CN101146188A - A multi-channel digital TV conditional receiving device - Google Patents
A multi-channel digital TV conditional receiving device Download PDFInfo
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- CN101146188A CN101146188A CNA2007101817522A CN200710181752A CN101146188A CN 101146188 A CN101146188 A CN 101146188A CN A2007101817522 A CNA2007101817522 A CN A2007101817522A CN 200710181752 A CN200710181752 A CN 200710181752A CN 101146188 A CN101146188 A CN 101146188A
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Abstract
A multi-channel digital TV conditional access device is provided, which comprises a digital decoding master chip (1), an infrared reception module (2), a FLASH (3), a memory SRAM (4), a reset circuit (5), a power processing module (6), a 27M crystal oscillator (7), an audio processing module (8), a video processing module (9), a USB interface module (10), a 12M crystal oscillator (11), and a serial port upgrade module (12). The device incorporates USB interface technique, audio-video decoding technique, serial port upgrade technique, and MPEG decoding technique; and is placed inside a television and connected with an external channel receiver card of the television via a USB interface, so as to receive wired, ground and satellite multi-channel signals and thus to decode the digital TV signal. The device, as the multi-channel digital TV conditional access device, can break the bottleneck of customized module in the industrialization of digital TVs and impart the versatility to the digital TVs.
Description
Technical field
The invention belongs to the EDP technology field, particularly TV domain digital signal receiving unit.
Background technology
Along with the fusion of global IT application, digitlization, networking, information technology, and the development of Digital Television industry, digital television will become a multi-functional multimedia terminal product.The reception of digital television signal at present, demonstration are divided into two independent sectors, at first by the digital TV set-top box receiving digital television signal, and convert the manageable signal format of television set to and pass to television set, by television set shows signal content, the major function of television set has just become display, and set-top box can not be produced the product into unified specification because function needs customization, causes China's Digital Television to be made slow progress.
At present, the Digital Television market development of China has begun comprehensive startup, General Bureau of Radio, Film and Television formulated 3 years and medium-term and long-term development plan, but the condition that the various places radio and TV operator adopted receives (CA), electric program guide (EPG), downloader (Loader) and middleware systems such as (Middle Ware) to have nothing in common with each other, digital TV set-top box is necessary for various places and customizes on a small scale, be difficult to large-scale production, research and development, production and maintenance cost height, poor reliability has seriously restricted the development in Digital Television market and the realization of General Bureau of Radio, Film and Television's target.Digital Television complete machine enterprise more faces the awkward situation that digital TV integrated machine can't come into the market.Be the restriction problem of terms of settlement receiving system to digital television receiver market, market presses for a kind of digital TV conditional receiving device that is separated with digital television receiver.
Summary of the invention
The object of the invention provides a kind of multi-channel digital TV conditional receiving device, this device places TV inside, be connected with the TV main control unit, be connected with TV foreign channels receiving card by USB interface, can receive wired, ground and the multi channel signal of satellite, break the bottleneck that the Digital Television industrialization can not module customizes, make Digital Television have versatility.
The present invention includes digital decoding master chip, infrared receiving module, FLASH, memory SRAM, reset circuit, power supply processing module, 27M crystal oscillator, audio processing modules, video processing module, usb interface module, 12M crystal oscillator, serial ports upgrading module; Wherein the port of infrared receiving module correspondence connects the P[57 of digital decoding master chip] port, the corresponding P[12..25 that connects the digital decoding master chip of the port of FLASH] port, the corresponding P[98..100 that connects the digital decoding master chip of the port of memory SRAM], P[105..113], P[116..120] port, the corresponding P[7 that connects the digital decoding master chip of the port of reset circuit], P[9] port, the corresponding P[85 that connects the digital decoding master chip of the port of 27M crystal oscillator] port, the corresponding digital decoding master chip P[141..143 that connects of the port of audio processing modules] port, the corresponding P[145 that connects the digital decoding master chip of the port of video processing module], P[148], P[151] port, the corresponding P[129..136 that connects the digital decoding master chip of the port of usb interface module] port, the corresponding P[64..67 that connects the digital decoding master chip of port of serial ports upgrading module] port, power supply processing module provides suitable operating voltage for each module, and FLASH also is solidified with software Firmware in (3).
In real work, the present invention at first is connected with TV foreign channels receiving card by USB interface, receive the digital television signal (as wired, satellite or terrestrial channel) of different channels, then by the digital decoding master chip, audio-video code stream to the no scramble information that meets national standard is decoded, the aberration YPbPr of outputting standard, compound video signal finally show by display screen.
The present invention is a kind of multi-channel digital TV conditional receiving device that integrates USB interface technology, audio/video decoding technology, serial ports upgrade technique, mpeg decode technology; This device places the inner multi-channel digital TV signal (wired, ground and satellite) that receives of digital television, realizes that transport stream transmits based on the high speed of USB2.0 interface and the decoding of high definition information source; This device can be finished the analysis of Digital Television and Conditional Access Module; Support the tuner UTI card of application platform such as CA, can support to comprise the separation between machine and card of wired, ground, satellite and IP channel; Realize the bidirectional high speed transmission of digital TV TS stream on USB interface; Can expand transmission based on the digital high-definition code stream of UWB wireless transmission; Break the bottleneck that the Digital Television industrialization can not module customizes, make Digital Television have versatility.
Description of drawings
Accompanying drawing 1 is the functional block diagram of the embodiment of the invention
Accompanying drawing 2 is the logic theory block diagram of the embodiment of the invention
Accompanying drawing 3 is the master control schematic diagram of the embodiment of the invention
Accompanying drawing 4 is the memory management module schematic diagram of the embodiment of the invention
Accompanying drawing 5 is the audio processing modules schematic diagram of the embodiment of the invention
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are specifically described:
With reference to the accompanying drawings 1,2, the embodiment of the invention comprises digital decoding master chip (1), infrared receiving module (2), FLASH (3), memory SRAM (4), reset circuit (5), power supply processing module (6), 27M crystal oscillator (7), audio processing modules (8), video processing module (9), usb interface module (10), 12M crystal oscillator (11), serial ports upgrading module (12); Wherein the port of infrared receiving module (2) correspondence connects the P[57 of digital decoding master chip (1)] port, the corresponding P[12..25 that connects digital decoding master chip (1) of the port of FLASH (3)] port, the corresponding P[98..100 that connects digital decoding master chip (1) of the port of memory SRAM (4)], P[105..113], P[116..120] port, the corresponding P[7 that connects digital decoding master chip (1) of the port of reset circuit (5)], P[9] port, the corresponding P[85 that connects digital decoding master chip (1) of the port of 27M crystal oscillator (7)] port, corresponding digital decoding master chip (1) P[141..143 that connects of the port of audio processing modules (8)] port, the corresponding P[145 that connects digital decoding master chip (1) of the port of video processing module (9)], P[148], P[151] port, the corresponding P[129..136 that connects digital decoding master chip (1) of the port of usb interface module (10)] port, the corresponding P[64..67 that connects digital decoding master chip (1) of the port of serial ports upgrading module (12)] port, FLASH also is solidified with software Firmware in (3).
With reference to the accompanying drawings 3～5, in embodiments of the present invention, infrared receiving module (2) receives remote controller information by infrared receiving terminal, transmits signal by infrared serial ports and gives digital decoding master chip (1); FLASH (3) storage system program and loading procedure are used for system start-up and system executes the task; The decoded ephemeral data information of memory SRAM (4) storage digital decoding master chip (1); Reset circuit (5) provides power-off reset for system; Power supply processing module (6) provides the power supply support for whole system, provides the power supply of 3.3 volts and 1.8 volts by power supply processing module (6) for digital decoding master chip (1), for usb interface module (10) provides 5 volts of power supplys; 27M crystal oscillator (7) provides oscillator signal for digital decoding master chip (1), and digital decoding master chip (1) is realized the oscillator signal of 108M by frequency multiplication; 12M crystal oscillator (11) provides oscillator signal for usb interface module (10); Serial ports upgrading module (12) is by the scalable system program of USB interface.
The components and parts model that the embodiment of the invention adopted is as shown in the table:
| The components and parts title | Model | Encapsulation |
| The digital decoding chip | ?HI2011 | ?QFP160 |
| The FLASH memory | ?M29LV160BTTC-10 | ?TSOP-48 |
| The separation between machine and card module | ?R8A0106FP | ?R8A0106FP |
| Serial port module | ?MAX232 | ?SOT23-5 |
| Audio frequency amplifier | ?CS4334 | ?SO-8 |
| Power management chip | ?LM833 | ?SO-8 |
| Power management chip | ?LM1117-1.8 | ?TO-252 |
| Storage chip | ?IS63LV1024-12 | ?TSOP-32 |
Function that the embodiment of the invention has reached and target:
1, based on USB2.0 stream data packet interface access technology, highest communication speed can reach 480Mbps;
2, the harmless conversion of data packet format;
3, the compatible access technology of multichannel self adaptation supports to comprise wired, ground, satellite channel;
4, support Conditional Access Module to separate;
5, realized the bidirectional high speed transmission of digital TV TS stream on USB interface;
6, the decoding of SD digital television signal, and can expand the high-definition signal decoding;
7, have standard high definition, standard signal output port, can built-in television set in, receiving digital signals;
8, have remote upgrade and local system upgrade function;
9, can expand reception UWB wireless signal receives;
10, can expand the separation that realizes customized application such as data broadcasting.
Concrete technical indicator:
| The radio frequency incoming frequency | ?110- | ||
| Input resistance | |||
| 75 ohm | |||
| Minimum incoming level | ?≤47dBuV(64QAM) | ||
| Maximum input level | ?≥80dBuV | ||
| The physical channel bandwidth | ?8MHz | ||
| The C/N thresholding | ?≤28dB(64QAM，6.952Mbaud) | ||
| The MER thresholding | ?≤26dB | ||
| The frequency acquisition scope | ?±150kHz | ||
| The input reflection loss | 〉=8dB (testing) at the current tuning in to channels of radio-frequency tuner | ||
| Demodulation | Self adaptation | 16,32,64QAM (basic demand), 128,256QAM | |
| Symbol rate | ?3.6-6.952Mbaud(64QAM) |
Claims (2)
1. a multi-channel digital TV conditional receiving device is characterized in that: comprise digital decoding master chip (1), infrared receiving module (2), FLASH (3), memory SRAM (4), reset circuit (5), power supply processing module (6), 27M crystal oscillator (7), audio processing modules (8), video processing module (9), usb interface module (10), 12M crystal oscillator (11), serial ports upgrading module (12); Wherein the port of infrared receiving module (2) correspondence connects the P[57 of digital decoding master chip (1)] port, the corresponding P[12..25 that connects digital decoding master chip (1) of the port of FLASH (3)] port, the corresponding P[98..100 that connects digital decoding master chip (1) of the port of memory SRAM (4)], P[105..113], P[116..120] port, the corresponding P[7 that connects digital decoding master chip (1) of the port of reset circuit (5)], P[9] port, the corresponding P[85 that connects digital decoding master chip (1) of the port of 27M crystal oscillator (7)] port, corresponding digital decoding master chip (1) P[141..143 that connects of the port of audio processing modules (8)] port, the corresponding P[145 that connects digital decoding master chip (1) of the port of video processing module (9)], P[148], P[151] port, the corresponding P[129..136 that connects digital decoding master chip (1) of the port of usb interface module (10)] port, the corresponding P[64..67 that connects digital decoding master chip (1) of the port of serial ports upgrading module (12)] port.
2. a kind of multi-channel digital TV conditional receiving device according to claim 1 is characterized in that: described FLASH also is solidified with software Firmware in (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101817522A CN101146188A (en) | 2007-10-26 | 2007-10-26 | A multi-channel digital TV conditional receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101817522A CN101146188A (en) | 2007-10-26 | 2007-10-26 | A multi-channel digital TV conditional receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101146188A true CN101146188A (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101817522A Pending CN101146188A (en) | 2007-10-26 | 2007-10-26 | A multi-channel digital TV conditional receiving device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316289A (en) * | 2010-07-09 | 2012-01-11 | 深圳Tcl新技术有限公司 | Menu processing method for dual-chip television scheme |
| US20170343241A1 (en) * | 2014-12-12 | 2017-11-30 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Method and system for controlling heat pump water heater |
| CN112637650A (en) * | 2021-01-04 | 2021-04-09 | 国微集团(深圳)有限公司 | Condition receiving module |
-
2007
- 2007-10-26 CN CNA2007101817522A patent/CN101146188A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316289A (en) * | 2010-07-09 | 2012-01-11 | 深圳Tcl新技术有限公司 | Menu processing method for dual-chip television scheme |
| US20170343241A1 (en) * | 2014-12-12 | 2017-11-30 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Method and system for controlling heat pump water heater |
| CN112637650A (en) * | 2021-01-04 | 2021-04-09 | 国微集团(深圳)有限公司 | Condition receiving module |
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