | Embedded platform of digital processing TV (Television) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399744.0A CN104427366A (en) | 2013-09-06 | 2013-09-06 | Embedded platform of digital processing TV (Television) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104427366A true CN104427366A (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310399744.0A Pending CN104427366A (en) | 2013-09-06 | 2013-09-06 | Embedded platform of digital processing TV (Television) |
Country Status (1)
| Country | Link |
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| CN (1) | CN104427366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933972A (en) * | 2017-05-24 | 2018-12-04 | 泰勒斯公司 | Digital processing unit with high connectivity and input/output handling capacity |
-
2013
- 2013-09-06 CN CN201310399744.0A patent/CN104427366A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933972A (en) * | 2017-05-24 | 2018-12-04 | 泰勒斯公司 | Digital processing unit with high connectivity and input/output handling capacity |
| CN108933972B (en) * | 2017-05-24 | 2021-12-10 | 泰勒斯公司 | Digital processing apparatus with high connectivity and input/output throughput |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |