GB2217535B - Digital circuit arrangement - Google Patents

Digital circuit arrangement

Info

Publication number: GB2217535B
Authority: GB; United Kingdom
Prior art keywords: circuit arrangement; digital circuit; digital; arrangement; circuit
Prior art date: 1988-04-15
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 - Fee Related

Application number

GB8828947A

Other versions

GB2217535A (en

GB8828947D0 (en

Inventor

Brian R Gardner

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.)

Racal Research Ltd

Original Assignee

Racal Research 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.)

1988-04-15

Filing date

1988-12-12

Publication date

1992-12-16

1988-12-12 Application filed by Racal Research Ltd filed Critical Racal Research Ltd

1989-01-25 Publication of GB8828947D0 publication Critical patent/GB8828947D0/en

1989-10-25 Publication of GB2217535A publication Critical patent/GB2217535A/en

1992-12-16 Application granted granted Critical

1992-12-16 Publication of GB2217535B publication Critical patent/GB2217535B/en

2008-12-12 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- H03L7/08—Details of the phase-locked loop
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- 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
- H03L7/1976—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 using a phase accumulator for controlling the counter or frequency divider

GB8828947A 1988-04-15 1988-12-12 Digital circuit arrangement Expired - Fee Related GB2217535B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8808982		1988-04-15

Publications (3)

Publication Number	Publication Date
GB8828947D0 GB8828947D0 (en)	1989-01-25
GB2217535A GB2217535A (en)	1989-10-25
GB2217535B true GB2217535B (en)	1992-12-16

Family

ID=10635281

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8828947A Expired - Fee Related GB2217535B (en)	1988-04-15	1988-12-12	Digital circuit arrangement

Country Status (1)

Country	Link
GB (1)	GB2217535B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5166642A (en) *	1992-02-18	1992-11-24	Motorola, Inc.	Multiple accumulator fractional N synthesis with series recombination
FR2705002B1 (en) *	1993-05-07	1995-06-23	Thomson Csf	METHOD AND DEVICE FOR GENERATING A FREQUENCY CONTROLLED SIGNAL.
US5495206A (en) *	1993-10-29	1996-02-27	Motorola, Inc.	Fractional N frequency synthesis with residual error correction and method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0195482A1 (en) *	1985-03-20	1986-09-24	Koninklijke Philips Electronics N.V.	Recursive first order digital video signal filter

1988
- 1988-12-12 GB GB8828947A patent/GB2217535B/en not_active Expired - Fee Related

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0195482A1 (en) *	1985-03-20	1986-09-24	Koninklijke Philips Electronics N.V.	Recursive first order digital video signal filter

Also Published As

Publication number	Publication date
GB2217535A (en)	1989-10-25
GB8828947D0 (en)	1989-01-25

Publication	Publication Date	Title
EP0350141A3 (en)	1990-10-10	Multifunction flip-flop-type circuit
HUT55934A (en)	1991-06-28	Circuit arrangement
EP0351874A3 (en)	1990-05-30	Output circuit
GB8725455D0 (en)	1987-12-02	Circuit arrangement
EP0351820A3 (en)	1990-05-30	Output circuit
EP0369021A4 (en)	1992-05-06	Output circuit
GB8725625D0 (en)	1987-12-09	Digital integrated circuit
EP0434189A3 (en)	1992-09-23	Digital motion verificatin circuit
EP0323124A3 (en)	1989-11-29	Digital phase comparing circuit
GB8805120D0 (en)	1988-03-30	Testing digital circuits
GB2224619B (en)	1993-05-19	Dialer circuit
GB8808286D0 (en)	1988-05-11	Circuit arrangement
EP0266159A3 (en)	1989-11-08	Digital muting circuit
GB2224600B (en)	1992-03-18	Circuit assembly
GB2214645B (en)	1992-09-09	Range-selecting circuit
EP0340720A3 (en)	1990-03-28	Interface circuit
GB2214334B (en)	1992-05-06	Integrated circuit
GB2217535B (en)	1992-12-16	Digital circuit arrangement
GB2190795B (en)	1990-01-10	Circuit arrangement
GB8704499D0 (en)	1987-04-01	Circuit arrangement
GB2220092B (en)	1992-06-03	Integrating circuit
GB8802132D0 (en)	1988-03-02	Digital integrated circuit
GB8816908D0 (en)	1988-08-17	Integrating circuit
GB2219437B (en)	1992-05-27	Circuit arrangements
GB8601655D0 (en)	1986-02-26	Circuit arrangement

Legal Events

Date	Code	Title	Description
2005-08-03	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 20041212