JPS5730484A - Compensation system for speed error of reproduced video signal - Google Patents

Compensation system for speed error of reproduced video signal

Info

Publication number
JPS5730484A
JPS5730484A JP10371380A JP10371380A JPS5730484A JP S5730484 A JPS5730484 A JP S5730484A JP 10371380 A JP10371380 A JP 10371380A JP 10371380 A JP10371380 A JP 10371380A JP S5730484 A JPS5730484 A JP S5730484A
Authority
JP
Japan
Prior art keywords
video signal
supplied
output
reproduced video
speed error
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
JP10371380A
Other languages
Japanese (ja)
Other versions
JPH029758B2 (en
Inventor
Kazuyuki Takeshita
Tatsuo Kayano
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi 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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP10371380A priority Critical patent/JPS5730484A/en
Publication of JPS5730484A publication Critical patent/JPS5730484A/en
Publication of JPH029758B2 publication Critical patent/JPH029758B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To make complete speed compensation even when a chroma inverter is used, by synthesizing detection signals obtained at different times when compensating the speed of a reproduced video signal from a magnetic recording and reproducing device. CONSTITUTION:A reproduced video signal Sp is supplied to a phase comparator PC via a burst extractor BS to find a speed error between every adjacent horizontal scanning periods H. The output of the comparator PC is inputted to a saw-tooth wave generator SWG by being selected by a switch SW. A clock pulse CLK is supplied to a clock modulator CM and then compared with the output of the generator SWG to supply a converter DAC with a pulse which corresponds to the speed error. The signal Sp, on the other hand, is supplied from a memory MM through a converter ADC to a converter DAC directly for normal reproduction or by way of a digital chroma inverter CI for still reproduction, etc., to obtain a video signal So. When the inverter CI is used, the switch SW selects the output of an averaging circuit AV to synthesize the outputs of a one-horizontal-line delay circuit DL2.
JP10371380A 1980-07-30 1980-07-30 Compensation system for speed error of reproduced video signal Granted JPS5730484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10371380A JPS5730484A (en) 1980-07-30 1980-07-30 Compensation system for speed error of reproduced video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10371380A JPS5730484A (en) 1980-07-30 1980-07-30 Compensation system for speed error of reproduced video signal

Publications (2)

Publication Number Publication Date
JPS5730484A true JPS5730484A (en) 1982-02-18
JPH029758B2 JPH029758B2 (en) 1990-03-05

Family

ID=14361348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10371380A Granted JPS5730484A (en) 1980-07-30 1980-07-30 Compensation system for speed error of reproduced video signal

Country Status (1)

Country Link
JP (1) JPS5730484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949088A (en) * 1982-09-13 1984-03-21 Hitachi Ltd Reproducer of digital video signal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155124A (en) * 1974-06-03 1975-12-15
JPS5356004A (en) * 1976-10-29 1978-05-22 Ampex Magnetic recorder reproducer system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155124A (en) * 1974-06-03 1975-12-15
JPS5356004A (en) * 1976-10-29 1978-05-22 Ampex Magnetic recorder reproducer system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5949088A (en) * 1982-09-13 1984-03-21 Hitachi Ltd Reproducer of digital video signal
JPH0582117B2 (en) * 1982-09-13 1993-11-17 Hitachi Ltd

Also Published As

Publication number Publication date
JPH029758B2 (en) 1990-03-05

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