JPS6421764A - Disk recording and reproducing device - Google Patents

Disk recording and reproducing device

Info

Publication number
JPS6421764A
JPS6421764A JP17598687A JP17598687A JPS6421764A JP S6421764 A JPS6421764 A JP S6421764A JP 17598687 A JP17598687 A JP 17598687A JP 17598687 A JP17598687 A JP 17598687A JP S6421764 A JPS6421764 A JP S6421764A
Authority
JP
Japan
Prior art keywords
disk
case
audio signal
signal
traced
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
JP17598687A
Other languages
Japanese (ja)
Other versions
JPH0782706B2 (en
Inventor
Yukari Aranou
Takeshi Onishi
Kiyoshi Matsutani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62175986A priority Critical patent/JPH0782706B2/en
Publication of JPS6421764A publication Critical patent/JPS6421764A/en
Publication of JPH0782706B2 publication Critical patent/JPH0782706B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To prevent the decrease of the memory capacity of a magneto-optical disk, and to make it efficient by performing the simultaneous monitoring of an audio signal by a single optical head. CONSTITUTION:The disk 1 is made to revolve at high speed and traced, and in addition, a track is jumped from the termination point of the start point of tracing, and the same part is traced consecutively plural times, and an audio signal is recorded or erased by compressing it. Namely, in case of the recording of the signal, the coded signal is compressed below 1/3 by a compression circuit 49 and recorded, and in case of the reproduction, the demodulated signal is expanded over 3 times by an expansion circuit 52 and reproduced. Accordingly, since time required for tracing it can be shortened, and the operation of compression or expansion is given to the audio signal according to this operation, continuous recording reproducing similar to the case of 3 heads constitution is possible. Thus, the disk can be used effectively without decreasing the memory capacity for which the disk has.
JP62175986A 1987-07-16 1987-07-16 Disc recording / reproducing device Expired - Lifetime JPH0782706B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62175986A JPH0782706B2 (en) 1987-07-16 1987-07-16 Disc recording / reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62175986A JPH0782706B2 (en) 1987-07-16 1987-07-16 Disc recording / reproducing device

Publications (2)

Publication Number Publication Date
JPS6421764A true JPS6421764A (en) 1989-01-25
JPH0782706B2 JPH0782706B2 (en) 1995-09-06

Family

ID=16005701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62175986A Expired - Lifetime JPH0782706B2 (en) 1987-07-16 1987-07-16 Disc recording / reproducing device

Country Status (1)

Country Link
JP (1) JPH0782706B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH043371A (en) * 1990-04-20 1992-01-08 Sony Corp Disk recorder and disk reproducer
US6285632B1 (en) 1999-09-27 2001-09-04 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138527A (en) * 1986-11-30 1988-06-10 Nec Home Electronics Ltd Optical disk device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138527A (en) * 1986-11-30 1988-06-10 Nec Home Electronics Ltd Optical disk device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH043371A (en) * 1990-04-20 1992-01-08 Sony Corp Disk recorder and disk reproducer
US6285632B1 (en) 1999-09-27 2001-09-04 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6594203B2 (en) 1999-09-27 2003-07-15 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6597641B2 (en) 1999-09-27 2003-07-22 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6728170B2 (en) 1999-09-27 2004-04-27 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6741531B2 (en) 1999-09-27 2004-05-25 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6751170B2 (en) 1999-09-27 2004-06-15 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6870799B2 (en) 1999-09-27 2005-03-22 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6870798B2 (en) 1999-09-27 2005-03-22 Victor Company Of Japan, Ltd Information-signal recording and reproducing apparatus
US6873579B2 (en) 1999-09-27 2005-03-29 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6876605B2 (en) 1999-09-27 2005-04-05 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US6925035B2 (en) 1999-09-27 2005-08-02 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US7046589B2 (en) 1999-09-27 2006-05-16 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US7099240B2 (en) 1999-09-27 2006-08-29 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US7177239B2 (en) 1999-09-27 2007-02-13 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus
US7352661B2 (en) 1999-09-27 2008-04-01 Victor Company Of Japan, Ltd. Information-signal recording and reproducing apparatus

Also Published As

Publication number Publication date
JPH0782706B2 (en) 1995-09-06

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term