CN202374401U - Digital television system - Google Patents
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- CN202374401U CN202374401U CN2011205428385U CN201120542838U CN202374401U CN 202374401 U CN202374401 U CN 202374401U CN 2011205428385 U CN2011205428385 U CN 2011205428385U CN 201120542838 U CN201120542838 U CN 201120542838U CN 202374401 U CN202374401 U CN 202374401U
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Abstract
The utility model relates to a digital television system, which belongs to the technical field of intelligent televisions. The digital television system comprises a display, a computer mainframe and a mouse remote control. Intelligent television software having a visual user interface is operated on a computer, and generated image data and sound data are compressed by the computer and are transmitted to the display through a wireless local area network in a streaming media mode; and a compressed data stream is decoded by the display, images which are generated by computer software are displayed on a liquid crystal display (LCD), and sound is reproduced through a loudspeaker. The digital television system has the advantages of being capable of making the best of abundant application software resources of a general-purpose computer, controlling the computer through the remote control and performing intelligent television functions such as program searching, online videos, information services, interactive games, electronic shopping, video communication, software downloading, distance education and the like.
Description
Technical field
The utility model relates to a kind of digital television system, belongs to the intelligent TV set technical field.
Background technology
The fast development of Along with computer technology, mechanics of communication and consumer electronics, the networking of television set and intelligent degree improve constantly.In May, 2010, Google, Intel and Sony three companies unite the Smart TV intelligent television new product of having issued a Google TV by name.Google TV is the intelligent TV set of a stylobate in Intel Atom microprocessor chip and GoogleAndroid operating system; Can be as PC through the browser searches Web content; And watch abundant Internet video; Also can download various application software simultaneously, for TV user brings new experience.
Existing intelligent TV set is because built-in hardware computing platform and operating system software, makes it on framework, become one computing platform is integrated into the computer all-in-one machine in the display, therefore has following problem:
(1) the update cycle of LCDs and microprocessor hardware platform different, the update cycle of LCDs is generally about 10 years, and the update cycle of microprocessor hardware platform is generally some months.If will let intelligent TV set catch up with the update paces of microprocessor, can only require the user frequently to eliminate intelligent TV set.Because television set is the higher durable consumer goods of price, and the cost of LCDs accounts for about 70% of whole intelligent TV set cost, so ordinary consumer is difficult to bear the update cost of intelligent TV set product.
(2) opening of intelligent TV set hardware platform and operating system has increased the fragility and the complexity of intelligent TV set safety, makes intelligent TV set receive the infection of computer virus and the attack of network hacker easily, has a lot of potential security risks.
Summary of the invention
The purpose of the utility model is a kind of digital television of proposition system, to solve update and the information security issue that existing intelligent TV set exists.
The digital television system that the utility model proposes comprises:
Computer is used for the image that comprises user interface and video content and the voice data that generate are compressed, and is transferred to display with the Streaming Media mode through WLAN;
Display is used for the packed data stream that transmits through the WLAN receiving computer, obtains display image and audio signal after packed data stream is handled, and display image and audio signal are shown and play;
The mouse remote control device sends the key-press status and the coordinate information of mouse remote control device to display, sends computer by display to through WLAN then, realizes the control of remote controller to computer.
Display in the above-mentioned digital television system can comprise:
Tuner is used to receive the cable TV high-frequency signal, is reduced to the intermediate-freuqncy signal of a fixed frequency to the high-frequency signal that receives, and sends intermediate-freuqncy signal to if demodulator, and if demodulator links to each other with tuner;
If demodulator; Be used for the intermediate-freuqncy signal of tuner output is carried out obtaining the digital code stream signal after subband demodulation, sampling rate conversion, shaping and the correction; Send the digital code stream signal to digital television processor then, if demodulator links to each other with digital television processor;
Wireless lan controller; Be used for built-in wireless network protocol IEEE802.11 protocol stack and ICP/IP protocol stack; Display is inserted WLAN; The packed data that transmits through the WLAN receiving computer flows, and is transferred to embedded computing system, or sends the remote controller control signal to computer through WLAN;
Embedded computing system is used for the packed data stream from wireless lan controller is decompressed, and audio signal and vision signal after decompressing are sent to digital television processor, and embedded computing system links to each other with wireless lan controller;
Radio frequency receiver be used to receive the radiofrequency signal that the mouse remote control device is launched, and with being sent to digital television processor after the radiofrequency signal demodulation, radio frequency receiver links to each other with digital television processor;
Digital television processor; Be used to receive digital audio and video signals and vision signal from the digital code stream signal and the embedded computing system of if demodulator; The digital code stream signal is decoded; And digital audio and video signals and vision signal be sent to power amplifier and LCDs respectively, digital television processor links to each other with power amplifier with LCDs respectively;
LCDs is used for the digital video signal of digital television processor output is shown with image format, and LCDs links to each other with digital television processor;
Power amplifier is used for the simulated audio signal of digital television processor output is carried out power amplification, so that drive the loudspeaker plays audio signal, power amplifier links to each other with loud speaker with digital television processor respectively;
Loud speaker, the electrical signal conversion that is used for power amplifier output is a voice signal, loud speaker links to each other with power amplifier.
Embedded computing system in the above-mentioned digital television system can comprise:
USB is used for the serial communication between microprocessor and the wireless lan controller, and USB links to each other with wireless lan controller;
Digital signal processor is used for computer packed data stream is decoded, and obtains digital audio and video signals and digital video signal, and sends this digital audio and video signals and digital video signal to microprocessor, and digital signal processor links to each other with microprocessor;
Digital audio interface is used to receive the digital audio and video signals of microprocessor, and this digital audio and video signals is carried out being sent to digital television processor after the format conversion, and digital audio interface links to each other with microprocessor;
Digital visual interface is used to receive the digital video signal of microprocessor, and this digital video signal is sent to digital television processor with component format, and digital visual interface links to each other with microprocessor;
Universal asynchronous receiver and transmitter is used for the asynchronous communication between microprocessor and the digital television processor, and universal asynchronous receiver and transmitter is connected between microprocessor and the digital television processor;
Microprocessor is used for sending digital signal processor to according to the stream medium data of wireless lan controller, and will be sent to digital audio interface and digital visual interface respectively through decoded digital audio and video signals of digital signal processor and digital video signal.
The digital television system that the utility model proposes utilizes home computer as computing platform, need not to eliminate display screen, just can carry out the computing platform upgrading easily, has also reduced the whole possessing cost of digital television simultaneously.Embedded computing system wherein is the computer system of a sealing, the embedded OS that operation is special-purpose, and viral code can't get into embedded computing system running environment, fully the attack of the harm of preventing virus code and Hacker Program.
Description of drawings
Fig. 1 is the structural representation of the digital television system of the utility model proposition.
Fig. 2 is the structured flowchart of display in the system for TV set shown in Figure 1.
Fig. 3 is the structured flowchart of the embedded computing system in the display shown in Figure 2.
Among Fig. 1, the 1st, all-purpose computer, the 2nd, have the display of embedded computing system, the 3rd, the mouse remote control device.
Embodiment
The digital television system that the utility model proposes, its structural representation is as shown in Figure 1, comprising:
Computer is used for the image that comprises user interface and video content and the voice data that generate are compressed, and is transferred to display with the Streaming Media mode through WLAN;
Display is used for the packed data stream that transmits through the WLAN receiving computer, obtains display image and audio signal after packed data stream is handled, and display image and audio signal are shown and play;
The mouse remote control device sends the key-press status and the coordinate information of mouse remote control device to display, sends computer by display to through WLAN then, realizes the control of remote controller to computer.
In the digital television system of the utility model, main frame is an all-purpose computer, like family expenses desktop PC, notebook computer or panel computer etc.The mouse remote control device can be RF (RadioFrequency) RF remote of built-in micromechanical gyro.
Display in the digital television system that the utility model proposes, its structure framework is as shown in Figure 2, can comprise:
Tuner is used to receive the cable TV high-frequency signal, is reduced to the intermediate-freuqncy signal of a fixed frequency to the high-frequency signal that receives, and sends intermediate-freuqncy signal to if demodulator, and if demodulator links to each other with tuner;
If demodulator; Be used for the intermediate-freuqncy signal of tuner output is carried out obtaining the digital code stream signal after subband demodulation, sampling rate conversion, shaping and the correction; Send the digital code stream signal to digital television processor then, if demodulator links to each other with digital television processor;
Wireless lan controller; Be used for built-in wireless network protocol IEEE802.11 protocol stack and ICP/IP protocol stack; Display is inserted WLAN; The packed data that transmits through the WLAN receiving computer flows, and is transferred to embedded computing system, or sends the remote controller control signal to computer through WLAN;
Embedded computing system is used for the packed data stream from wireless lan controller is decompressed, and audio signal and vision signal after decompressing are sent to digital television processor, and embedded computing system links to each other with wireless lan controller;
Radio frequency receiver be used to receive the radiofrequency signal that the mouse remote control device is launched, and with being sent to digital television processor after the radiofrequency signal demodulation, radio frequency receiver links to each other with digital television processor;
Digital television processor; Be used to receive digital audio and video signals and vision signal from the digital code stream signal and the embedded computing system of if demodulator; The digital code stream signal is decoded; And digital audio and video signals and vision signal be sent to power amplifier and LCDs respectively, digital television processor links to each other with power amplifier with LCDs respectively;
LCDs is used for the digital video signal of digital television processor output is shown with image format, and LCDs links to each other with digital television processor;
Power amplifier is used for the simulated audio signal of digital television processor output is carried out power amplification, so that drive the loudspeaker plays audio signal, power amplifier links to each other with loud speaker with digital television processor respectively;
Loud speaker, the electrical signal conversion that is used for power amplifier output is a voice signal, loud speaker links to each other with power amplifier.
Embedded computing system in the digital television system that the utility model proposes, its structure framework is as shown in Figure 3, can comprise:
USB is used for the serial communication between microprocessor and the wireless lan controller, and USB links to each other with wireless lan controller;
Digital signal processor is used for computer packed data stream is decoded, and obtains digital audio and video signals and digital video signal, and sends this digital audio and video signals and digital video signal to microprocessor, and digital signal processor links to each other with microprocessor;
Digital audio interface; Be used to receive the digital audio and video signals of microprocessor; And this digital audio and video signals carried out being sent to digital television processor after the format conversion, digital audio interface links to each other with microprocessor, among the embodiment of the utility model; What use is the Philips of Sony digital audio interface, and what carry out is the Philips of Sony format conversion;
Digital visual interface is used to receive the digital video signal of microprocessor, and this digital video signal is sent to digital television processor with component format, and digital visual interface links to each other with microprocessor;
Universal asynchronous receiver and transmitter is used for the asynchronous communication between microprocessor and the digital television processor, and universal asynchronous receiver and transmitter is connected between microprocessor and the digital television processor;
Microprocessor is used for sending digital signal processor to according to the stream medium data of wireless lan controller, and will be sent to digital audio interface and digital visual interface respectively through decoded digital audio and video signals of digital signal processor and digital video signal.
Display in the utility model digital television system; Tuner wherein will convert digital medium-frequency signal into from the digital high-frequency signal that cable of cable TV receives; After if demodulator carried out subband demodulation, sampling rate conversion, shaping and correction to digital medium-frequency signal, output TS (Transport Stream) digital code stream was given digital television processor; Difference according to the digital television signal compression coding mode; Digital television processor can be carried out MPEG2, MPEG4 and digital decoding H.264, and the full HD vision signal of LVDS (Low-Voltage Differential Signaling) Low Voltage Differential Signal form is outputed to the LCD LCDs; The built-in audio frequency DAC of digital television processor digital to analog converter can convert decoded digital audio and video signals into simulated audio signal and export to power amplifier, after power amplification, outputs to loud speaker and produces high-quality sound.
Main frame operation wherein has the intelligent television software of visible user interface; Realize functions such as program searching, Internet video, information service, interactive game, electronic business transaction, video communication, software download, long-distance education through intelligent television software; Main frame compresses image and the voice data that intelligent television software generates, and is transferred to display with the Streaming Media mode through WLAN.
The packed data stream that wireless lan controller wherein transmits from household wireless LAN receiving computer main frame; And packed data stream is transferred to embedded computing system through USB interface; Embedded computing system decompresses to packed data stream; The vision signal of output YPbPr form is given digital television processor, thereby drives LCD LCDs display image again; The SPIDF audio signal of embedded computing system output is through power amplifier rear drive loud speaker sounding.
The RF radio frequency that radio frequency receiver reception remote controller wherein sends shakes the control signal; And deliver to digital television processor after will shaking the demodulation of control signal; Digital television processor will be shaken the control signal and sent embedded computing system to; Embedded computing system will shake the control signal through wireless lan controller again and send main frame to, thereby realize the control to main frame through indicator screen and remote controller.
Described microprocessor adopts ARM Cortex A9 monokaryon microprocessor; USB adopts USB 2.0 interfaces; Digital signal processor adopts the DSP (Digital Signal Processor) with M-JPEG decoding function; Digital audio interface adopts SPDIF (SONY/PHILIPS Digital Interface Format) digital audio interface, and digital visual interface adopts video DAC (Digital to Analog Converter) digital to analog converter, universal asynchronous receiver and transmitter to adopt UART (Universal Asynchronous Receiver/Transmitter) UART Universal Asynchronous Receiver Transmitter.
Described main frame operation has the intelligent television software of visible user interface, and main frame compresses image and the voice data that intelligent television software generates, and is transferred to display with the Streaming Media mode through WLAN.
The RF radio frequency that described radio frequency receiver reception remote controller sends shakes the control signal; And send digital television processor to through serial ports after will shaking the demodulation of control signal; Digital television processor will be shaken the control signal through the UART interface and sent embedded computing system to; Embedded computing system will shake the control signal through wireless lan controller again and be sent to main frame, thus intelligent television functions such as control computer realization program searching, Internet video, information service, interactive game, electronic business transaction, video communication, software download, long-distance education.
The packed data stream that described wireless lan controller transmits from household wireless LAN receiving computer main frame; And packed data stream is transferred to embedded computing system through USB interface; Embedded computing system decompresses to packed data stream; The vision signal of output YPbPr form is given digital television processor, thereby drives LCD LCDs display image again; The SPIDF audio signal of embedded computing system output is through audio-frequency power amplifier rear drive loud speaker sounding.
Embedded computing system in the utility model display is the embedded computer system of a sealing, can take precautions against the infection of viral code and the attack of Hacker Program.
In the digital television system of the utility model, main frame is the all-purpose computer of Installation of W indows operating system, like family expenses desktop PC, notebook computer or panel computer etc.; Described remote controller is the RF RF remote of the built-in micromechanical gyro of Shenzhen Mai Le company.
Digital television processor in the utility model display adopts the MSD209 decoding chip of stars at dawn (Mstar) semiconductor company; The JS6B number that tuner adopts Chengdu Xuguang Electronics Co., Ltd. to produce is touched integral high frequency head; If demodulator adopts the TDA9885 digital intermediate frequency demodulator of Philips company; LCDs adopts the LC420WUN-SDA1 LCDs of LG company; Power amplifier adopts the MSH9000 audio power amplifier chip of stars at dawn (Mstar) semiconductor company; Loud speaker adopts the ultra-thin LCD tv plateform loudspeaker of Shenzhen hat sound company; Wireless lan controller adopts the RTL8188CUS low-power consumption single-chip wireless lan controller of Taiwan Realtek company; Embedded computing system adopts the Hi3716C multimedia processor of Hai Si semiconductor company, and Hi3716C is based on SoC (the System on Chip) system level chip of ARM CortexA9 kernel, the integrated required peripheral circuits of embedded computing system such as DSP digital signal processor, USB interface, SPDIF digital audio interface, video DAC digital to analog converter and UART UART Universal Asynchronous Receiver Transmitter.
The operation principle of the utility model digital television system is:
Operation has the intelligent television software of visible user interface on main frame; Computer compresses image (containing user interface and video content) and the voice data that intelligent television software generates; Be transferred to display with the Streaming Media mode through WLAN; The user can control main frame through remote controller, thereby can realize the function such as program searching, Internet video, information service, interactive game, electronic business transaction, video communication, software download, long-distance education of DTV.
Built-in micromechanical gyro transducer in the remote controller, thus can with the user become coordinate data with the side-to-side movement information translation up and down, send display to through the RF radiofrequency launcher in the remote controller; The RF radio frequency that radio frequency receiver reception remote controller in the display sends shakes the control signal; And send digital television processor to through serial ports after will shaking the demodulation of control signal; Digital television processor will be shaken the control signal through the UART interface and sent embedded computing system to; Embedded computing system will shake the control signal through wireless lan controller again and be sent to main frame, thereby realize the control to main frame.
The packed data stream that wireless lan controller in the display transmits from household wireless LAN receiving computer main frame; And give embedded computing system with the packed data flow transmission; Embedded computing system decompresses to packed data stream; The vision signal of output YPbPr form is given digital television processor, thereby drives LCD LCDs display image again; The SPIDF signal of embedded computing system output is through power amplifier rear drive loud speaker sounding.
In sum; The utility model is innovated the intelligent TV set that Google, Intel and Sony three companies unite proposition in design; Utilize the computing platform of all-purpose computer, not only can make full use of the abundant application software resources of all-purpose computer, and need not to eliminate expensive LCD Panel as intelligent TV set; Just can carry out the computing platform upgrading easily, also reduce the whole possessing cost of intelligent TV set simultaneously.In addition, the embedded computing system in the display is the embedded computer system of a sealing, can take precautions against the infection of viral code and the attack of Hacker Program, has improved the information security grade of intelligent TV set.
Claims (3)
1. digital television system is characterized in that this digital television system comprises:
Computer is used for the image that comprises user interface and video content and the voice data that generate are compressed, and is transferred to display with the Streaming Media mode through WLAN;
Display is used for the packed data stream that transmits through the WLAN receiving computer, obtains display image and audio signal after packed data stream is handled, and display image and audio signal are shown and play;
The mouse remote control device sends the key-press status and the coordinate information of mouse remote control device to display, sends computer by display to through WLAN then, realizes the control of remote controller to computer.
2. digital television as claimed in claim 1 system, wherein said display comprises:
Tuner is used to receive the cable TV high-frequency signal, is reduced to the intermediate-freuqncy signal of a fixed frequency to the high-frequency signal that receives, and sends intermediate-freuqncy signal to if demodulator, and if demodulator links to each other with tuner;
If demodulator; Be used for the intermediate-freuqncy signal of tuner output is carried out obtaining the digital code stream signal after subband demodulation, sampling rate conversion, shaping and the correction; Send the digital code stream signal to digital television processor then, if demodulator links to each other with digital television processor;
Wireless lan controller; Be used for built-in wireless network protocol IEEE802.11 protocol stack and ICP/IP protocol stack; Display is inserted WLAN; The packed data that transmits through the WLAN receiving computer flows, and is transferred to embedded computing system, or sends the remote controller control signal to computer through WLAN;
Embedded computing system is used for the packed data stream from wireless lan controller is decompressed, and audio signal and vision signal after decompressing are sent to digital television processor, and embedded computing system links to each other with wireless lan controller;
Radio frequency receiver be used to receive the radiofrequency signal that the mouse remote control device is launched, and with being sent to digital television processor after the radiofrequency signal demodulation, radio frequency receiver links to each other with digital television processor;
Digital television processor; Be used to receive digital audio and video signals and vision signal from the digital code stream signal and the embedded computing system of if demodulator; The digital code stream signal is decoded; And digital audio and video signals and vision signal be sent to power amplifier and LCDs respectively, digital television processor links to each other with power amplifier with LCDs respectively;
LCDs is used for the digital video signal of digital television processor output is shown with image format, and LCDs links to each other with digital television processor;
Power amplifier is used for the simulated audio signal of digital television processor output is carried out power amplification, so that drive the loudspeaker plays audio signal, power amplifier links to each other with loud speaker with digital television processor respectively;
Loud speaker, the electrical signal conversion that is used for power amplifier output is a voice signal, loud speaker links to each other with power amplifier.
3. digital television as claimed in claim 2 system, wherein said embedded computing system comprises:
USB is used for the serial communication between microprocessor and the wireless lan controller, and USB links to each other with wireless lan controller;
Digital signal processor is used for computer packed data stream is decoded, and obtains digital audio and video signals and digital video signal, and sends this digital audio and video signals and digital video signal to microprocessor, and digital signal processor links to each other with microprocessor;
Digital audio interface is used to receive the digital audio and video signals of microprocessor, and this digital audio and video signals is carried out being sent to digital television processor after the format conversion, and digital audio interface links to each other with microprocessor;
Digital visual interface is used to receive the digital video signal of microprocessor, and this digital video signal is sent to digital television processor with component format, and digital visual interface links to each other with microprocessor;
Universal asynchronous receiver and transmitter is used for the asynchronous communication between microprocessor and the digital television processor, and universal asynchronous receiver and transmitter is connected between microprocessor and the digital television processor;
Microprocessor is used for sending digital signal processor to according to the stream medium data of wireless lan controller, and will be sent to digital audio interface and digital visual interface respectively through decoded digital audio and video signals of digital signal processor and digital video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205428385U CN202374401U (en) | 2011-12-22 | 2011-12-22 | Digital television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205428385U CN202374401U (en) | 2011-12-22 | 2011-12-22 | Digital television system |
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| Publication Number | Publication Date |
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| CN202374401U true CN202374401U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205428385U Expired - Lifetime CN202374401U (en) | 2011-12-22 | 2011-12-22 | Digital television system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517113A (en) * | 2012-09-25 | 2014-01-15 | Tcl集团股份有限公司 | Method and system for controlling content of smart television |
| CN104796764A (en) * | 2015-04-17 | 2015-07-22 | 深圳市东明炬创电子有限公司 | Home audio-visual interconnection system |
-
2011
- 2011-12-22 CN CN2011205428385U patent/CN202374401U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517113A (en) * | 2012-09-25 | 2014-01-15 | Tcl集团股份有限公司 | Method and system for controlling content of smart television |
| CN103517113B (en) * | 2012-09-25 | 2016-08-31 | Tcl集团股份有限公司 | A kind of method and system of intelligent television content-control |
| CN104796764A (en) * | 2015-04-17 | 2015-07-22 | 深圳市东明炬创电子有限公司 | Home audio-visual interconnection system |
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| GR01 | Patent grant | ||
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Granted publication date: 20120808 |
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