CN102186039B - Five-in-one tuner for television signals - Google Patents
Five-in-one tuner for television signals Download PDFInfo
- Publication number
- CN102186039B CN102186039B CN 201110115599 CN201110115599A CN102186039B CN 102186039 B CN102186039 B CN 102186039B CN 201110115599 CN201110115599 CN 201110115599 CN 201110115599 A CN201110115599 A CN 201110115599A CN 102186039 B CN102186039 B CN 102186039B
- Authority
- CN
- China
- Prior art keywords
- dvb
- module
- signal
- radio frequency
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a five-in-one tuner for television signals. The five-in-one tuner comprises a radio frequency preprocessing module A, a down-conversion module, a digital video broadcasting-terrestrial/cable (DVB-T/C)/Asia television (ATV) demodulation module, a radio frequency preprocessing module B, a zero intermediate frequency processing module, a DVB-satellite/satellite-second generation (S/S2) demodulation module and a decoding module, wherein the radio frequency preprocessing module A is used for performing filtering and inter-level impedance matching on DVB-T/C and ATV signals; the down-conversion module is used for converting the DVT-T/C and ATV signals into low intermediate frequency signals; the DVT-T/C/ATV demodulation module is used for demodulating the low intermediate frequency signals, and outputting audio and video signals or a serial/parallel data stream; the radio frequency preprocessing module B is used for performing filtering and high frequency amplification on DVB-S/S2 signals; the zero intermediate frequency processing module is used for performing frequency conversion on the DVB-S/S2 signals to obtain I/Q signals; the DVB-S/S2 demodulation module is used for demodulating the I/Q signals; and the decoding module is used for decoding the data stream. The five-in-one tuner can realize the compatible demodulation and decoding output of DVB-T, DVB-C, ATV, DVB-S and DVB-S2 television signals.
Description
Technical field
The present invention relates to a kind of electronic tuning unit, the particularly Low Medium Frequency of a kind of compatible with DVB-T, DVB-C and ATV TV signal output, the while also comprises the five-in-one tuner of DVB-S and the demodulation of DVB-S2 TV signal.
Background technology
The appearance of digital television program makes TV receiving system must possess simultaneously the ability that receives analog signal and multi-standard word signal.And existing TV signal comprises DVB-T, DVB-C, ATV, DVB-S and DVB-S2, wherein, DVB-T is ground digital television signal, DVB-C is digital catv signal, ATV is anolog TV signals, DVB-S is SD digital satellite television signal, and DVB-S2 is the high-definition digital satellite TV signal.The basic receiving function of TV receiving system is to receive anolog TV signals and digital television signal, and the operating frequency that wherein receives DVB-T, DVB-C and ATV is: 45MHz-860MHz, the operating frequency that receives DVB-S and DVB-S2 is 950MHz-2150MHz.The signal of 45MHz-860MHz frequency range is inputted tuner through feeder line, tuner is subjected to host computer control, therefrom select a frequency and carry out frequency conversion and filtering processing, output Low Medium Frequency signal, be responsible for DVB-T, DVB-C and ATV are carried out demodulation, decoding by the master chip on the master controller, export at last audio/video signal.The digital television signal of 950MHz-2150MHz frequency range is inputted tuner through feeder line, and tuner is subjected to host computer control, therefrom selects a frequency and carries out frequency conversion and demodulation process, and output TS flows to mainboard and decodes, and finally exports audio/video signal.
In the prior art, the radio frequency part that the Digital TV Receiving of 45MHz-860MHz section and simulated television receive, because index is difficult to take into account DVB-T, DVB-C and ATV, normally process respectively with two tuners, need two intermediate frequency filtering modules, simultaneously, original tuner circuit is complicated, debug difficulties, volume is larger; The digital television signal of 950MHz-2150MHz section also needs the another tuner to process.This has increased the design difficulty of whole set of television and has been difficult to carry out lightening design.
Summary of the invention
The invention provides a kind of Low Medium Frequency output that can realize compatible with DVB-T, DVB-C and ATV TV signal, also comprise the five-in-one tuner of DVB-S and the demodulation of DVB-S2 TV signal simultaneously.
The present invention realizes that the technical solution of above-mentioned purpose is: a kind of five-in-one tuner for TV signal is characterized in that comprising: radio frequency pretreatment module A is used for DVB-T/C and ATV signal are carried out filtering and inter-stage impedance matching; Down conversion module is used for DVB-T/C and ATV signal are converted to the Low Medium Frequency signal that is applicable to the DVB-T/C/ATV demodulation module; The DVB-T/C/ATV demodulation module is used for demodulation Low Medium Frequency signal and exports video/audio signal or serial/parallel row data flow; Radio frequency pretreatment module B is used for the DVB-S/S2 signal is carried out filtering, High frequency amplification; The zero intermediate frequency processing module, being used for the DVB-S/S2 signal frequency conversion is i/q signal; The DVB-S/S2 demodulation module is used for the demodulation i/q signal; Decoder module is used for decoded data stream;
Wherein, described radio frequency pretreatment module A, down-converted module, DVB-T/C/ATV demodulation module, decoder module connect successively, receive DVB-T/C and ATV signal by radio frequency pretreatment module A, then through video/audio signal or the serial/parallel row data flow of down-converted module converts output Low Medium Frequency signal output ATV to the DVB-T/C/ATV demodulation module, through decoder module serial/parallel row data flow decoding is processed into again the video/audio signal output of DVB-T/C; Described radio frequency processing module B, zero intermediate frequency processing module, DVB-S/S2 module, decoder module connect successively, receive the DVB-S/S2 signal by radio frequency pretreatment module B, then to the DVB-S/S2 demodulation module, export parallel data stream through zero intermediate frequency module frequency conversion output i/q signal, through decoder module the parallel data stream decoding is processed into again the video/audio signal output of DVB-S/S2.
Described down-converted module comprises the first radio frequency amplifier, the first frequency mixer, mixer amplifier, channel filter, the Low Medium Frequency amplifier, the output of described radio frequency pretreatment module A is connected with the input of the first radio frequency amplifier, the output of described Low Medium Frequency amplifier is connected with the respective input of DVB-T/C/ATV demodulation module, described the first frequency mixer, mixer amplifier, channel filter is connected in turn between the first radio frequency amplifier and the Low Medium Frequency amplifier, and the local oscillator port of described the first frequency mixer is connected with the crystal clock output of down-converted module.Described radio frequency amplifier is provided with the rf gain control end for the Gain Automatic regulating and controlling of RF, and described rf gain control end is connected with the input of the first radio frequency amplifier; Described Low Medium Frequency amplifier is provided with the Low Medium Frequency gain control input for the control of Low Medium Frequency automatic gain, described DVB-T/C/ATV demodulation module is provided with Low Medium Frequency automatic gain control output end, and described Low Medium Frequency automatic gain control output end is connected with the Low Medium Frequency gain control input.
Described zero intermediate frequency processing module comprises the second radio frequency amplifier, the second frequency mixer, filter, amplifier, two-divider, described the second frequency mixer, filter, amplifier connects and composes the mixing and filtering amplifying circuit successively, the input of described two-divider is connected with the crystal clock output of zero intermediate frequency processing module, the output of described two-divider is connected with the local oscillator port of the second frequency mixer, the input of described the second radio frequency amplifier is connected with the output of radio frequency pretreatment module B, and the output of described radio frequency amplifier is respectively through exporting respectively I signal and Q signal to the respective input of DVB-S/S2 demodulation module behind the two-way mixing and filtering amplifying circuit.Described the second radio frequency amplifier is provided with automatic gain control inputs port, and described DVB-S/S2 demodulation module is provided with automatic gain control output end mouth, and described automatic gain control inputs port is connected with automatic gain control output end mouth.
Described lower frequency processing module adopts the R810 cake core.Described zero intermediate frequency processing module adopts the AV2026 cake core.Described DVB-S/S2 demodulation module adopts the AVL6211 cake core.
The present invention also can do following improvement:
Described zero intermediate frequency processing module adopts the AV2026 cake core, and described DVB-S/S2 demodulation module adopts the AVL6211 cake core, and the crystal clock output of described AV2026 cake core is connected the crystal sharing clock signal with the crystal clock input of AVL6211 cake core.
Compared with prior art, the present invention has following advantage:
(1) the present invention has realized that DVB-S/S2/T/C and ATV are compatible under the prerequisite of the superperformance that has guaranteed reception DVB-T/C and ATV and reception DVB-S/S2 superperformance.
(2) the electric circuit constitute of the present invention is simple in structure, and debugging is simple, and compact conformation, volume are little, are conducive to the lightening design of complete machine.
(3) the present invention realizes the output of Low Medium Frequency signal, compares with two intermediate frequency filtering modules are arranged in the anolog TV signals receiving circuit in the prior art, has simplified the back-end circuit structure, so that the design of main frame and production are more simple and convenient.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the composition frame chart of the specific embodiment of the invention.
Fig. 2 is the electric circuit constitute schematic diagram of the specific embodiment of the invention.
Embodiment
As shown in Figure 1, a kind of five-in-one tuner for TV signal comprises radio frequency pretreatment module A, is used for DVB-T/C and ATV signal are carried out filtering and inter-stage impedance matching; Down conversion module is used for DVB-T/C and ATV signal are converted to the Low Medium Frequency signal that is applicable to the DVB-T/C/ATV demodulation module; The DVB-T/C/ATV demodulation module is used for demodulation Low Medium Frequency signal and exports video/audio signal or serial/parallel row data flow; Radio frequency pretreatment module B is used for the DVB-S/S2 signal is carried out filtering, High frequency amplification; The zero intermediate frequency processing module, being used for the DVB-S/S2 signal frequency conversion is i/q signal; The DVB-S/S2 demodulation module is used for the demodulation i/q signal; Decoder module is used for decoded data stream;
Wherein, radio frequency pretreatment module A, down-converted module, DVB-T/C/ATV demodulation module, decoder module connect successively, receive DVB-T/C and ATV signal by radio frequency pretreatment module A, then through video/audio signal or the serial/parallel row data flow of down-converted module converts output Low Medium Frequency signal output ATV to the DVB-T/C/ATV demodulation module, through decoder module serial/parallel row data flow decoding is processed into again the video/audio signal output of DVB-T/C; Radio frequency processing module B, zero intermediate frequency processing module, DVB-S/S2 module, decoder module connect successively, receive the DVB-S/S2 signal by radio frequency pretreatment module B, then to the DVB-S/S2 demodulation module, export parallel data stream through zero intermediate frequency module frequency conversion output i/q signal, through decoder module the parallel data stream decoding is processed into again the video/audio signal output of DVB-S/S2.The master controller of rear class has comprised DVB-T/C/ATV demodulation module and decoder module.
As shown in Figure 2, the down-converted module comprises the first radio frequency amplifier, the first frequency mixer, mixer amplifier, channel filter, Low Medium Frequency amplifier, the output of described radio frequency pretreatment module A is connected with the input of the first radio frequency amplifier, the output of Low Medium Frequency amplifier is connected with the respective input of DVB-T/C/ATV demodulation module, the first frequency mixer, mixer amplifier, channel filter are connected in turn between the first radio frequency amplifier and the Low Medium Frequency amplifier, and the local oscillator port of the first frequency mixer is connected with the crystal clock output of down-converted module.Radio frequency amplifier is provided with the rf gain control end for the Gain Automatic regulating and controlling of RF, and the rf gain control end is connected with the input of the first radio frequency amplifier; The Low Medium Frequency amplifier is provided with the Low Medium Frequency gain control input for the control of Low Medium Frequency automatic gain, the DVB-T/C/ATV demodulation module is provided with Low Medium Frequency automatic gain control output end, and the Low Medium Frequency automatic gain control output end of DVB-T/C/ATV demodulation module is connected with the Low Medium Frequency gain control input of the demodulation module of Low Medium Frequency amplifier.
The zero intermediate frequency processing module comprises the second radio frequency amplifier, the second frequency mixer, filter, amplifier, two-divider, described the second frequency mixer, filter, amplifier connects and composes the mixing and filtering amplifying circuit successively, the input of described two-divider is connected with the crystal clock output of zero intermediate frequency processing module, the output of described two-divider is connected with the local oscillator port of the second frequency mixer, the input of described the second radio frequency amplifier is connected with the output of radio frequency pretreatment module B, the output of described radio frequency amplifier is respectively through exporting respectively I signal and Q signal to the respective input of DVB-S/S2 demodulation module behind the two-way mixing and filtering amplifying circuit, the second radio frequency amplifier is provided with automatic gain control inputs port, the DVB-S/S2 demodulation module is provided with automatic gain control output end mouth,, the automatic gain control inputs port of the second radio frequency amplifier is connected with the automatic gain control output end mouth of DVB-S/S2 demodulation module.
During work, the DVB-T signal, DVB-C signal and ATV signal pass through radio frequency pretreatment module A again from the rf inputs A port input of this tuner, will carry out the impedance matching of filtering and inter-stage first, then are connected to the down-converted module.The down-converted module adopts integrated level high, the R810 cake core that performance is good.This module has comprised rf gain control end, Low Medium Frequency gain control input, Low Medium Frequency signal output part, Low Medium Frequency amplification module, serial clock input, serial data input.In this module, radiofrequency signal is carried out first radio frequency and is amplified, wherein this module can realize the Gain Automatic regulating and controlling of RF, after amplifying, radio frequency carries out smear, smear amplification and channel filter, output Low Medium Frequency signal, again the Low Medium Frequency signal is amplified, realize Low Medium Frequency output, be connected to DVB-T/C and ATV demodulation module that master controller includes.Interface between the DVB-T/C that master controller includes and ATV demodulation module and the master controller comprises serial/parallel row data flow, data flow clock, synchronizing signal and miscue signal and I
2C bus and reset terminal.Wherein the gain control end mouth of the automatic gain control port of DVB-T/C and ATV demodulation module and R810 cake core is connected, and forms feedback network, realizes automatic gain control.Follow DVB-T/C and the ATV demodulation module that main master controller includes the Low Medium Frequency signal is demodulated into data flow output, be connected to decoder module and decode, process again last output audio and video through Voice ﹠ Video.
The DVB-S/S2 signal is from the rf inputs B port input of this tuner, through radio frequency pretreatment module B, this module is carried out effectively filtering and amplification to the DVB-S/S2 signal, at first radiofrequency signal is through inductance, the filter circuit that electric capacity and resistance form, through the low noise triode DVB-S/S2 signal is amplified, the radiofrequency signal of output is connected to the zero intermediate frequency processing module after amplifying again.The zero intermediate frequency processing module has adopted integrated level high, the zero intermediate frequency AV2026 cake core that performance is good, this module have comprised rf gain control input end, zero intermediate frequency gain control input, zero intermediate frequency signals output, zero intermediate frequency amplification module, serial clock input, serial data input.In the zero intermediate frequency processing module, radiofrequency signal is again carried out radio frequency and is amplified, and through mixing, filtering and amplification, output can be exchanged into the available i/q signal of DVB-S/S2 demodulation module, is input to the DVB-S/S2 demodulation module again.The DVB-S/S2 demodulation module adopts integrated level high, the AVL6211 cake core that performance is good.Interface between DVB-S/S2 demodulation module and the master controller comprises serial/parallel row data flow, data flow clock, synchronizing signal and miscue signal and I
2C bus and reset terminal.Wherein the crystal operating frequency of demodulation AVL6211 cake core can be identical with the crystal operating frequency of zero intermediate frequency AV2026 cake core, the crystal clock output of AV2026 cake core is connected shared 27MHz crystal clock signal with the crystal clock input of AVL6211 cake core, saved cloth board space and Decrease production cost.The automatic gain control port of demodulation AVL6211 cake core is connected with zero intermediate frequency AV2026 cake core gain control end mouth, forms feedback network, realizes automatic gain control.The AVL6211 cake core can be demodulated into available i/q signal data flow output, and then data flow output is connected to decoder module and decodes, and through master controller Voice ﹠ Video is processed again, is connected at last the Voice ﹠ Video output port.Master controller can pass through I
2The total line traffic control demodulation module of C, and by the I of demodulation module
2C bus and zero intermediate frequency processing module need to select the frequency of demodulation from radiofrequency signal, reach the effect of arbitrarily watching different frequency.
DVB-S/S2, the receiving of DVB-T/C and ATV pass through I by the rear class master controller
2The total line traffic control of C, its process is as follows: behind master controller and this tuner electrification reset, send control command by man-machine interface to main control computer by the people of TV reception, select corresponding program receiving source, do corresponding program searching.Detailed process is as follows:
When the ATV program was seen in reception, anolog TV signals were received input A port, after master controller is received operational order, pass through I
2C sends dependent instruction to DVB-T/C and ATV demodulation module, and then the DVB-T/C/ATV demodulation module passes through I
2The C bus is sent control command to down conversion module, starts down conversion module, closes simultaneously the DVB-S/S2 module.Need to select the channel of demodulation from signal source, instruction arranges channel filter in the down conversion module by serial clock terminal SCL and serial data end SDA, down conversion module can be regulated intermediate-frequency gain automatically, the output zero intermediate frequency signals is to DVB-T/C and ATV demodulation module, the DVB-T/C that master controller includes and ATV demodulation module are demodulated into sound accompaniment and vision signal output to the Low Medium Frequency signal, be connected to the Voice ﹠ Video output port of master controller, just the available television machine comes the paid analog television program of watching.
When the DVB-C TV programme is seen in reception or during the DVB-T TV programme, DVB-C signal or DVB-T signal are received input A port, after master controller is received operational order, pass through I
2C sends dependent instruction to DVB-T/C and ATV demodulation module, and then demodulation module passes through I
2The C bus is sent control command to down conversion module, starts down conversion module, closes simultaneously the DVB-S/S2 module.Need to select the channel of demodulation from signal source, instruction arranges channel filter in the down conversion module by serial clock terminal SCL and serial data end SDA, down conversion module and DVB-T/C and ATV demodulation module can realize automatically regulating Low Medium Frequency gain control, output Low Medium Frequency signal is to DVB-T/C and ATV demodulation module, the DVB-T/C that master controller includes and ATV demodulation module are demodulated into data flow output to the Low Medium Frequency signal, being connected to DVB-T/C and the ATV demodulation module decoder module that master controller includes decodes, output is connected to the Voice ﹠ Video output port of master controller, and just the available television machine comes paid DVB-C TV programme or the DVB-T TV programme of watching.
When the DVB-S/S2 program was seen in reception, the DVB-S/S2 signal was received input B port, after master controller is received operational order, passes through I
2C sends dependent instruction to the DVB-S/S2 demodulation module, and then demodulation module passes through I
2The C bus is sent control command to the zero intermediate frequency module, starts the zero intermediate frequency module, closes simultaneously DVB-T/C and ATV module that master controller includes.Need to select the frequency of demodulation from signal source, instruction arranges in the zero intermediate frequency module corresponding frequency by serial clock terminal SCL and serial data end SDA and carries out mixing, zero intermediate frequency module and DVB-S/S2 demodulation module can realize automatically regulating zero intermediate frequency gain control, export available i/q signal to the DVB-S/S2 demodulation module, the DVB-S/S2 demodulation module is demodulated into data flow output to available i/q signal, the decoder module that is connected to master controller is decoded, output is connected to the Voice ﹠ Video output port of master controller, and just the available television machine comes the paid DVB-S/S2 TV programme of watching.
Embodiments of the present invention are not limited to this; under the above-mentioned basic fundamental thought of the present invention prerequisite;, all drop within the rights protection scope of the present invention modification, replacement or the change of other various ways that content of the present invention is made according to the ordinary skill knowledge of this area and customary means.
Claims (9)
1. five-in-one tuner that is used for TV signal is characterized in that comprising:
Radio frequency pretreatment module A is used for DVB-T/C and ATV signal are carried out filtering and inter-stage impedance matching;
The down-converted module is used for DVB-T/C and ATV signal are converted to the Low Medium Frequency signal that is applicable to the DVB-T/C/ATV demodulation module;
The DVB-T/C/ATV demodulation module is used for demodulation Low Medium Frequency signal and exports video/audio signal or serial/parallel row data flow; Described DVB-T/C/ATV demodulation module is provided with Low Medium Frequency automatic gain control output end;
Radio frequency pretreatment module B is used for the DVB-S/S2 signal is carried out filtering, High frequency amplification;
The zero intermediate frequency processing module, being used for the DVB-S/S2 signal frequency conversion is i/q signal;
The DVB-S/S2 demodulation module is used for the demodulation i/q signal;
Decoder module is used for decoded data stream;
Wherein, described radio frequency pretreatment module A, down-converted module, DVB-T/C/ATV demodulation module, decoder module connect successively, receive DVB-T/C and ATV signal by radio frequency pretreatment module A, then through video/audio signal or the serial/parallel row data flow of down-converted module converts output Low Medium Frequency signal output ATV to the DVB-T/C/ATV demodulation module, through decoder module serial/parallel row data flow decoding is processed into again the video/audio signal output of DVB-T/C; Described radio frequency processing module B, zero intermediate frequency processing module, DVB-S/S2 demodulation module, decoder module connect successively, receive the DVB-S/S2 signal by radio frequency pretreatment module B, then to the DVB-S/S2 demodulation module, export parallel data stream through zero intermediate frequency processing module frequency conversion output i/q signal, through decoder module the parallel data stream decoding is processed into again the video/audio signal output of DVB-S/S2.
2. the five-in-one tuner for TV signal according to claim 1, it is characterized in that: described down-converted module comprises the first radio frequency amplifier, the first frequency mixer, mixer amplifier, channel filter, the Low Medium Frequency amplifier, the output of described radio frequency pretreatment module A is connected with the input of the first radio frequency amplifier, the output of described Low Medium Frequency amplifier is connected with the respective input of DVB-T/C/ATV demodulation module, described the first frequency mixer, mixer amplifier, channel filter is connected in turn between the first radio frequency amplifier and the Low Medium Frequency amplifier, and the local oscillator port of described the first frequency mixer is connected with the crystal clock output of down-converted module.
3. the five-in-one tuner for TV signal according to claim 2, it is characterized in that: described the first radio frequency amplifier is provided with the rf gain control end for the Gain Automatic regulating and controlling of RF, and described rf gain control end is connected with the input of the first radio frequency amplifier.
4. the five-in-one tuner for TV signal according to claim 1, it is characterized in that: described zero intermediate frequency processing module comprises the second radio frequency amplifier, the second frequency mixer, filter, amplifier, two-divider, described the second frequency mixer, filter, amplifier connects and composes the mixing and filtering amplifying circuit successively, the input of described two-divider is connected with the crystal clock output of zero intermediate frequency processing module, the output of described two-divider is connected with the local oscillator port of the second frequency mixer, the input of described the second radio frequency amplifier is connected with the output of radio frequency pretreatment module B, and the output of described radio frequency amplifier is respectively through exporting respectively I signal and Q signal to the respective input of DVB-S/S2 demodulation module behind the two-way mixing and filtering amplifying circuit.
5. the five-in-one tuner for TV signal according to claim 4, it is characterized in that: described the second radio frequency amplifier is provided with automatic gain control inputs port, described DVB-S/S2 demodulation module is provided with automatic gain control output end mouth, and described automatic gain control inputs port is connected with automatic gain control output end mouth.
6. the five-in-one tuner for TV signal according to claim 1 is characterized in that: described down-converted module employing R810 cake core.
7. the five-in-one tuner for TV signal according to claim 1 is characterized in that: described zero intermediate frequency processing module employing AV2026 cake core.
8. the five-in-one tuner for TV signal according to claim 1 is characterized in that: described DVB-S/S2 demodulation module employing AVL6211 cake core.
9. the five-in-one tuner for TV signal according to claim 1, it is characterized in that: described zero intermediate frequency processing module adopts the AV2026 cake core, described DVB-S/S2 demodulation module adopts the AVL6211 cake core, and the crystal clock output of described AV2026 cake core is connected the crystal sharing clock signal with the crystal clock input of AVL6211 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110115599 CN102186039B (en) | 2011-05-05 | 2011-05-05 | Five-in-one tuner for television signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110115599 CN102186039B (en) | 2011-05-05 | 2011-05-05 | Five-in-one tuner for television signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102186039A CN102186039A (en) | 2011-09-14 |
| CN102186039B true CN102186039B (en) | 2013-02-06 |
Family
ID=44572100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110115599 Active CN102186039B (en) | 2011-05-05 | 2011-05-05 | Five-in-one tuner for television signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102186039B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767703B (en) * | 2019-11-01 | 2022-08-02 | 杭州海康威视数字技术股份有限公司 | Recognition equipment of electronic license plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0569394A1 (en) * | 1991-01-31 | 1993-11-18 | Thomson Brandt Gmbh | Broadcast receiver with a nicam or dab decoder. |
| CN201282520Y (en) * | 2008-09-28 | 2009-07-29 | 广州易迩达电子有限公司 | Tuner for digital satellite television set-top box |
| CN101621647A (en) * | 2009-07-17 | 2010-01-06 | 广州易迩达电子有限公司 | Three-in-one tuner with compatibility of DVB-T/C and ATV |
| CN202043220U (en) * | 2011-05-05 | 2011-11-16 | 广州易迩达电子有限公司 | Five-in-one tuner for television signals |
-
2011
- 2011-05-05 CN CN 201110115599 patent/CN102186039B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0569394A1 (en) * | 1991-01-31 | 1993-11-18 | Thomson Brandt Gmbh | Broadcast receiver with a nicam or dab decoder. |
| CN201282520Y (en) * | 2008-09-28 | 2009-07-29 | 广州易迩达电子有限公司 | Tuner for digital satellite television set-top box |
| CN101621647A (en) * | 2009-07-17 | 2010-01-06 | 广州易迩达电子有限公司 | Three-in-one tuner with compatibility of DVB-T/C and ATV |
| CN202043220U (en) * | 2011-05-05 | 2011-11-16 | 广州易迩达电子有限公司 | Five-in-one tuner for television signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102186039A (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103686011A (en) | Television signal receiving module and method | |
| CN102186039B (en) | Five-in-one tuner for television signals | |
| CN202617261U (en) | Three-terminal input tuner compatible with terrestrial digital television standard, cable digital television standard and satellite digital television standard | |
| CN202043220U (en) | Five-in-one tuner for television signals | |
| CN201282520Y (en) | Tuner for digital satellite television set-top box | |
| CN204598153U (en) | A kind of TV motherboard | |
| CN100473125C (en) | TV set for receiving digital signals and analog signals | |
| CN204206374U (en) | A kind of simple two-way signal receives descrambling kilocalorie receiver | |
| CN201854360U (en) | Digital television receiving device | |
| CN2865162Y (en) | TV/video collection card for PCMCIA interface | |
| CN201450547U (en) | Digital television receiving device | |
| CN201957185U (en) | Television integrated machine with Cable Modem function | |
| CN102625174B (en) | A kind of method and Set Top Box processing digital-to-analogue mixed signal | |
| CN203377988U (en) | Full-function HDMI Dangle | |
| CN204377023U (en) | There is the ground of USB interface, cable digital TV tuner | |
| CN203691561U (en) | Single-input three-way-output high definition digital satellite television tuner | |
| CN207382476U (en) | One kind supports cable TV signal and ISDB-T dual mode systems based on set-top box | |
| CN101621647B (en) | Three-in-one tuner with compatibility of DVB-T/C and ATV | |
| CN201986091U (en) | Wireless digital television signal receiving device | |
| CN201518515U (en) | DVB-T/C and ATV compatible three-in-one tuner | |
| CN202127420U (en) | Double demodulation circuit and set-top box with same | |
| CN202475623U (en) | Ultraminiature satellite television tuner for digital/analog all-in-one machine | |
| CN204538242U (en) | A kind of digital terminal antenna box supporting multiple stage satellite television | |
| CN103731713A (en) | Television signal receiving system and method | |
| CN201298886Y (en) | Tuner of digital cable TV set-top box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 511455 Guangdong city of Guangzhou province Nansha District Huangge Town Ji Sheng Lu No. 2 (plant A) Patentee after: Guangzhou Yi Da Polytron Technologies Inc Address before: Haosheng Industrial Park, No. 8 East 511442 in Guangdong Province, Guangzhou City Southern towns Panyu District Dengyun Road 2 501 Patentee before: Guangzhou Earda Electronic Co., Ltd. |