FR79897E - Data transmission system, in particular over telephone lines - Google Patents

Data transmission system, in particular over telephone lines

Info

Publication number
FR79897E
FR79897E FR863644A FR863644A FR79897E FR 79897 E FR79897 E FR 79897E FR 863644 A FR863644 A FR 863644A FR 863644 A FR863644 A FR 863644A FR 79897 E FR79897 E FR 79897E
Authority
FR
France
Prior art keywords
data transmission
transmission system
telephone lines
particular over
over telephone
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
FR863644A
Other languages
French (fr)
Inventor
Esmond Philip Goodwin Wright
Hugh Spence Leman
Robert Philip Walters
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR79897E publication Critical patent/FR79897E/en
Expired legal-status Critical Current

Links

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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/14—Arrangements for detecting or preventing errors in the information received by using return channel in which the signals are sent back to the transmitter to be checked ; echo systems
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
FR863644A 1960-06-24 1961-06-01 Data transmission system, in particular over telephone lines Expired FR79897E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2222160A GB910453A (en) 1960-06-24 1960-06-24 Improvements in or relating to data transmission systems

Publications (1)

Publication Number Publication Date
FR79897E true FR79897E (en) 1963-02-08

Family

ID=10175885

Family Applications (4)

Application Number Title Priority Date Filing Date
FR850322A Expired FR1277853A (en) 1960-06-24 1961-01-20 Data transmission system, in particular over telephone lines
FR863644A Expired FR79897E (en) 1960-06-24 1961-06-01 Data transmission system, in particular over telephone lines
FR865900A Expired FR80017E (en) 1960-06-24 1961-06-23 Data transmission system, in particular over telephone lines
FR865901A Expired FR80018E (en) 1960-06-24 1961-06-23 Data transmission system, in particular over telephone lines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR850322A Expired FR1277853A (en) 1960-06-24 1961-01-20 Data transmission system, in particular over telephone lines

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR865900A Expired FR80017E (en) 1960-06-24 1961-06-23 Data transmission system, in particular over telephone lines
FR865901A Expired FR80018E (en) 1960-06-24 1961-06-23 Data transmission system, in particular over telephone lines

Country Status (6)

Country Link
BE (1) BE605312R (en)
CH (1) CH389287A (en)
DE (1) DE1154657B (en)
FR (4) FR1277853A (en)
GB (3) GB959555A (en)
NL (2) NL260263A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270251A (en) * 1960-10-14
US3311879A (en) * 1963-04-18 1967-03-28 Ibm Error checking system for variable length data
DE1230847B (en) * 1963-05-30 1966-12-22 Einer Victor Lous Procedure and arrangement for forwarding corrected information
US3805234A (en) * 1972-07-31 1974-04-16 Westinghouse Electric Corp Digital data transmission system
US4121052A (en) * 1976-01-26 1978-10-17 Richard Herbert L Telephone data recording system
GB2313747A (en) * 1996-05-30 1997-12-03 Motorola Ltd Data transmission verification
DE19701725C1 (en) * 1997-01-20 1998-06-18 Bosch Gmbh Robert Frequency diplexer
DE102005034506B4 (en) 2005-07-20 2007-11-22 Infineon Technologies Ag Method and system for troubleshooting

Also Published As

Publication number Publication date
FR1277853A (en) 1961-12-01
GB959555A (en) 1964-06-03
CH389287A (en) 1965-03-15
DE1154657B (en) 1963-09-19
FR80017E (en) 1963-03-01
BE605312R (en) 1961-12-27
FR80018E (en) 1963-03-01
GB910453A (en) 1962-11-14
NL265526A (en)
GB950739A (en) 1964-02-26
NL260263A (en)

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