CN1909647A - TV signal receiving module - Google Patents
TV signal receiving module Download PDFInfo
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- CN1909647A CN1909647A CN 200510084587 CN200510084587A CN1909647A CN 1909647 A CN1909647 A CN 1909647A CN 200510084587 CN200510084587 CN 200510084587 CN 200510084587 A CN200510084587 A CN 200510084587A CN 1909647 A CN1909647 A CN 1909647A
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Abstract
The invention relates to a TV signal receiving module, which comprises the first plug, a network interface module, a switch, a decoder, the second plug and a wire TV decoder module, wherein the first plug and the second plug can be plug the network interface module and wire TV decoder on them via different TV signals, to receive different TV signal standards, to upgrade the TV and improve the application.
Description
Technical field
The present invention is about a kind of TV, especially about a kind of television signal (signal) receiver module.
Background technology
The television equipment 10 of existing first order standard, see also Fig. 1, utilize antenna or cable (cable) 11 that radio frequency (Radio Frequency) is sent to signal receiving module 12, by NTSC/ATSC Network Interface Module (the Network InterfaceModule in the signal receiving module 12, NIM) the NTSC analog signal of 121 reception terrestrial broadcastings and cable TV (Cable), ATSC DTB Digital Terrestrial Broadcasting signal, wherein Network Interface Module 121 comprises tuner and demodulator (not icon), tuner by Network Interface Module 121 converts radio-frequency (RF) signal to intermediate frequency signal, utilizing demodulator to separate modulation again handles, intermediate frequency signal is converted to fundamental frequency (Base Band) signal, comprise sound and image signal in its baseband signal, baseband signal being sent to decoder 122 decompresses and deciphers processing again, decoder 122 comprises MPEG-2 decoder 1221 and image decoding device 1222, then the baseband signal of sound and image (for example: liquid crystal indicator is sent to display unit 13 respectively, electricity plasma display device or liquid crystal projection apparatus) and loud speaker 14, and between Network Interface Module 121 and decoder 122, be provided with the operation of CPU (CPU) 123 with the control said modules.
See also Fig. 2, television equipment 20 for existing second level standard, utilize signal receiving module 22 interior NTSC/ATSC/QAM Network Interface Modules 221 to receive the NTSC analog signal of terrestrial broadcastings and cable TV (Cable), ATSC DTB Digital Terrestrial Broadcasting signal and unencrypted digital cable TV (digital cable/QAM) signal, by Network Interface Module 221 radio-frequency (RF) signal is carried out frequency reducing and separated the modulation processing, again baseband signal is sent to decoder 222, utilize decoder 222 that baseband signal is decompressed and decipher processing, baseband signal with image and sound is sent to display unit 23 and loud speaker 24 again, and utilizes the operation of CPU 223 Control Network interface modules 221 and decoder 222.
See also Fig. 3, television equipment 30 for third level standard, utilize set NTSC/ATSC/QAM/OOB (out of band) Network Interface Module 321 in the signal receiving module 32, receive the NTSC analog signal of terrestrial broadcasting and cable TV (Cable), ATSC DTB Digital Terrestrial Broadcasting signal, encrypt and unencrypted digital cable TV (digital cable/QAM) signal, and management information (management message), this management information is present in the OOB signal, mainly utilize Network Interface Module 321 that radio-frequency (RF) signal is carried out frequency reducing, demodulation also is converted to baseband signal, and above-mentioned signal is decrypted processing by cable TV decipher 322, signal is sent to decoder 323 to decompress and deciphers, baseband signal with its image and sound is sent to display unit 33 and loud speaker 34 respectively again, and utilizes the operation of CPU 324 Control Network interface modules 321 and decoder 322.
Yet the Network Interface Module and the cable TV decipher that are provided with in the existing TV all are fixed on the circuit board of signal receiving module, and can only receive the television signal of single specific criteria, digitlization along with television signal, when the user will upgrade when receiving the television signal of various criterion, can only change whole television equipment, perhaps buy the video signal boxcar in addition, not only limit the use elasticity of television equipment, and increase its complexity.Therefore how to improve the use elasticity of television equipment, become the direction that industry is made great efforts research and development.
Summary of the invention
One object of the present invention is to provide a kind of TV signal receiving module, by the slot of pluggable Network Interface Module and cable TV decipher is set, change the Network Interface Module and the cable TV decipher that are provided with thereon, to receive different television signal standards, reach the TV of upgrading easily, and improve the use elasticity of television equipment.
The present invention is a kind of TV signal receiving module, mainly comprise first slot, Network Interface Module, switch, decoder, second slot and cable TV decipher module, wherein first slot and second slot can plug according to different television signals and change Network Interface Module and the cable TV decipher that is provided with thereon, thereby receive different television signal standards, reach the TV of upgrading easily, and improve the use elasticity of television equipment.
Description of drawings
Fig. 1 is for showing the schematic diagram of existing television equipment.
Fig. 2 is for showing the schematic diagram of existing television equipment.
Fig. 3 is for showing the schematic diagram of existing television equipment.
Fig. 4 is for showing the schematic diagram of television equipment of the present invention.
Fig. 5 is the schematic diagram of another embodiment of demonstration television equipment of the present invention.
Detailed Description Of The Invention
Relevant the present invention is for reaching above-mentioned purpose, and technological means that is adopted and effect thereof are lifted preferred embodiment now, and cooperates icon to be illustrated.
See also Fig. 4, television equipment 40 of the present invention mainly comprises antenna or cable 41, TV signal receiving module 42, display unit 43 and loud speaker 44; Wherein TV signal receiving module 42 is connected with antenna or cable 41, and TV signal receiving module 42 comprises Network Interface Module 421, the first slot 421a, switch 422, decoder 423, CPU 424, cable TV decipher module 425 and the second slot 425a; Wherein Network Interface Module 421 comprises tuner and demodulator (not icon), and decoder 423 comprises MPEG-2 decoder 4231 and image decoding device 4232; Network Interface Module 421 is arranged on the first slot 421a, the various standard television signals that provide in order to reception antenna or cable 41, for example: the NTSC analog signal of terrestrial broadcasting and cable TV, ATSC DTB Digital Terrestrial Broadcasting signal, cable TV signal, encryption and unencrypted digital cable TV signal and management information or the like; Switch 422 is connected with Network Interface Module 421; CPU 424 is connected with assemblies such as Network Interface Module 421, switch 422 and decoders 423, in order to the operation of control said modules; And utilize the second slot 425a that cable TV decipher module 425 is set; The present invention utilizes the tuner of Network Interface Module 421 to convert intermediate frequency signal to from the radio-frequency (RF) signal that antenna 41 receives, again via the demodulator of Network Interface Module 421 to separate modulation, intermediate frequency signal is converted comprise to the baseband signal of image and sound, CPU 424 is again according to the position of the pattern diverter switch 422 of the television signal that is received from antenna 41, thereby change the signal transfer path, so that television signal directly is sent to decoder 423, or via being resent to decoder 423 after the cable TV decipher module 425, the baseband signal that will comprise image and sound again exports display unit 43 and loud speaker 44 respectively to, and above-mentioned CPU 424 also can be integrated into one with decoder 423.
The television signal that transmits when antenna or cable 41 is the television standard of the first order, that is when the NTSC analog signal of terrestrial broadcasting and cable TV (Cable), ATSC DTB Digital Terrestrial Broadcasting signal, promptly on the first slot 421a, NTSC/ATSC Network Interface Module 421 is set, owing to do not comprise the signal of encryption in the television signal, therefore the second slot 425a then need not be provided with cable TV decipher module 425; Television signal by antenna or cable 41 transmission, mainly utilize the tuner in the NTSC/ATSC Network Interface Module 421 that the rf tv signal is converted to intermediate frequency signal, demodulator through Network Interface Module 421 makes intermediate frequency signal convert the baseband signal that generation comprises sound and image to again, make baseband signal directly be sent to decoder 423 by CPU 424 diverter switches 422, after utilizing decoder 423 that image and sound signal are decompressed and deciphering, be sent to corresponding display unit 43 and loud speaker 44 outputs respectively.
Television signal when antenna or cable transmission second level standard, that is the NTSC analog signal of terrestrial broadcasting and cable TV (Cable), during ATSC DTB Digital Terrestrial Broadcasting signal and unencrypted digital cable TV (digital cable/QAM) signal, the first slot 421a is provided with the Network Interface Module 421 of NTSC/ATSC/QAM, because television signal does not comprise the signal of encryption, therefore on the second slot 425a cable TV decipher module 425 need be set then, tuner and demodulator by Network Interface Module 421 deciphering will carry out frequency reducing from the rf tv signal that antenna 41 receives and separate modulation, the baseband signal that comprises image and sound with generation, CPU 424 diverter switches 422, make baseband signal directly be sent to decoder 424 and decompress and decipher, be resent to display unit 43 and loud speaker 44 outputs.
And the television signal standard of working as antenna or cable 41 transmission is a third level television standard, that is the NTSC analog signal of terrestrial broadcasting and cable TV (Cable), ATSC DTB Digital Terrestrial Broadcasting signal, encrypt and unencrypted digital cable TV (digital cable/QAM) signal, and during management information (management message), at the first slot 421a NTSC/ATSC/QAM/OOB Network Interface Module 421 is set, and second slot 425a be provided with line TV decipher module 425, be connected with cable TV decipher 424 by CPU 424 diverter switches 422; Television signal is sent to NTSC/ATSC/QAM Network Interface Module 421 through antenna or cable 41, tuner and demodulator by NTSC/ATSC/QAM Network Interface Module 421 carry out the rf tv signal frequency reducing and separate the modulation processing, when being input as the digital cable TV signal of encryption, by CPU 424 control cable TV decipher modules 425 baseband signal that demodulation produces is decrypted processing, baseband signal is decompressed and decipher through decoder 423 again, be sent to display unit 43 and loud speaker 44 then; When importing the signal of unencrypted ATSC/Cable (QAM), CPU 424 diverter switches 422, make the baseband signal of carrying out frequency reducing and demodulation by NTSC/ATSC/QAM/OOB Network Interface Module 421, directly be sent to through decoder 423 and decompress and decipher, be resent to display unit 43 and loud speaker 44 outputs.
The present invention can change with the television signal transmission standard, or according to user's demand, on the first slot 421a, suitable Network Interface Module is set, and according to the cable TV signal that whether comprises encryption in the television signal, can be chosen in the second slot 425a and be provided with line TV decipher module, thereby receive different television signal standards, reach the TV of upgrading easily, and improve the use elasticity of television equipment.
See also Fig. 5, be another embodiment of the present invention, be with the difference of the foregoing description: cable TV decipher module 525 is directly fixed in the TV signal receiving module 52; The present invention utilizes the tuner of Network Interface Module 521 and demodulator that the rf tv signal is carried out frequency reducing and demodulation process, and Network Interface Module 521 diverter switches 522 that CPU 524 foundations are selected are to change the signal transfer path, so that baseband signal directly is sent to decoder 523, or, export sound and image to display unit 53 and loud speaker 54 respectively via being resent to decoder 523 after the cable TV decipher module 525.
The above person only is that scope of the present invention is not limited to these preferred embodiments, and is all according to any change that the present invention did, and not breaking away under the spirit of the present invention, all belongs to the scope of the present patent application patent in order to convenient explanation the preferred embodiments of the present invention.
Claims (17)
1. TV signal receiving module comprises:
First slot in order to pluggable Network Interface Module to be set, utilizes described Network Interface Module to receive television signal;
Switch is connected to described Network Interface Module, to change the path that described television signal transmits;
Decoder is connected to described switch, described television signal is decompressed and decipher; And
Second slot can plug cable TV decipher module is set, and described second slot is connected with decoder and described switch respectively;
Wherein said Network Interface Module carries out the frequency reducing demodulation with described television signal, after the frequency reducing demodulation process, switches described switch again and is connected to described decoder or described cable TV decipher, so that described television signal is deciphered or decryption processing.
2. TV signal receiving module according to claim 1, wherein said Network Interface Module can be changed according to television signal.
3. TV signal receiving module according to claim 1 wherein when described television signal is NTSC analog signal, the ATSC DTB Digital Terrestrial Broadcasting signal of terrestrial broadcasting and cable TV, is provided with the NTSC/ATSC Network Interface Module at described first slot.
4. TV signal receiving module according to claim 1, wherein when described television signal is the NTSC analog signal, ATSC DTB Digital Terrestrial Broadcasting signal of terrestrial broadcasting and cable TV and unencrypted digital cable TV signal, the NTSC/ATSC/QAM Network Interface Module is set at described first slot.
5. TV signal receiving module according to claim 1, wherein when described television signal is the NTSC analog signal, ATSC DTB Digital Terrestrial Broadcasting signal, encryption of terrestrial broadcasting and cable TV and unencrypted digital cable TV signal and management information, the NTSC/ATSC/QAM/OOB Network Interface Module is set at first slot.
6. TV signal receiving module according to claim 5 is provided with cable TV decipher module at described second slot.
7. TV signal receiving module according to claim 1, wherein said decoder comprise MPEG-2 decoder and image decoding device.
8. TV signal receiving module according to claim 1 also comprises CPU, is connected with described Network Interface Module, decoder and cable TV decipher module, and the operation of control said modules.
9. TV signal receiving module according to claim 1 comprises also that wherein CPU and described decoder are integrated into one.
10. TV signal receiving module according to claim 1, wherein said television signal provides described television signal via antenna or cable.
11. a TV signal receiving module comprises:
First slot in order to pluggable Network Interface Module to be set, utilizes described Network Interface Module to receive television signal;
Switch is connected to described Network Interface Module, to change the path that described television signal transmits;
Decoder is connected to described switch, so that described television signal is decompressed; And
Cable TV decipher module is connected with decoder and described switch respectively; After wherein said Network Interface Module carries out demodulation and down conversion process with described television signal, switch described switch again and be connected to described decoder or described cable TV decipher, so that described television signal is deciphered or decryption processing.
12. TV signal receiving module according to claim 11 wherein when described television signal is NTSC analog signal, the ATSC DTB Digital Terrestrial Broadcasting signal of terrestrial broadcasting and cable TV, is provided with the NTSC/ATSC Network Interface Module at described first slot.
13. TV signal receiving module according to claim 11, wherein when described television signal is the NTSC analog signal, ATSC DTB Digital Terrestrial Broadcasting signal of terrestrial broadcasting and cable TV and unencrypted digital cable TV signal, the NTSC/ATSC/QAM Network Interface Module is set at described first slot.
14. TV signal receiving module according to claim 11, wherein when described television signal is the NTSC analog signal, ATSC DTB Digital Terrestrial Broadcasting signal, encryption of terrestrial broadcasting and cable TV and unencrypted digital cable TV signal and management information, the NTSC/ATSC/QAM/OOB Network Interface Module is set at first slot.
15. TV signal receiving module according to claim 11, wherein said decoder comprise MPEG-2 decoder and image decoding device.
16. TV signal receiving module according to claim 11 also comprises CPU, is connected with described Network Interface Module, decoder and cable TV decipher module, and the operation of control said modules.
17. TV signal receiving module according to claim 11 comprises also that wherein CPU and described decoder are integrated into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510084587 CN1909647A (en) | 2005-08-01 | 2005-08-01 | TV signal receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510084587 CN1909647A (en) | 2005-08-01 | 2005-08-01 | TV signal receiving module |
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| CN1909647A true CN1909647A (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510084587 Pending CN1909647A (en) | 2005-08-01 | 2005-08-01 | TV signal receiving module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219554A (en) * | 2013-05-30 | 2014-12-17 | 深圳清华大学研究院 | Digital TV receiver and digital TV playing method |
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2005
- 2005-08-01 CN CN 200510084587 patent/CN1909647A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219554A (en) * | 2013-05-30 | 2014-12-17 | 深圳清华大学研究院 | Digital TV receiver and digital TV playing method |
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