Title: Multiple block binary synchronous duplex communications system and its method of operation

Abstract: A multiple block binary synchronous duplex communications system provides for the orderly transfer of data from one location to another utilizing communications facilities. This communications system increases the efficiency of data links with long propagation delays or with long processing times at either end by maintaining a continuous flow of data and responses in both directions. The memory of the communications link is kept full at all times. Data is transmitted in blocks including an identification code. The received data is checked for errors. When errors occur the transmission of data is not stopped; data is continuously transmitted and signals are returned including the block identification of the block containing the error. The block containing the error is then retransmitted when the transmitting station of the communications system is available for this task.

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Inventors: Tooley, John R. (Austin, TX, US)
Scott, Larry D. (Austin, TX, US)
Chalkley, Hatcher E. (Austin, TX, US)

Application Number: 554817
Filing Date: 1975-03-03
Publication_date: 1976-09-07
Assignee: Texas Instruments Incorporated (Dallas, TX)
Primary Class(es): 714/748 370/276
Other Classes:
US Patent Ref:

3456239	Jul, 1969	Glasson	340/146.
3473150	Oct, 1969	McClelland	340/146.
3605091	Sep, 1971	Tong	340/146.
3646518	Feb, 1972	Weinstein	340/146.
3671945	Jun, 1972	Maggi, Jr.	340/146.
3676846	Jul, 1972	Busch	340/146.

Other Refs: 1,224,388888,983

Mar, 1971	UK
Feb, 1962	UK

Primary Examiner: Atkinson, Charles E.
Assistant Examiner:
Attorney: Levine; Hal, Heiting; Leo N., Grossman; Rene' E.