JPS5779778A - Audio signal recording and reproduction system - Google Patents

Audio signal recording and reproduction system

Info

Publication number
JPS5779778A
JPS5779778A JP55154879A JP15487980A JPS5779778A JP S5779778 A JPS5779778 A JP S5779778A JP 55154879 A JP55154879 A JP 55154879A JP 15487980 A JP15487980 A JP 15487980A JP S5779778 A JPS5779778 A JP S5779778A
Authority
JP
Japan
Prior art keywords
audio signal
audio
low
signal
time
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.)
Granted
Application number
JP55154879A
Other languages
Japanese (ja)
Other versions
JPH0142550B2 (en
Inventor
Akira Hirota
Seisuke Hirakuri
Taku Uchiumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55154879A priority Critical patent/JPS5779778A/en
Publication of JPS5779778A publication Critical patent/JPS5779778A/en
Publication of JPH0142550B2 publication Critical patent/JPH0142550B2/ja
Granted 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 obtain high S/N ratio even at a low speed, by time-compressing an audio signal of a single rotating head system and performing multiplex- recording throulgh frequency division, restoring it to the original pitch through time expansion at reproduction and making it a consecutive signal. CONSTITUTION:In a single rotating head system, for example, video signals of NTSC are recorded on a video track 2a as every one field as luminance signal III of low carrier modulation and as low frequency carrier chrominance signal IV, and compressed audio signals are recorded as mixing and multiplex as V or VI at upper and lower bands. Two charge transfer elements (BBD) which are alternately read out and written in are used, the audio signal in time compression is multiplex-recorded, and the two read in the same audio through overlapping for the switching period of track. At playback, the time is expanded and the original audio pitch is restored and reproduced as a consecutive audio signal. Thus, the audio signal with good frequency characteristics and low noise are obtained even at a low running speed.
JP55154879A 1980-11-04 1980-11-04 Audio signal recording and reproduction system Granted JPS5779778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154879A JPS5779778A (en) 1980-11-04 1980-11-04 Audio signal recording and reproduction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154879A JPS5779778A (en) 1980-11-04 1980-11-04 Audio signal recording and reproduction system

Publications (2)

Publication Number Publication Date
JPS5779778A true JPS5779778A (en) 1982-05-19
JPH0142550B2 JPH0142550B2 (en) 1989-09-13

Family

ID=15593936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154879A Granted JPS5779778A (en) 1980-11-04 1980-11-04 Audio signal recording and reproduction system

Country Status (1)

Country Link
JP (1) JPS5779778A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222681A (en) * 1982-06-18 1983-12-24 Sanyo Electric Co Ltd Recording and reproducing system of sound signal
JPS59100676A (en) * 1982-11-30 1984-06-09 Victor Co Of Japan Ltd Multiplex recording system and multiplex recording and reproducing system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532296A (en) * 1978-08-29 1980-03-06 Matsushita Electric Ind Co Ltd Magnetic recording and reproduction system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532296A (en) * 1978-08-29 1980-03-06 Matsushita Electric Ind Co Ltd Magnetic recording and reproduction system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222681A (en) * 1982-06-18 1983-12-24 Sanyo Electric Co Ltd Recording and reproducing system of sound signal
JPS59100676A (en) * 1982-11-30 1984-06-09 Victor Co Of Japan Ltd Multiplex recording system and multiplex recording and reproducing system
JPH0234514B2 (en) * 1982-11-30 1990-08-03 Victor Company Of Japan

Also Published As

Publication number Publication date
JPH0142550B2 (en) 1989-09-13

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