WO1995020220A1 - Dispositif d'enregistrement avec mixage sur cassette - Google Patents

Dispositif d'enregistrement avec mixage sur cassette Download PDF

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Publication number
WO1995020220A1
WO1995020220A1 PCT/CN1994/000050 CN9400050W WO9520220A1 WO 1995020220 A1 WO1995020220 A1 WO 1995020220A1 CN 9400050 W CN9400050 W CN 9400050W WO 9520220 A1 WO9520220 A1 WO 9520220A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
microcomputer
circuit
card
cpu
Prior art date
Application number
PCT/CN1994/000050
Other languages
English (en)
Chinese (zh)
Inventor
Zheng Li
Xuejun Si Tu
Guangning Hu
Liyi Li
Hongyan Huang
Yuenian Zhang
Original Assignee
Zhuhai Sez Zhu Kuan Electronic Industry Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhuhai Sez Zhu Kuan Electronic Industry Co. Ltd. filed Critical Zhuhai Sez Zhu Kuan Electronic Industry Co. Ltd.
Priority to AU69933/94A priority Critical patent/AU6993394A/en
Publication of WO1995020220A1 publication Critical patent/WO1995020220A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

Definitions

  • the invention relates to a recording device for audio tapes, in particular to a synchronous recording device for voice information and data information of a cassette tape.
  • a cassette tape that simultaneously records voice information and data information is recorded on different magnetic recording tracks.
  • the two-channel cassette recorder is used to record this tape.
  • the recording of natural voice signals can be output through speakers.
  • Monitoring, and the data information is a coded and modulated digital signal that cannot be monitored by the human ear, making simultaneous recording of voice information and data information very difficult.
  • the four-track logic selection and listening function card type playback movement is controlled by the on and off of the motor and the on and off of the two electromagnetic wires.
  • the movement of the movement can be controlled by the computer through the control circuit, but
  • the four-track logic selection and replay function can only play sound and cannot be used for recording. Disclosure of invention
  • the object of the present invention is to solve the above-mentioned disadvantages, and propose a cassette tape mixing device, which can simultaneously record data information and voice information on the cassette tape, and the control circuit can control the output of voice and data according to the need.
  • the invention consists of a microcomputer, a four-track logic selection and listening function card-type playback core, a two-channel recorder, and a data information writing card;
  • the writing card is an expansion card of a microcomputer, including a processor and I / O control Circuit, program storage circuit, data storage circuit, D / A circuit.
  • the writing card is connected to the microcomputer through a bus.
  • the commands and data sent by the microcomputer are output to the writing card through the I / O port.
  • the writing card uses the D / A converter to encode the digital signals according to the microcomputer commands and data It is converted into a corresponding sine wave signal and sent to one channel of the two-channel recorder.
  • the data information is written under the control of the microcomputer, and the level of the recording signal of the recorder is controlled by the writing card.
  • FIG. 1 is a principle block diagram of the present invention
  • FIG 2-1, Figure 2-2, Figure 2-3 are electrical schematic diagrams of the write card of the present invention.
  • the present invention includes a microcomputer, a four-track logical selection and listening function card-type playback core, a two-channel recorder, and a data information writing card.
  • the microcomputer sends a command to the writing card, and outputs the data information to the writing card.
  • the encoded digital signal is converted into a corresponding sine wave signal and sent to the other channel of the two-channel recorder.
  • the two-channel recorder simultaneously records voice information and data information on a cassette tape.
  • the write card consists of six parts:
  • U5 is a NOT gate circuit.
  • U5A, U5B and capacitor (:, crystal oscillator K0) form an oscillation circuit.
  • the clock signal is generated and sent to pin 6 of U1.
  • the program code and data from program memory U4 and data memory U3 are sent to pins 7-10 and 12-15 of U1.
  • the waveform data signal generated by U1 is sent to D / A conversion circuit DAC0832 (U2) 4-7 feet and 13-16 feet;
  • the write card processor is responsible for receiving microcomputer commands and controlling the D / A converter (U2) to generate the required signal waveform and write to the tape;
  • (3) is a program memory circuit composed of EPR0M2716 (U4), which contains the waveform generator program of this card, a communication program with a microcomputer, etc., and the program code is controlled by the CPU (U1);
  • D / A circuit consisting of DAC0832 (U2) and op amp U8A, which converts the data sent by the CPU into a sinusoidal signal; the CPU (Ul) writes the waveform data to U2 via the U1 data line D / A conversion, U8A converts the current signal output by U2 into a voltage signal, and outputs it to the two-channel recorder by USA 1 pin.
  • the ROM chip select control signals are generated by U7's 19 pins to program memory U4.
  • the 18th pin of U7 generates the RM chip select control signal to I, and the read data control signal of ⁇ 7 of ⁇ 7 to the 1st pin of register U9.
  • the cassette player plays the language and music information, and starts timing at the same time. At each predetermined time, the data to be written is sent to the writing card, and the corresponding waveform is immediately generated by the writing card and recorded into the tape data track (at this time, the language track is also being recorded).
  • the corresponding data information is recorded on the data track to do the corresponding thing, and the microcomputer and the broadcasting device are synchronized.
  • the microcomputer sends 5M to U9 (74LS374) Z80—After the CPU detects this data, the 8-bit binary number (01011010) of 5AH can be used in different waveforms bit by bit. Represents 0 and 1 (for example, a sine wave with a long period represents 1 and a short represents 0), and then writes to the tape in this way, and completes the digital signal written by the microcomputer in real time to achieve the purpose of synchronous recording.
  • the present invention synchronizes and records voice information and data information, which is beneficial for the control circuit to select designated content on the magnetic tape.
  • the cassette tape recorded by the present invention has low cost, is easy to produce, and is suitable for popularization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

Dispositif d'enregistrement avec mixage sur cassette, comportant un micro-ordinateur, une unité de lecture à carte fonctionnelle de lecture par sélection logique sur quatre canaux, un enregistreur stéréophonique, et une carte d'écriture d'informations de traitement. La carte d'écriture et l'unité de lecture sont commandées par le micro-ordinateur. L'enregistreur stéréophonique enregistre en mode synchrone les informations vocales et les informations de traitement sur des pistes différentes de la cassette.
PCT/CN1994/000050 1994-01-25 1994-06-22 Dispositif d'enregistrement avec mixage sur cassette WO1995020220A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69933/94A AU6993394A (en) 1994-01-25 1994-06-22 A device for mixingly recording operation of a cassette

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN94201388.3 1994-01-25
CN94201388U CN2177987Y (zh) 1994-01-25 1994-01-25 盒式录音带混录装置

Publications (1)

Publication Number Publication Date
WO1995020220A1 true WO1995020220A1 (fr) 1995-07-27

Family

ID=5040741

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1994/000050 WO1995020220A1 (fr) 1994-01-25 1994-06-22 Dispositif d'enregistrement avec mixage sur cassette

Country Status (3)

Country Link
CN (1) CN2177987Y (fr)
AU (1) AU6993394A (fr)
WO (1) WO1995020220A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737867A (en) * 1984-02-03 1988-04-12 Brother Kogyo Kabushiki Kaisha Power saving arrangement in information recording system
US4760566A (en) * 1985-04-08 1988-07-26 Hitachi, Ltd. Method of controlling write operation for rotating type recording medium
WO1993000681A1 (fr) * 1991-06-27 1993-01-07 Binet Co., Ltd. Systeme d'enregistrement opto-magnetique de donnees
EP0565092A1 (fr) * 1992-04-08 1993-10-13 Sony Corporation Lecteur de disque CD-ROM
EP0570191A2 (fr) * 1992-05-14 1993-11-18 Sony Corporation Appareil de restitution audio
US5265075A (en) * 1991-09-11 1993-11-23 Dictaphone Corporation Voice processing system with editable voice files

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737867A (en) * 1984-02-03 1988-04-12 Brother Kogyo Kabushiki Kaisha Power saving arrangement in information recording system
US4760566A (en) * 1985-04-08 1988-07-26 Hitachi, Ltd. Method of controlling write operation for rotating type recording medium
WO1993000681A1 (fr) * 1991-06-27 1993-01-07 Binet Co., Ltd. Systeme d'enregistrement opto-magnetique de donnees
US5265075A (en) * 1991-09-11 1993-11-23 Dictaphone Corporation Voice processing system with editable voice files
EP0565092A1 (fr) * 1992-04-08 1993-10-13 Sony Corporation Lecteur de disque CD-ROM
EP0570191A2 (fr) * 1992-05-14 1993-11-18 Sony Corporation Appareil de restitution audio

Also Published As

Publication number Publication date
CN2177987Y (zh) 1994-09-21
AU6993394A (en) 1995-08-08

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