CN2307409Y

CN2307409Y - Household video or audio frequency converter

Info

Publication number: CN2307409Y
Application number: CN 97224803
Authority: CN
Inventors: 孟焕敖
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-20
Filing date: 1997-08-20
Publication date: 1999-02-10
Anticipated expiration: 2007-08-20

Abstract

The utility model discloses an acoustic image electric appliance connecting device, namely a household video or audio frequency converter. The utility model adopts an M8804 micro computer chip as a control host. The utility model is connected with a number key matrix circuit, an electronic switch circuit which is connected with an M8804 output foot, and a video or audio frequency socket which is connected with the electronic switch circuit. The utility model can complete the connection between one electric appliance and one TV by pressing a switch.

Description

Family expenses are looked, audio converter

The utility model relates to a kind of audio and video appliances jockey, promptly family expenses look, audio converter.

The audio and video appliances of Modern Family increases gradually, as common video tape recorder, VCD video disc player, game machine arranged, the popular computer of multimedia etc., and these electrical equipment common features all need to make display with television set, and each the use is connected with television set respectively, therefore, when so Duo electrical equipment is connected with TV, numerous attachment plug is dialled slotting very inconvenient repeatedly, not only makes the jack wearing and tearing, and makes troubles to use.

As long as this evil is to provide a kind of corresponding button that clicks at above-mentioned deficiency with novel purpose, just easily conversion TV sets look with the family expenses that other any audio and video appliances are connected, audio converter.

Technical solution of the present utility model is achieved in that family expenses are looked, audio converter comprises a housing, power supply is arranged on it, receive head.The IC1 microcomputer chip is arranged as main control system on the master control borad in it, also be connected with the numerical key matrix circuit on its master control borad, the electronic switching circuit that is connected with IC1 (M8804) output pin and being used for of being connected with electronic switching circuit, each audio and video appliances pegged graft looks, audio jack.Its operation principle is: with each audio and video appliances look, corresponding on audio connection and this device looks, audio jack is pegged graft, and goes up switch AN1-AN8 by it respectively, can realize that energized and each audio and video appliances are respectively or combination and TV connection, realization translation function.

Advantage of the present utility model is once to concentrate with good effect the family expenses audio and video appliances is connected with TV by this device, only need click each corresponding button during use, can finish conversion of signals, enters user mode.And now connect when using need not resembling habitually in the past, the time spent does not dial slottingly, promptly reduces the jack wearing and tearing, keeps good connection effect, can accomplish that again everybody can use, and it is convenient especially to use.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model housing Facad structure sketch;

Fig. 2 is the utility model housing reverse side structure diagram;

Fig. 3 is the utility model circuit theory diagrams.

Referring to Fig. 1, family expenses are looked, power supply indicator 1 is arranged on the audio converter housing front, receive 2, switch 3, the Light-Emitting Diode 4 that shows each family expenses audio and video appliances operating state and eight buttons, switch (AN1 AN8) 5.

Referring to Fig. 2, be placed with on the housing reverse side for looking of pegging graft of television set, VCD, video tape recorder, sound equipment, audio jack 6,7,8,9 and standby jack 10.

Referring to Fig. 3, the main woman's persona of IC1 (M8804) microcomputer chip control has the numerical key matrix circuit, and shift knob AN1-AN8 is arranged on it, and electronic switching circuit is connected with the

output pin

15,16,17,18,19,20,21 of IC1.Electronic switching circuit is made up of the relay J 1-J6 of interface circuit VT1-VT12 and execution convert task, be connected with LED 1 LED8 of display control state between two circuit, relay J 1 J6 is connected by looking of pegging graft of its contact and each audio and video appliances, audio jack.Operation principle is as above:

One, circuit theory:

1, start, the 14 pin output high level of (or pressing AN1) IC1, the VT1 conducting, LED1 is bright, as the start or the indication that resets.

2, press AN2,15 pin of IC1 are high level, and VT2 is conducting, and LED2 is bright, J2 work, and its contact adhesive, the vision signal of VCD video disc player is by J2-1, connect with the video input of television set.Audio signal is connected by the back contact of J2-2, J2-3 and J1 and the audio frequency input of television set, can play the VCD program.

3, press AN3,16 pin of IC1 are high level, the VT3 conducting, and LED3 is bright, J3 work, its contact adhesive, the vision signal of video tape recorder is connected by J3-1 and television set, and audio signal is connected by back contact and the TV of J3-2, J3-3 and J1.Can play video program.

4, press AN4,17 pin of IC1 are high level, the VT4 conducting, and LED4 is bright, J1 work, its contact adhesive.Simultaneously, the VT9 conducting, LED2 is bright, J2 work, its contact adhesive, VT9 conducting simultaneously, LED2 is bright, J2 work, its contact adhesive, the vision signal of VCD video disc player is connected by J2-1 and television video input, and audio signal is by the normal off point (at this moment J1 is an attracting state) and the R of sound equipment, 1. sound channel input connection of J2-2, J2-3 and J1.Use for singing clamping OK song.

5, press AN5,18 pin of IC1 are high level, the VT5 conducting, and LED4 is bright, J1 work, its contact adhesive.Simultaneously, the VT10 conducting, LED3 is bright, J3 work, video recorder and television set are connected, and audio frequency and sound equipment are connected, and sing clamping OK song and use.Principle is with the 4th.

6, press AN6,19 pin of IC1 are high level, the VT6 conducting, and LED6 is bright, J5 work, its contact adhesive, the looking of VCD video disc player, audio frequency output are connected with the video tape recorder input.Simultaneously, the VT11 conducting, LED3 is bright, J3 work, its contact adhesive, video tape recorder output is connected with television set.Can record the Kara OK songs of oneself singing, perhaps record the VCD program.

7, press AN7,20 pin of IC1 are high level, the VT7 conducting, and LED7 is bright, J6 work, its contact adhesive, the looking of standby video tape recorder, audio frequency output are connected with the input of this video tape recorder.Simultaneously, the VT12 conducting, LED3 is bright, J3 work, its contact adhesive, output of this video tape recorder and television set input are connected, and can monitor the quality situation of duplicating video program at any time, and television set does not at this moment influence watches other programs.This state is mainly used for duplicating video program.

8, press AN8,21 pin of IC1 are high level, the VT8 conducting, and LED8 is bright, J4 work, its contact adhesive, the output of this state game machine, popular computer learning machine is connected from the input of spare interface and television set, for study and amusement.Each state is by numerical key on this machine or remote controller control.

Two, make

1, components and parts and installation: IC1 selects eight passage remote controller master control borads of early stage production for use, keep its power supply, receive head, numerical key matrix circuit, V1-V8 interface circuit, other elements need not under all welding, former V1-V8 is VT1-VT8, VT9-VT12 is installed in the appropriate location of master control borad by the accompanying drawing circuit, connects with line.

The corresponding upper and lower position of panel that is installed in respectively of LED1-LED8 with AN1-AN8.The LED5 sky is established, mainly for corresponding one by one with key switch.AN1-AN8 selects the channel switch of old colour TV.

J1-N6 selects sealed type magnetic to protect and relay, is fixed on the vacancy of master control borad, is connected with each jack with shielding conductor.Jack selects the lotus flower jack, and the fixed order of pressing accompanying drawing is on bonnet.Receive the upper right corner that head is installed in panel.

Three, use: video, the audio connection of each electrical equipment are inserted in corresponding jack, open the converter power switch, get final product work by corresponding button.

Claims

Family expenses look, audio converter, comprise power supply, receive head, it is characterized in that it is a main control system with IC1 (M8884) microcomputer chip, also be connected with the numerical key matrix circuit on its master control borad, the electronic switching circuit that is connected with the IC1 output pin and being used for of being connected with electronic switching circuit, each audio and video appliances pegged graft looks, audio jack.
According to the described family expenses of claim 1 look, audio converter, it is characterized in that described electronic switching circuit is made up of interface circuit and the relay J 1-J6 that carries out convert task, be connected by the looking of relay contact and the grafting of each audio and video appliances, audio jack.
According to claim 1 or 2 described family expenses look, audio converter, it is characterized in that selecting for use of each audio and video equipment by the control of the numeral key on this machine or remote controller.