JPS5477057A - Driving method of variable divider circuit - Google Patents

Driving method of variable divider circuit

Info

Publication number
JPS5477057A
JPS5477057A JP14385177A JP14385177A JPS5477057A JP S5477057 A JPS5477057 A JP S5477057A JP 14385177 A JP14385177 A JP 14385177A JP 14385177 A JP14385177 A JP 14385177A JP S5477057 A JPS5477057 A JP S5477057A
Authority
JP
Japan
Prior art keywords
terminal
counter
dividing operation
driving method
divider circuit
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
JP14385177A
Other languages
Japanese (ja)
Other versions
JPS5826857B2 (en
Inventor
Kenichi Torii
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14385177A priority Critical patent/JPS5826857B2/en
Publication of JPS5477057A publication Critical patent/JPS5477057A/en
Publication of JPS5826857B2 publication Critical patent/JPS5826857B2/en
Expired 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
    • H03K23/667—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 by switching the base during a counting cycle

Abstract

PURPOSE:To divide a number less than zero with no sudden variation in dividing ratio by mainly using two divider circuits and an up-down counter. CONSTITUTION:The contents of counter 60 becomes zero with a preset signal, Q outputs of FFs 61, 62 and 64 ''1'', and the Q output of FF63 ''0''; and then ''1'' is supplied to terminals A and B, so that 1/(m+1-1/n) dividing operation will be attained. With fine-adjustment switch circuit 65 set to the power-supply 67 side, clock 68 is inputtd to the down terminal of counter 60, (n) changes from ''1'' to ''10'' to invert FF62, and signal ''0'' is inputted to terminal A, thereby switching the 1/(m+1/n) dividing operation. Next, when (n) becomes ''2'', a clock is supplied to the up terminal of counter 60 by the outputs of gate 74 and FF61, thereby switching to the 1/(m+1-1/n) dividing operation. In this way, the extremely-fine adjustment of the variation can be achieved by adjusting the signal applied to terminal A and the value of (n).
JP14385177A 1977-12-02 1977-12-02 Driving method of variable frequency divider circuit Expired JPS5826857B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14385177A JPS5826857B2 (en) 1977-12-02 1977-12-02 Driving method of variable frequency divider circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14385177A JPS5826857B2 (en) 1977-12-02 1977-12-02 Driving method of variable frequency divider circuit

Publications (2)

Publication Number Publication Date
JPS5477057A true JPS5477057A (en) 1979-06-20
JPS5826857B2 JPS5826857B2 (en) 1983-06-06

Family

ID=15348426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14385177A Expired JPS5826857B2 (en) 1977-12-02 1977-12-02 Driving method of variable frequency divider circuit

Country Status (1)

Country Link
JP (1) JPS5826857B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006515322A (en) * 2003-01-10 2006-05-25 ディファルマ・ソシエタ・ペル・アチオニ Process for producing benzo [d] isoxazol-3-yl-methanesulfonic acid and its intermediate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174565U (en) * 1984-04-25 1985-11-19 日精株式会社 Protective net for underwater fish

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006515322A (en) * 2003-01-10 2006-05-25 ディファルマ・ソシエタ・ペル・アチオニ Process for producing benzo [d] isoxazol-3-yl-methanesulfonic acid and its intermediate

Also Published As

Publication number Publication date
JPS5826857B2 (en) 1983-06-06

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