CN2177987Y - Mix-recorder for cassette recording tape - Google Patents

Abstract

The utility model relates to a box type recording tape mixed recording device and is composed of a microcomputer, a four orbital path logical selecting reviewing function card reproducing computer core, a double sound path recording machine and a data information writing card. The mixed recording device utilizes the microcomputer to control the writing card and the reproducing computer core and the double sound path recording machine records the speech information and the data information on the different magnetic recording orbital paths of a recording tape at the same time. The box type recording tape recorded by the box type recording tape mixed recording device has low cost, easy production and wide popularity.

Description

Mix-recorder for cassette recording tape

The utility model relates to a kind of audiotape record device, particularly a kind of cassette tape voice messaging and data message synchronized mixes record device.

The cassette tape of present recording voice message simultaneously and data message, its voice-and-data is recorded in respectively on the different magnetic recording tracks, adopt the two-channel cassette recorder to record this tape, the recording to export by loudspeaker of natural-sounding signal monitored, and data message is the digital signal after the coded modulation, can't monitor by people's ear, make the synchronized mixes of voice messaging and data message record very difficulty.

Four track logics select diplacusis function cassette player core to control its action by the power on/off of motor and the power on/off of two solenoids, can move by the playback that computing machine is controlled movement by control circuit, but four track logics select diplacusis function cassette player core only can playback can not be used for recording.

The purpose of this utility model is at above-mentioned deficiency, proposes a kind of cassette tape and dubs device, and it can be with data message and voice messaging synchronous recording on cassette tape, and control circuit can be controlled the output of voice and the output of data as required.

The utility model selects diplacusis function cassette player core, dual track recorder and data message to write card by microcomputer, four track logics to form; Write between card and the microcomputer and link to each other by bus, microcomputer send order and data output to by the I/O port and write on the card, write card and pass through D/A converter, the pulsating wave behind the coding is modulated into the sound channel that sine wave signal is delivered to dual track recorder according to the order and the data of microcomputer.Writing of data message is under control of microcomputer, realized by the recorded audio signals level variation that writes the card control sound-track engraving apparatus.

Write card and comprise processor, I/O port control circuit, memory under program circuit, data memory circuit and D/A change-over circuit;

Z80-CPU(U1 in the processor) data line meets memory under program 2716(U4), data memory 6116(U3), its output termination D/A change-over circuit DAC0832(U2);

I/O port controlling electrical equipment GAL16V8(U7) another a termination register 74LS374(U9 termination Z80-CPU(U1));

Memory under program 2716(4) link to each other by the I/O bus with microcomputer, the other end and U1 join;

D/A change-over circuit DAC0832(U2) meets U1, U2 output termination transport and placing device U8A, the input port of the data-track of U8A output termination dual track recorder.

Now with reference to the accompanying drawings the utility model is further described:

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is the electrical schematic diagram that the utility model writes card.

The utility model comprises that microcomputer, four track logics select diplacusis function cassette player core, dual track recorder, data message to write card.Place four track logics to select diplacusis function cassette player core the cassette tape of prerecording voice messaging, the cassette tape of prerecording voice messaging is adjusted to the section start that needs mixing to record, select the playback of diplacusis function cassette player core by system controlled by computer four track logics, voice messaging is delivered to a sound channel of dual track recorder, microcomputer issues commands to and writes card simultaneously, data message outputed to write card, deliver to another sound channel of dual track recorder by writing the digital signal of card after with coded modulation, by dual track recorder with voice messaging and data message synchronous recording on cassette tape.

As shown in Figure 2, be merged with Fig. 2 B two parts by Fig. 2 A, Fig. 2 B map interlinking 2A writes card and is made up of six parts:

(1) for writing Card processor, by Z80-CPU(U1), 74LS04(U5), electric capacity, crystal oscillator forms, and is the control core of this card; The program code of memory under program U4, data memory U3 and data are sent 7-10 pin and the 12-15 pin of U1, U1 produces the Wave data signal and send D/A change-over circuit DAC0832(U2) 4-7 pin and 13-16 pin, be responsible for receiving microcomputer order and the required signal waveform of control D/A transducer generation, write tape;

(2) be the I/O port control circuit, by GAL16V8(U7) form, connect the 6-9 pin decoding of U7 by the 19-22 pin of U1, produce a RDATA signal by 17 pin of U7 again and send register 74LS374(U9) 1 pin, be used to select the suitable I/O of microcomputer to originally sticking into line operate;

(3) be the memory under program circuit, by EPROM2716(U4) form, comprise the waveform generator program of this card, communicate program etc. with microcomputer, by CPU(U1) the control program code read;

(4) be data memory electrical equipment, by 6116SRAM(U3) form, deposit the data that write to tape, by CPU(U1) control data writes, reads.

(5) be the D/A circuit, by DAC0832(U2), transport and placing device (U8A) forms, the data-switching that it sends CPU here becomes the sine wave signal of simulation, by CPU(U1) Wave data is write U2 through the data line of U1 do the D/A conversion, U8A becomes the current signal of U2 output into voltage signal, exports dual track recorder to by 1 pin of U8A.

(6) be the peripheral decoding scheme of Z80-CPU, produce EPROM(U4) and chip selection signal SRAM6116(U3), 19 pin generation ROM sheet choosing by U7 controls signal to U4 respectively, and 18 pin of U7 produce RAM sheet selected control system signal and give U3, and the read data control signal of 17 pin of U7 is given 1 pin of U9.

Dub implementation procedure:

(1), at first, artificial audition is determined the time interval of the various control informations of package program, and time data is deposited in microcomputer;

(2), microcomputer is opened four track logics and is selected diplacusis function cassette player core to put speech music information, picks up counting simultaneously.At each preset time the data that will write are sent into and to be write card, produce corresponding waveform typing data recording on tape rail (this moment, the language rail was also simultaneously in recording) at once by writing card.

So, can make the recording of language and data sync.

Promptly at certain in short or a certain section music when occurring, record has corresponding data information to make corresponding thing on the track bar, reaches microcomputer and apparatus for displaying is synchronous.

For example: write a data 5AH to tape, at first, microcomputer is sent into 74LS374(U9 to 5AH), after Z80-CPU detects these data, can this 8 bit (01011010) of 5AH bit by bit with different wave represent 0 and long sine wave of 1(such as cycle represent 1, the representative 0 of lacking), write tape then by this way, finish digital signal and write, reach the synchronization purpose by microcomputer control in real time.

The utility model is recorded voice messaging and data message synchronized mixes, helps the selected songs of control circuit to given content on the tape.By the cassette tape that the utility model is recorded, cost is low, be easy to produce, and is suitable for and popularizes use.

Claims (2)

1, a kind of cassette tape dubs device, comprise that microcomputer, four track logics select diplacusis function cassette player core, dual track recorder, it is characterized in that having a data message to write card, write card and link to each other by the I/O bus with microcomputer, the DOL Data Output Line that writes card connects the input port of the data-track of dual track recorder.

2, cassette tape according to claim 1 dubs device, it is characterized in that the described card that writes comprises processor, I/O port control circuit, memory under program circuit, data memory circuit and D/A change-over circuit;

Z80-CPU(U1 in the processor) data line meets memory under program 2716(U4), data memory 6116(U3), its output termination D/A change-over circuit DAC0832(U2);

I/O port control circuit GAL16V8(U7) another a termination register 74LS374(U9 termination Z80-CPU(U1));

Memory under program 2716(U4) link to each other by the I/O bus with microcomputer, the other end and U1 join;

Data memory 6116(U3) link to each other by the I/O bus with microcomputer, the other end and U1 join;

D/A change-over circuit DAC0832(U2) meets U1, U2 output termination transport and placing device U8A, the input port of the data-track of U8A output termination dual track recorder.

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