CN1816105A - Machine top-set telecontrol signal and video-audio frequency signal multi-zone extending system and method - Google Patents
Machine top-set telecontrol signal and video-audio frequency signal multi-zone extending system and method Download PDFInfo
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- CN1816105A CN1816105A CN 200610049722 CN200610049722A CN1816105A CN 1816105 A CN1816105 A CN 1816105A CN 200610049722 CN200610049722 CN 200610049722 CN 200610049722 A CN200610049722 A CN 200610049722A CN 1816105 A CN1816105 A CN 1816105A
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Abstract
The invention includes following parts and steps: set-top box in use for decoding digital part in cable TV signal, and converts the signal to video and audio separated signals, which are transmitted back to the signal converter of the set-top box; transponder of remote control signal in use for receiving infrared remote control signal from sub zones, and converting the infrared remote control signal to signal in radio frequency to transmit to air; the signal converter of the set-top box in use for receiving signal in radio frequency in air, and converting the radio signal to infrared remote control signal, as well as sending the converted and modulated infrared signal to the set-top box; thus, the said separated video and audio signals are converted to composite signal of video and audio; through power amplification, the converted composite signal are transmitted to TV sets in other zones. One set-top box is shared by TV sets at other sub zones.
Description
Technical field
The present invention relates to a kind of communicator, mainly is the multi-zone extending system and the method for a kind of set box remote control signal and video/audio signal.
Background technology
Digital television signal becomes the main flow of TV signal in the future gradually.Original wired analog signal will progressively be broken, and perhaps only broadcast on limited some channels.Current, existing part is implemented the regional or regional of Digital Television popularization, has stopped the broadcast of analog signal.
At incorporate digital television receiver, the television receiver that just possesses digital signal decoding and broadcast simultaneously occurs and becomes before the main flow of tv product, and the main flow kind of the employed television receiver of huge numbers of families remains only possesses the traditional tv receiver that broadcasts and do not possess digital signal decoding.Digital television signal solution at this television receiver, increase a digital television signal decoder that is commonly called as to " set-top box " exactly, look the audio frequency separation signal by decoder with being reduced into after the digital television signal decoding, television image and sound are reproduced in the AV input port of input television receiver on television receiver.Television receiver and set-top box possess the relation of " one to one ", that is to say, a set-top box can only be applied to a television receiver.
But in the present family, generally all dispose some television receivers, such as the parlor, the bedroom, study or the like, and, lay cable tv coax to each zone according to original wired analog signal transmission mode.But, just must dispose a set-top box again on that regional television receiver limit in addition in other zones because the relation of set-top box " one to one " televiews if desired.In the daily life of general family, though in multizone, disposed some television receivers, but that watches simultaneously often has only one or two television receivers, if go to acquire set-top box according to the quantity of television receiver, except insufficient utilization of purchasing investment in addition and producing to top-set hardware equipment, and added burden the cable TV license fee that is multiplied according to set-top box quantity.
Entangle its reason, be exactly because to the infrared control signal of set-top box input and the video/audio signal of set-top box output, can't in a plurality of zones, extend and expand: the control signal that the set-top box Infrared remote controller is sent, must the alignment machine top box, and each other thicker or less opaque shelter can not be arranged; And what set-top box was exported is the separation signal of looking audio frequency, rather than compound video/audio signal, goes so can't be transferred to by the coaxial line of original laying in other zones.If infrared control signal can be sent in a zone, penetrate the bar of wall etc., control the set-top box in another zone, and with the video/audio signal of set-top box output, be transferred to by existing coaxial line on the television receiver of one's respective area, just can solve set-top box can't be between each television receiver in a plurality of zones multiplexing problem.
Summary of the invention
Signal can't be comprised the control signal of input and the video/audio signal of output in order to solve present set-top box, extend and expand to problem in other zones, the invention provides the multi-zone extending system and the method for a kind of set box remote control signal and video/audio signal, be used to realize infrared control signal and the video/audio signal conversion trans-regional transmission in back.
The present invention solves the technical scheme that its technical problem adopts: the multi-zone extending system of this set box remote control signal and video/audio signal comprises:
Set-top box, the numerical portion of the cable TV signal that is used for decoding converts to and looks the audio frequency separation signal, passes the set-top box signal transducer again back;
One group of remote signal transponder that is installed in subregion is used for receiving the infrared remote-controlled signal that the set-top box remote controller of subregion sends, and converts infrared remote-controlled signal to radio frequency signal, sends in the air by the sky alignment;
Be installed in the set-top box signal transducer of main region, be used to receive aerial radio frequency signal and convert infrared remote-controlled signal to, and this remote signal is changed and modulated,, send to set-top box by infrared transmitting tube; The audio frequency separation signal of looking with set-top box output converts to and looks the audio frequency composite signal simultaneously, looks the audio frequency composite signal after power amplification after the conversion, by coaxial line, is transferred on the television receiver in other subregions; And
Coaxial inlet wire is connected with set-top box by the set-top box signal transducer in main region.
The present invention can be further perfect by following manner:
Remote signal transponder of the present invention comprises:
Single-chip microcomputer, with it is that the center connects infrared receiving circuit, wireless transmitter module and config memory respectively, after being used for the infrared pulse remote signal that to receive and set-top box signal Changer Device and numbering together recompile, carry out the high frequency modulated of characteristic frequency by the wireless signal modulation circuit, and pass through a day alignment space transmission;
Infrared receiving circuit comprises infrared receiving tube, and what be used for that the receiving set up box remote controller sends is modulated at infrared pulse remote signal on the 38KHz; And demodulator circuit, be used for demodulation infrared pulse remote signal;
Wireless transmitter module comprises the wireless signal modulation circuit and the antenna that are used for high frequency modulated;
Config memory, the set-top box signal Changer Device that is used to store with the pairing of remote signal transponder is numbered.
Set-top box signal transducer of the present invention comprises:
The video/audio signal treatment circuit, by looking the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal with look audio frequency composite signal hybrid circuit and form: look the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal, being used for looking the audio frequency separation signal is combined into and looks the audio frequency composite signal and modulate on special frequency channel, conversion back obtains looks the audio frequency composite signal, and audio frequency composite signal hybrid circuit is looked in input; Look audio frequency composite signal hybrid circuit, be used for looking of obtaining of conversion after the audio frequency composite signal carries out power amplification, superpose, by the output of cable TV coaxial line, be transferred on the television receiver in other zones again with original signal on the coaxial line;
The remote signal treatment circuit is the center with the single-chip microcomputer, connect wireless receiving module, infrared emission circuit respectively, wireless receiving module wherein comprises the wireless signal demodulator circuit and the antenna of the high frequency demodulation that is used for characteristic frequency, and the infrared emission circuit comprises drive circuit and infrared transmitting tube; Single-chip microcomputer, be used for the signal decoding that to receive by wireless receiving module, obtain infrared pulse remote signal and set-top box signal Changer Device numbering, and whether the compare facilities numbering is consistent with the device numbering of this set-top box signal transducer, if consistent, then with the infrared pulse remote signal, by the square-wave frequency modulation of 38KHz and after overdrive circuit drives, by the infrared transmitting tube emission, send to set-top box, realize control to set-top box;
Digital television signal of the present invention is by coaxial inlet wire reader set-top box signal transducer, bypass in looking audio frequency composite signal hybrid circuit, directly output enters the coaxial input of set-top box, after set-top box is decoded digital television signal, by set-top box AV output, be input to again and look the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal in the set-top box signal transducer.
Remote signal transponder configuration of the present invention is a plurality of, is installed in the different subregions.Described set-top box signal transducer disposes one to one according to the quantity of set-top box.
Every set-top box signal transducer of the present invention possesses unique device numbering, and storage is numbered with the set-top box signal Changer Device of this transponder pairing in the remote signal transponder.
The multi-zone extending method of this set box remote control signal of the present invention and video/audio signal mainly comprises the steps:
1), when when program request appears in a plurality of subregions, receive the infrared remote-controlled signal that the set-top box remote controller in the subregion sends by the remote signal transponder that is installed in subregion, and convert infrared remote-controlled signal to radio frequency signal, send in the air by the sky alignment;
2), receive aerial radio frequency signal, radio frequency signal is reduced into infrared remote-controlled signal, and this remote signal is changed and modulated,, send to set-top box by infrared transmitting tube by the set-top box signal transducer that is installed in main region;
3), cable TV signal at first enters the set-top box signal transducer, and then imports set-top box into; Numerical portion in the set top box decodes cable TV signal converts to and looks the audio frequency separation signal, passes the set-top box signal transducer again back, and the audio frequency separation signal is looked in the output of set-top box signal transducer, by the AV holding wire, and input main region television set;
4), the audio frequency separation signal of looking that will export by the set-top box signal transducer converts to and looks the audio frequency composite signal, look the audio frequency composite signal after power amplification after the conversion, pass through coaxial line, input cable TV signal distributor, look the audio frequency composite signal after the cable TV signal distributor distributes, enter each sub regions by the coaxial cable of laying, be transferred on the television receiver in other subregions.
Wherein the remote signal transponder in this method comprises infrared receiving tube, infrared demodulator, single-chip microcomputer, config memory, wireless signal modulation circuit and antenna, infrared receiving tube receiving set up box remote controller sends is modulated at infrared pulse remote signal on the 38KHz, and by after the infrared demodulator demodulation, the I/O mouth of input single-chip microcomputer; Single-chip microcomputer is obtained the set-top box signal Changer Device numbering with the pairing of this transponder from config memory, after single-chip microcomputer is numbered together recompile with infrared pulse remote signal and set-top box signal Changer Device, carry out the high frequency modulated of characteristic frequency by the wireless signal modulation circuit, send by alignment space, sky.
Set-top box signal transducer described in the inventive method comprises video/audio signal treatment circuit and remote signal treatment circuit:
Wherein the video/audio signal treatment circuit is made up of AV/RF change-over circuit and signal mixed circuit; Digital television signal is by cable TV coaxial line reader set-top box signal transducer, and bypass in signal mixed circuit is directly exported and entered the coaxial input of set-top box; After set-top box is decoded digital television signal,, be input to the AV/RF change-over circuit of set-top box signal transducer again by set-top box AV output; The AV/RF change-over circuit is finished and is looked the audio frequency separation signal to the conversion of looking the audio frequency composite signal and the modulation on special frequency channel, and conversion back obtains looks audio frequency composite signal, input signal hybrid circuit; After signal mixed circuit will be changed looking of obtaining the audio frequency composite signal carries out power amplification, superpose with original signal in the coaxial line, again by the output of cable TV coaxial line;
Remote signal treatment circuit in the inventive method is by antenna and wireless signal demodulator circuit, single-chip microcomputer, drive circuit and infrared transmitting tube are formed, antenna receives aerial wireless signal, and carry out the high frequency demodulation of characteristic frequency by the wireless signal demodulator circuit, after receiving signal, the input single-chip microcomputer the I/O mouth; Single-chip microcomputer obtains infrared pulse remote signal and set-top box signal Changer Device numbering with signal decoding; Whether single-chip microcomputer at first judgment device numbering is consistent with the device numbering of this set-top box signal transducer, if consistent, then the infrared pulse remote signal passed through the square-wave frequency modulation of 38KHz and after the overdrive circuit driving, launched by infrared transmitting tube.
The invention has the beneficial effects as follows: the present invention can be with the infrared control signal of sending in one of a plurality of zones non-indigenous, be transferred to corresponding set-top box exactly, and video/audio signal with set-top box output, by the cable TV coaxial line of having laid, be transferred to the television receiver in this zone, realize set-top box sharing between some television receivers of multizone.Television receiver in a plurality of zones can be shared same digital TV set-top box.The use of television receiver in any one zone, all with this set-top box be installed in the one's respective area the same convenient.The direct economy effect is exactly that the user has reduced the expense of buying many set-top box, avoids paying the cable TV license fee of corresponding extra increase simultaneously.
Description of drawings
Fig. 1 is a system applies schematic diagram of the present invention;
Fig. 2 is a remote signal transponder theory diagram among the present invention;
Fig. 3 is a set-top box signal commutator principle block diagram among the present invention;
Fig. 4 is a pair configuration schematic diagram among the present invention;
Fig. 5 is the circuit diagram of remote signal transponder of the present invention;
Fig. 6 is the circuit diagram of set-top box signal transducer among the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and concrete mode.
Fig. 1 system applies schematic diagram is explained the application scheme of this external member under actual environment.Cable TV signal after the coaxial inlet wire 11 in open air enters family, the main region that enters set-top box 8 and set-top box signal transducer 7 places.
1, the transmission of video/audio signal:
Cable TV signal at first enters set-top box signal transducer 7, and then imports set-top box 8 into.Numerical portion in the set-top box 8 decoding cable TV signals converts to and looks the audio frequency separation signal, passes set-top box signal transducer 7 again back.
The audio frequency separation signal is looked in 7 outputs of set-top box signal transducer, by AV holding wire 9, imports main region television set 10, realizes the rating function of local television set.
Simultaneously, set-top box signal transducer 7 will be looked the audio frequency separation signal and be converted to and look the audio frequency composite signal, through amplification and with coaxial line in original signal superpose after, by coaxial line, input cable TV signal distributor 5.Look the audio frequency composite signal after cable TV signal distributor 5 distributes, enter each sub regions, in the input subregion television set 3 by the coaxial cable of laying 4.Subregion television set 3 through searching platform be transferred to this compound video/audio signal on the modulated frequency range, just can reappear image and sound, realize the rating function of television set in the subregion.
2, the transmission of set box remote control signal:
Set-top box remote controller 1 is brought in the subregion of desiring rating.Set-top box remote controller 1 is aimed at remote signal transponder 2, press the button on the remote controller, send infrared remote-controlled signal.After remote signal transponder 2 received infrared remote-controlled signal, rectification and recompile were by the mode of characteristic frequency modulation back with radio wave, to spatial emission.
Radio wave coverage can be arranged between 20 meters to 50 meters, can pass through wall 6 barriers such as grade.
The set-top box signal transducer 7 of main region receives aerial radio wave signal by characteristic frequency.If receive wireless signal, with this signal rectification, and judge whether coding is consistent, be to ensure that overlap external member uses the interference that also can not cause each other simultaneously among a small circle even require the consistent purpose of coding.If coding is consistent, then the remote signal partial reduction in the signal is become infrared signal, and be transmitted to set-top box 8 by infrared transmitting tube.So, just, can realize the interior distant control function in other zones to set-top box.
Figure 2 shows that the theory diagram of remote signal transponder.
The remote signal transponder is by infrared receiving tube and infrared demodulator, single-chip microcomputer and config memory, and wireless signal modulation circuit and antenna, and relay indicating light is formed.
Infrared receiving tube receiving set up box remote controller sends is modulated at infrared pulse remote signal on the 38KHz, and by after the infrared demodulator demodulation, the I/O mouth of input single-chip microcomputer.Single-chip microcomputer is obtained the set-top box signal Changer Device numbering with the pairing of this transponder from config memory.After single-chip microcomputer is numbered together recompile with infrared pulse remote signal and set-top box signal Changer Device, carry out the high frequency modulated of characteristic frequency, send by alignment space, sky by the wireless signal modulation circuit.
The different flashing modes of relay indicating light are used to represent the operating state of remote signal transponder.
Figure 3 shows that the theory diagram of set-top box signal transducer.
Be divided into two parts on the set-top box signal converter circuit: video/audio signal processing section and remote signal processing section.
The video/audio signal processing section is made up of AV/RF change-over circuit and signal mixed circuit.Digital television signal is by cable TV coaxial line reader set-top box signal transducer, and bypass in signal mixed circuit is directly exported and entered the coaxial input of set-top box.After set-top box is decoded digital television signal,, be input to the AV/RF change-over circuit of set-top box signal transducer again by set-top box AV output.The AV/RF change-over circuit is finished and is looked the audio frequency separation signal to the conversion of looking the audio frequency composite signal and the modulation on special frequency channel.Conversion back obtains looks audio frequency composite signal, input signal hybrid circuit.After signal mixed circuit will be changed looking of obtaining the audio frequency composite signal carry out power amplification, with the original signal stack in the coaxial line, again by the output of cable TV coaxial line.
The remote signal processing section is by antenna and wireless signal demodulator circuit, single-chip microcomputer, and drive circuit and infrared transmitting tube are formed.Antenna receives aerial wireless signal, and carries out the high frequency demodulation of characteristic frequency by the wireless signal demodulator circuit.After receiving signal, the input single-chip microcomputer the I/O mouth.Single-chip microcomputer obtains infrared pulse remote signal and set-top box signal Changer Device numbering with signal decoding.At first whether the judgment device numbering is consistent with the device numbering of this set-top box signal transducer for single-chip microcomputer.If consistent,, after the square-wave frequency modulation by 38KHz, and after overdrive circuit drives, launch by infrared transmitting tube then with the infrared pulse remote signal.
Shown in Figure 4 is that the pairing of remote signal transponder and set-top box signal transducer is provided with schematic diagram.
The infrared transmitting tube of set-top box signal transducer is aimed at the infrared receiving tube of remote signal transponder.
Press the button that touches on the set-top box signal transducer, the single-chip microcomputer of set-top box signal transducer after the square-wave frequency modulation by 38KHz, and after overdrive circuit drives, is launched unique device numbering of sheet stored by infrared transmitting tube.
The infrared receiving tube of remote signal transponder receives that this is modulated at the signal on the 38KHz, after infrared demodulator demodulation, and the I/O mouth of input single-chip microcomputer.The single-chip microcomputer decoding obtains the device numbering of set-top box signal transducer, and this device numbering is write config memory.
The different flashing modes of relay indicating light are used to represent configuration successful whether state.
Figure 5 shows that the circuit diagram of remote signal transponder.
The remote signal transponder adopts 4 joint AAA powered battery.
The remote signal transponder is by single chip circuit, configuration memory circuit, and infrared receiving demodulation circuit and wireless-modulated and transtation mission circuit are formed.
1, single chip circuit:
Single-chip microcomputer such as 89C52 that single-chip microcomputer adopts the inside of MCS-51 series to carry program storage realize.C7, R7 and button S2 have formed to power on and have automatically reset and manual reset circuit, link to each other with the resetting pin RST of 89C52.The LED signal of the P1.4 pin output of 89C52 through R13, and by 9013 low-power transistor Q1 amplification, drives infrared indicator light D1 flicker, points out different operating states.
2, configuration memory circuit:
Adopt the storage of AT24C02 chip realization to configuration information.This chip is 2K EEPROM, and its clock incoming line SCL and data input-output line SDA link to each other with P1.6 with the P1.5 of 89C52, are used for preserving the device coding of the set-top box signal transducer that is matched.
3, infrared receiving demodulation circuit:
Adopt SM3386 infrared remote-controlled signal receiver module, additional necessary peripheral resistor-capacitor unit is realized reception and the demodulation to infrared remote-controlled signal.SM3386 is infrared receiving tube and the integrated little module of infrared demodulator, the direct infrared remote-controlled signal of demodulation 38KHZ, and with the P3.2 pin of the input of the impulse wave after demodulation 89C52.
4, wireless signal modulation and transtation mission circuit:
Adopt the nRF401 radio transmitting and receiving chip, and additional necessary peripheral resistance, inductance and capacitive element are realized high frequency modulated and the wireless transmission to signal.NRF401 is the monolithic FSK transceiving chip of carrier wave 433MHz, need not to carry out initialization and configuration, does not need data are carried out Manchester's code.
What the P3.3 of 89C52 connected nRF401 enables pin CS, and before needs sent data, set CS pin made nRF401 enter operating state; The P3.1TXD pin of 89C52 connects the data input pin DIN of nRF401, under the prerequisite that the CS of nRF401 pin enables, 89C52 transmits the data that will send by this path to nRF401, after process nRF401 chip is modulated, by the antenna P1 of antenna connecting pin ANT1 connection, to aerial transmission wireless high-frequency signal.
Figure 6 shows that the circuit diagram of set-top box signal transducer.
The set-top box signal transducer is by single-chip microcomputer and power circuit, the wireless signal demodulator circuit, and the infrared emission circuit, AV/RF change-over circuit and signal mixed circuit are formed.
1, single-chip microcomputer and power circuit:
The set-top box signal transducer adopts external power supply pressurizer 6V power supply.The 6V power supply inserts by the J8 socket, through C3, after C4 voltage stabilizing and the filtering, imports the Vin pin that 7,805 three terminal voltages are adjusted chip U2, and stable 5V voltage uses for entire equipment by the output of Vout mouth.
Single-chip microcomputer adopts the inside of MCS-51 series to have the single-chip microcomputer such as the 89C52 of program storage.C7, R5 and button S2 have formed to power on and have automatically reset and manual reset circuit, link to each other with the resetting pin RST of 89C52.R1 is connected the P1.4 pin of 89C52 with button S1, press S1 after, 89C52 sends the device numbering of this transducer continuously by the infrared emission circuit to the outside.
2, wireless signal demodulator circuit:
Adopt the nRF401 radio transmitting and receiving chip, additional necessary peripheral resistance, inductance and capacitive element are realized reception and the demodulation to the wireless high-frequency signal.
NRF401 passes through antenna connecting pin ANT1, the wireless high-frequency signal from antenna P1 from aerial reception characteristic frequency, and carry out rectification.The data output pin DOUT of nRF401 connects the P3.2RXD pin of 89C52, and the data behind the rectification are imported 89C52 into by this path.
3, infrared emission circuit:
When sending data by infrared mouthful, the signal modulated square wave of the P3.4 pin output 38KHZ of 89C52, the P1.0 pin output remote signal impulse wave of 89C52.Bipod interconnects, and realizes the amplitude modulation modulation of impulse wave based on the 38KHZ square wave.Remote signal after the modulation drives infrared transmitting tube D1 and sends to the outside after amplifying by 9013 triode power Q1.
4, AV/RF change-over circuit:
The audio signal L channel L-AUDIO of set-top box is from the input of JP0 jack, and R channel R-AUDIO imports from the JP1 jack.After the left and right sound track signals short circuit mixes, isolate, carry out signal by 9018 small-power high-frequency triode Q2 and amplify through capacitor C 8.Signal after the amplification carries out the adjustment of phase place and amplitude by coupling inductance T1.Adjusted audio signal by C18 and R18, inserts the E utmost point of 9018 small-power high-frequency triode Q3.
The vision signal Video of set-top box imports from jack JP2.The Video signal of input is through R20, and R21 behind the filter circuit that R22 and C19 form, also inserts the E utmost point of 9018 small-power high-frequency triode Q3, carries out compoundly with adjusted audio signal, forms and looks the audio frequency composite signal.
With 9018 small-power high-frequency triode Q4 and element R23 on every side, R24, C21, C22, C23, L6 have formed a high frequency self-oscillating circuit, produce high frequency carrier about a 6.5MHZ at the E of the Q4 utmost point.After carrier wave process R25 and the R26 dividing potential drop, import the B utmost point of 9018 small-power high-frequency triode Q3.So, extremely go up, occur being looked the audio frequency composite signal after the carrier modulation at the C of 9018 small-power high-frequency triode Q3.
This looks the signal mixed circuit that the audio frequency composite signal enters the back.
5, signal mixed circuit:
Look the audio frequency composite signal through C25, enter the B utmost point of 2SC3355 high frequency amplifier tube Q5.Q5 and resistance on every side, electric capacity and inductance component have been formed first order signal amplification circuit, and composite signal is carried out power amplification and paraphase.Video/audio signal after paraphase and the amplification is exported from the C utmost point of Q5, and connects adjustable resistance R40 by C28.
Adjustable resistance R40 is used to adjust the whole gain amplifier of signal mixed circuit.Signal from the output of the R40 tap utmost point through C34, enters the B utmost point of 2SC3355 high frequency amplifier tube Q6.Q6 and around resistance, electric capacity and inductance component have been formed second level signal amplification circuit, to look the audio frequency composite signal carries out that the power secondary amplifies and once more paraphase revert to former phase place.
The audio frequency composite signal of looking after secondary amplifies is exported from the C utmost point of Q6, and mixes by capacitor C 37 original signals back and on the coaxial line.C38 and L9 have constituted anti-jamming circuit, and High-frequency Interference is filtered.
The original signal of coaxial line is from jack JP4 input, and by capacitor C 42, and generates from the AV/RF change-over circuit and mixes through the composite signal that the secondary amplifying circuit amplifies.C41 and L10 have constituted anti-jamming circuit, and High-frequency Interference is filtered.Mixed signal is exported from signal output JP3.
Claims (9)
1, the multi-zone extending system of a kind of set box remote control signal and video/audio signal, it is characterized in that: native system comprises:
Set-top box (8), the numerical portion of the cable TV signal that is used for decoding converts to and looks the audio frequency separation signal, passes set-top box signal transducer (7) again back;
One group of remote signal transponder (2) that is installed in subregion is used for receiving the infrared remote-controlled signal that the set-top box remote controller (1) of subregion sends, and converts infrared remote-controlled signal to radio frequency signal, sends in the air by the sky alignment;
Be installed in the set-top box signal transducer (7) of main region, be used to receive aerial radio frequency signal and convert infrared remote-controlled signal to, and this remote signal is changed and modulated,, send to set-top box (8) by infrared transmitting tube; The audio frequency separation signal of looking with set-top box (8) output converts to and looks the audio frequency composite signal simultaneously, looks the audio frequency composite signal after power amplification after the conversion, by coaxial line, is transferred on the television receiver in other subregions; And
Coaxial inlet wire (11) is connected with set-top box (8) by set-top box signal transducer (7) in main region.
2, the multi-zone extending system of set box remote control signal according to claim 1 and video/audio signal is characterized in that: described remote signal transponder (2) comprising:
Single-chip microcomputer, with it is that the center connects infrared receiving circuit, wireless transmitter module and config memory respectively, after being used for the infrared pulse remote signal that to receive and set-top box signal Changer Device and numbering together recompile, carry out the high frequency modulated of characteristic frequency by the wireless signal modulation circuit, and pass through a day alignment space transmission;
Infrared receiving circuit comprises infrared receiving tube, and what be used for that the receiving set up box remote controller sends is modulated at infrared pulse remote signal on the 38KHz; And demodulator circuit, be used for demodulation infrared pulse remote signal;
Wireless transmitter module comprises the wireless signal modulation circuit and the antenna that are used for high frequency modulated;
Config memory is used for storage and numbers with the set-top box signal Changer Device of remote signal transponder (2) pairing.
3, the multi-zone extending system of set box remote control signal according to claim 1 and 2 and video/audio signal is characterized in that: described remote signal transponder (2) configuration is a plurality of, is installed in the different subregions.
4, the multi-zone extending system of set box remote control signal according to claim 1 and video/audio signal is characterized in that: described set-top box signal transducer comprises:
The video/audio signal treatment circuit, by looking the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal with look audio frequency composite signal hybrid circuit and form: look the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal, being used for looking the audio frequency separation signal is combined into and looks the audio frequency composite signal and modulate on special frequency channel, conversion back obtains looks the audio frequency composite signal, and audio frequency composite signal hybrid circuit is looked in input; Look audio frequency composite signal hybrid circuit, be used for looking of obtaining of conversion after the audio frequency composite signal carries out power amplification, superpose with original signal on the coaxial line, again by the output of cable TV coaxial line;
The remote signal treatment circuit is the center with the single-chip microcomputer, connect wireless receiving module, infrared emission circuit respectively, wireless receiving module wherein comprises the wireless signal demodulator circuit and the antenna of the high frequency demodulation that is used for characteristic frequency, and the infrared emission circuit comprises drive circuit and infrared transmitting tube; Single-chip microcomputer, be used for the signal decoding that to receive by wireless receiving module, obtain infrared pulse remote signal and set-top box signal Changer Device numbering, and whether the compare facilities numbering is consistent with the device numbering of this set-top box signal transducer, if consistent, then with the infrared pulse remote signal, after the square-wave frequency modulation by 38KHz, and after overdrive circuit drives, launch by infrared transmitting tube; And
Digital television signal is by coaxial inlet wire (11) reader set-top box signal transducer (7), bypass in looking audio frequency composite signal hybrid circuit, directly output enters the coaxial input of set-top box, after set-top box (8) is decoded digital television signal, by set-top box AV output, be input to again and look the audio frequency separation signal to the change-over circuit of looking the audio frequency composite signal in the set-top box signal transducer (7).
5, according to the multi-zone extending system of claim 1 or 4 described set box remote control signals and video/audio signal, it is characterized in that; Described set-top box signal transducer (7) disposes one to one according to the quantity of set-top box (8).
6, the multi-zone extending system of set box remote control signal according to claim 1 and 2 and video/audio signal, it is characterized in that: described every set-top box signal transducer (7) possesses unique device numbering, and storage is numbered with the set-top box signal Changer Device of this transponder pairing in the remote signal transponder (2).
7, the multi-zone extending method of a kind of set box remote control signal and video/audio signal is characterized in that: mainly comprise the steps:
1), when when program request appears in a plurality of subregions, receive the infrared remote-controlled signal that the set-top box remote controller (1) in the subregion sends by the remote signal transponder (2) that is installed in subregion, and convert infrared remote-controlled signal to radio frequency signal, send in the air by the sky alignment;
2), receive aerial radio frequency signal by the set-top box signal transducer (7) that is installed in main region, radio frequency signal is reduced into infrared remote-controlled signal, and this remote signal changed and modulate, by infrared transmitting tube, send to set-top box (8);
3), cable TV signal at first enters set-top box signal transducer (7), and then imports set-top box (8) into; Numerical portion in set-top box (8) the decoding cable TV signal, convert to and look the audio frequency separation signal, pass set-top box signal transducer (7) again back, the audio frequency separation signal is looked in set-top box signal transducer (7) output, by AV holding wire (9), input main region television set;
4), the audio frequency separation signal of looking that will export by set-top box signal transducer (7) converts to and looks the audio frequency composite signal, look the audio frequency composite signal after power amplification after the conversion, pass through coaxial line, input cable TV signal distributor (5), look the audio frequency composite signal after cable TV signal distributor (5) distributes, enter each sub regions by the coaxial cable of laying (4), be transferred on the television receiver in other subregions.
8, the multi-zone extending method of set box remote control signal according to claim 7 and video/audio signal, it is characterized in that: the remote signal transponder comprises infrared receiving tube, infrared demodulator, single-chip microcomputer, config memory, wireless signal modulation circuit and antenna, infrared receiving tube receiving set up box remote controller sends is modulated at infrared pulse remote signal on the 38KHz, and by after the infrared demodulator demodulation, the I/O mouth of input single-chip microcomputer; Single-chip microcomputer is obtained the set-top box signal Changer Device numbering with the pairing of this transponder from config memory, after single-chip microcomputer is numbered together recompile with infrared pulse remote signal and set-top box signal Changer Device, carry out the high frequency modulated of characteristic frequency by the wireless signal modulation circuit, send by alignment space, sky.
9, the multi-zone extending method of set box remote control signal according to claim 7 and video/audio signal is characterized in that: described set-top box signal transducer comprises video/audio signal treatment circuit and remote signal treatment circuit:
Wherein the video/audio signal treatment circuit is made up of AV/RF change-over circuit and signal mixed circuit; Digital television signal is by cable TV coaxial line reader set-top box signal transducer, and bypass in signal mixed circuit is directly exported and entered the coaxial input of set-top box; After set-top box is decoded digital television signal,, be input to the AV/RF change-over circuit of set-top box signal transducer again by set-top box AV output; The AV/RF change-over circuit is finished and is looked the audio frequency separation signal to the conversion of looking the audio frequency composite signal and the modulation on special frequency channel, and conversion back obtains looks audio frequency composite signal, input signal hybrid circuit; After signal mixed circuit will be changed looking of obtaining the audio frequency composite signal carries out power amplification, superpose with original signal in the coaxial line, again by the output of cable TV coaxial line;
Remote signal treatment circuit wherein is by antenna and wireless signal demodulator circuit, single-chip microcomputer, and drive circuit and infrared transmitting tube are formed, antenna receives aerial wireless signal, and carry out the high frequency demodulation of characteristic frequency by the wireless signal demodulator circuit, receive signal after, the input single-chip microcomputer the I/O mouth; Single-chip microcomputer obtains infrared pulse remote signal and set-top box signal Changer Device numbering with signal decoding; Whether single-chip microcomputer at first judgment device numbering is consistent with the device numbering of this set-top box signal transducer, if consistent, then the infrared pulse remote signal passed through the square-wave frequency modulation of 38KHz and after the overdrive circuit driving, launched by infrared transmitting tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049722 CN1816105A (en) | 2006-03-03 | 2006-03-03 | Machine top-set telecontrol signal and video-audio frequency signal multi-zone extending system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610049722 CN1816105A (en) | 2006-03-03 | 2006-03-03 | Machine top-set telecontrol signal and video-audio frequency signal multi-zone extending system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395902B (en) * | 2006-12-08 | 2011-08-31 | 松下电器产业株式会社 | Remote control system |
| CN101887636B (en) * | 2009-05-13 | 2011-12-28 | 深圳市汇川信息技术有限公司 | Infrared signal transmission circuit of remote controller |
| CN101184153B (en) * | 2007-11-09 | 2012-09-05 | 康佳集团股份有限公司 | Method of implementing infrared remote control of digital cable TV |
| CN101465977B (en) * | 2007-12-21 | 2013-03-06 | 康佳集团股份有限公司 | Method, network and equipment for playing television signal |
| CN105892327A (en) * | 2014-10-17 | 2016-08-24 | 北京圣海通科技有限公司 | One-to-many wireless remote control system for water pollutant reduction system dynamic floating bodies |
-
2006
- 2006-03-03 CN CN 200610049722 patent/CN1816105A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395902B (en) * | 2006-12-08 | 2011-08-31 | 松下电器产业株式会社 | Remote control system |
| CN101184153B (en) * | 2007-11-09 | 2012-09-05 | 康佳集团股份有限公司 | Method of implementing infrared remote control of digital cable TV |
| CN101465977B (en) * | 2007-12-21 | 2013-03-06 | 康佳集团股份有限公司 | Method, network and equipment for playing television signal |
| CN101887636B (en) * | 2009-05-13 | 2011-12-28 | 深圳市汇川信息技术有限公司 | Infrared signal transmission circuit of remote controller |
| CN105892327A (en) * | 2014-10-17 | 2016-08-24 | 北京圣海通科技有限公司 | One-to-many wireless remote control system for water pollutant reduction system dynamic floating bodies |
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