CN2318774Y

CN2318774Y - Infrared remote controlled stretch device

Info

Publication number: CN2318774Y
Application number: CN97248456U
Authority: CN
Inventors: 陈修玄
Original assignee: AILEITE ELECTRONIC Co Ltd ZHUHAI CITY
Current assignee: AILEITE ELECTRONIC Co Ltd ZHUHAI CITY
Priority date: 1997-11-12
Filing date: 1997-11-12
Publication date: 1999-05-12
Anticipated expiration: 2007-11-12

Abstract

The utility model relates to an infrared remote-control stretching device which is composed of an infrared receiving and transmitting device, a penetrating adapter, a coupler, an infrared transmitter and a power supplier. When a remote controller is held by hands to carry out remote-control operation, the infrared receiving and transmitting device installed on the terminal of a television receives an infrared remote-control signal and then penetrates the remote signal into a converter, the remote-control signal is transmitted to the remote coupler and the infrared transmitter through a coaxial cable of a network, and the coaxial cable is composed of the terminal of the television and a television signal source device; after the remote-control signal transmitted by the infrared transmitter is received by the television signal source device, the converted program of the television signal source is transmitted back to the remote television via the coaxial cable of the original network, therefore the utility model achieves remote control for the television signal source device.

Description

A kind of infra-red remote control extension apparatus

The utility model belongs to the image communication class, relates in particular to a kind of infra-red remote control extension apparatus.

At present, TV signal source devices such as satellite television receiver, video recorder, VCD machine all are furnished with remote controller separately, but these remote controllers generally can only use in the spatial dimensions of tens degree, and the coverage of remote control is short, generally has only 3～8 meters.Television set in the not chummery of the different floors of same resident family is received on the TV signal source device by coaxial cable, and this moment, the spectator in room can't carry out the remote control channel selection to above-mentioned TV signal source device with prior remote controller.

The purpose of this utility model is exactly in order to address the above problem, and infrared remote control signal can be transmitted by cable and provide a kind of, reaches the infra-red remote control extension apparatus of long-distance remote control motor signal source equipment purpose.

A kind of infra-red remote control extension apparatus, it is characterized in that receiving conveyer, injection adapter, coupler, infrared transmitter and power supply unit by infrared ray forms, power supply unit receives the conveyer power supply to infrared ray, infrared ray receives conveyer the remote signal of receiving is sent into the injection transducer, the injection transducer send transmission cable with remote signal, after coupler is sent into infrared transmitter.

When television set terminal hand-held remote controller carries out straighforward operation, after the infrared ray that is installed in the television set terminal receives the infrared remote-controlled signal that conveyer receives the hand-held remote controller emission, convert this remote signal to current signal and send into the injection transducer, and utilize television set terminal and TV signal source device to form the coaxial cable of network, this remote signal is sent into the coupler and the infrared transmitter in a distant place, after the remote signal that infrared transmitter is sent is received by the TV signal source device, TV signal source conversion program returns television set to a distant place through the coaxial cable of legacy network, thereby has realized Remote TV signal source device.

Fig. 1 is the utility model theory diagram;

Fig. 2 is that the utility model middle infrared (Mid-IR) receives transmitter circuit figure;

Fig. 3 is injection transducer in the utility model, coupler, infrared transmitter circuit theory diagrams.

Describe in detail below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model is made up of infrared ray reception conveyer 1, injection adapter 2, coupler 3, infrared transmitter 4 and power supply unit 5.

As shown in Figure 2, infrared receiver tube IR warp+12VDC and transistor Q1 are added with the working bias voltage of 5V, the IR pipe receives the infrared light irradiation conducting of hand-held remote controller emission, the photoelectric current that produces inserts 3 pin of (LE351) IC1 and through amplifying, Q2 penetrates 4 pin that insert (NE555) IC2 with output, drives timebase voltage controller IC 2, is about on the carrier wave that control signal is modulated to 40KHZ the 3 pin output by IC2, the low-frequency current of output at first flows through LED, as the luminous indication that has received signal.

As shown in Figure 3, the injection transducer of remote signal through LED through mainly forming by low-pass filtering LPF, send into coaxial cable AB, enter coupler again, be transferred at last and be connected in two-way infrared transmitter LED1 or the LED2 that TV signal source puts and launch, as if emission light is directly aimed at the infrared reception window of satellite television receiver SAT or VCD machine.Because the effect of capacitance C and high pass filter HPF, low-frequency current can not enter satellite television receiver SAT or VCD machine.

SAT changes program after receiving the signal of LED1 or LED2 emission, sends radiofrequency signal RF, because controlling of L can not enter LED1, LED2, C is to high frequency short circuit, so the RF signal passes to the TV input port of transmission remote signal through cable BA; In like manner, because the effect of LPF, RF can not enter NE555 through LED.Between injection transducer and coupler, can connect corresponding distributor as required, be used to realize multiplexing, can realize that a plurality of rooms control same TV signal source device.

This device adopts the remote controller firing order of former receiving equipment, handled easily by a coaxial wire simultaneously transmitting television signals and remote signal; Like according to difference, press the button of remote controller, panel just has a red colored lamp bright before infrared ray receives conveyer, the infrared ray that indication has been accepted to send instructs, can be in place away from the TV signal source apparatus, arbitrarily remote control receives the program of different video, and the colorful life of horn of plenty provides bigger convenience.

Claims

1, a kind of infra-red remote control extension apparatus, it is characterized in that receiving conveyer, injection adapter, coupler, infrared transmitter and power supply unit by infrared ray forms, power supply unit receives the conveyer power supply to infrared ray, infrared ray receives conveyer the remote signal of receiving is sent into the injection transducer, the injection transducer send transmission cable with remote signal, after coupler is sent into infrared transmitter.

2, infra-red remote control extension apparatus as claimed in claim 1, it is characterized in that infrared ray receives the working bias voltage that infrared receiver tube IR warp+12VDC in the conveyer and transistor Q1 are added with 5V, IR pipe receives that the photoelectric current that produces after the infrared light irradiation conducting of hand-held remote controller emission inserts 3 pin of IC1 and through amplifying, Q2 penetrates 4 pin that insert IC2 with output, the control signal that is modulated on the 40KHZ carrier wave is exported by 3 pin of IC2, and the low-frequency current of output flows through as the luminous indication LED that has received signal.