CN201910866U - High-definition television board card with various digital video receiving functions - Google Patents
High-definition television board card with various digital video receiving functions Download PDFInfo
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- CN201910866U CN201910866U CN2010206898523U CN201020689852U CN201910866U CN 201910866 U CN201910866 U CN 201910866U CN 2010206898523 U CN2010206898523 U CN 2010206898523U CN 201020689852 U CN201020689852 U CN 201020689852U CN 201910866 U CN201910866 U CN 201910866U
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Abstract
The utility model provides a high-definition television board card with various digital video receiving functions, which comprises an analog-to-digital integrated high-frequency receiving module. The analog-to-digital integrated high-frequency receiving module includes a digital signal tuner and an analog signal tuner; a signal output end of the analog signal tuner is directly connected with a liquid crystal television driving chip; a signal output end of the digital signal tuner is connected with a conditional access module by the aid of a code stream selecting and switching component; a signal output end of the conditional access module is connected with an MPEG (moving picture expert group) decoding chip; the MPEG decoding chip is further respectively connected with the liquid crystal television driving chip, a keyboard interface, an infrared remote control module interface, an LED indicating lamp interface and a standby and power supply control module; and the liquid crystal television driving chip is respectively connected with a plurality of audio and video input interfaces and a liquid crystal display screen interface. The high-definition television board card is capable of receiving various digital video signals without adding external equipment, and has the advantages of various functions, simplicity and convenience in operation and the like.
Description
Technical field
The utility model relates to the television set integrated circuit board, particularly a kind of HDTV (High-Definition Television) machine board card with multiple digital video receiving function.
Background technology
Conventional domestic television set integrated circuit board can only receive simulation OCTV signal and analog catv signal.For simulation OCTV signal, because transmission is analog signal, its waveform is easy to be superposeed and " distortion, distortion " by the signal of other electronic equipment.And for the analog catv signal, though than module OCTV signal, have and receive that image quality is clear, signal stabilization, watch advantages such as number of programs is many since still transmission be analog signal, its signal quality still is subjected to external interference easily.
In recent years, for satisfying the user to watching the requirements at the higher level of television picture quality, digital TV set-top box replaces traditional analog OCTV signal and analog catv signal gradually.Digital TV set-top box is a kind of conversion equipment that digital television signal is converted to anolog TV signals, it is to the reduction of decoding through the image of digitalization compressed and voice signal, produce the video and the voice signal of simulation, provide high-quality TV programme to spectators by television indicator and stereo set.
But,, usually need to place a plurality of set-top box near the conventional television for satisfying people to the requirement that multiple digital television signal receives.Various set-top box are placed near the television set, have not only taken more space, seem in disorder especially near making television set; And each set-top box all has the power line (some is furnished with power supply adaptor) of oneself, all needs the audio frequency and video line with at least one group to be connected on the interface of television set correspondence, has strengthened the difficulty of using.
The utility model content
Above-mentioned defective at the prior art existence, the utility model provides a kind of HDTV (High-Definition Television) machine board card with multiple digital video receiving function, under the prerequisite that does not increase external equipment, can receive multiple digital video signal, have advantages such as diverse in function, easy and simple to handle, space hold are few.
The technical solution of the utility model is as follows:
The utility model provides a kind of HDTV (High-Definition Television) machine board card with multiple digital video receiving function, comprising: digital/analog integratedization high frequency receiver module, and described digital/analog integratedization high frequency receiver module comprises digital signal tuner and analog signal tuner; Described analog signal tuner signal output part directly is connected with the LCD TV chip for driving; The signal output part of described digital signal tuner is connected with Conditional Access Module by the code stream selection switching part; The signal output part of described Conditional Access Module is connected with the mpeg decode chip; Described mpeg decode chip also is connected with described LCD TV chip for driving, keypad interface, infrared remote control module interface, LED light interface and standby, power supply control module respectively; The signal input part of described standby, power supply control module also is connected with described keypad interface, and the signal output part of described standby, power supply control module also is connected with described LED light interface, power interface respectively; Described LCD TV chip for driving is connected with respectively: a plurality of audio frequency and video input interfaces, LCDs interface and voltage inversion module interface backlight; Described LCD TV chip for driving also is connected with speaker interface by audio frequency power amplifier module.
Preferably, the digital signal of described digital signal tuner reception comprises: satellite-signal, ground signal and cable TV signal; Described satellite-signal comprises: DVB-S, DVB-S2; Described ground signal comprises: DVB-T, DMB-T; Described cable TV signal comprises: DVB-C.
Preferably, described a plurality of audio frequency and video input interface comprises one or more in the following interface: S-Video interface, mixed video RCA interface, SCART interface, YPbPr components R CA interface, VGA interface, HDMI interface, two groups of RCA terminals, Phone terminal.
Preferably, on described mpeg decode chip, also be connected with USB interface.
The beneficial effects of the utility model are as follows:
The HDTV (High-Definition Television) machine board card with multiple digital video receiving function that present embodiment provides under the prerequisite that does not increase external equipment, can receive multiple digital video signal, has advantages such as diverse in function, easy and simple to handle, space hold are few.In addition, have a plurality of audio frequency and video input interfaces, expanded television function; By keypad and remote controller television set is controlled, strengthened man-machine interaction.
Description of drawings
The structural representation of the HDTV (High-Definition Television) machine board card that Fig. 1 provides for the utility model embodiment with multiple digital video receiving function.
Embodiment
As shown in Figure 1, a kind of HDTV (High-Definition Television) machine board card that provides for the utility model embodiment with multiple digital video receiving function, comprise: digital/analog integratedization high frequency receiver module, described digital/analog integratedization high frequency receiver module comprises digital signal tuner and analog signal tuner; Described analog signal tuner signal output part directly is connected with the LCD TV chip for driving; The signal output part of described digital signal tuner is connected with Conditional Access Module by the code stream selection switching part; The signal output part of described Conditional Access Module is connected with the mpeg decode chip; Described mpeg decode chip also is connected with described LCD TV chip for driving, USB interface, keypad interface, infrared remote control module interface, LED light interface and standby, power supply control module respectively; The signal input part of described standby, power supply control module also is connected with described keypad interface, and the signal output part of described standby, power supply control module also is connected with described LED light interface, power interface respectively; Described LCD TV chip for driving is connected with respectively: a plurality of audio frequency and video input interfaces, LCDs interface and voltage inversion module interface backlight; Described LCD TV chip for driving also is connected with speaker interface by audio frequency power amplifier module.
Introduce the operation principle of each functional part in this device below in detail:
(1) digital/analog integratedization high frequency receiver module
Digital/analog integratedization high frequency receiver module is that the reception of multiple signal and demodulation function are integrated on the wiring board, and is encapsulated in the housing.Comprise digital signal tuner and analog signal tuner, wherein, the analog signal tuner is used to receive wired analog signal, demodulation output mixed video signal and intercarrier sound signal, and send to the LCD TV chip for driving.The digital signal tuner is used to receive various digital signals, comprising: satellite-signal, ground signal and cable TV signal; Described satellite-signal comprises: DVB-S, DVB-S2; Described ground signal comprises: DVB-T, DMB-T; Described cable TV signal comprises: DVB-C.Demodulation output digital transport stream (TS stream) with remote controller operation TS stream, makes the TS stream of digital tuner output send to the code stream selection switching part.
(2) code stream selection switching part
The code stream selection switching part reads the GPIO state, operates according to the user and selects a kind of output code flow, and send to Conditional Access Module.
(3) Conditional Access Module
The task of Conditional Access Module is to guarantee that the DVB business only is authorized to the user and receives, and its major function is to the signal descrambling, to the user's electronic secret key decryption.The utility model provides two groups of general-purpose interfaces, is applicable to multiple scrambling system, and the user can insert two Conditional Access Modules simultaneously according to the rating demand, receives the program of different scrambling systems.
(4) mpeg decode chip
The mpeg decode chip is the core processor of system, and each operation of user all will could realize through its processing.Major function comprises: (1) is according to user selected program, TS stream to the output of digital/analog integratedization high frequency receiver module carries out demultiplexing, Voice ﹠ Video data from the selected program of transmission extracting data, and program specific information, information on services and enciphered data, export the Voice ﹠ Video of corresponding program and give the liquid crystal television drive chip.(2) be connected with infrared remote control module interface and keypad interface, realize man-machine interaction.Can connect the infrared remote control module by the infrared remote control module interface, thereby receive user's straighforward operation, realize that the user realizes the purpose of various operations by remote controller.Except that controlling the television set by the infrared remote control module, button is an another kind of mode of controlling television set, and the user can realize changing various operations such as platform, volume adjusting, screen display adjusting by button.(3) be connected with USB interface, the user can use this USB interface, to system software upgrading, plays the video frequency program on the external memory storage by USB interface, can browse, appreciate photo and exquisite picture TV as electron album.(4) be connected with the LED light interface.With the LED light that the LED light interface links to each other, be mainly used in the holding state that shows television set, operating state, System self-test state etc.(5) be connected with standby, power supply control module.The core of standby, power supply control module is a low-power consumption MCU, is responsible for the switch for the treatment of on switch and the keypad treated of monitoring remote controller, and any one among both is pressed, and it will make system enter holding state, perhaps system be waken up from holding state.
The mpeg decode chip is connected with the LCD TV chip for driving by the asynchronous serial communication mode, realizes the control to the LCD TV chip for driving, and then realizes functions such as video source switching, OSD demonstration, screen display adjustment, volume adjusting.
(5) power interface
Link to each other with power module by power interface, when the input power supply was interchange, power module comprises exchanging changeed Dc low voltage power supply plate, DC-DC voltage transformation module two parts.Wherein exchange the supply power voltage that only offers standby, a 5V of power supply control module when changeing the standby of Dc low voltage power supply plate, during system works, the many groups of output voltage is to meet the different needs.Wherein the DC-DC voltage transformation module is many group DC-DC voltage conversion circuits, converts 12V on the system host board needed various voltages.
When the input power supply was direct current 12V, power module comprised DC-DC voltage transformation module, voltage transitions chip, low internal resistance metal-oxide-semiconductor three parts of big electric current.Wherein the voltage transitions chip is the linear voltage regulator of a 5V, and the 5V of voltage stabilizing output supplies with standby, power supply control module.Wherein big electric current hangs down the on-off action that act as of internal resistance metal-oxide-semiconductor, and it is the switch that whole system power supply and standby are turn-offed.
(6) LCD TV chip for driving
All audio frequency and video inputs comprise the audio frequency and video that the MPEGMPEG decoding chip is exported, and all will be connected to the LCD TV chip for driving, and according to user's operation, the LCD TV chip for driving is selected corresponding input source, and convert the digital signal that drives display screen to.It also has the function that display parameters such as, brightness backlight to liquid crystal display screen, colourity are adjusted in addition.
On the LCD TV chip for driving, be connected with the following function module: (1) a plurality of audio frequency and video input interfaces; Include but not limited to: S-Video interface, mixed video RCA interface, SCART interface, YPbPr components R CA interface, VGA interface, HDMI interface, two groups of RCA terminals, Phone terminal.Wherein, VGA and HDMI interface can connect electronic equipments such as computer that the outside has high-definition signal source output, game machine, just can use the display of television set as electronic equipments such as computer, game machines.(2) be connected with voltage inversion module backlight by voltage inversion module interface backlight, this voltage inversion module backlight is connected with LCDs.Voltage inversion module backlight is with 12V direct current or the input of 24V direct current, is reverse into the voltage inversion plate of the required ac high voltage of LCD screen backlight fluorescent tube.Be controlled by the LCD TV chip for driving, backlight light with extinguish, backlight illumination regulates all and realizes by controlling voltage inversion module backlight.LCDs is the liquid crystal panel of a tool high Resolution and Large Size, resolution 1680*1050 and more than, size 22 cun and more than.(3) be connected with speaker interface by audio frequency power amplifier module.Because the audio frequency of the audio frequency of outside input and the output of mpeg decode chip all is a micropower, can not directly drive the loud speaker sounding.Audio frequency power amplifier module adopts special-purpose audio-frequency power amplifier, the audio frequency amplitude of carrying out is amplified and power amplification, thereby drive the loud speaker sounding.Loud speaker is two 4O or 8O, and the loudspeaker of 3～10W are realized monophony, left and right acoustic channels, reached stereo sound output.
Therefore, the HDTV (High-Definition Television) machine board card with multiple digital video receiving function that present embodiment provides under the prerequisite that does not increase external equipment, can receive multiple digital video signal, has advantages such as diverse in function, space hold easy and simple to handle are few.In addition, have a plurality of audio frequency and video input interfaces, expanded the function of television set integrated circuit board; By keypad and remote controller television set is controlled, strengthened man-machine interaction.
Claims (4)
1. the HDTV (High-Definition Television) machine board card with multiple digital video receiving function is characterized in that, comprising: digital/analog integratedization high frequency receiver module, and described digital/analog integratedization high frequency receiver module comprises digital signal tuner and analog signal tuner; Described analog signal tuner signal output part directly is connected with the LCD TV chip for driving; The signal output part of described digital signal tuner is connected with Conditional Access Module by the code stream selection switching part; The signal output part of described Conditional Access Module is connected with the mpeg decode chip; Described mpeg decode chip also is connected with described LCD TV chip for driving, keypad interface, infrared remote control module interface, LED light interface and standby, power supply control module respectively; The signal input part of described standby, power supply control module also is connected with described keypad interface, and the signal output part of described standby, power supply control module also is connected with described LED light interface, power interface respectively; Described LCD TV chip for driving is connected with respectively: a plurality of audio frequency and video input interfaces, LCDs interface and voltage inversion module interface backlight; Described LCD TV chip for driving also is connected with speaker interface by audio frequency power amplifier module.
2. the HDTV (High-Definition Television) machine board card with multiple digital video receiving function according to claim 1 is characterized in that, the digital signal that described digital signal tuner receives comprises: satellite-signal, ground signal and cable TV signal; Described satellite-signal comprises: DVB-S, DVB-S2; Described ground signal comprises: DVB-T, DMB-T; Described cable TV signal comprises: DVB-C.
3. the HDTV (High-Definition Television) machine board card with multiple digital video receiving function according to claim 1, it is characterized in that described a plurality of audio frequency and video input interfaces comprise one or more in the following interface: S-Video interface, mixed video RCA interface, SCART interface, YPbPr components R CA interface, VGA interface, HDMI interface, two groups of RCA terminals, Phone terminal.
4. the HDTV (High-Definition Television) machine board card with multiple digital video receiving function according to claim 1 is characterized in that, also is connected with USB interface on described mpeg decode chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206898523U CN201910866U (en) | 2010-12-30 | 2010-12-30 | High-definition television board card with various digital video receiving functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206898523U CN201910866U (en) | 2010-12-30 | 2010-12-30 | High-definition television board card with various digital video receiving functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910866U true CN201910866U (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206898523U Expired - Fee Related CN201910866U (en) | 2010-12-30 | 2010-12-30 | High-definition television board card with various digital video receiving functions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873900A (en) * | 2014-03-21 | 2014-06-18 | 深圳市视纬通科技有限公司 | TV multi-tuner switching method |
| CN106357997A (en) * | 2016-10-24 | 2017-01-25 | 深圳创维－Rgb电子有限公司 | Method, device, assistant module and television for assisting use of television terminal interface |
| CN108415684A (en) * | 2018-05-08 | 2018-08-17 | 上海彭创教育科技有限公司 | A kind of intelligent blackboard list Driver Card |
| CN109656501A (en) * | 2018-11-28 | 2019-04-19 | 苏州佳世达电通有限公司 | The control method of display |
| CN113903287A (en) * | 2021-12-09 | 2022-01-07 | 中国电子科技集团公司第十五研究所 | Display driving board |
-
2010
- 2010-12-30 CN CN2010206898523U patent/CN201910866U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873900A (en) * | 2014-03-21 | 2014-06-18 | 深圳市视纬通科技有限公司 | TV multi-tuner switching method |
| CN106357997A (en) * | 2016-10-24 | 2017-01-25 | 深圳创维－Rgb电子有限公司 | Method, device, assistant module and television for assisting use of television terminal interface |
| CN108415684A (en) * | 2018-05-08 | 2018-08-17 | 上海彭创教育科技有限公司 | A kind of intelligent blackboard list Driver Card |
| CN109656501A (en) * | 2018-11-28 | 2019-04-19 | 苏州佳世达电通有限公司 | The control method of display |
| CN113903287A (en) * | 2021-12-09 | 2022-01-07 | 中国电子科技集团公司第十五研究所 | Display driving board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20171230 |