JPS5252616A - Synchronous signal generating circuit in data reading device - Google Patents

Synchronous signal generating circuit in data reading device

Info

Publication number
JPS5252616A
JPS5252616A JP50128358A JP12835875A JPS5252616A JP S5252616 A JPS5252616 A JP S5252616A JP 50128358 A JP50128358 A JP 50128358A JP 12835875 A JP12835875 A JP 12835875A JP S5252616 A JPS5252616 A JP S5252616A
Authority
JP
Japan
Prior art keywords
signal generating
generating circuit
reading device
data reading
synchronous 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.)
Pending
Application number
JP50128358A
Other languages
Japanese (ja)
Inventor
Yasuhiro Tawara
Hitoshi Takagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP50128358A priority Critical patent/JPS5252616A/en
Publication of JPS5252616A publication Critical patent/JPS5252616A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE: To enable lock-in on synchronization even if the frequency of the voltage control oscillator in a PLL circuit is deviated from input clock pulse signal, by using such a phase comparator that is capable of detecting the phase of two signals even if the phase difference of two signals deviates in pulse time interval duration at the lock-in of period.
COPYRIGHT: (C)1977,JPO&Japio
JP50128358A 1975-10-27 1975-10-27 Synchronous signal generating circuit in data reading device Pending JPS5252616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50128358A JPS5252616A (en) 1975-10-27 1975-10-27 Synchronous signal generating circuit in data reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50128358A JPS5252616A (en) 1975-10-27 1975-10-27 Synchronous signal generating circuit in data reading device

Publications (1)

Publication Number Publication Date
JPS5252616A true JPS5252616A (en) 1977-04-27

Family

ID=14982834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50128358A Pending JPS5252616A (en) 1975-10-27 1975-10-27 Synchronous signal generating circuit in data reading device

Country Status (1)

Country Link
JP (1) JPS5252616A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106241A (en) * 1980-10-31 1982-07-02 Westinghouse Electric Corp Phase lock loop
JPS5850827A (en) * 1981-09-08 1983-03-25 Fujitsu Ltd Pll circuit
JPS5922447A (en) * 1982-07-29 1984-02-04 Toshiba Corp Phase detection circuit
JPS61220174A (en) * 1985-03-27 1986-09-30 Ricoh Co Ltd Detection for frame synchronism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106241A (en) * 1980-10-31 1982-07-02 Westinghouse Electric Corp Phase lock loop
JPS5850827A (en) * 1981-09-08 1983-03-25 Fujitsu Ltd Pll circuit
JPH0442752B2 (en) * 1981-09-08 1992-07-14 Fujitsu Ltd
JPS5922447A (en) * 1982-07-29 1984-02-04 Toshiba Corp Phase detection circuit
JPS61220174A (en) * 1985-03-27 1986-09-30 Ricoh Co Ltd Detection for frame synchronism

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