JPS57111189A - Magnetic recorder/reproducer - Google Patents

Magnetic recorder/reproducer

Info

Publication number
JPS57111189A
JPS57111189A JP55187459A JP18745980A JPS57111189A JP S57111189 A JPS57111189 A JP S57111189A JP 55187459 A JP55187459 A JP 55187459A JP 18745980 A JP18745980 A JP 18745980A JP S57111189 A JPS57111189 A JP S57111189A
Authority
JP
Japan
Prior art keywords
heads
tape
recording
recorded
rotary
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
JP55187459A
Other languages
Japanese (ja)
Inventor
Kenji Nakano
Hisayoshi Moriwaki
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP55187459A priority Critical patent/JPS57111189A/en
Publication of JPS57111189A publication Critical patent/JPS57111189A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/928—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the sound signal being pulse code modulated and recorded in time division multiplex with the modulated video signal

Abstract

PURPOSE:To realize the recording/reproduction with high density, by recording with compression the audio signal in a section in which at least two rotary heads slidably contact with a recording medium at the same time with use of one of these heads when the audio or video signal is recorded and reproduced. CONSTITUTION:For a rotary magnetic head device 5, rotary magnetic heads 1A and 1B are distributed with a center angle alpha and a magnetic tape 8 is guided to the outer circumference of a rotary drum 2 which is turned toward an arrow A in a constant speed to be helically wound with a winding angle beta. Then the tape 8 is carried toward an arrow B in a constant speed, and heads 1A and 1B slidably contact with the tape 8 alternately. Thus recording tracks Ta and Tb are formed on the tape 8. In this case, the heads 1A and 1B slidably contact at one time with the tape 8 in correspondence to the angle beta-alpha, and the overlap section is used as an audio track Ts. For instance, the specific phase relation is given to the horizontal synchronous signal of a video signal recorded by the head 1A, and at the same time the horizontal synchronous signal is recorded with compression of time axis by the head 1B to be delivered with voice and the voice is outputted with an expansion of time axis in the reproduction mode.
JP55187459A 1980-12-27 1980-12-27 Magnetic recorder/reproducer Pending JPS57111189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55187459A JPS57111189A (en) 1980-12-27 1980-12-27 Magnetic recorder/reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55187459A JPS57111189A (en) 1980-12-27 1980-12-27 Magnetic recorder/reproducer

Publications (1)

Publication Number Publication Date
JPS57111189A true JPS57111189A (en) 1982-07-10

Family

ID=16206440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55187459A Pending JPS57111189A (en) 1980-12-27 1980-12-27 Magnetic recorder/reproducer

Country Status (1)

Country Link
JP (1) JPS57111189A (en)

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