JPS648783A - Video signal reproducing device - Google Patents

Video signal reproducing device

Info

Publication number
JPS648783A
JPS648783A JP62164816A JP16481687A JPS648783A JP S648783 A JPS648783 A JP S648783A JP 62164816 A JP62164816 A JP 62164816A JP 16481687 A JP16481687 A JP 16481687A JP S648783 A JPS648783 A JP S648783A
Authority
JP
Japan
Prior art keywords
period
video signal
memory
horizontal scanning
readout
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
JP62164816A
Other languages
Japanese (ja)
Other versions
JPH07105934B2 (en
Inventor
Tsutomu Fukatsu
Yoshihiro Nakatani
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62164816A priority Critical patent/JPH07105934B2/en
Priority to US07/209,274 priority patent/US5034827A/en
Publication of JPS648783A publication Critical patent/JPS648783A/en
Publication of JPH07105934B2 publication Critical patent/JPH07105934B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To attain high speed reproduction without skew by setting an address reset period, a write period and a readout period to be an integral multiple of a horizontal scanning period of a video signal. CONSTITUTION:In reproducing a video signal while a recording medium is run at a speed being an even multiple of the speed at recording, a signal reproduced from rotary heads HA, HB at a period corresponding to the speed is written into a memory 42 and a signal stored in the memory 42 is read out alternately. In this case, a timing controller 26 and an address counter 46 set the address reset period, the write period and the readout period to be an integral multiple of the horizontal scanning period of the video signal. Thus, the write/readout of the memory is applied in the unit of horizontal scanning lines and the address control of the memory is decided in the unit of horizontal scanning lines, then excellent high speed reproduction is attained, in which no adverse effect due to skew is caused on the reproduced pattern.
JP62164816A 1987-06-30 1987-06-30 Video signal playback device Expired - Fee Related JPH07105934B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62164816A JPH07105934B2 (en) 1987-06-30 1987-06-30 Video signal playback device
US07/209,274 US5034827A (en) 1987-06-30 1988-06-20 Video signal processing apparatus with memory read/write timing related to horizontal scanning period

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62164816A JPH07105934B2 (en) 1987-06-30 1987-06-30 Video signal playback device

Publications (2)

Publication Number Publication Date
JPS648783A true JPS648783A (en) 1989-01-12
JPH07105934B2 JPH07105934B2 (en) 1995-11-13

Family

ID=15800465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62164816A Expired - Fee Related JPH07105934B2 (en) 1987-06-30 1987-06-30 Video signal playback device

Country Status (1)

Country Link
JP (1) JPH07105934B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02230394A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor
JPH02230396A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor
JPH02230395A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949576A (en) * 1982-09-14 1984-03-22 Matsushita Electric Ind Co Ltd Cleaning device of copying machine
JPS60157382A (en) * 1984-01-27 1985-08-17 Hitachi Ltd Rotary head type magnetic video recorder and reproducer
JPS627277A (en) * 1985-07-03 1987-01-14 Matsushita Electric Ind Co Ltd Magnetic reproducing device
JPS6271388A (en) * 1985-09-25 1987-04-02 Toshiba Corp Picture memory controller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949576A (en) * 1982-09-14 1984-03-22 Matsushita Electric Ind Co Ltd Cleaning device of copying machine
JPS60157382A (en) * 1984-01-27 1985-08-17 Hitachi Ltd Rotary head type magnetic video recorder and reproducer
JPS627277A (en) * 1985-07-03 1987-01-14 Matsushita Electric Ind Co Ltd Magnetic reproducing device
JPS6271388A (en) * 1985-09-25 1987-04-02 Toshiba Corp Picture memory controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02230394A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor
JPH02230396A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor
JPH02230395A (en) * 1990-01-26 1990-09-12 Nohmi Bosai Ltd Device for testing function of scattered light type smoke sensor

Also Published As

Publication number Publication date
JPH07105934B2 (en) 1995-11-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees