CN201315638Y - Television set - Google Patents
Television set Download PDFInfo
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- CN201315638Y CN201315638Y CNU2008202134890U CN200820213489U CN201315638Y CN 201315638 Y CN201315638 Y CN 201315638Y CN U2008202134890 U CNU2008202134890 U CN U2008202134890U CN 200820213489 U CN200820213489 U CN 200820213489U CN 201315638 Y CN201315638 Y CN 201315638Y
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- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 14
- 230000005236 sound signal Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000004044 response Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model suits the technical field of television sets, and provides a television set. The television set comprises a digital-analog integrated high-frequency head, a demodulation chip, and a main chip, wherein the digital-analog integrated high-frequency head receives and processes analog or digital high-frequency television signals; the demodulation chip is connected with the digital-analog integrated high-frequency head for receiving medium-frequency signals from the digital-analog integrated high-frequency head and outputting a transport stream; and the main chip is connected with the digital-analog integrated high-frequency head and the demodulation chip, and is used for receiving a composite video signal and a second accompanying sound medium-frequency signal which are obtained by processing the analog signals by the digital-analog integrated high-frequency head and the transport stream, and respectively transmitting the processed video and audio signals to a display screen and an audio output unit. By integrating the main chip, the demodulation chip and the digital-analog integrated high-frequency head, the television set can receive analog and DTMB digital television high-frequency signals at the same time by use of less chips, and has the advantages of good reception effect of multi-carrier and single-carrier transmission, high integrity, low cost, convenient manufacture and effectively reduced failure rate.
Description
Technical field
The utility model belongs to technical field of television sets, relates in particular to a kind of television set.
Background technology
China Digital TV ground broadcast transfer system standard (Digital Television TerrestrialMultimedia Broadcast DTMB) is approved for mandatory national standard on August 18th, 2006, and in enforcement on August 1 in 2007.And the holding of the 2008 Beijing Olympic Games, the part of terrestrial DTV is open-minded, not only makes the Olympic sport event program of watching high definition become consumer's active demand, has also promoted developing rapidly of domestic Digital Television market simultaneously greatly.And the television set that can play the DTMB digital signal at present on the market is also few, enable promptly to realize that the television set of DTMB digital signal broadcast is usually by tuner, modulus conversion chip, demodulation chip, Video Decoder, audio process, central processing unit, audio-frequency power amplifier and relational storage are formed, the chip that needs is more, the peripheral circuit complexity, integrated level is low, the cost cost is but very high, the average price costliness, and can only be better to a kind of reception of multi-carrier transmission in the present terrestrial DTV circulation way and single carrier transmission on the function, then relatively poor to the reception of another kind of transmission means.
The utility model content
The purpose of this utility model is to provide a kind of television set, and it is low to be intended to solve the current television set integrated level that can realize that anolog TV signals and DTMB digital television signal receive, and causes the problem that cost is higher, average price is expensive.
The utility model is achieved in that a kind of television set, comprises display screen, audio output unit, and described television set also comprises:
Digital analog integrated tuner receives simulated television high-frequency signal or DTMB Digital Television high-frequency signal and handles, and base band audio-video signal or the DTMB intermediate-freuqncy signal that processing obtains spread out of;
Demodulation chip links to each other with described digital analog integrated tuner, and receive through described digital analog integrated tuner and handle the intermediate-freuqncy signal that obtains behind the DTMB Digital Television high-frequency signal, after handling, the transmission stream that output obtains;
Master chip, be connected with described demodulation chip with described digital analog integrated tuner, receive the base band audio-video signal that described digital analog integrated tuner treatment of simulated television high frequency signal obtains and the transmission stream of described demodulation chip output, handle, and vision signal and the audio signal that processing obtains is transferred to described display screen and described audio output unit respectively.
The utility model compared with prior art, beneficial effect is: the utility model is by integrating demodulation chip, the master chip of substitution video decoder, audio process and central processing unit and digital analog integrated tuner have been realized the function of television for play anolog TV signals and DTMB digital television signal, the demand that has met current domestic market, the chip that realization of the present utility model is adopted is less, integrated level is higher, cost is lower, be convenient to produce and reduced failure rate effectively, alleviated burden after sale.
Description of drawings
Fig. 1 is the structural representation general diagram of the television set that provides of the utility model embodiment;
Fig. 2 is the schematic block diagram that the television set that provides of the utility model embodiment receives the treatment of simulated TV signal;
Fig. 3 is that the television set that the utility model embodiment provides receives the schematic block diagram of handling the DTMB digital television signal.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, by integrating demodulation chip, the master chip of substitution video decoder, audio process and central processing unit and digital analog integrated tuner make television set not only realize playing the function of anolog TV signals and DTMB digital television signal on function, and it is all very good to the reception of multi-carrier transmission and single carrier transmission, the integrated level height, cost is lower, is convenient to produce and reduced failure rate effectively, has alleviated burden after sale.
Fig. 1 shows the structural representation of the television set that the utility model embodiment provides, and for convenience of description, only shows the part relevant with the utility model embodiment.
With reference to Fig. 1 as can be seen, master chip 12, demodulation chip 11, digital analog integrated tuner 10 pass through I
2The C bus is carried out communication.Master chip 12 can pass through I
2The work of the total line traffic control demodulation chip 11 of C, digital analog integrated tuner 10.
In addition, master chip 12 also receives the control signal of the user of control button and indicating equipment 13 transmission by television set button and remote controller key input, and carries out respective response by the indicating equipment of television set.As according to the light on and off of the open/stand signal controlling television set open/stand indicator light LED that receives etc.
Schematic block diagram when Fig. 2 shows television set that the utility model embodiment provides and receives the treatment of simulated TV signal, for convenience of description, relevant part when the television set that provides with the utility model embodiment only being provided receiving the treatment of simulated TV signal.
With reference to Fig. 2 as can be known, when the TV signal that will receive is the simulated television high-frequency signal, master chip 21 switches to digital analog integrated tuner 20 by the I2C bus corresponding modes of anolog TV signals, digital analog integrated tuner 20 becomes the 38MHz intermediate-freuqncy signal with the analog that receives earlier, after intermediate level circuit processing unit through being built in digital analog integrated tuner 20 201 is handled again, export the base band audio-video signal at last, described base band audio-video signal comprises composite video signal (Composite Video Broadcast Signal, CVBS) and second accompanying sound intermediate frequency signal, master chip 21 receives the CVBS of intermediate level circuit processing unit 201 outputs of digital analog integrated tuner 20, carry out analog-to-digital conversion, decoding, processing such as convergent-divergent back exports display screen 23 to LVDS and shows, simultaneously digital analog integrated tuner 20 outputs second sound intermediate frequency is to master chip 21, after output audio signal to power amplifier 24 amplifies after master chip 21 is handled, sound by audio output unit 25.Wherein memory cell 26 links to each other with master chip 21, and the data in the course of work are stored work accordingly, and memory cell 26 can comprise DDR, FLASH, EEPROM, and wherein DDR is used for the data such as image of the temporary course of work; FLASH is used for the storage system program; EEPROM is used for storing the state information of the course of work.
In addition, master chip 21 also receives the control signal of the user of control button and indicating equipment 22 transmission by television set button and remote controller key input, and carries out respective response by the indicating equipment of television set.As according to the light on and off of the open/stand signal controlling television set open/stand indicator light LED that receives etc.
The television set that Fig. 3 shows the utility model embodiment to be provided receives the schematic block diagram when handling DTMB Digital Television high-frequency signal, for convenience of description, only show the television set that provides with the utility model embodiment and receive part relevant when handling DTMB Digital Television high-frequency signal.
With reference to Fig. 3 as can be known, when the TV signal that will receive was DTMB Digital Television high-frequency signal, master chip 32 passed through I
2The C bus switches to digital analog integrated tuner 30 corresponding modes of digital television signal, the DTMB radiofrequency signal is exported the DTMB intermediate-freuqncy signals to demodulation chip 31 through digital analog integrated tuner 30 backs, analog to digital converter 311 by demodulation chip 31 inside is converted to digital medium-frequency signal, through system synchronization, the signal demodulation, inverse fourier transform, inverse discrete fourier transform, error correction decoding, after deinterleavings etc. are handled, output serial or parallel TS stream, deliver to the TS stream input port of master chip 32, through demultiplexing, the MPEG-2 decoding, the vision signal that solves is exported LVDS signal to display screen 34 and is shown behind convergent-divergent, the MPEG-2 decoding solves audio signal simultaneously, after exporting power amplifier 35 to after digital to analog converter 321 conversion through being built in master chip 32 and amplifying, export by audio output unit 36.Wherein memory cell 37 links to each other with demodulation chip 31 with master chip 32 respectively with SDRAM38, data in the course of work are stored work accordingly, memory cell 37 can comprise DDR, FLASH, EEPROM, and wherein DDR is used for the data such as image of the temporary course of work; FLASH is used for the storage system program; EEPROM is used for storing the state information of the course of work.
In addition, master chip 32 also receives the control signal of the user of control button and indicating equipment 33 transmission by television set button and remote controller key input, and carries out respective response by the indicating equipment of television set.As according to the light on and off of the open/stand signal controlling television set open/stand indicator light LED that receives etc.
Among the utility model embodiment, the model of master chip is MSD189CL, the model of demodulation chip is LGS-8G42 or LGS-8G52, and wherein LGS-8G42 and LGS-8G52 are real single carrier and multicarrier fusion chip, and be all very good to the demodulation performance of single carrier and multicarrier.
The utility model embodiment is built-in with the demodulation chip of analog to digital converter by integration, the master chip and the digital analog integrated tuner that have substituted Video Decoder, audio process and central processing unit make television set not only realize playing the function of anolog TV signals and DTMB digital television signal, the demand that has met current domestic market, and the reception to multi-carrier transmission and single carrier transmission is all very good on the function, the chip that adopts is less, the integrated level height, cost is lower, be convenient to produce and reduced failure rate effectively, alleviated burden after sale.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1, a kind of television set comprises display screen, audio output unit, it is characterized in that, described television set also comprises:
Digital analog integrated tuner receives simulated television high-frequency signal or DTMB Digital Television high-frequency signal and handles, and base band audio-video signal or the DTMB intermediate-freuqncy signal that processing obtains spread out of;
Demodulation chip links to each other with described digital analog integrated tuner, and receive through described digital analog integrated tuner and handle the intermediate-freuqncy signal that obtains behind the DTMB Digital Television high-frequency signal, after handling, the transmission stream that output obtains;
Master chip, be connected with described demodulation chip with described digital analog integrated tuner, receive the base band audio-video signal that described digital analog integrated tuner treatment of simulated television high frequency signal obtains and the transmission stream of described demodulation chip output, handle, and vision signal and the audio signal that processing obtains is transferred to described display screen and described audio output unit respectively.
2, television set as claimed in claim 1 is characterized in that, the built-in analog to digital converter of described demodulation chip.
3, television set as claimed in claim 1 is characterized in that, described master chip passes through I
2The C bus is connected with described demodulation chip with described digital analog integrated tuner, and described master chip passes through I
2The switching of the described digital analog integrated tuner of the total line traffic control of C between anolog TV signals mode of operation and digital television signal mode of operation.
4, television set as claimed in claim 1 is characterized in that, described television set further comprises:
Power amplifier connects described master chip and described audio output unit, described master chip is handled being transferred to described audio output unit after the audio signal that obtains is amplified and exporting.
5, television set as claimed in claim 1 is characterized in that, described television set further comprises:
Memory cell links to each other with described master chip, stores the data message that receives in the described master chip processing procedure.
6, television set as claimed in claim 5 is characterized in that, described memory cell comprises DDR, FLASH, EEPROM.
7, television set as claimed in claim 1 is characterized in that, described television set further comprises:
SDRAM links to each other with described demodulation chip, the data message in the temporary described demodulation chip course of work during deinterleaving.
8, television set as claimed in claim 1 is characterized in that, described television set further comprises:
Control button and indicating equipment link to each other with described master chip, and the control information that the user is imported by the control button is transferred to described master chip, and receive the response signal that described master chip processing obtains, and respond by the control indicating equipment.
9, television set as claimed in claim 1 is characterized in that, the model of described master chip is MSD189CL.
10, television set as claimed in claim 1 is characterized in that, the model of described demodulation chip is LGS-8G42 or LGS-8G52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202134890U CN201315638Y (en) | 2008-11-11 | 2008-11-11 | Television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202134890U CN201315638Y (en) | 2008-11-11 | 2008-11-11 | Television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315638Y true CN201315638Y (en) | 2009-09-23 |
Family
ID=41127442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202134890U Expired - Fee Related CN201315638Y (en) | 2008-11-11 | 2008-11-11 | Television set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315638Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078416A1 (en) * | 2013-11-29 | 2015-06-04 | 乐视致新电子科技（天津）有限公司 | Television signal receiving module and receiving method |
-
2008
- 2008-11-11 CN CNU2008202134890U patent/CN201315638Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078416A1 (en) * | 2013-11-29 | 2015-06-04 | 乐视致新电子科技（天津）有限公司 | Television signal receiving module and receiving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20111111 |