FR2270723B1 - - Google Patents

Info

Publication number: FR2270723B1
Authority: FR; France
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

FR7514382A

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.)

AT&T Corp

Original Assignee

Western Electric Co Inc

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.)

1974-05-09

Filing date

1975-05-07

Publication date

1977-12-09

1975-05-07 Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc

1975-12-05 Publication of FR2270723A1 publication Critical patent/FR2270723A1/fr

1977-12-09 Application granted granted Critical

1977-12-09 Publication of FR2270723B1 publication Critical patent/FR2270723B1/fr

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/02—Delta modulation, i.e. one-bit differential modulation
- H03M3/022—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM]
- H03M3/024—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM] using syllabic companding, e.g. continuously variable slope delta modulation [CVSD]

Landscapes

Engineering & Computer Science (AREA)
Theoretical Computer Science (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Analogue/Digital Conversion (AREA)

FR7514382A 1974-05-09 1975-05-07 Expired FR2270723B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US468449A US3899754A (en)	1974-05-09	1974-05-09	Delta modulation and demodulation with syllabic companding

Publications (2)

Publication Number	Publication Date
FR2270723A1 FR2270723A1 (fr)	1975-12-05
FR2270723B1 true FR2270723B1 (fr)	1977-12-09

Family

ID=23859860

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7514382A Expired FR2270723B1 (fr)	1974-05-09	1975-05-07

Country Status (10)

Country	Link
US (1)	US3899754A (fr)
JP (1)	JPS6013339B2 (fr)
BE (1)	BE828719A (fr)
CA (1)	CA1031075A (fr)
DE (1)	DE2520189C2 (fr)
FR (1)	FR2270723B1 (fr)
GB (1)	GB1502999A (fr)
IT (1)	IT1032815B (fr)
NL (1)	NL7505406A (fr)
SE (1)	SE401303B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3956700A (en) *	1975-04-18	1976-05-11	Bell Telephone Laboratories, Incorporated	Two-feedback-path delta modulation system with circuits for reducing pulse width modulation
NL7506986A (nl) *	1975-06-12	1976-12-14	Philips Nv	Deltamodulatie-codeerinrichting.
US4025852A (en) *	1975-10-14	1977-05-24	Bell Telephone Laboratories, Incorporated	Method and arrangement for controlling delta modulator idle-channel noise
US4048551A (en) *	1975-12-05	1977-09-13	Bell Telephone Laboratories, Incorporated	Battery charging circuit
US4048448A (en) *	1976-02-19	1977-09-13	Bell Telephone Laboratories, Incorporated	Multiparty telephone ringing
US4208740A (en) *	1978-12-20	1980-06-17	International Business Machines Corporation	Adaptive delta modulation system
US4406010A (en) *	1980-12-30	1983-09-20	Motorola, Inc.	Receiver for CVSD modulation with integral filtering
US4700362A (en) *	1983-10-07	1987-10-13	Dolby Laboratories Licensing Corporation	A-D encoder and D-A decoder system
US4646322A (en) *	1983-12-19	1987-02-24	Telex Computer Products, Inc.	Adaptive delta modulation codec
US4583237A (en) *	1984-05-07	1986-04-15	At&T Bell Laboratories	Technique for synchronous near-instantaneous coding
US4926178A (en) *	1988-07-13	1990-05-15	Analog Devices, Inc.	Delta modulator with integrator having positive feedback
US5471498A (en) *	1993-04-15	1995-11-28	National Semiconductor Corporation	High-speed low-voltage differential swing transmission line transceiver
DE69428045T2 (de) *	1993-06-08	2002-04-18	Nat Semiconductor Corp	Programmierbarer cmos bus- und übertragungsleitungstreiber
US5483184A (en) *	1993-06-08	1996-01-09	National Semiconductor Corporation	Programmable CMOS bus and transmission line receiver
US5543746A (en) *	1993-06-08	1996-08-06	National Semiconductor Corp.	Programmable CMOS current source having positive temperature coefficient
US5818260A (en) *	1996-04-24	1998-10-06	National Semiconductor Corporation	Transmission line driver having controllable rise and fall times with variable output low and minimal on/off delay
US6014093A (en) *	1998-02-27	2000-01-11	Hayes; Adam T.	Pulse coding system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3582784A (en) *	1968-10-18	1971-06-01	Bell Telephone Labor Inc	Delta modulation system
DE1951055C3 (de) *	1969-10-10	1981-10-01	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Schaltungsanordnung für die periodische Übertragung von Nachrichtensignalen mittels eines Impuls-Deltamodulator
US3624558A (en) *	1970-01-16	1971-11-30	Bell Telephone Labor Inc	Delta modulation encoder having double integration
US3815033A (en) *	1970-12-02	1974-06-04	Bell Telephone Labor Inc	Discrete adaptive delta modulation system
US3716803A (en) *	1971-12-27	1973-02-13	Bell Telephone Labor Inc	Stabilized delta modulator
DE2212668C3 (de) *	1972-03-16	1975-02-13	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Schaltungsanordnung für die Übertragung von Nachrichtensignalen mittels I mpuls- Deltamodulation
US3806806A (en) *	1972-11-20	1974-04-23	Bell Telephone Labor Inc	Adaptive data modulator

1974
- 1974-05-09 US US468449A patent/US3899754A/en not_active Expired - Lifetime
- 1974-12-27 CA CA216,966A patent/CA1031075A/fr not_active Expired
1975
- 1975-04-29 SE SE7505012A patent/SE401303B/xx not_active IP Right Cessation
- 1975-05-05 IT IT68143/75A patent/IT1032815B/it active
- 1975-05-05 BE BE156047A patent/BE828719A/fr not_active IP Right Cessation
- 1975-05-06 DE DE2520189A patent/DE2520189C2/de not_active Expired
- 1975-05-06 JP JP50054165A patent/JPS6013339B2/ja not_active Expired
- 1975-05-07 NL NL7505406A patent/NL7505406A/xx not_active Application Discontinuation
- 1975-05-07 GB GB19277/75A patent/GB1502999A/en not_active Expired
- 1975-05-07 FR FR7514382A patent/FR2270723B1/fr not_active Expired

Also Published As

Publication number	Publication date
DE2520189A1 (de)	1975-11-27
JPS6013339B2 (ja)	1985-04-06
SE401303B (sv)	1978-04-24
JPS50153860A (fr)	1975-12-11
IT1032815B (it)	1979-06-20
DE2520189C2 (de)	1983-01-13
US3899754A (en)	1975-08-12
BE828719A (fr)	1975-09-01
FR2270723A1 (fr)	1975-12-05
GB1502999A (en)	1978-03-08
NL7505406A (nl)	1975-11-11
CA1031075A (fr)	1978-05-09
AU8085975A (en)	1976-11-11

Legal Events

Date	Code	Title	Description
1988-03-25	ST	Notification of lapse

Publication	Publication Date	Title
FI753501A (fr)	1976-06-18
FR2295315B1 (fr)	1980-11-07
FR2270723B1 (fr)	1977-12-09
FR2270505A1 (fr)	1975-12-05
DK14975A (fr)	1975-09-22
FR2260874A1 (fr)	1975-09-05
JPS50126589A (fr)	1975-10-04
FR2269369A1 (fr)	1975-11-28
JPS50124214U (fr)	1975-10-11
JPS50124456A (fr)	1975-09-30
JPS50100441A (fr)	1975-08-09
JPS50113418A (fr)	1975-09-05
AR199810A1 (fr)	1974-09-30
JPS50101858U (fr)	1975-08-22
JPS50127073U (fr)	1975-10-18
JPS50117226A (fr)	1975-09-13
JPS50114186U (fr)	1975-09-17
JPS50105723U (fr)	1975-08-30
CH568428B5 (fr)	1975-10-31
BG21067A1 (fr)	1976-03-20
BG19764A1 (fr)	1975-10-10
BG19668A1 (fr)	1975-12-20
AU481663A (fr)	1976-07-22
BG21690A2 (fr)	1976-09-20
BG20668A2 (fr)	1975-12-20