CN2788478Y - Remote-control type audio/video frequency information transferring device - Google Patents

Remote-control type audio/video frequency information transferring device Download PDF

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Publication number
CN2788478Y
CN2788478Y CNU2005200284334U CN200520028433U CN2788478Y CN 2788478 Y CN2788478 Y CN 2788478Y CN U2005200284334 U CNU2005200284334 U CN U2005200284334U CN 200520028433 U CN200520028433 U CN 200520028433U CN 2788478 Y CN2788478 Y CN 2788478Y
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triode
circuit
capacitor
output
audio
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Expired - Fee Related
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CNU2005200284334U
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Chinese (zh)
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王新民
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Individual
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Individual
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Abstract

The utility model provides a remote-control type audio-video information transmission device, which simultaneously collects and transmits audio and video information in a radio transmission system. The utility model is composed of a high-frequency oscillating circuit, a modulation output circuit for radio frequency amplification, an input modulation circuit for a video signal, an input modulation circuit for an audio signal, a remote-control receiving control circuit, and a stabilized-voltage power source. The output end of the high-frequency oscillating circuit is connected with the input end of the modulation output circuit for radio frequency amplification, and the output ends of the input modulation circuit for a video signal and the input modulation circuit for an audio signal are simultaneously connected with the control end for audio-video modulation of the modulation output circuit for radio frequency amplification. In addition, the output end of the remote-control receiving control circuit is connected with the input end of the stabilized-voltage power source; the output end of the stabilized-voltage power source is connected with the high frequency oscillating circuit, the input modulation circuit for a video signal and the input modulation circuit for an audio signal. The transmission device of the utility model has the advantages of compact equipment, strong maneuverability, convenient carrying, adjustable power, convenient arrangement, convenient operation, easy receiving, stable performance, high efficiency, energy saving, economy, utility, suitable popularization, etc.

Description

Distance type audio/video information transmitter
Technical field: the utility model relates to a kind of transmitting device that audio ﹠ video information is carried out synchronous acquisition and transmission in radio transmission system.
Background technology: along with the progress of the science and technology of the development of society, people require the demand of variation, just-in-time also more and more higher to various information.Therefore finishing obtaining immediately of information needed seems with instantaneous transmission and to be even more important.Transmitted for audio/video information in the past, great majority are to transmit with data network mode or satellite radio relay mode, a complete set of equipment not only complex structure, cost an arm and a leg (amateur unit can not purchase), troublesome poeration (each use all must be debugged again, can not move again during use), and require the operator must have suitable technical merit, so just must arrange special messenger's post.Make to popularize and be restricted.Therefore can't satisfy modern people to the audio/video information transmission requirements.
Summary of the invention: the utility model provides a kind of distance type audio/video information transmitter, mainly be solve at present for the device structure complexity that exists in the audio/video information transmission, cost an arm and a leg, troublesome poeration, problem such as be difficult to popularize, to satisfy modern people to the audio/video information transmission requirements.
Scheme of the present utility model is as described below: this utility model comprises remote controller, the LC oscillator, week in the frequency modulation, low pass filter, receiver, counter, relay, pressurizer, triode, diode, inductance coil, resistance, electric capacity, it is by high-frequency oscillating circuits is set, radio frequency amplifies modification output circuit, vision signal input modulation circuit, audio signal input modulation circuit, remote-control reception control circuit and stabilized voltage power supply, and high-frequency oscillating circuits output is inserted radio frequency amplify the modification output circuit input, and the output that vision signal is imported modulation circuit and audio signal input modulation circuit is inserted the audio frequency and video modulation control end that radio frequency amplifies modification output circuit simultaneously, in addition remote-control reception control circuit output is connected with the stabilized voltage power supply input, output end of stabilized voltage supply inserts high-frequency oscillating circuits respectively, the power end of vision signal input modulation circuit and audio signal input modulation circuit constitutes.
This utility model is owing to taked said structure, the output of particularly vision signal being imported modulation circuit and audio signal input modulation circuit inserts the audio frequency and video modulation control end that radio frequency amplifies modification output circuit simultaneously, come the supply power voltage that adds to radio-frequency (RF) power amplification is controlled with this, the power that makes high frequency carrier changes with the variation of video modulation signal.The radiofrequency signal carrier wave is become the amplitude-modulated signal that is loaded with pictorial information.And audio carrier signal is limited on the suitable amplitude corresponding to video carrier signal.Complete machine work is controlled by remote controller, have that equipment is small and exquisite, mobility strong, be convenient for carrying, adjustable power, be convenient to be provided with, easy and simple to handle, be easy to reception, stable performance, efficient energy-saving, economical and practical, be fit to advantages such as popularization.
Description of drawings: Fig. 1 is a distance type audio/video information transmitter electricity winding diagram.
Embodiment: by distance type audio/video information transmitter shown in Figure 1 is to amplify modification output circuit 2, vision signal input modulation circuit 3, audio signal input modulation circuit 4, remote-control reception control circuit 5 and stabilized voltage power supply 6 six parts by high-frequency oscillating circuits 1, radio frequency to constitute.And high-frequency oscillating circuits 1 output is inserted radio frequency amplify modification output circuit 2 inputs, and the output that vision signal is imported modulation circuit 3 and audio signal input modulation circuit 4 is inserted the audio frequency and video modulation control end that radio frequency amplifies modification output circuit 2 simultaneously, in addition remote-control reception control circuit 5 outputs are connected with stabilized voltage power supply 6 inputs, stabilized voltage power supply 6 outputs insert the power end of high-frequency oscillating circuits 1, vision signal input modulation circuit 3 and audio signal input modulation circuit 4 respectively.Wherein high-frequency oscillating circuits 1 is by triode Q 4, adjustable inductor L 4, and half variable capacitance C 7, C 9Form LC oscillator 7, at the triode Q of LC oscillator 7 4Base stage is provided with resistance R between the ground 10With capacitor C 10Parallel connection again with inductance coil L 2, capacitor C 8The branch circuit of series connection, and with inductance coil L 2, capacitor C 8Series connection node and stabilized voltage power supply 6 be connected to form.It is that output at high-frequency oscillating circuits 1 is through capacitor C that its radio frequency amplifies modification output circuit 2 11Meet triode Q 5Base stage, triode Q 5Base stage is provided with resistance R over the ground 11, at triode Q 5Collector electrode connects by inductance coil L 5And the half variable capacitance C at two ends 12, C 13The low pass filter of forming 8 is through inductance coil L 3With triode Q in the vision signal input modulation circuit 3 2Emitter be connected, and establish series capacitance C at low pass filter 8 outputs 14And resistance R 12Constitute impedance matching with transmitting antenna.This capacitor C 14With resistance R 1 2Series connection node is the output D of audio/video information high frequency carrier of the present utility model.Its vision signal input modulation circuit 3 is at video signal input terminal A resistance R to be set over the ground 6, and the diode D1 and the variable resistor R that connects 3, R 7After the parallel connection again with capacitor C 1Connect, with vision signal through variable resistor R 3, R 7Series connection node inserts triode Q 1Base stage is at triode Q 1Collector electrode is through series resistance R 1To stabilized voltage power supply 6, with resistance R 1Triode Q is inserted at two ends respectively 2Base stage and collector electrode, at triode Q 2Emitter and triode Q 1Series resistance R is set between the base stage 5, and by resistance R 5Be triode Q 1Provide offset operation voltage, at triode Q 2Emitter also is connected to capacitor C over the ground 6, make high-frequency signal through shunt capacitance C 6Go into ground.Simultaneously with triode Q 2Emitter and radio frequency amplify the inductance coil L of modification output circuit 2 3Be connected to form.Triode Q 2Emission very is subjected to voltage controling end (the being audio frequency and video modulation control end) C of audio frequency and video modulation.Its audio signal input modulation circuit 4 is between the power supply capacitor C to be set at audio signal input end B 2, resistance R 4, R 8, R 2Series arm, in resistance R 4With R 8And R 8With R 2Two series connection nodes on connect triode Q respectively 3Base stage, collector electrode are at triode Q 3Between base stage and the ground through capacitor C 4With magnetic core inductance coil L 1Inductance coil L in week 9 in the frequency modulation of forming 1-1, capacitor C 17, C 18Connect after the parallel connection, and with inductance coil L 1-1Centre cap meets triode Q 3Emitter, and with inductance coil L 1-2With series resistance R 9, capacitor C 5Be connected to the triode Q in the vision signal input modulation circuit 3 1Base stage.Simultaneously at triode Q 3Collector electrode extremely is connected in series capacitor C 3Constitute.Make entire circuit resonance on the 6.5MHZ frequency.And through inductive secondary L 1-2, resistance R 9, capacitor C 5The 6.5MHZ frequency modulated audio signal is added to triode Q 1On the base stage.Its remote-control reception control circuit 5 is to be provided with by relay 12 and diode D between positive supply and ground 4Parallel connection again with triode Q 6The branch circuit that is composed in series of c, e knot, and then are in parallel, and receiver 10 outputs are inserted counters 11 inputs, and counter 11 outputs are through series resistance R with receiver 10, counter 11 13To triode Q 6Base stage is in addition with relay 12 normal opened contacts 12 -1Being serially connected in stabilized voltage power supply (being three terminal regulator 13) 6 inputs constitutes.Its stabilized voltage power supply 6 is that input, the output two ends at three terminal regulator 13 are provided with electrochemical capacitor C over the ground 16, C 15, be provided with series diode D at three terminal regulator 13 zero setting ends 2, D 3Constitute.
The utility model is controlled by remote controller, after receiver 10 receives remote signal, output is delivered to counter 11 with pulse signal, and a high level and a low level, trigger triode Q when high level just appear in two pulse signal output ends of the every reception of these counter 11 inputs 6Conducting, its normal opened contact 12 of relay 12 coil electricities -1The adhesive entire circuit gets electric work.Triode Q during low level 6End relay 12 normal opened contacts 12 -1Be open-circuit condition, the entire circuit dead electricity quits work.Get the inductance coil L of electric back high-frequency oscillating circuits 1 2Energising, oscillator 7 produces vibration, tuning adjustable inductor L 4, and half variable capacitance C 7, C 9Just can produce different higher-order of oscillation frequencies.This vibration is by triode Q 4, resistance R 10, capacitor C 10And inductance coil L 2, capacitor C 8Make feedback network, be tuned on the frequency of general television set receiving channels.With this high-frequency carrier signal source as the audio/video information transmission.This high-frequency carrier signal inserts the input that radio frequency amplifies modification output circuit 2 simultaneously, for the audio/video information transmission provides high frequency carrier.The input A that imports modulation circuit 3 by vision signal when vision signal is added to resistance R 6On, through capacitor C 1Be coupled to diode D 1, diode D 1Lock-out pulse on the vision signal is passed through triode Q 1And resistance R 1, R 5The video modulation circuit of forming is clamped down on a fixing voltage, reduces and eliminates the anomalous effect that occurs in the picture.Adjustable resistance R 3Be used for adjusting the video amplitude that is sent to the transmitter modulation circuit, adjustable resistance R 7Be used for adjusting and be sent to transmitter brilliance control level.Television set still can be kept when no picture " blank screen " synchronously and the normal transmission of sound.This video contrast's modulation, modulated luminance signal and audio frequency 6.5MHZ FM signal are added in triode Q simultaneously 1Base stage is added to triode Q through its collector electrode after the amplification again 2Base stage makes triode Q 2Conducting is with triode Q 2The audio frequency and video modulation control end C that emitter joins obtains positive supply, realizes triode Q 2The control of emitter power supply output, and amplify the inductance coil L of modification output circuit 2 through radio frequency 3Be added in triode Q 5Collector electrode, triode Q 5Conducting will be exported by the high-frequency signal of audio frequency and video modulation through output D.When audio signal is input to audio signal input modulation circuit 4 from audio signal input end B, by capacitor C 2And resistance R 4Be coupled to triode Q 3Base stage, this voice modulation is by triode Q 3, capacitor C 3, C 4, C 17, C 18With by inductance coil L 1Week 9 has constituted the frequency of oscillation of 6.5MHZ in the frequency modulation of forming, triode Q when the audio signal input is arranged 3Bias voltage will change thereupon, the utility model is exactly to utilize this audio frequency to change the frequency modulation characteristic that bias voltage produced, and the 6.5MHZ audio sub-carrier is modulated, and makes it become the 6.5MHZ FM signal that high frequency changes with audio frequency.Pass through resistance R again 9, capacitor C 5Be added in the circuit that video modulates high frequency carrier.Just be added in the triode Q of vision signal input modulation circuit 3 1Base stage is still by triode Q 1Amplify triode Q 2Modulate control C point current potential, make the triode Q in the radio frequency amplification modification output circuit 2 5Output is controlled by audio-video signal, makes through triode Q 5Radio-frequency power after the amplification is along with sound, vision signal change synchronously.And through low pass filter 8 filtering, capacitor C 14, resistance R 12Carry out impedance matching with transmitting antenna,, contain the high frequency carrier of audio FM modulation again with the existing video amplitude-modulated signal of output maximal efficiency.

Claims (7)

1, a kind of distance type audio/video information transmitter comprises all (9), receiver (10), counter (11), relay (12), pressurizer (13), triode Q in remote controller, LC oscillator (7), low pass filter (8), the frequency modulation 1-Q 6, diode D 1-D 4, inductance coil L 1-L 5, resistance R 1-R 13, capacitor C 1-C 16It is characterized in that: this transmitter is by being provided with high-frequency oscillating circuits (1), radio frequency amplifies modification output circuit (2), vision signal input modulation circuit (3), audio signal input modulation circuit (4), remote-control reception control circuit (5) and stabilized voltage power supply (6), and high-frequency oscillating circuits (1) output is inserted radio frequency amplify modification output circuit (2) input, and the output that vision signal is imported modulation circuit (3) and audio signal input modulation circuit (4) is inserted the audio frequency and video modulation control end that radio frequency amplifies modification output circuit (2) simultaneously, in addition remote-control reception control circuit (5) output is connected with stabilized voltage power supply (6) input, stabilized voltage power supply (6) output inserts high-frequency oscillating circuits (1) respectively, the power end of vision signal input modulation circuit (3) and audio signal input modulation circuit (4) constitutes.
2, distance type audio/video information transmitter according to claim 1 is characterized in that: high-frequency oscillating circuits (1) is the triode Q at LC oscillator (7) 4Base stage is provided with resistance R between the ground 10With capacitor C 10Parallel connection again with inductance coil L 2, capacitor C 8The branch circuit of series connection, and with inductance coil L 2, capacitor C 8Series connection node and stabilized voltage power supply (6) be connected to form.
3, distance type audio/video information transmitter according to claim 1 is characterized in that: it is that output at high-frequency oscillating circuits (1) is through capacitor C that radio frequency amplifies modification output circuit (2) 11Meet triode Q 5Base stage, triode Q 5Base stage is provided with resistance R over the ground 11, at triode Q 5Collector electrode connects low pass filter (8) input and inductance coil L 3, and establish the capacitor C of series connection at low pass filter (8) with exporting to 14And resistance R 12Constitute.
4, distance type audio/video information transmitter according to claim 1 is characterized in that: vision signal input modulation circuit (3) is at video signal input terminal resistance R to be set over the ground 6, and the diode D1 and the variable resistor R that connects 3, R 7Be in parallel again and capacitor C 1Connect, with variable resistor R 3, R 7Series connection node inserts triode Q 1Base stage is at triode Q 1Collector electrode is through series resistance R 1To stabilized voltage power supply (6), with resistance R 1Triode Q is inserted at two ends respectively 2Base stage and collector electrode, at triode Q 2Emitter and triode Q 1Series resistance R is set between the base stage 5, at triode Q 2Emitter also is connected to capacitor C over the ground 6, simultaneously with triode Q 2Emitter and radio frequency amplify the inductance coil L of modification output circuit 2 3Be connected to form.
5, distance type audio/video information transmitter according to claim 1 is characterized in that: audio signal input modulation circuit (4) is between the power supply capacitor C to be set at audio signal input end 2, resistance R 4, R 8, R 2Series arm, in resistance R 4With R 8And R 8With R 2Two series connection nodes on connect triode Q respectively 3Base stage, collector electrode are at triode Q 3Be provided with by inductance coil L between base stage and the ground 1Inductance coil L in week (9) in the frequency modulation of forming 1-1, capacitor C 17, C 18Back in parallel and capacitor C 4The branch road of series connection is also with inductance coil L 1-1Centre cap meets triode Q 3Emitter, and with inductance coil L 1-2With series resistance R 9, capacitor C 5Be connected to the triode Q in the vision signal input modulation circuit (3) 1Base stage, and at triode Q 3Collector electrode extremely is connected in series capacitor C 3Constitute.
6, distance type audio/video information transmitter according to claim 1 is characterized in that: remote-control reception control circuit (5) is to be provided with by relay (12) and diode D between positive supply and ground 4Parallel connection again with triode Q 6The branch circuit that is composed in series of c, e knot be in parallel with receiver (10), counter (11) again, receiver (10) output is inserted counter (11) input, and with counter (11) output through series resistance R 13To triode Q 6Base stage is with relay (12) normal opened contact 12 -1Being serially connected in stabilized voltage power supply (6) input constitutes.
7, distance type audio/video information transmitter according to claim 1 is characterized in that: stabilized voltage power supply (6) is that input, the output two ends in three terminal regulator (13) are provided with electrochemical capacitor C over the ground 16, C 15, be provided with diode in series D at three terminal regulator (13) zero setting end 2, D 3Constitute.
CNU2005200284334U 2005-03-24 2005-03-24 Remote-control type audio/video frequency information transferring device Expired - Fee Related CN2788478Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2005200284334U CN2788478Y (en) 2005-03-24 2005-03-24 Remote-control type audio/video frequency information transferring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2005200284334U CN2788478Y (en) 2005-03-24 2005-03-24 Remote-control type audio/video frequency information transferring device

Publications (1)

Publication Number Publication Date
CN2788478Y true CN2788478Y (en) 2006-06-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2005200284334U Expired - Fee Related CN2788478Y (en) 2005-03-24 2005-03-24 Remote-control type audio/video frequency information transferring device

Country Status (1)

Country Link
CN (1) CN2788478Y (en)

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