JPS5624830A - Phase-synchronous oscillator - Google Patents

Phase-synchronous oscillator

Info

Publication number
JPS5624830A
JPS5624830A JP10152079A JP10152079A JPS5624830A JP S5624830 A JPS5624830 A JP S5624830A JP 10152079 A JP10152079 A JP 10152079A JP 10152079 A JP10152079 A JP 10152079A JP S5624830 A JPS5624830 A JP S5624830A
Authority
JP
Japan
Prior art keywords
order bits
low
carry signal
signal
bits
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
JP10152079A
Other languages
Japanese (ja)
Other versions
JPS609374B2 (en
Inventor
Yoji Fukinuki
Isao Furukawa
Tetsujirou Yasushi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54101520A priority Critical patent/JPS609374B2/en
Publication of JPS5624830A publication Critical patent/JPS5624830A/en
Publication of JPS609374B2 publication Critical patent/JPS609374B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number

Abstract

PURPOSE:To improve synchronizing frequency precision by dividing a digital signal into high-order bits and low-order bits, by inputting the low-order bits to a low- order bit carry signal generating circuit and then by inputting the carry signal and the high-order bits to an adding circuit. CONSTITUTION:A signal from control part 14 is divided into high-order bits b4- b7 and low-order bits b0-b3. Then, low-order bits b0-b3 are supplied to gates A0-A3 of carry signal generating circuit 18 composed of a binary rate multiplier and output signals of gates A0-A3 are mixed in one to generate a carry signal. Further, the carry signal and the high-order bits are added by adder 17, the output of which is input to D/A converter 15. Thus, the number of bits of the D/A converter can be made less than that of the signal.
JP54101520A 1979-08-08 1979-08-08 phase synchronized oscillator Expired JPS609374B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54101520A JPS609374B2 (en) 1979-08-08 1979-08-08 phase synchronized oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54101520A JPS609374B2 (en) 1979-08-08 1979-08-08 phase synchronized oscillator

Publications (2)

Publication Number Publication Date
JPS5624830A true JPS5624830A (en) 1981-03-10
JPS609374B2 JPS609374B2 (en) 1985-03-09

Family

ID=14302776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54101520A Expired JPS609374B2 (en) 1979-08-08 1979-08-08 phase synchronized oscillator

Country Status (1)

Country Link
JP (1) JPS609374B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015167455A (en) * 2014-03-04 2015-09-24 ローム株式会社 Drive circuit of voice coil motor, lens module and electronic equipment using the same, method for driving voice coil motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500624A (en) * 1985-03-06 1986-10-01 Philips Nv IMAGE DISPLAY CONTAINING A LINE SYNCHRONIZER AND LINE DEFLECTOR.
JPS6356865U (en) * 1986-09-30 1988-04-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015167455A (en) * 2014-03-04 2015-09-24 ローム株式会社 Drive circuit of voice coil motor, lens module and electronic equipment using the same, method for driving voice coil motor

Also Published As

Publication number Publication date
JPS609374B2 (en) 1985-03-09

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