GB8901315D0 - Digital filtering - Google Patents

Digital filtering

Info

Publication number: GB8901315D0
Authority: GB; United Kingdom
Prior art keywords: digital filtering; filtering; digital
Prior art date: 1988-01-21
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

GB898901315A

Other versions

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.)

Motorola Solutions Inc

Original Assignee

Codex 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.)

1988-01-21

Filing date

1989-01-20

Publication date

1989-03-15

1989-01-20 Application filed by Codex Corp filed Critical Codex Corp

1989-03-15 Publication of GB8901315D0 publication Critical patent/GB8901315D0/en

1989-08-31 Publication of GB2214378A publication Critical patent/GB2214378A/en

1992-07-22 Application granted granted Critical

1992-07-22 Publication of GB2214378B publication Critical patent/GB2214378B/en

2009-01-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0294—Variable filters; Programmable filters

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Computer Hardware Design (AREA)
Mathematical Physics (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Analogue/Digital Conversion (AREA)
Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Time-Division Multiplex Systems (AREA)

GB8901315A 1988-01-21 1989-01-20 A multiple mode modem and method of using the same Expired - Lifetime GB2214378B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US14632888A	1988-01-21	1988-01-21

Publications (3)

Publication Number	Publication Date
GB8901315D0 true GB8901315D0 (en)	1989-03-15
GB2214378A GB2214378A (en)	1989-08-31
GB2214378B GB2214378B (en)	1992-07-22

Family

ID=22516870

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8901315A Expired - Lifetime GB2214378B (en)	1988-01-21	1989-01-20	A multiple mode modem and method of using the same

Country Status (4)

Country	Link
JP (1)	JPH01284010A (en)
CA (1)	CA1336342C (en)
FR (1)	FR2626421B1 (en)
GB (1)	GB2214378B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5142286A (en) *	1990-10-01	1992-08-25	General Electric Company	Read-out photodiodes using sigma-delta oversampled analog-to-digital converters
SE467436B (en) *	1990-11-16	1992-07-13	Ericsson Telefon Ab L M	PROCEDURE AND DEVICE TO REDUCE THE NECESSARY SIZE OF A DIGITAL FILTER IN CONNECTION WITH ECO-ELIMINATION IN A SUBSCRIPTION LINE
US5274469A (en) *	1991-12-23	1993-12-28	Eastman Kodak Company	Sample rate converter circuit for image data

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2133118A5 (en) *	1971-04-08	1972-11-24	Trt Telecom Radio Electr
NL7416480A (en) *	1974-12-18	1976-06-22	Philips Nv	DEVICE CONTAINING AN INTEGRATED DIGITAL SIGNAL PROCESSING DEVICE.
JPS54162935A (en) *	1978-06-14	1979-12-25	Toshiba Corp	Variable length shift register device
JPS5592012A (en) *	1978-12-29	1980-07-12	Fujitsu Ltd	Variable delay circuit
FR2490901A1 (en) *	1980-09-19	1982-03-26	Trt Telecom Radio Electr	DIGITAL ECHO CANCER WITH ANALOGUE-DIGITAL CONVERTER WITH ADJUSTABLE DYNAMIC
JPS6086906A (en) *	1983-10-18	1985-05-16	Sony Corp	Variable delay circuit
JPS6087517A (en) *	1983-10-19	1985-05-17	Sony Corp	Variable delay circuit
JPS6121613A (en) *	1984-07-09	1986-01-30	Matsushita Electric Ind Co Ltd	Signal delay unit

1989
- 1989-01-20 GB GB8901315A patent/GB2214378B/en not_active Expired - Lifetime
- 1989-01-20 JP JP1174189A patent/JPH01284010A/en active Pending
- 1989-01-20 CA CA 588773 patent/CA1336342C/en not_active Expired - Fee Related
- 1989-01-23 FR FR8900756A patent/FR2626421B1/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA1336342C (en)	1995-07-18
JPH01284010A (en)	1989-11-15
GB2214378A (en)	1989-08-31
GB2214378B (en)	1992-07-22
FR2626421B1 (en)	1994-02-04
FR2626421A1 (en)	1989-07-28

Publication	Publication Date	Title
GB8816216D0 (en)	1988-08-10	Filters
GB8808372D0 (en)	1988-05-11	Filter
EP0350775A3 (en)	1990-03-21	Filter arrangement
EP0340914A3 (en)	1989-12-06	Filter
SG47606A1 (en)	1998-04-17	Digital filter
GB2218873B (en)	1992-05-27	Digital filter processor
EP0249279A3 (en)	1989-07-26	Digital filter
GB2175167B (en)	1989-04-05	Digital filters
GB8917204D0 (en)	1989-09-13	Improved digital filter
GB8925967D0 (en)	1990-01-04	Filters
GB8901315D0 (en)	1989-03-15	Digital filtering
GB8826196D0 (en)	1988-12-14	Filter
GB8805497D0 (en)	1988-04-07	Fishtank filter
GB2217222B (en)	1992-01-22	Filter
GB8808100D0 (en)	1988-05-11	Filters
GB2224958B (en)	1992-08-12	Filtration
SU1568213A1 (en)	1990-05-30	Digital filter
EG18768A (en)	1994-01-30	Graduted filter
GB8824220D0 (en)	1988-11-23	Improved digital filter
GB8822874D0 (en)	1988-11-02	Improved digital filter
GB8821002D0 (en)	1988-10-05	Improved digital filter
SU1390782A1 (en)	1988-04-23	Digital filter
BG41982A1 (en)	1987-09-15	Digital filter
GB8615553D0 (en)	1986-07-30	Digital filter
GB8821271D0 (en)	1988-10-12	Filtration

Legal Events

Date	Code	Title	Description
1998-09-09	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19980120