CN201118740Y - Radio wave transmission device for wired digital TV receiver remote control signal - Google Patents
Radio wave transmission device for wired digital TV receiver remote control signal Download PDFInfo
- Publication number
- CN201118740Y CN201118740Y CNU2007201880733U CN200720188073U CN201118740Y CN 201118740 Y CN201118740 Y CN 201118740Y CN U2007201880733 U CNU2007201880733 U CN U2007201880733U CN 200720188073 U CN200720188073 U CN 200720188073U CN 201118740 Y CN201118740 Y CN 201118740Y
- Authority
- CN
- China
- Prior art keywords
- signal
- receiver
- electric capacity
- output
- connects
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Disclosed is a remote control signal radio wave transmitting device of a wired digital television receiver, which consists of a transmitter and a receiver, and is characterized in that: the transmitter is composed of a wireless transmitting circuit and a transmitting antenna, the wireless transmitting circuit receives the outside control signal and converts the control signal into the frequency modulated pulse and then transmits the pulse to the transmitting antenna, the transmitting antenna ANT1 is converted into the frequency modulated radio wave for being transmitted to the receiver, and the output end of the receiver outputs the wired digital television control signal. The transmitting device has the functional effects of simple structure and convenient assembling, and adopts the radio wave to transmit the control signal so as to realize the remote control to the receiver by the transmitter by bypassing a barrier, and when a user enters another room from one room, the transmitter in the hand can also control the receiver at the original position.
Description
Technical field
The utility model relates to the transceiver of wireless remote control signal, relates in particular to cable digital TV receiver remote signal radio wave conveyer.
Background technology
At present, known cable digital TV all disposes transmitter and receiver, wherein transmitter is exactly the remote controller that is commonly called as, receiver is exactly a set-top box, and the signal transmission between the two is to carry out with the mode of infrared ray transmission remote signal, and the transmitter remote-control receiver carries out TV programme and selects.And the charge of cable digital TV is higher, and every TV all will dispose independently receiver, for the user, cost prohibitive, therefore, the applicant installs splitter at the output of set-top box, can both see cable digital TV by all TVs of splitter multiple TV set realization in parallel one family.But when the remote signal receiver window of the infrared head of remote controller and receiver is in non-straightforward position, then can't effectively transmit remote signal, cause receiver can't carry out the selection of TV programme.Give the next inconvenience of user's generation that is associated with multiple TV set by splitter.Be difficult to be implemented in the optional position to the set-top box Long-distance Control, when the user enters another room from a room, the transmitter in its hand is with regard to the set-top box of uncontrollable situ.
The shortcoming of existing cable digital TV remote control is: adopt the infrared transmission mode, transmitter can't carry out Long-distance Control to receiver by the cut-through thing.
Summary of the invention
The cable digital TV receiver remote signal radio wave conveyer that provides is provided the purpose of this utility model, can realize the Long-distance Control of transmitter cut-through thing to receiver.
The purpose of this utility model can reach by following technical measures, it is a kind of cable digital TV receiver remote signal radio wave conveyer, form by transmitter and receiver, its key is: described transmitter is made up of wireless transmission circuit and transmitting antenna, described wireless transmission circuit is provided with signal input end and receives extraneous control signal, and control signal is converted to frequency modulation on pulse, output by described wireless transmission circuit sends to described transmitting antenna, this transmitting antenna is converted to the FM radio set ripple and sends to described receiver, this receiver is made up of wireless receiving circuit and reception antenna, wherein reception antenna is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit, wireless receiving circuit is the cable digital TV control signal with the frequency modulation on pulse conversion of signals, and the output of wireless receiving circuit is exported this cable digital TV control signal.
The digital remote control signal is carried ultrared transmission and receives transmission and the reception that changes the lift-launch radio wave into.The characteristic of utilizing the non-rectilinear of radio wave to propagate, the barrier that remote signal can be got around between remote controller and the receiver transmits, and reaches in the purpose of may command receiver all of chummery not.Make the user need not be for all dispose the also normal purpose of TV reception of a receiver at every television set of chummery not.
Described wireless transmission circuit is made up of FM modulator, power amplifier reflector and transmission frequency synthesizer, wherein the transmission frequency synthesizer is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator and power amplifier reflector respectively, the input of described FM modulator receives extraneous control signal, the output of FM modulator sends modulation signal to described power amplifier reflector, and the output of this power amplifier reflector connects described transmitting antenna;
Described wireless receiving circuit is made up of FM demodulator, receiving mixer and receive frequency synthesizer, wherein the receive frequency synthesizer is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator and receiving mixer respectively, the input of this receiving mixer connects described reception antenna, the output of receiving mixer sends mixed frequency signal to described FM demodulator, and the output of this FM demodulator is exported described cable digital TV control signal.
The input of described wireless transmission circuit is connected with signal processing circuit, this signal processing circuit is by current-limiting resistance, isolation capacitance, pull-up resistor, the 5th, the 6th, the 7th electric capacity, first inductance and variable capacitance diode are formed, the control signal in the described external world of a termination of current-limiting resistance wherein, one end of the described isolation capacitance of another termination, the other end of isolation capacitance connects the front end of described the 6th electric capacity, the rear end of the 6th electric capacity connects the first input end of described wireless transmission circuit, the front end of described the 6th electric capacity also connects the positive pole of described variable capacitance diode, the negative pole of this variable capacitance diode connects an end of described the 5th electric capacity, the other end of the 5th electric capacity connects second input of described wireless transmission circuit, after the other end of described the 5th electric capacity is connected in series described first inductance, be connected with the rear end of described the 6th electric capacity, the two ends of described first inductance also are connected to described the 7th electric capacity, the negative pole of described variable capacitance diode also is connected with an end of the 4th resistance, the other end of the 4th resistance is serially connected with an end of second electric capacity, the other end ground connection of this second electric capacity, the positive pole of described variable capacitance diode also is serially connected with the 5th grounding through resistance, and the two ends of the 5th resistance also are connected to the 3rd electric capacity.
Described wireless transmission circuit is a wireless sending module, and this wireless sending module is provided with the channel signal end, and this channel signal end is connected with the sendaisle selector; Described wireless receiving circuit is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with the receive path selector.
Adopt the sendaisle selector, can adopt multiple frequency channel to realize communication as required, avoid occurring between different transmitters, the receiver signal and disturb.
At the receiver of not producing as yet, production firm can directly replace infrared transmission module and infrared receiving module with wireless transmitter module and wireless receiving module in process of production.Becoming digital pulse signal after the processing of circuit of the control signal that remote controller key sends in remote control directly sends into and has the FM modulator, frequency synthesis, the large scale integrated circuit module of power amplification and emission function.With frequency-modulated wave form wireless transmission.Receiver is by having the reception mixing, frequency synthesis, and the large scale integrated circuit of FM demodulation function carries out after the demodulation output digital pulse signal to the frequency-modulated wave that receives and handles in the receiver other circuit, transmits and receives thereby reach remote signal.Reach the purpose of selecting TV signal at the equal may command receiver of chummery not equally.Above-mentioned this class has the modulation power amplifier at present, emission; Receive, mixing, the product of existing multiple different capacity different frequency is sold on the paired large scale integrated circuit module market of demodulation.When adopting which kind of specific product to produce multiple combination selection can be arranged.
Also can provide the external hanging type conversion equipment at present commercially available receiver and subsidiary at random remote controller with infrared load mode transmission remote signal.
A kind of cable digital TV receiver remote signal radio wave conveyer, form by transmitter and receiver, its key is: described transmitter is by infrared signal receiver, wireless transmission circuit and transmitting antenna are formed, described infrared signal receiver receives extraneous infrared control signal, and change infrared control signal into input that the signal of telecommunication sends to described wireless transmission circuit, wireless transmission circuit is a frequency modulation on pulse with electrical signal conversion, output by described wireless transmission circuit sends to described transmitting antenna, and this transmitting antenna is converted to the FM radio set ripple and sends to described receiver.
This receiver is made up of wireless receiving circuit, reception antenna and Infrared Projector, wherein reception antenna is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit, wireless receiving circuit is the signal of telecommunication with the frequency modulation on pulse conversion of signals, the output of wireless receiving circuit is exported this signal of telecommunication and is given described Infrared Projector, and Infrared Projector is outwards exported infrared signal.
Described wireless transmission circuit is made up of FM modulator, power amplifier reflector and transmission frequency synthesizer, wherein the transmission frequency synthesizer is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator and power amplifier reflector respectively, the input of described FM modulator receives extraneous control signal, the output of FM modulator sends modulation signal to described power amplifier reflector, and the output of this power amplifier reflector connects described transmitting antenna;
Described wireless receiving circuit is made up of FM demodulator, receiving mixer and receive frequency synthesizer, wherein the receive frequency synthesizer is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator and receiving mixer respectively, the input of this receiving mixer connects described reception antenna, the output of receiving mixer sends mixed frequency signal to described FM demodulator, and the output of this FM demodulator is exported described cable digital TV control signal.
Be connected with signal processing circuit between the input of described infrared signal receiver and wireless transmission circuit, this signal processing circuit is by current-limiting resistance, isolation capacitance, pull-up resistor, the 5th, the 6th, the 7th electric capacity, first inductance and variable capacitance diode are formed, the signal of telecommunication of the described infrared signal receiver of a termination of current-limiting resistance wherein, one end of the described isolation capacitance of another termination, the other end of isolation capacitance connects the front end of described the 6th electric capacity, the rear end of the 6th electric capacity connects the first input end of described wireless transmission circuit, the front end of described the 6th electric capacity also connects the positive pole of described variable capacitance diode, the negative pole of this variable capacitance diode connects an end of described the 5th electric capacity, the other end of the 5th electric capacity connects second input of described wireless transmission circuit, after the other end of described the 5th electric capacity is connected in series described first inductance, be connected with the rear end of described the 6th electric capacity, the two ends of described first inductance also are connected to described the 7th electric capacity, the negative pole of described variable capacitance diode also is connected with an end of the 4th resistance, the other end of the 4th resistance is serially connected with an end of second electric capacity, the other end ground connection of this second electric capacity, the positive pole of described variable capacitance diode also is serially connected with the 5th grounding through resistance, and the two ends of the 5th resistance also are connected to the 3rd electric capacity.
Described Infrared Projector is made up of 555 oscillating circuits, triode and infrared transmitting tube, wherein the input of 555 oscillating circuits connects the output of described wireless receiving circuit, the input of 555 oscillating circuits connects the base stage of described triode, the grounded emitter of triode, collector electrode connects the negative pole of described infrared transmitting tube, and the positive pole of infrared transmitting tube connects dc positive power.
Described wireless transmission circuit is a wireless sending module, and this wireless sending module is provided with the channel signal end, and this channel signal end is connected with the sendaisle selector; Described wireless receiving circuit is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with the receive path selector.
Also comprise the bar shaped overcoat, have the bar shaped cavity in this bar shaped overcoat, one end opening of cavity, other end sealing, its blind end is equipped with described transmitting antenna, this blind end also is equipped with circuit board, be furnished with described infrared signal receiver and wireless transmission circuit on this circuit board, wherein infrared signal receiver is towards the middle part of described cavity, and the upper wall of described bar shaped overcoat has the button window, the lower wall of described bar shaped overcoat has screwed hole, is set with screw in the screwed hole.
Overlap screw in the screwed hole, be convenient to fix the remote controller of finished product receiver in the bar shaped overcoat.
Be embedded in the remote controller of finished product receiver at the cavity of bar shaped overcoat.Receiver apparatus is put near the set-top box, with receiver with the infrared receiving terminal of infrared emission head alignment machine top box.The remote controller key that operation embeds in the bar shaped overcoat sends infrared pulse signal, and the infrared remote receiver that this infrared signal is enclosed in transmitter together receives.The transmitting antenna of transmitter sends the FM radio set ripple and gives receiver, and receiver is converted to infrared pulse signal and sends to set-top box.Reach the purpose of using the non-direct-view receiver control of remote controller within the specific limits.
Beneficial effect is: simple in structure, easy to assembly, adopt radio wave that control signal is transmitted, can realize the Long-distance Control of transmitter cut-through thing to receiver, when the user enters another room from a room, the transmitter in its hand also can be controlled the receiver of situ.
Description of drawings
Below with reference to accompanying drawing embodiment of the present utility model is further described.
Fig. 1 is the theory diagram of embodiment 1;
Fig. 2 is the theory diagram of embodiment 2;
Fig. 3 is the circuit theory diagrams of transmitter among the embodiment 1;
Fig. 4 is the circuit theory diagrams of receiver among the embodiment 1;
Fig. 5 is the circuit theory diagrams of transmitter among the embodiment 2;
Fig. 6 is the circuit theory diagrams of receiver among the embodiment 2;
Fig. 7 is the mounting structure schematic diagram of transmitter among the embodiment 2;
Fig. 8 is the scheme of installation of receiver among the embodiment 2.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1:
As Fig. 1,3, shown in 4, a kind of cable digital TV receiver of the utility model remote signal radio wave conveyer, form by transmitter and receiver, wherein said transmitter is made up of wireless transmission circuit 1 and transmitting antenna ANT1, described wireless transmission circuit 1 is provided with signal input end and receives extraneous control signal, and control signal is converted to frequency modulation on pulse, output by described wireless transmission circuit 1 sends to described transmitting antenna ANT1, this transmitting antenna ANT1 is converted to the FM radio set ripple and sends to described receiver, this receiver is made up of wireless receiving circuit 2 and reception antenna ANT2, wherein reception antenna ANT2 is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit 2, wireless receiving circuit 2 is the cable digital TV control signal with the frequency modulation on pulse conversion of signals, and the output of wireless receiving circuit 2 is exported this cable digital TV control signal.
The digital remote control signal is carried ultrared transmission and receives transmission and the reception that changes the lift-launch radio wave into.The characteristic of utilizing the non-rectilinear of radio wave to propagate, the barrier that remote signal can be got around between remote controller and the receiver transmits, and reaches in the purpose of may command receiver all of chummery not.Make the user need not be for all dispose the also normal purpose of TV reception of a receiver at every television set of chummery not.
As shown in Figure 3, described wireless transmission circuit 1 is made up of FM modulator 3, power amplifier reflector 4 and transmission frequency synthesizer 5, wherein transmission frequency synthesizer 5 is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator 3 and power amplifier reflector 4 respectively, the input of described FM modulator 3 receives extraneous control signal, the output of FM modulator 3 sends modulation signal to described power amplifier reflector 4, and the output of this power amplifier reflector 4 connects described transmitting antenna ANT1;
As shown in Figure 4, described wireless receiving circuit 2 is made up of FM demodulator 6, receiving mixer 7 and receive frequency synthesizer 8, wherein receive frequency synthesizer 8 is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator 6 and receiving mixer 7 respectively, the input of this receiving mixer 7 connects described reception antenna ANT2, the output of receiving mixer 7 sends mixed frequency signal to described FM demodulator 6, and the output of this FM demodulator 6 is exported described cable digital TV control signal.
The input of described wireless transmission circuit 1 is connected with signal processing circuit 9, this signal processing circuit 9 is by current-limiting resistance R6, isolation capacitance C4, pull-up resistor R7, the 5th, the 6th, the 7th capacitor C 5, C6, C7, first inductance L 1 and variable capacitance diode D1 form, the control signal in the described external world of a termination of current-limiting resistance R6 wherein, the end of the described isolation capacitance C4 of another termination, the other end of isolation capacitance C4 connects the front end of described the 6th capacitor C 6, the rear end of the 6th capacitor C 6 connects the first input end of described wireless transmission circuit 1, the front end of described the 6th capacitor C 6 also connects the positive pole of described variable capacitance diode D1, the negative pole of this variable capacitance diode D1 connects an end of described the 5th capacitor C 5, the other end of the 5th capacitor C 5 connects second input of described wireless transmission circuit 1, after the other end of described the 5th capacitor C 5 is connected in series described first inductance L 1, be connected with the rear end of described the 6th capacitor C 6, the two ends of described first inductance L 1 also are connected to described the 7th capacitor C 7, the negative pole of described variable capacitance diode D1 also is connected with an end of the 4th resistance R 4, the other end of the 4th resistance R 4 is serially connected with an end of second capacitor C 2, the other end ground connection of this second capacitor C 2, the positive pole of described variable capacitance diode D1 also is serially connected with the 5th resistance R 5 ground connection, and the two ends of the 5th resistance R 5 also are connected to the 3rd capacitor C 3.
Shown in Fig. 3,4, described wireless transmission circuit 1 is a wireless sending module, and this wireless sending module is provided with the channel signal end, and this channel signal end is connected with sendaisle selector 10; Described wireless receiving circuit 2 is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with receive path selector 10 '.
Adopt sendaisle selector 10, can adopt multiple frequency channel to realize communication as required, avoid occurring between different transmitters, the receiver signal and disturb.
At the receiver of not producing as yet, production firm can directly replace infrared transmission module and infrared receiving module with wireless transmitter module and wireless receiving module in process of production.Becoming digital pulse signal after the processing of circuit of the control signal that remote controller key sends in remote control directly sends into and has the FM modulator, frequency synthesis, the large scale integrated circuit module of power amplification and emission function.With frequency-modulated wave form wireless transmission.Receiver is by having the reception mixing, frequency synthesis, and the large scale integrated circuit of FM demodulation function carries out after the demodulation output digital pulse signal to the frequency-modulated wave that receives and handles in the receiver other circuit, transmits and receives thereby reach remote signal.Reach the purpose of selecting TV signal at the equal may command receiver of chummery not equally.Above-mentioned this class has the modulation power amplifier at present, emission; Receive, mixing, the product of existing multiple different capacity different frequency is sold on the paired large scale integrated circuit module market of demodulation.When adopting which kind of specific product to produce multiple combination selection can be arranged.
Embodiment 2: also can provide the external hanging type conversion equipment at present commercially available receiver and subsidiary at random remote controller with infrared load mode transmission remote signal.
As Fig. 2,5, shown in 6, a kind of cable digital TV receiver remote signal radio wave conveyer, form by transmitter and receiver, wherein said transmitter is by infrared signal receiver 11, wireless transmission circuit 1 and transmitting antenna ANT1 form, described infrared signal receiver 11 receives extraneous infrared control signal, and change infrared control signal into input that the signal of telecommunication sends to described wireless transmission circuit 1, wireless transmission circuit 1 is a frequency modulation on pulse with electrical signal conversion, output by described wireless transmission circuit 1 sends to described transmitting antenna ANT1, and this transmitting antenna ANT1 is converted to the FM radio set ripple and sends to described receiver.
This receiver is made up of wireless receiving circuit 2, reception antenna ANT2 and Infrared Projector 12, wherein reception antenna ANT2 is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit 2, wireless receiving circuit 2 is the signal of telecommunication with the frequency modulation on pulse conversion of signals, the output of wireless receiving circuit 2 is exported this signal of telecommunication and is given described Infrared Projector 12, and Infrared Projector 12 is the output infrared signal outwards.
As shown in Figure 2, described wireless transmission circuit 1 is made up of FM modulator 3, power amplifier reflector 4 and transmission frequency synthesizer 5, wherein transmission frequency synthesizer 5 is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator 3 and power amplifier reflector 4 respectively, the input of described FM modulator 3 receives extraneous control signal, the output of FM modulator 3 sends modulation signal to described power amplifier reflector 4, and the output of this power amplifier reflector 4 connects described transmitting antenna ANT1;
As shown in Figure 5, described wireless receiving circuit 2 is made up of FM demodulator 6, receiving mixer 7 and receive frequency synthesizer 8, wherein receive frequency synthesizer 8 is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator 6 and receiving mixer 7 respectively, the input of this receiving mixer 7 connects described reception antenna ANT2, the output of receiving mixer 7 sends mixed frequency signal to described FM demodulator 6, and the output of this FM demodulator 6 is exported described cable digital TV control signal.
As Fig. 5, shown in 6, be connected with signal processing circuit 9 between the input of described infrared signal receiver 11 and wireless transmission circuit 1, this signal processing circuit 9 is by current-limiting resistance R6, isolation capacitance C4, pull-up resistor R7, the 5th, the 6th, the 7th capacitor C 5, C6, C7, first inductance L 1 and variable capacitance diode D1 form, the signal of telecommunication of the described infrared signal receiver 11 of a termination of current-limiting resistance R6 wherein, the end of the described isolation capacitance C4 of another termination, the other end of isolation capacitance C4 connects the front end of described the 6th capacitor C 6, the rear end of the 6th capacitor C 6 connects the first input end of described wireless transmission circuit 1, the front end of described the 6th capacitor C 6 also connects the positive pole of described variable capacitance diode D1, the negative pole of this variable capacitance diode D1 connects an end of described the 5th capacitor C 5, the other end of the 5th capacitor C 5 connects second input of described wireless transmission circuit 1, after the other end of described the 5th capacitor C 5 is connected in series described first inductance L 1, be connected with the rear end of described the 6th capacitor C 6, the two ends of described first inductance L 1 also are connected to described the 7th capacitor C 7, the negative pole of described variable capacitance diode D1 also is connected with an end of the 4th resistance R 4, the other end of the 4th resistance R 4 is serially connected with an end of second capacitor C 2, the other end ground connection of this second capacitor C 2, the positive pole of described variable capacitance diode D1 also is serially connected with the 5th resistance R 5 ground connection, and the two ends of the 5th resistance R 5 also are connected to the 3rd capacitor C 3.
As shown in Figure 6, described Infrared Projector 12 is made up of 555 oscillating circuits, triode and infrared transmitting tube D2, wherein the input of 555 oscillating circuits connects the output of described wireless receiving circuit 2, the input of 555 oscillating circuits connects the base stage of described triode, the grounded emitter of triode, collector electrode connects the negative pole of described infrared transmitting tube D2, and the positive pole of infrared transmitting tube D2 connects dc positive power.
Shown in Fig. 5,6, described wireless transmission circuit 1 is a wireless sending module, and this wireless sending module is provided with the channel signal end, and this channel signal end is connected with sendaisle selector 10; Described wireless receiving circuit 2 is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with receive path selector 10 '.
The model of wireless sending module is ET13X220, and the model of wireless receiving module is ET13X210.
As shown in Figure 7, also comprise bar shaped overcoat 13, have the bar shaped cavity in this bar shaped overcoat 13, one end opening of cavity, other end sealing, its blind end is equipped with described transmitting antenna ANT1, this blind end also is equipped with circuit board 14, be furnished with described infrared signal receiver 11 and wireless transmission circuit 1 on this circuit board 14, wherein infrared signal receiver 11 is towards the middle part of described cavity, the upper wall of described bar shaped overcoat 13 has the button window, and the lower wall of described bar shaped overcoat 13 has screwed hole, is set with screw 15 in the screwed hole.
Be embedded in the remote controller of finished product receiver at the cavity of bar shaped overcoat 13.Receiver apparatus is put near the set-top box, as shown in Figure 8: receiver is with infrared emission head alignment machine top box 16, the infrared receiving terminal of promptly former receiver box.The remote controller key that operation embeds in the bar shaped overcoat 13 sends infrared pulse signal, and the infrared remote receiver that this infrared signal is enclosed in transmitter together receives.The transmitting antenna ANT1 of transmitter sends the FM radio set ripple and gives receiver, and receiver is converted to infrared pulse signal and sends to set-top box.Reach the purpose of using the non-direct-view receiver control of remote controller within the specific limits.
Described wireless transmission circuit 1 and wireless receiving circuit 2 are existing mature technology, " communication products integrated circuit " as China Measuring Press's in September, 2005 publication, " single-chip microcomputer wlan transceiving integrated circuit principle and the application " that the People's Telecon Publishing House publishes in September, 2005, " the bluetooth hardware circuit " that publishing house of BJ University of Aeronautics ﹠ Astronautics publishes in August, 2005 etc. have all been described multiple wireless communication line.
Claims (9)
1. cable digital TV receiver remote signal radio wave conveyer, form by transmitter and receiver, it is characterized in that: described transmitter is made up of wireless transmission circuit (1) and transmitting antenna (ANT1), described wireless transmission circuit (1) is provided with signal input end and receives extraneous control signal, and control signal is converted to frequency modulation on pulse, output by described wireless transmission circuit (1) sends to described transmitting antenna (ANT1), this transmitting antenna (ANT1) is converted to the FM radio set ripple and sends to described receiver, this receiver is made up of wireless receiving circuit (2) and reception antenna (ANT2), wherein reception antenna (ANT2) is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit (2), wireless receiving circuit (2) is the cable digital TV control signal with the frequency modulation on pulse conversion of signals, and the output of wireless receiving circuit (2) is exported this cable digital TV control signal;
Described wireless transmission circuit (1) is made up of FM modulator (3), power amplifier reflector (4) and transmission frequency synthesizer (5), wherein transmission frequency synthesizer (5) is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator (3) and power amplifier reflector (4) respectively, the input of described FM modulator (3) receives extraneous control signal, the output of FM modulator (3) sends modulation signal to described power amplifier reflector (4), and the output of this power amplifier reflector (4) connects described transmitting antenna (ANT1);
Described wireless receiving circuit (2) is made up of FM demodulator (6), receiving mixer (7) and receive frequency synthesizer (8), wherein receive frequency synthesizer (8) is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator (6) and receiving mixer (7) respectively, the input of this receiving mixer (7) connects described reception antenna (ANT2), the output of receiving mixer (7) sends mixed frequency signal to described FM demodulator (6), and the output of this FM demodulator (6) is exported described cable digital TV control signal.
2. cable digital TV receiver remote signal radio wave conveyer according to claim 1, it is characterized in that: the input of described wireless transmission circuit (1) is connected with signal processing circuit (9), this signal processing circuit (9) is by current-limiting resistance (R6), isolation capacitance (C4), pull-up resistor (R7), the 5th, the 6th, the 7th electric capacity (C5, C6, C7), first inductance (L1) and variable capacitance diode (D1) are formed, the control signal in the described external world of a termination of current-limiting resistance (R6) wherein, one end of the described isolation capacitance of another termination (C4), the other end of isolation capacitance (C4) connects the front end of described the 6th electric capacity (C6), the rear end of the 6th electric capacity (C6) connects the first input end of described wireless transmission circuit (1), the front end of described the 6th electric capacity (C6) also connects the positive pole of described variable capacitance diode (D1), the negative pole of this variable capacitance diode (D1) connects an end of described the 5th electric capacity (C5), the other end of the 5th electric capacity (C5) connects second input of described wireless transmission circuit (1), after the other end of described the 5th electric capacity (C5) is connected in series described first inductance (L1), be connected with the rear end of described the 6th electric capacity (C6), the two ends of described first inductance (L1) also are connected to described the 7th electric capacity (C7), the negative pole of described variable capacitance diode (D1) also is connected with an end of the 4th resistance (R4), the other end of the 4th resistance (R4) is serially connected with an end of second electric capacity (C2), the other end ground connection of this second electric capacity (C2), the positive pole of described variable capacitance diode (D1) also is serially connected with the 5th resistance (R5) ground connection, and the two ends of the 5th resistance (R5) also are connected to the 3rd electric capacity (C3).
3. cable digital TV receiver remote signal radio wave conveyer according to claim 1, it is characterized in that: described wireless transmission circuit (1) is wireless sending module, this wireless sending module is provided with the channel signal end, and this channel signal end is connected with sendaisle selector (10); Described wireless receiving circuit (2) is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with receive path selector (10 ').
4. cable digital TV receiver remote signal radio wave conveyer, form by transmitter and receiver, it is characterized in that: described transmitter is by infrared signal receiver (11), wireless transmission circuit (1) and transmitting antenna (ANT1) are formed, described infrared signal receiver (11) receives extraneous infrared control signal, and change infrared control signal into input that the signal of telecommunication sends to described wireless transmission circuit (1), wireless transmission circuit (1) is a frequency modulation on pulse with electrical signal conversion, output by described wireless transmission circuit (1) sends to described transmitting antenna (ANT1), this transmitting antenna (ANT1) is converted to the FM radio set ripple and sends to described receiver, this receiver is by wireless receiving circuit (2), reception antenna (ANT2) and Infrared Projector (12) are formed, wherein reception antenna (ANT2) is converted into the frequency modulation on pulse signal after obtaining described FM radio set ripple, and send to the input of described wireless receiving circuit (2), wireless receiving circuit (2) is the signal of telecommunication with the frequency modulation on pulse conversion of signals, the output of wireless receiving circuit (2) is exported this signal of telecommunication and is given described Infrared Projector (12), and Infrared Projector (12) is outwards exported infrared signal.
5. cable digital TV receiver remote signal radio wave conveyer according to claim 4, it is characterized in that: described wireless transmission circuit (1) is by FM modulator (3), power amplifier reflector (4) and transmission frequency synthesizer (5) are formed, wherein transmission frequency synthesizer (5) is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM modulator (3) and power amplifier reflector (4) respectively, the input of described FM modulator (3) receives extraneous control signal, the output of FM modulator (3) sends modulation signal to described power amplifier reflector (4), and the output of this power amplifier reflector (4) connects described transmitting antenna (ANT1);
Described wireless receiving circuit (2) is made up of FM demodulator (6), receiving mixer (7) and receive frequency synthesizer (8), wherein receive frequency synthesizer (8) is provided with first, second output, the synthetic control signal of output frequency is given the frequency control terminal of described FM demodulator (6) and receiving mixer (7) respectively, the input of this receiving mixer (7) connects described reception antenna (ANT2), the output of receiving mixer (7) sends mixed frequency signal to described FM demodulator (6), and the output of this FM demodulator (6) is exported described cable digital TV control signal.
6. according to claim 4 or 5 described cable digital TV receiver remote signal radio wave conveyers, it is characterized in that: be connected with signal processing circuit (9) between the input of described infrared signal receiver (11) and wireless transmission circuit (1), this signal processing circuit (9) is by current-limiting resistance (R6), isolation capacitance (C4), pull-up resistor (R7), the 5th, the 6th, the 7th electric capacity (C5, C6, C7), first inductance (L1) and variable capacitance diode (D1) are formed, the signal of telecommunication of the described infrared signal receiver of a termination (11) of current-limiting resistance (R6) wherein, one end of the described isolation capacitance of another termination (C4), the other end of isolation capacitance (C4) connects the front end of described the 6th electric capacity (C6), the rear end of the 6th electric capacity (C6) connects the first input end of described wireless transmission circuit (1), the front end of described the 6th electric capacity (C6) also connects the positive pole of described variable capacitance diode (D1), the negative pole of this variable capacitance diode (D1) connects an end of described the 5th electric capacity (C5), the other end of the 5th electric capacity (C5) connects second input of described wireless transmission circuit (1), after the other end of described the 5th electric capacity (C5) is connected in series described first inductance (L1), be connected with the rear end of described the 6th electric capacity (C6), the two ends of described first inductance (L1) also are connected to described the 7th electric capacity (C7), the negative pole of described variable capacitance diode (D1) also is connected with an end of the 4th resistance (R4), the other end of the 4th resistance (R4) is serially connected with an end of second electric capacity (C2), the other end ground connection of this second electric capacity (C2), the positive pole of described variable capacitance diode (D1) also is serially connected with the 5th resistance (R5) ground connection, and the two ends of the 5th resistance (R5) also are connected to the 3rd electric capacity (C3).
7. according to claim 4 or 5 described cable digital TV receiver remote signal radio wave conveyers, it is characterized in that: described Infrared Projector (12) is made up of 555 oscillating circuits, triode and infrared transmitting tube (D2), wherein the input of 555 oscillating circuits connects the output of described wireless receiving circuit (2), the input of 555 oscillating circuits connects the base stage of described triode, the grounded emitter of triode, collector electrode connects the negative pole of described infrared transmitting tube (D2), and the positive pole of infrared transmitting tube (D2) connects dc positive power.
8. according to claim 4 or 5 described cable digital TV receiver remote signal radio wave conveyers, it is characterized in that: described wireless transmission circuit (1) is wireless sending module, this wireless sending module is provided with the channel signal end, and this channel signal end is connected with sendaisle selector (10); Described wireless receiving circuit (2) is a wireless receiving module, and this wireless receiving module is provided with the channel signal end, and this channel signal end is connected with receive path selector (10 ').
9. the cable digital TV receiver remote signal radio wave conveyer of stating according to claim 4, it is characterized in that: also comprise bar shaped overcoat (13), have the bar shaped cavity in this bar shaped overcoat (13), one end opening of cavity, other end sealing, its blind end is equipped with described transmitting antenna (ANT1), this blind end also is equipped with circuit board (14), be furnished with described infrared signal receiver (11) and wireless transmission circuit (1) on this circuit board (14), wherein infrared signal receiver (11) is towards the middle part of described cavity, the upper wall of described bar shaped overcoat (13) has the button window, the lower wall of described bar shaped overcoat (13) has screwed hole, is set with screw (15) in the screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201880733U CN201118740Y (en) | 2007-10-25 | 2007-10-25 | Radio wave transmission device for wired digital TV receiver remote control signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201880733U CN201118740Y (en) | 2007-10-25 | 2007-10-25 | Radio wave transmission device for wired digital TV receiver remote control signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118740Y true CN201118740Y (en) | 2008-09-17 |
Family
ID=39993338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201880733U Expired - Fee Related CN201118740Y (en) | 2007-10-25 | 2007-10-25 | Radio wave transmission device for wired digital TV receiver remote control signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201118740Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684588A (en) * | 2013-12-05 | 2014-03-26 | 京东方科技集团股份有限公司 | Infrared ray signal transmitting device and electronic equipment |
-
2007
- 2007-10-25 CN CNU2007201880733U patent/CN201118740Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684588A (en) * | 2013-12-05 | 2014-03-26 | 京东方科技集团股份有限公司 | Infrared ray signal transmitting device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101414405A (en) | Intelligent household control method | |
| CN201118740Y (en) | Radio wave transmission device for wired digital TV receiver remote control signal | |
| CN109067420A (en) | Wireless audio frequency transmission function USB interface mould group | |
| CN104714413A (en) | Intelligent home system based on ZigBee technique | |
| CN204462677U (en) | A kind of interactive voice intelligent home control system being installed on lamp affixed to the ceiling | |
| CN205883467U (en) | 2. 4G infrared study remote control circuit is changeed to privately owned agreement | |
| CN201018500Y (en) | Bluetooth wireless microphone | |
| CN203368660U (en) | Interactive digital television system | |
| CN202334780U (en) | Two-way wireless high-definition transceiver system | |
| CN201657105U (en) | Set top box extended system | |
| CN202231837U (en) | Wireless microphone | |
| CN203325200U (en) | Remote-control extension system | |
| CN202454065U (en) | Wireless remote controller device with function of wireless earphones | |
| CN201629807U (en) | Digital television receiving box and digital television control device | |
| CN202340031U (en) | Intelligent remote control socket | |
| CN201639687U (en) | Internet-connected television internet surfing system | |
| CN2676449Y (en) | Multifunctional remote controlled socket | |
| CN201867953U (en) | Intelligent home control system | |
| CN106814712A (en) | A kind of intelligent appliance control system based on Internet of Things | |
| CN101527075B (en) | Signal distinguishing remote controller and control method thereof | |
| CN204929138U (en) | Visual combination remote control system of multi -functional intelligence | |
| CN102810247A (en) | Infrared remote control module and remote control method thereof | |
| CN201029238Y (en) | Set-top box | |
| CN203351006U (en) | ZigBee RF4CE remote controller based on audio communication | |
| CN201515369U (en) | Universal synchronous infrared voice transmitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20111025 |