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JPS5547774A - Phase synchronism circuit - Google Patents

Phase synchronism circuit

Info

Publication number
JPS5547774A
JPS5547774A JP11925078A JP11925078A JPS5547774A JP S5547774 A JPS5547774 A JP S5547774A JP 11925078 A JP11925078 A JP 11925078A JP 11925078 A JP11925078 A JP 11925078A JP S5547774 A JPS5547774 A JP S5547774A
Authority
JP
Japan
Prior art keywords
phase
input
lock state
output
vco17
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
JP11925078A
Other languages
Japanese (ja)
Other versions
JPS614233B2 (en
Inventor
Mitsushige Tadami
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 JP11925078A priority Critical patent/JPS5547774A/en
Publication of JPS5547774A publication Critical patent/JPS5547774A/en
Publication of JPS614233B2 publication Critical patent/JPS614233B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Synchronizing For Television (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE: To establish phase synchronism circuit in which no effect is brought in lock state in phase synchronism and lock state can be taken easily in out of lock state.
CONSTITUTION: If the input Si phase is advanced and capture range is taken off, the output So of the rectangular pulse wave if fed to the input Si with the comparator 15 to obtain the outputs as S1 and S2. The former charges up a capacitor as the control pulse to advance the phase of the output So and the latter discharges C as the control pulse delaying the phase. Thus, the charge and discharge to the charge pump to C is used, the phase error is converted into analog quantity, the signal depending on the quantity is returned to the phase comparator 15 via LPF16, VCO17, and frequency divider 18, and the phase lock of the input and output signal is made to the possible range of oscillation of VCO17.
COPYRIGHT: (C)1980,JPO&Japio
JP11925078A 1978-09-29 1978-09-29 Phase synchronism circuit Granted JPS5547774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11925078A JPS5547774A (en) 1978-09-29 1978-09-29 Phase synchronism circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11925078A JPS5547774A (en) 1978-09-29 1978-09-29 Phase synchronism circuit

Publications (2)

Publication Number Publication Date
JPS5547774A true JPS5547774A (en) 1980-04-04
JPS614233B2 JPS614233B2 (en) 1986-02-07

Family

ID=14756669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11925078A Granted JPS5547774A (en) 1978-09-29 1978-09-29 Phase synchronism circuit

Country Status (1)

Country Link
JP (1) JPS5547774A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966270A (en) * 1982-09-14 1984-04-14 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Line tuning circuit for image display unit
JPS60103774A (en) * 1983-10-14 1985-06-08 アールシーエー　ライセンシング　コーポレーシヨン Video display unit
JPS63286081A (en) * 1987-05-19 1988-11-22 Pioneer Electronic Corp Method for controlling pll circuit
EP0584824A3 (en) * 1992-08-26 1994-09-14 Nec Corp Oscillator circuit suitable for picture-in-picture system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966270A (en) * 1982-09-14 1984-04-14 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Line tuning circuit for image display unit
JPS60103774A (en) * 1983-10-14 1985-06-08 アールシーエー　ライセンシング　コーポレーシヨン Video display unit
JPS63286081A (en) * 1987-05-19 1988-11-22 Pioneer Electronic Corp Method for controlling pll circuit
EP0584824A3 (en) * 1992-08-26 1994-09-14 Nec Corp Oscillator circuit suitable for picture-in-picture system

Also Published As

Publication number Publication date
JPS614233B2 (en) 1986-02-07

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