JPS5494002A - Signal recorder and reproducer - Google Patents

Signal recorder and reproducer

Info

Publication number
JPS5494002A
JPS5494002A JP65078A JP65078A JPS5494002A JP S5494002 A JPS5494002 A JP S5494002A JP 65078 A JP65078 A JP 65078A JP 65078 A JP65078 A JP 65078A JP S5494002 A JPS5494002 A JP S5494002A
Authority
JP
Japan
Prior art keywords
signals
waves
audio signals
time
modulation width
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
JP65078A
Other languages
Japanese (ja)
Other versions
JPS608543B2 (en
Inventor
Hideo Okamura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP65078A priority Critical patent/JPS608543B2/en
Publication of JPS5494002A publication Critical patent/JPS5494002A/en
Publication of JPS608543B2 publication Critical patent/JPS608543B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE: To facilitate discrimination of left and right channels and to reduce the infulences of spike noises and the deterioration in quality by subjecting the audio signals of the left and right channels to PWM so that they may be multiplexed in a time shearing manner.
CONSTITUTION: The left and right audio signals are impressed upon terminals L and R, respectively, and fed through LPFs 1 and 2 to summing circuits 6 and 7 so that the triangular waves b and c led out of the sampling pulses a of generator 3 may be overlapped thereon. The signals thus processed are sliced by slicing circuits 8 and 9 to generate PWD waves f and g. At this time, the minimum modulation width of the signals f is larger than the maximum modulation width of the signals g. These signals f and g are subjected to multiplexing operation in a time shearing manner with the pulses a so that they are generated as recording signals. On the other hand, by extracting the different PWM waves at a reproducing system, it is possible to separately take out the left and right audio signals even when the pulsating noises are mixed.
COPYRIGHT: (C)1979,JPO&Japio
JP65078A 1978-01-06 1978-01-06 Signal recording device and playback device Expired JPS608543B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP65078A JPS608543B2 (en) 1978-01-06 1978-01-06 Signal recording device and playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP65078A JPS608543B2 (en) 1978-01-06 1978-01-06 Signal recording device and playback device

Publications (2)

Publication Number Publication Date
JPS5494002A true JPS5494002A (en) 1979-07-25
JPS608543B2 JPS608543B2 (en) 1985-03-04

Family

ID=11479579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP65078A Expired JPS608543B2 (en) 1978-01-06 1978-01-06 Signal recording device and playback device

Country Status (1)

Country Link
JP (1) JPS608543B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008276869A (en) * 2007-04-27 2008-11-13 Victor Co Of Japan Ltd Optical pickup drive method and optical disk device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324889Y2 (en) * 1986-06-09 1991-05-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008276869A (en) * 2007-04-27 2008-11-13 Victor Co Of Japan Ltd Optical pickup drive method and optical disk device

Also Published As

Publication number Publication date
JPS608543B2 (en) 1985-03-04

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