GB1151505A - Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements - Google Patents

Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements

Info

Publication number
GB1151505A
GB1151505A GB3477465A GB3477465A GB1151505A GB 1151505 A GB1151505 A GB 1151505A GB 3477465 A GB3477465 A GB 3477465A GB 3477465 A GB3477465 A GB 3477465A GB 1151505 A GB1151505 A GB 1151505A
Authority
GB
United Kingdom
Prior art keywords
frequency divider
divider circuit
improvements relating
circuit arrangements
variable ratio
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.)
Expired
Application number
GB3477465A
Other languages
English (en)
Inventor
David John Martin
Richard David Young
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.)
GE Healthcare UK Ltd
Plessey Co Ltd
Original Assignee
GE Healthcare UK Ltd
Plessey 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 GE Healthcare UK Ltd, Plessey Co Ltd filed Critical GE Healthcare UK Ltd
Priority to GB3477465A priority Critical patent/GB1151505A/en
Priority to NL6610964A priority patent/NL6610964A/xx
Priority to DK411966A priority patent/DK117576C/da
Priority to NO16425666A priority patent/NO120431B/no
Priority to DE1966P0040182 priority patent/DE1298557B/de
Publication of GB1151505A publication Critical patent/GB1151505A/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
    • H03K23/662—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 adding or suppressing pulses
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se
    • 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
    • H03L7/197—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1974—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Complex Calculations (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Manipulation Of Pulses (AREA)
GB3477465A 1965-08-13 1965-08-13 Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements Expired GB1151505A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3477465A GB1151505A (en) 1965-08-13 1965-08-13 Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements
NL6610964A NL6610964A (https=) 1965-08-13 1966-08-04
DK411966A DK117576C (da) 1965-08-13 1966-08-10 Frekvensdeler med variabelt frekvensforhold.
NO16425666A NO120431B (https=) 1965-08-13 1966-08-10
DE1966P0040182 DE1298557B (de) 1965-08-13 1966-08-12 Schaltungsanordnung fuer einen veraenderlichen elektronischen Frequenzteiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3477465A GB1151505A (en) 1965-08-13 1965-08-13 Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements

Publications (1)

Publication Number Publication Date
GB1151505A true GB1151505A (en) 1969-05-07

Family

ID=10369785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3477465A Expired GB1151505A (en) 1965-08-13 1965-08-13 Improvements relating to Variable Ratio Frequency Divider Circuit Arrangements

Country Status (5)

Country Link
DE (1) DE1298557B (https=)
DK (1) DK117576C (https=)
GB (1) GB1151505A (https=)
NL (1) NL6610964A (https=)
NO (1) NO120431B (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213636A3 (en) * 1985-09-03 1988-10-19 Nec Corporation Frequency synthesizer of a phase-locked type with a sampling circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT354620B (de) * 1977-12-27 1980-01-25 Rodler Ing Hans Anordnung zur behandlung mit interferenzstroemen
DE2900612C2 (de) * 1979-01-09 1983-02-24 Hans 8228 Freilassing Rodler Gerät zur Interferenzstromtherapie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263301A (https=) * 1960-04-12
DE1167074B (de) * 1960-10-11 1964-04-02 Licentia Gmbh Dekadischer Zaehler mit Voreinstellung bzw. Vorwahl
NL293848A (https=) * 1962-06-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213636A3 (en) * 1985-09-03 1988-10-19 Nec Corporation Frequency synthesizer of a phase-locked type with a sampling circuit

Also Published As

Publication number Publication date
NO120431B (https=) 1970-10-19
NL6610964A (https=) 1967-02-14
DK117576B (https=) 1970-05-11
DE1298557B (de) 1969-07-03
DK117576C (da) 1970-10-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees