JPS55133135A - Frequency dividing circuit for watch - Google Patents

Frequency dividing circuit for watch

Info

Publication number
JPS55133135A
JPS55133135A JP4014979A JP4014979A JPS55133135A JP S55133135 A JPS55133135 A JP S55133135A JP 4014979 A JP4014979 A JP 4014979A JP 4014979 A JP4014979 A JP 4014979A JP S55133135 A JPS55133135 A JP S55133135A
Authority
JP
Japan
Prior art keywords
period
output
trailing
leading
frequency dividing
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
JP4014979A
Other languages
Japanese (ja)
Other versions
JPS6316926B2 (en
Inventor
Shinji Morozumi
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha 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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP4014979A priority Critical patent/JPS55133135A/en
Publication of JPS55133135A publication Critical patent/JPS55133135A/en
Publication of JPS6316926B2 publication Critical patent/JPS6316926B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses

Landscapes

  • Electromechanical Clocks (AREA)
  • Pulse Circuits (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To make variable the frequency demultiplied output of the dynamic frequency divider, by controlling the output delay of the inverter circuit. CONSTITUTION:P channel transistors Tr12-16 and N channel transistors Tr17- 21 form respectively P and N pairs to constitute the five stages of inverter circuit. Since the output of each pair is delayed by semiperiod 0.5 T0 of clock phiO up to the trailing and leading of the input 27, the period is 2.5 TO. Further, from the leading to trailing of the input 27, the period is 1.5 TO, the period of signal is 4 TO to form 1/4 frequency dividing waveform. Vc is normally at H level, but this is tentatively made to L level. Tr22 is made effective and the period from the leading of the input 27 to the trailing of the output 30 is extended from 0.5 TO- 1.5 TO, and the frequency dividing output period can be made greater by TO, that is, by one period of the clock phiO. Thus, the variable frequency division can be realized for the dynamic frequency divider.
JP4014979A 1979-04-03 1979-04-03 Frequency dividing circuit for watch Granted JPS55133135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4014979A JPS55133135A (en) 1979-04-03 1979-04-03 Frequency dividing circuit for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4014979A JPS55133135A (en) 1979-04-03 1979-04-03 Frequency dividing circuit for watch

Publications (2)

Publication Number Publication Date
JPS55133135A true JPS55133135A (en) 1980-10-16
JPS6316926B2 JPS6316926B2 (en) 1988-04-12

Family

ID=12572704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4014979A Granted JPS55133135A (en) 1979-04-03 1979-04-03 Frequency dividing circuit for watch

Country Status (1)

Country Link
JP (1) JPS55133135A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153820A (en) * 1984-08-23 1986-03-17 Fujitsu Ltd Delay circuit
JP2021093632A (en) * 2019-12-10 2021-06-17 富士通株式会社 Divider circuit, information processing device, and information processing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134365A (en) * 1976-05-06 1977-11-10 Toshiba Corp Counter
JPS548451A (en) * 1977-06-21 1979-01-22 Citizen Watch Co Ltd Digital-type frequency adjusting circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134365A (en) * 1976-05-06 1977-11-10 Toshiba Corp Counter
JPS548451A (en) * 1977-06-21 1979-01-22 Citizen Watch Co Ltd Digital-type frequency adjusting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153820A (en) * 1984-08-23 1986-03-17 Fujitsu Ltd Delay circuit
JPH0834418B2 (en) * 1984-08-23 1996-03-29 富士通株式会社 Delay circuit
JP2021093632A (en) * 2019-12-10 2021-06-17 富士通株式会社 Divider circuit, information processing device, and information processing method

Also Published As

Publication number Publication date
JPS6316926B2 (en) 1988-04-12

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