CN201571146U - Broadcast/television signal processing system and broadcast/television signal player - Google Patents
Broadcast/television signal processing system and broadcast/television signal player Download PDFInfo
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- CN201571146U CN201571146U CN2009202608590U CN200920260859U CN201571146U CN 201571146 U CN201571146 U CN 201571146U CN 2009202608590 U CN2009202608590 U CN 2009202608590U CN 200920260859 U CN200920260859 U CN 200920260859U CN 201571146 U CN201571146 U CN 201571146U
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Abstract
The utility model, which is applicable to the technical field of broadcast/television signal processing, provides a broadcast/television signal processing system and a broadcast/television signal player. The system comprises a tuner, a central processor and an up-converter; the tuner respectively and sequentially selects, amplifies and mixes digital broadcast/television signals and analog broadcast/television signals received by a broadcast/television signal receiving antenna to obtain digital broadcast/television signals or analog broadcast/television signals with fixed intermediate frequency; the central processor sequentially demodulates, demultiplexes and decodes the digital broadcast/television signals processed by the tuner, and after being modulated to a predetermined channel, the decoded digital broadcast/television signals are displayed by a display unit; and after being modulated to a predetermined channel by the up-converter, the analog broadcast/television signals processed by the tuner are displayed by the display unit. Compared with the DTA provided by the prior art, the utility model can process analog or digital television signals, thus broadening the application range.
Description
Technical field
The utility model belongs to the broadcast television signal processing technology field, relates in particular to a kind of broadcast television signal treatment system and broadcast television signal playing device.
Background technology
Digital Television adapter (the Digital Transport Adapter that is widely used in North America market at present, DTA), its major function is that the digital broadcasting-television signal that will receive is decoded into TS stream signal, be modulated into (North America) NTSC (National TelevisionStandards Committee by its inner modulation module again, NTSC) behind the CH3/CH4 analog radio-frequency signal, deliver to the simulated television display terminal and show.
Yet the DTA that prior art provides can only handle the digital broadcasting-television signal in the network that receives, and can't handle the analog television broadcast signal in the network that receives, and is of limited application.
The utility model content
The purpose of the utility model embodiment is to provide a kind of broadcast television signal treatment system, and the DTA that being intended to solve prior art provides can't handle the problem that should be limited in scope to the analog television broadcast signal of using in the network that receives.
The utility model embodiment is achieved in that a kind of broadcast television signal treatment system, and described system comprises:
The tuner that connects broadcast television signal reception antenna output, described tuner to digital broadcasting-television signal and analog television broadcast signal that described broadcast television signal reception antenna receives select in turn respectively, amplification and Frequency mixing processing, obtain having the digital broadcasting-television signal or the analog television broadcast signal of fixed intermediate frequency;
The central processing unit that connects described tuner, the digital broadcasting-television signal that described central processing unit obtains after described tuner is handled carries out demodulation in turn, demultiplexing and decoding processing after the digital broadcasting-television signal that decoding is obtained is modulated to predetermined channel again, show by display unit;
After the analog television broadcast signal that the upconverter that connects described tuner, described upconverter obtain after described tuner is handled is modulated to predetermined channel, show by described display unit.
In above-mentioned broadcast television signal treatment system, described display unit comprises a display terminal, and described system also comprises:
Signal input part connects the radio-frequency (RF) switch that described central processing unit and upconverter, signal output part connect described display terminal, described central processing unit is simultaneously by being arranged at a general I/O (the General Purpose Input Output on the described central processing unit, GPIO) interface connects described radio-frequency (RF) switch, described central processing unit is according to the switching signal of user input, controls described radio-frequency (RF) switch by described GPIO interface and switches that described central processing unit connects described display terminal or described upconverter connects described display terminal.
In above-mentioned broadcast television signal treatment system, described display unit can also comprise two display terminals, described two display terminals connect described central processing unit and described upconverter respectively, and show the analog television broadcast signal after digital broadcasting-television signal after described central processing unit is handled and described upconverter are handled respectively.
In above-mentioned broadcast television signal treatment system, described central processing unit is by first twin wire universal serial bus (the Inter-Integrated Circuit, I2C) connect described upconverter, the analog television broadcast signal that described central processing unit obtains after by the described upconverter of the total line traffic control of a described I2C described tuner being handled is modulated to predetermined channel.
In above-mentioned broadcast television signal treatment system, described central processing unit connects described tuner by the 2nd I2C bus, and described central processing unit carries out frequency locking by the described tuner of the total line traffic control of described the 2nd I2C to digital broadcasting-television signal or the analog television broadcast signal that described tuner receives.
In above-mentioned broadcast television signal treatment system, described system also comprises:
The memory cell that connects described central processing unit, the digital broadcasting-television signal that the described broadcast television signal reception antenna of described cell stores receives and the rendition list of analog television broadcast signal, and with of screen menu type regulative mode (On-screen Display, OSD) demonstration of described the rendition list by described display unit demonstration.
Another purpose of the utility model embodiment is to provide a kind of broadcast television signal playing device, comprise display unit, and the broadcast television signal reception antenna of receiving digital broadcast TV signal and analog television broadcast signal, described device also comprises the broadcast television signal treatment system that is connected with described broadcast television signal reception antenna output, and described broadcast television signal treatment system adopts aforesaid broadcast television signal treatment system.
Central processing unit and the upconverter of the broadcast television signal treatment system that the utility model embodiment provides by wherein realizes reception, processing and broadcast to digital broadcasting-television signal and/or analog television broadcast signal, DTA compared to prior art provides has expanded range of application.
Description of drawings
Fig. 1 is the schematic diagram of the broadcast television signal playing device that provides of the utility model embodiment;
Fig. 2 is the concrete structure figure of broadcast television signal treatment system among Fig. 1.
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.
The utility model embodiment realizes the digital broadcasting-television signal that the broadcast television signal reception antenna is received and the processing of analog television broadcast signal by the broadcast television signal treatment system.
Fig. 1 shows the principle of the broadcast television signal playing device that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
The broadcast television signal playing device that the utility model embodiment provides comprises: display unit 3; The broadcast television signal reception antenna 2 of receiving digital broadcast TV signal and analog television broadcast signal; The broadcast television signal treatment system 1 that is connected with broadcast television signal reception antenna 2 outputs, digital broadcasting-television signal and analog television broadcast signal that 1 pair of broadcast television signal reception antenna 2 of broadcast television signal treatment system receives are selected respectively in turn, amplify and Frequency mixing processing, to obtain having the digital broadcasting-television signal or the analog television broadcast signal of fixed intermediate frequency, afterwards the digital broadcasting-television signal with fixed intermediate frequency that obtains is carried out demodulation in turn, demultiplexing and decoding processing, after again the digital broadcasting-television signal that obtains after the decoding processing being modulated to predetermined channel, show this digital broadcasting-television signal by the display unit 3 that is connected with broadcast television signal treatment system 1 output, and/or after the analog television broadcast signal with fixed intermediate frequency that will obtain is modulated to predetermined channel, show these analog television broadcast signals by the display unit 3 that is connected with broadcast television signal treatment system 1 output.
In addition, among the utility model embodiment, the digital broadcasting-television signal that broadcast television signal treatment system 1 can also stored broadcast TV signal reception antenna 2 receives and the rendition list of analog television broadcast signal, and this rendition list shown by the OSD that display unit 3 shows.Because analog television broadcast signal does not possess the OSD Presentation Function, the OSD that the technical scheme that adopts the utility model embodiment to provide can be passed through the rendition list of analog television broadcast signal digital broadcasting-television signal shows, has satisfied the demand of client to the television interfaces tabulation of analog television broadcast signal.
During use, the rendition list that OSD comprised that the user shows according to display unit 3, select digital broadcast television program or the analog TV broadcasting program that to watch by remote controller or other signal input apparatus, broadcast television signal treatment system 1 is carried out frequency locking according to user's input to digital broadcasting-television signal or the analog television broadcast signal that broadcast television signal treatment system 1 receives, and shows and the corresponding TV programme of user selected program by display unit 3.
In addition, among the utility model embodiment, display unit 3 can comprise a display terminal or a plurality of display terminal, when display unit 3 comprises a display terminal, broadcast television signal treatment system 1 can also further have the function of switching digital broadcasting-television signal or analog television broadcast signal broadcast, during use, broadcast television signal treatment system 1 is switched output digital broadcasting-television signal or analog television broadcast signal according to the switching signal of user's input.
Fig. 2 shows the concrete structure of broadcast television signal treatment system 1 among Fig. 1.
The broadcast television signal treatment system 1 that the utility model embodiment provides specifically comprises: the tuner 11 that connects broadcast television signal reception antenna 2 outputs, digital broadcasting-television signal and the analog television broadcast signal that 11 pairs of broadcast television signal reception antennas 2 of tuner receive selected respectively in turn, amplification and Frequency mixing processing, to obtain having the digital broadcasting-television signal or the analog television broadcast signal of fixed intermediate frequency, digital broadcasting-television signal intermediate frequency wherein is 44MHz, and analog television broadcast signal intermediate frequency wherein is 45.75MHz; The central processing unit 12 that connects tuner 11, the digital broadcasting-television signal that obtains after 12 pairs of tuners of central processing unit 11 are handled carries out demodulation in turn, after demultiplexing and the decoding processing, the digital broadcasting-television signal that obtains is modulated to predetermined channel, shows by display unit 3 afterwards; The analog television broadcast signal that the upconverter 13 that connects tuner 11, upconverter 13 obtain after tuner 11 is handled is modulated to predetermined channel, shows by display unit 3 afterwards.Among the utility model embodiment, above-mentioned predetermined channel is specifically as follows CH3 channel or the CH4 channel of NTSC, the video carrier frequency of CH3 channel wherein is 61.25MHz, the video carrier frequency of CH4 channel wherein is 67.25MHz, central processing unit 12 specifically is by being arranged at the GPIO interface on the central processing unit 12, controlling central processing unit 12 digital broadcasting-television signal after the decoding processing is modulated to CH3 or CH4 channel.In addition, central processing unit 12 specifically connects upconverter 13 by an I2C bus, and the analog television broadcast signal that central processing unit 12 obtains after by the total line traffic control upconverter 13 of an I2C tuner 11 being handled is modulated to predetermined channel.
When display unit 3 comprises a display terminal, broadcast television signal treatment system 1 specifically also comprises: signal input part connects central processing unit 12 and upconverter 13, signal output part connects the radio-frequency (RF) switch 14 of display unit 3, central processing unit 12 connects radio-frequency (RF) switch 14 by above-mentioned GPIO interface simultaneously, central processing unit 12 is according to the switching signal of user's input, switch central processing unit 12 by this GPIO interface control radio-frequency (RF) switch 14 and connect display unit 3 or upconverter 13 connection display units 3, to realize switching the purpose that shows digital broadcasting-television signal or analog television broadcast signal by a display terminal.When display unit 3 comprises a plurality of display terminals, when for example comprising two display terminals, these two display terminals can connect central processing unit 12 or upconverter 13 respectively, to export digital broadcasting-television signal and analog television broadcast signal simultaneously.
The broadcast television signal treatment system that the utility model embodiment provides can receive, handle and play digital broadcasting-television signal and/or analog television broadcast signal simultaneously, and the DTA compared to prior art provides has expanded range of application.
In addition, the broadcast television signal treatment system that the utility model embodiment provides also comprises the memory cell 15 that connects central processing unit 12, the digital broadcasting-television signal that memory cell 15 stored broadcast TV signal reception antennas 2 receive and the rendition list of analog television broadcast signal, and with the OSD demonstration of this rendition list by display unit 3 demonstrations; Central processing unit 12 also connects tuner 11 by the 2nd I2C bus.When user's the rendition list that OSD comprised according to display unit 3 demonstrations, when selecting the digital broadcast television program that to watch or analog TV broadcasting program by remote controller or other signal input apparatus, central processing unit 12 is according to user's input, and the digital broadcasting-television signal or the analog television broadcast signal that receive by 11 pairs of tuners 11 of the total line traffic control tuner of the 2nd I2C carry out frequency locking.
Central processing unit and the upconverter of the broadcast television signal treatment system that the utility model embodiment provides by wherein realizes reception, processing and broadcast to digital broadcasting-television signal and/or analog television broadcast signal, DTA compared to prior art provides has expanded range of application; In addition,, the rendition list of analog TV broadcasting is shown on the OSD at digital signal interface, realizes the selection of user the analog TV broadcasting program because analog television broadcast signal can't show OSD.
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 (7)
1. a broadcast television signal treatment system is characterized in that, described system comprises:
The tuner that connects broadcast television signal reception antenna output, described tuner to digital broadcasting-television signal and analog television broadcast signal that described broadcast television signal reception antenna receives select in turn respectively, amplification and Frequency mixing processing, obtain having the digital broadcasting-television signal or the analog television broadcast signal of fixed intermediate frequency;
The central processing unit that connects described tuner, the digital broadcasting-television signal that described central processing unit obtains after described tuner is handled carries out demodulation in turn, demultiplexing and decoding processing after the digital broadcasting-television signal that decoding is obtained is modulated to predetermined channel again, show by display unit;
After the analog television broadcast signal that the upconverter that connects described tuner, described upconverter obtain after described tuner is handled is modulated to predetermined channel, show by described display unit.
2. broadcast television signal treatment system as claimed in claim 1 is characterized in that, described display unit comprises a display terminal, and described system also comprises:
Signal input part connects the radio-frequency (RF) switch that described central processing unit and upconverter, signal output part connect described display terminal, described central processing unit connects described radio-frequency (RF) switch by a GPIO interface that is arranged on the described central processing unit simultaneously, described central processing unit is according to the switching signal of user input, controls described radio-frequency (RF) switch by described GPIO interface and switches that described central processing unit connects described display terminal or described upconverter connects described display terminal.
3. broadcast television signal treatment system as claimed in claim 1, it is characterized in that, described display unit comprises two display terminals, described two display terminals connect described central processing unit and described upconverter respectively, and show the analog television broadcast signal after digital broadcasting-television signal after described central processing unit is handled and described upconverter are handled respectively.
4. broadcast television signal treatment system as claimed in claim 1, it is characterized in that, described central processing unit connects described upconverter by an I2C bus, and the analog television broadcast signal that described central processing unit obtains after by the described upconverter of the total line traffic control of a described I2C described tuner being handled is modulated to predetermined channel.
5. broadcast television signal treatment system as claimed in claim 1, it is characterized in that, described central processing unit connects described tuner by the 2nd I2C bus, and described central processing unit carries out frequency locking by the described tuner of the total line traffic control of described the 2nd I2C to digital broadcasting-television signal or the analog television broadcast signal that described tuner receives.
6. broadcast television signal treatment system as claimed in claim 1 is characterized in that, described system also comprises:
The memory cell that connects described central processing unit, the digital broadcasting-television signal that the described broadcast television signal reception antenna of described cell stores receives and the rendition list of analog television broadcast signal, and with the OSD demonstration of described the rendition list by described display unit demonstration.
7. broadcast television signal playing device, comprise display unit, and the broadcast television signal reception antenna of receiving digital broadcast TV signal and analog television broadcast signal, it is characterized in that, described device also comprises the broadcast television signal treatment system that is connected with described broadcast television signal reception antenna output, and described broadcast television signal treatment system adopts as each described broadcast television signal treatment system of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202608590U CN201571146U (en) | 2009-11-27 | 2009-11-27 | Broadcast/television signal processing system and broadcast/television signal player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202608590U CN201571146U (en) | 2009-11-27 | 2009-11-27 | Broadcast/television signal processing system and broadcast/television signal player |
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| Publication Number | Publication Date |
|---|---|
| CN201571146U true CN201571146U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202608590U Expired - Fee Related CN201571146U (en) | 2009-11-27 | 2009-11-27 | Broadcast/television signal processing system and broadcast/television signal player |
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| CN (1) | CN201571146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186031A (en) * | 2011-05-09 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Digital television signal processing chip system and television |
| 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 |
-
2009
- 2009-11-27 CN CN2009202608590U patent/CN201571146U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186031A (en) * | 2011-05-09 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Digital television signal processing chip system and television |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20151127 |