BE788949A - Procede d'essai de modulateur-demodulateur - Google Patents

Procede d'essai de modulateur-demodulateur

Info

Publication number: BE788949A
Authority: BE; Belgium
Prior art keywords: modulator; test process; demodulator; demodulator test; test
Prior art date: 1971-11-01

Application number

Other languages

English (en)

Inventor

R A Liberman

W Ch Bond

E J Soltysiak

Original Assignee

Gen Datacomm Ind 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.)

1971-11-01

Publication date

1973-03-19

1973-03-19 Publication of BE788949A publication Critical patent/BE788949A/fr

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/24—Testing correct operation
- H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
- H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/24—Testing correct operation

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Maintenance And Management Of Digital Transmission (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Bidirectional Digital Transmission (AREA)
Communication Control (AREA)
Mechanical Operated Clutches (AREA)
Telephonic Communication Services (AREA)

BE788949D 1971-11-01 Procede d'essai de modulateur-demodulateur BE788949A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US19427071A	1971-11-01	1971-11-01

Publications (1)

Publication Number	Publication Date
BE788949A true BE788949A (fr)	1973-03-19

Family

ID=22716941

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE788949D BE788949A (fr)	1971-11-01		Procede d'essai de modulateur-demodulateur

Country Status (8)

Country	Link
US (1)	US3769454A (fr)
JP (1)	JPS5644621B2 (fr)
BE (1)	BE788949A (fr)
CA (1)	CA964593A (fr)
DE (1)	DE2248234C2 (fr)
FR (1)	FR2159877A1 (fr)
GB (2)	GB1401670A (fr)
IT (1)	IT975316B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3952163A (en) *	1972-04-24	1976-04-20	General Datacomm Industries, Inc.	Method and apparatus for testing in FDM system
US4039751A (en) *	1972-04-24	1977-08-02	General Datacomm Industries, Inc.	Method and apparatus for closed loop testing of first and second modulators and demodulators
US3937882A (en) *	1974-04-11	1976-02-10	Vadic Corporation	Full-duplex communication system on a two wire line
US3908086A (en) *	1974-06-03	1975-09-23	Redactron Corp	Method for establishing a data communication connection between two full duplex modems
DE2522725C3 (de) *	1975-05-22	1979-02-22	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Verfahren zur Fehlererkennung in einem Fahrzeugortungssystem
GB1540900A (en) *	1975-06-30	1979-02-21	Ericsson L M Pty Ltd	Digital testing and power control in a digital communication system
US4095045A (en) *	1977-01-19	1978-06-13	General Datacomm Industries, Inc.	Method and apparatus for signaling in a communication system
FR2478910A1 (fr)	1980-03-18	1981-09-25	Trt Telecom Radio Electr	Systeme de telelocalisation de repeteurs
US4383312A (en) *	1980-11-28	1983-05-10	The United States Of America As Represented By The Secretary Of The Navy	Multiplex system tester
US4471489A (en) *	1981-03-19	1984-09-11	General Datacomm Industries, Inc.	Automatic answer/originate mode selection in modem
RU2147791C1 (ru) *	1998-08-17	2000-04-20	Пензенский научно-исследовательский электротехнический институт	Дуплексный модем
RU2218666C2 (ru) *	2001-10-15	2003-12-10	Федеральное государственное унитарное предприятие "Пензенский научно-исследовательский электротехнический институт"	Цифровой модем
KR100467587B1 (ko) *	2002-06-07	2005-01-24	삼성전자주식회사	팩시 밀리의 자기 진단 방법 및 이 방법을 수행하는팩시밀리

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3571530A (en) *	1965-05-27	1971-03-16	Bell Telephone Labor Inc	System for remote testing of telephone subscribers{3 {0 lines
US3622877A (en) *	1969-11-07	1971-11-23	Sanders Associates Inc	Apparatus for testing modulator demodulator units for transmission errors and indicating the errors per power of 10
US3655915A (en) *	1970-05-07	1972-04-11	Gen Datacomm Ind Inc	Closed loop test method and apparatus for duplex data transmission modem

0
- BE BE788949D patent/BE788949A/fr unknown
1971
- 1971-11-01 US US00194270A patent/US3769454A/en not_active Expired - Lifetime
1972
- 1972-06-21 CA CA145,291A patent/CA964593A/en not_active Expired
- 1972-06-26 GB GB84575A patent/GB1401670A/en not_active Expired
- 1972-06-26 GB GB2981072A patent/GB1401669A/en not_active Expired
- 1972-09-18 FR FR7233035A patent/FR2159877A1/fr not_active Withdrawn
- 1972-10-02 DE DE2248234A patent/DE2248234C2/de not_active Expired
- 1972-10-20 JP JP10458172A patent/JPS5644621B2/ja not_active Expired
- 1972-10-20 IT IT70309/72A patent/IT975316B/it active

Also Published As

Publication number	Publication date
GB1401670A (en)	1975-07-16
DE2248234C2 (de)	1982-12-16
DE2248234A1 (de)	1973-05-10
JPS4853613A (fr)	1973-07-27
JPS5644621B2 (fr)	1981-10-21
US3769454A (en)	1973-10-30
FR2159877A1 (fr)	1973-06-22
GB1401669A (en)	1975-07-16
CA964593A (en)	1975-03-18
IT975316B (it)	1974-07-20

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