CN2208265Y

CN2208265Y - Audio-video tape recorder

Info

Publication number: CN2208265Y
Application number: CN 95209148
Authority: CN
Inventors: 陈志雄; 林庆彤
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-28
Filing date: 1995-03-28
Publication date: 1995-09-20
Anticipated expiration: 2005-03-28

Abstract

The utility model provides an audio-video tape recorder, which is formed by that the circuit of an existing radio-receiver recorder is added with an image processor which is composed of a micro processing system and a power amplifying unit. Audio and video information signals output from a main board of the radio-receiver recorder are respectively input to the micro processing system, and finally audio signals and video signals output from the power amplifying unit are directly connected to a TV. The utility model with easy production and cheap price can be used for simply reforming the existing radio-receiver recorder.

Description

Audio-video tape recorder

The utility model relates to a kind of radio cassette player of acoustic image tape.

The sound equipment radio cassette player of people's use at present has only single acoustic function, can not handle picture signal.For the acoustic image tape, common radio cassette player can't carry out signal Processing to it, can not utilize common radio cassette player to make the conversion work of picture signal.Want the acoustic image tape is carried out signal Processing, sound, release as reflecting, must use complicated, expensive equipment, this is for average family and broad masses, is difficulty comparatively.

The purpose of this utility model provides simple, as can to include an acoustic image tape device of including.

The technical solution of the utility model is such: in common sound equipment radio cassette player circuit, add an image processor, so just constituted the acoustic image tape recorder.

Image processor is made up of microprocessing systems (being central processing system) and power amplification unit.Microprocessing systems comprises central processing unit chip IC 1, data-carrier store chip IC 2, functional switch chip IC 3, D/A converter chip IC 4 and IC5.IC4, IC5 are connected and carry out two-stage D/A conversion.Power amplification unit is that sound signal and the image information signal that power amplifier chip IC 6 is exported by the radio cassette player mainboard is input to respectively in the central processing unit chip IC 1, and sound signal outputs to power amplifier chip IC 6 and amplifies output after the IC1 modulation treatment.Image information signal is after IC1 decoding and recoding, and newly organized data output to D/A converter chip IC 4 on the one hand, through IC4, IC5 two-stage D/A conversion, carries out decoding processing, and output is back to IC1 becomes Video 1(video 1) signal; Output to data-carrier store chip IC 2 from IC1 on the other hand and carry out data search, still sending IC1 back to by former data line becomes Video 2 signals.Video 1 outputs to IC6 from IC1 after Video 2 control, amplify back output, the Video(video of IC6 output) signal and Audio(audio frequency) signal inserts televisor and can show program on the picture tape of speaking.

Because just adding an image processor in existing radio cassette player circuit, the utility model just become the device that can include the acoustic image tape, therefore very convenient and easy, easy to manufacture, cheap.Both can directly produce the acoustic image tape recorder with circuit theory of the present utility model, also can transform existing radio cassette player very simply, utilize existing equipment carry out sound, as reflect and put.

Introduce structure of the present utility model and principle below in conjunction with accompanying drawing.

Fig. 1 is the work synoptic diagram that acoustic image tape recorder and televisor link together;

Fig. 2 is the functional-block diagram of image processor;

Fig. 3 is the wiring diagram of image processor.

Among the figure: 1-acoustic image tape recorder; The 2-televisor; The microprocessing systems of 3-image processor; The power amplification unit of 4-image processor.

As can be seen from Figure 1, be input in the television set 2 after radiofrequency signal is directly imported or be modulated into to audio frequency, the vision signal of audio-video tape recorder 1 output, can finish the broadcast work of acoustic image.

In common radio cassette player circuit, adding an image processor just can become audio-video tape recorder. The formation of image processor is divided into two parts: microprocessing systems 3 and power amplification unit 4. Microprocessing systems 3 is by central processor core IC1, Data storage chip IC 2, power switch chip IC 3, D/A converter chip IC 4, IC5 form. Power amplification unit 4 is power amplifier chip IC 6.

Describe the utility model in detail with specific embodiment below.

Fig. 3 is the concrete wiring diagram of image processor in the utility model.In Fig. 3, the model of central processing unit chip IC 1 is GH3838, and data-carrier store chip IC 2 is GH5276, and functional switch chip IC 3 is GH1682, D/A converter chip IC 4, and IC5 is GH5256, power amplifier chip IC 6 is GH311.

When working in the acoustic image tape recorder 1 that the acoustic image tape is packed into, sound signal V1 that exports on radio cassette player 1 mainboard and image information signal V2 are input in the image processor microprocessing systems 3, signal enters central processing unit chip IC 1, sound signal V1 is by the 4 pin input of IC1, after IC1 carries out modulation treatment, output to 3 pin of power amplifier chip IC 6 by 31 pin, after IC6 amplifies, by the output of 4 pin, as the Audio(audio frequency) signal.Image information signal V2 is from the input of 2 pin of IC1, recompile again after deciphering in IC1.Newly organized data output to the 3-10 pin of D/A converter chip IC 4 on the one hand from 21-26 pin, 18 and 19 pin, at this moment IC4 links to each other with IC5, data are carried out two-stage D/A conversion make decoding processing, become simulating signal and become the Video1 signal from 27,28,29 pin that 11,12,13 pin of IC5 output to IC1 respectively; On the other hand from IC1 3, the 5-11 pin 2-9 pin that outputs to data-carrier store chip IC 2 carries out data search, still sends IC1 back to by data line after having searched for, and becomes Video 2 signals.In IC1 inside, Video1 is outputed to 2 pin of IC6 by 30 pin after Video 2 controls, exported as the Video signal by 5 pin after amplifying.The effect of functional switch chip IC 3 is to make the gating signal of each chip to use.The Audio and the Video signal of IC6 output can be delivered directly to televisor, also can be modulated into radiofrequency signal and insert televisor, are demonstrating recorded program, image or literal on the acoustic image tape on the video screen.

Utilize principle of the present utility model, at present all sound-track engraving apparatuss, learning machine, portable radio cassette player, common radio cassette player, sound equipment, software, video equipment, phone radio cassette player reduction apparatus simply can be transformed, be formed visual acoustic image tape receiving and recording equipment.

Claims

1, a kind of acoustic image tape recorder, form by sound equipment radio cassette player and image processor, it is characterized in that: described image processor comprises a microprocessing systems (3) and a power amplification unit (4), microprocessing systems (3) is by central processing unit chip IC 1, data-carrier store chip IC 2, functional switch chip IC 3, D/A converter chip IC 4, IC5 forms, power amplification unit (4) is a power amplifier chip IC 6, the central processing unit chip IC 1 that the sound signal of radio cassette player mainboard output and image information signal insert microprocessing systems (3) respectively, the sound signal of modulation is from IC1 access power amplifier chip IC6, image information signal one side and D/A converter chip IC 4 behind IC1 decoding and recompile are joined, IC4, IC5 is a two-stage D/A converter chip, and decoded image information signal is connected to IC1 again from IC5 becomes the Video1 signal; Join with data-carrier store chip IC 2 on the other hand, taking back IC1 by former data line again becomes the Video2 signal, and the Video signal is received on the IC6 from IC1, and Audio signal and Video signal after the amplification pick out from IC6.

2, radio cassette player according to claim 1 is characterized in that: sound signal V1 is connected with 4 pin of central processing unit chip IC 1, and image information signal V2 is connected with 2 pin of IC1.

3, radio cassette player according to claim 1 and 2 is characterized in that: sound signal is picked out by 4 pin after the 3 pin amplification by 31 pin access power amplifier chip IC6 after the IC1 modulation treatment.

4, radio cassette player according to claim 1 and 2, it is characterized in that: image information signal in IC1 through decoding, behind the recompile on the one hand the 3-10 pin from 21-26,18,19 pin and D/A converter chip IC 4 join, on the other hand from IC1 3, the 2-9 pin of 5-11 pin and data-carrier store chip IC 2 joins, vision signal is received 2 pin of IC6 by 30 pin of IC1, amplifies the back and is picked out by 5 pin.