JPS57170688A - Jitter compensation circuit - Google Patents

Jitter compensation circuit

Info

Publication number
JPS57170688A
JPS57170688A JP56056041A JP5604181A JPS57170688A JP S57170688 A JPS57170688 A JP S57170688A JP 56056041 A JP56056041 A JP 56056041A JP 5604181 A JP5604181 A JP 5604181A JP S57170688 A JPS57170688 A JP S57170688A
Authority
JP
Japan
Prior art keywords
circuit
output
jitter
vco33
signal
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
JP56056041A
Other languages
Japanese (ja)
Other versions
JPH0141063B2 (en
Inventor
Tsutomu Takamori
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 JP56056041A priority Critical patent/JPS57170688A/en
Publication of JPS57170688A publication Critical patent/JPS57170688A/en
Publication of JPH0141063B2 publication Critical patent/JPH0141063B2/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
    • H04N9/89—Time-base error compensation
    • H04N9/896—Time-base error compensation using a digital memory with independent write-in and read-out clock generators

Abstract

PURPOSE:To remove the jitter (variation of time axis) in a color video signal by delaying the color video signal to be supplied to an A/D converter by one horizontal period, and simultaneously delaying the response of a PLL circuit by one- division. CONSTITUTION:A delay circuit 21 delays a color video signal Sc from an input processor 2 and outputs the delayed signal to an A/D converter 3. The PLL circuit 12 consists of a phase comparator 31, a ''0'' division holding circuit 32 holding the compared output from the circuit 31, a VCO33 controlled by the held output, a divider circuit 34 dividing the oscillation output from the VCO33 into 1/N frequency. The divided output from the circuit 34 and the output of a burst gate circuit 11 are supplied to the circuit 31, so that the oscillation output from the VCO33 is made a pulse Pw with the jitter delayed by one horizontal period. Thus, when a digital signal Sd is written in a memory 4, the jitter is removed from the signal.
JP56056041A 1981-04-14 1981-04-14 Jitter compensation circuit Granted JPS57170688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56056041A JPS57170688A (en) 1981-04-14 1981-04-14 Jitter compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56056041A JPS57170688A (en) 1981-04-14 1981-04-14 Jitter compensation circuit

Publications (2)

Publication Number Publication Date
JPS57170688A true JPS57170688A (en) 1982-10-20
JPH0141063B2 JPH0141063B2 (en) 1989-09-01

Family

ID=13015996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56056041A Granted JPS57170688A (en) 1981-04-14 1981-04-14 Jitter compensation circuit

Country Status (1)

Country Link
JP (1) JPS57170688A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113785A (en) * 1984-06-29 1986-01-22 Hitachi Ltd Device for correcting error of time base
JPS6374280A (en) * 1986-09-17 1988-04-04 Pioneer Electronic Corp Time axis error correcting device
JPH03106279A (en) * 1989-09-20 1991-05-02 Sharp Corp Time base corrector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148317A (en) * 1977-05-31 1978-12-23 Sony Corp Error correction unit for time axis

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148317A (en) * 1977-05-31 1978-12-23 Sony Corp Error correction unit for time axis

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113785A (en) * 1984-06-29 1986-01-22 Hitachi Ltd Device for correcting error of time base
JPH084337B2 (en) * 1984-06-29 1996-01-17 株式会社日立製作所 Time axis error correction device
JPS6374280A (en) * 1986-09-17 1988-04-04 Pioneer Electronic Corp Time axis error correcting device
JPH0620293B2 (en) * 1986-09-17 1994-03-16 パイオニア株式会社 Time axis error correction device
JPH03106279A (en) * 1989-09-20 1991-05-02 Sharp Corp Time base corrector

Also Published As

Publication number Publication date
JPH0141063B2 (en) 1989-09-01

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