CN2177278Y - Voice output controller - Google Patents

Abstract

The utility model relates to a voice output controlling device and uses a microcomputer to control a four orbital path logic selecting reviewing function card reproducing computer core through a controlling card. The voice output controlling device controls the output of the voice information and the data information according to the voice output controlling information on a recording tape mixed and recorded with the voice information and the data information. The controlling card uses an 8031 single chip computer as a core and a controlling software is used to manage the communication between the controlling card and the microcomputer. According to the instruction sent out by the microcomputer, the operation of the reproducing machine core is driven.

Description

Voice output controller

The utility model relates to a kind of control device, and particularly a kind of four track logics are selected the control device of diplacusis function cassette player core.

Four track logics select diplacusis function cassette player core to be made of motor, two solenoid controlled bars, magnetic head stress state switch, tape transport direction status switch, tape turnover status switch and mechanical parts, after the motor energising, come adhesive or decontrol control lever by two solenoid energisings or outage, to reach the purpose of control head loading, tape transport direction, normal tape transport or fast feed, the action of movement is controlled by control circuit.The cassette tape of recording voice message and data message simultaneously at present, when voice messaging and data message output, existing control device can not be controlled the output of voice messaging and data message as required, and control circuit can't detect the correctness of output content, thereby output content can take place and require inconsistent phenomenon.

The purpose of this utility model is at above-mentioned deficiency, proposes a kind of voice output control device, and it can control the output of voice messaging and data message as required, and can detect the correctness of output content.

The utility model comprises that microcomputer, four track logics select diplacusis function cassette player core, four track logics to select diplacusis function cassette player core control card and deposit in the movement Control Software among a slice EPROM on the control card; Movement links to each other by control line with control card, passes through the I/O bus mutual communication of microcomputer between control card and the microcomputer; It utilizes microcomputer to control the output that four track logics are selected the data message of the action of diplacusis function cassette player core and voice messaging and cooperation voice messaging by the movement control card.The cassette tape that it adopted is that voice messaging and data message are recorded in cassette tape on the different magnetic recording tracks respectively, and one of them track is as the voice track, record natural-sounding information; Another track is as data-track, and with the record of the digital signal form behind the coding data message relevant with voice, data message is control and the data that cooperate voice messaging output.

Four track logics select diplacusis function cassette player core control card to comprise single-chip microcomputer 8031, digital signal processing circuit (U8C, U8D), voice signal amplifying circuit (U8A, U8B), volume control circuit (U11) and I/O port control circuit (U2, U3, U5);

The data recording on tape track signal meets transport and placing device TL084(U8C, U8D through C7), meet single-chip microcomputer 8031(U4 by the U8D output terminal);

The voice track signal meets amplifying circuit TL084(U8A, U8B through C4), by U8B output termination volume control circuit TBA820(U11);

Single-chip microcomputer 8031(U4) meet volume control circuit TBA820(U11 by volume control line (VOLUMN-CONTROL) respectively), link to each other with movement by a control mouthful line (CONTROL PORT);

The register 74LS374(U5 of I/O port control circuit) meet single-chip microcomputer 8031(U4) data bus, U5 is by data bus and register 74LS374(U3) join code translator GAL20V8(U2) join with U5.

The signal of data recording on tape track is by the TL084(U8D in the digital signal processing circuit) transport and placing device reads, through amplifying, being shaped to square-wave signal to single-chip microcomputer and handling; The signal of voice track is by the TL084(U8B of voice signal amplifying circuit) transport and placing device, TBA820(U11) volume control circuit reads, amplifies and deliver to loudspeaker.

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

Accompanying drawing 1 is the structured flowchart of utility model;

Accompanying drawing 2 is the utility model control card structured flowcharts;

Accompanying drawing 3 is the utility model control card electrical schematic diagrams;

Accompanying drawing 4 is the utility model Control Software process flow diagrams.

As shown in Figure 1, the utility model is made up of movement, control card, microcomputer and control card software, movement links to each other by control line with control card, pass through the bus mutual communication of microcomputer between control card and microcomputer, control card also feeds back to microcomputer to the status information of movement except the data message on the tape is sent to the microcomputer.

As shown in Figure 3, Fig. 3 is merged with Fig. 3 B by Fig. 3 A, Fig. 3 B map interlinking 3A, and control card is a core with 8031 single-chip microcomputers, comprises digital signal processing circuit, voice signal amplifying circuit, volume control circuit and I/O port control circuit etc.

As shown in Figure 3:

1, is digital signal processing circuit, by transport and placing device TL084(U8C, U8D) and components and parts formations such as some additional resistances, electric capacity, when movement is in tone playing state, the magnetic head read output signal is delivered to 8031 8 pin through shielding line, C7, U8C, U8D, gives the single-chip microcomputer processing with becoming square-wave signal after the amplification of the signal on the data recording on tape track, the shaping.

2, be the voice signal amplifying circuit, by transport and placing device TL084(U8A, U8B), volume control circuit TBA820(U11) and components and parts such as some additional resistances, electric capacity constitute, wherein U8A, U8B and peripheral circuit constitute the two-stage universal amplifier, with voice signal faint on the tape through shielding line to C4, after sending into the U8A amplification, send volume control circuit U11 further to amplify by U8B, promote loudspeaker by U11 through C13 and sound.

3, be the single-chip microcomputer subsystem, by single-chip microcomputer 8031(U4), 74LS373(U1), EPROM2764(U6) and a slice GAL20V8(U7) constitute, U1 is an address latch, latchs low eight bit address of single-chip microcomputer U4; U7 is the player core driving circuit; by single-chip microcomputer through control line (CONTROL PORT) control U7 finish tape transport, F.F., fall soon, the finishing of mechanical action such as shutdown; U6 is the EPROM of a slice 8K * 8; the signal fetch program, the movement control program that store this device, and with interface routine of microcomputer communication etc.

4, be the I/O port control circuit, by GAL20V8(U2), 74LS374(U3, U5) constitute, U3 is a command register, the order that microcomputer sends (as tape transport, F.F., soon fall etc.) is left this register 74LS374(U3 earlier in through data bus), single-chip microcomputer from then on register receives order and also carries out corresponding actions; U5 is a data register, and the data that single-chip microcomputer is read from tape leave this register earlier in, for the microcomputer reading; U2 is an address decoder, selects the suitable I/O port of microcomputer that this control card is operated.

Control card receives microcomputer when sending reproduction command, with the voice messaging that writes down on the tape voice track by TL084(U8A, U8B), TBA820(U11) etc. the voice signal amplifying circuit of formation read, amplify, deliver to loudspeaker; Simultaneously with the data message that writes down on the data recording on tape track by TL084(U8C, U8D) digital signal processing circuit formed reads, through amplifying, being transformed into square-wave signal after the shaping and delivering to single-chip microcomputer.

Microcomputer after receiving the data that control card sends here, as required to control card send F.F., fall soon, time-out, tape change face, search desires to broadcast content and playback fast, the enlargement factor that can control the voice amplifying circuit simultaneously is to regulate volume.

Wherein fast search desire to broadcast content and playback be according to the shortest time principle with head position at the place that begins of desiring to broadcast content, movement enters tone playing state.

Sketch its control procedure:

1. microcomputer sends an order and send register (as reproduction command), 8031 from then on register read and control movement and produce corresponding actions.

2. in the playback process, 8031 information that read from track bar are sent into data register at once and are read for microcomputer.

3. broadcast process synchronously: because of record on the audiotape has data in synchronization information, 8031 send into data register from the data-track sense information, carry out corresponding action after the microcomputer reception information.

The utility model has very big superiority in conjunction with multidisciplinary audio-visual education software, and at first common TV Teaching in University mode is not limited by the set time, easily random repetitive learning process; Secondly loudspeaker output is natural language fully, and the on-mechanical language helps language learning; Moreover voice messaging and data message are exported synchronously, make audio-visual education computer system acoustic image and luxuriant, improve the quality of teaching, and also can arbitrarily position Tape Contents, specify arbitrarily and want the content play, last, owing to adopted cassette audio tape to write down voice signal, avoided the weakness that multi-media voice deal with data amount is big, cost is high, be easy to promote.

Claims (2)

1, a kind of voice output control device, comprise that microcomputer, four track logics select diplacusis function cassette player core, it is characterized in that having one or four track logics to select diplacusis function cassette player core control card, control card and microcomputer join by the I/O bus, and control card and movement join by control line.

2, voice output control device according to claim 1 is characterized in that described four track logics select diplacusis function cassette player core control card to comprise single-chip microcomputer 8031, digital signal processing circuit (U8C, U8D), voice signal amplifying circuit (U8A, U8B), volume control circuit (U11) and I/O port control circuit (U2, U3, U5);

The data recording on tape track signal meets transport and placing device TL084(U8C, U8D through C7), meet single-chip microcomputer 8031(U4 by the U8D output terminal);

The voice track signal meets amplifying circuit TL084(U8A, U8B through C4), by U8B output termination volume control circuit TBA820(U11);

Single-chip microcomputer 8031(U4) connects volume control circuit by volume control line (VOLUMN-CONTROL) respectively, link to each other with movement by a control mouthful line (CONTROL PORT);

The register 74LS374(U5 of I/O port control circuit) meet single-chip microcomputer 8031(U4) data bus, U5 is by data bus and register 74LS374(U3) join code translator GAL20V8(U2) join with U5.

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