JPS55120275A - Sound recording and reproducing system - Google Patents

Sound recording and reproducing system

Info

Publication number
JPS55120275A
JPS55120275A JP2735779A JP2735779A JPS55120275A JP S55120275 A JPS55120275 A JP S55120275A JP 2735779 A JP2735779 A JP 2735779A JP 2735779 A JP2735779 A JP 2735779A JP S55120275 A JPS55120275 A JP S55120275A
Authority
JP
Japan
Prior art keywords
circuit
signal
horizontal synchronizing
sound signals
sampling
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2735779A
Other languages
Japanese (ja)
Inventor
Motohiko Takeuchi
Motoi Yagi
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2735779A priority Critical patent/JPS55120275A/en
Publication of JPS55120275A publication Critical patent/JPS55120275A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/92Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback

Abstract

PURPOSE:To make it possible to record sound signals and a video signal on the same track by alternately sampling sound signals of channels by using sampling pulses of a higher frequency than that of a horizontal synchronizing signal and then by recording and reproducing them in time-division mode. CONSTITUTION:A horizontal synchronizing signal separated by horizontal synchronizing separator circuit 1 is inputted to PLL2 to obtain a signal of a frequency multiplied by (n), which is inputted to sampling control circuit 3 together with the output of circuit 1. Different sound signals inputted to analog switches 41 and 42 are alternately sampled and mixed by circuit 3 and composed by adder circuit 5 to obtain a time-division multiplex signal, which is mixed by mixer circuit 7 via FM modulation circuit 6 with a video signal before being supplied to magnetic head 9 via recording amplifier circuit 8. A time-division multiplex signal obtained by separating the regenerated signal of head 9 by separator circuit 12 has its horizontal synchronizing signal separated by horizontal synchronizing separator circiut 15 and it is supplied to sampling con trol circuit 17; and circuit 17 and analog switches 181 and 182 perform completely the opposite operation to that of the recording system to extract sound signals of two channels.
JP2735779A 1979-03-09 1979-03-09 Sound recording and reproducing system Pending JPS55120275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2735779A JPS55120275A (en) 1979-03-09 1979-03-09 Sound recording and reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2735779A JPS55120275A (en) 1979-03-09 1979-03-09 Sound recording and reproducing system

Publications (1)

Publication Number Publication Date
JPS55120275A true JPS55120275A (en) 1980-09-16

Family

ID=12218786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2735779A Pending JPS55120275A (en) 1979-03-09 1979-03-09 Sound recording and reproducing system

Country Status (1)

Country Link
JP (1) JPS55120275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501888A1 (en) * 1981-03-12 1982-09-17 Victor Company Of Japan Audio signal recording and / or reproducing system for a video signal recording and / or reproducing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501888A1 (en) * 1981-03-12 1982-09-17 Victor Company Of Japan Audio signal recording and / or reproducing system for a video signal recording and / or reproducing apparatus

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