Method and apparatus for setting asynchronous transmission chara

Details Method and apparatus for setting asynchronous transmission chara Method and apparatus for setting asynchronous transmission chara

1992-05-01

1994-11-22

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375121, 370 91, 371 493, H04L 700

Patent

active

053675410

ABSTRACT:
Method for setting the asynchronous transmission characteristics in a telecommunication equipment including a Serial Communication Controller (SCC) operating at different transmission rates, parity modes and numbers of bit per character. The method according to the present invention involves the step of setting the SCC at the higher communication rate in a none parity mode with a number of 8 bits per character. There is received a predetermined sequence of characters consisting in a succession of "Carriage Return" (CR) and "." characters. The method further involves the step of processing at least three received characters (CR, ., CR) involving the step of analyzing said received characters by comparing them with predetermined values simultaneous with the detection of parity errors, the processing step further involving the step of setting in responsive to the analyzing step, the SCC with the actual number of bits per character and the real parity mode which is used in the asynchronous transmission.

REFERENCES:
patent: 4663766 (1987-05-01), Bremer
patent: 5008902 (1991-04-01), Key et al.
patent: 5161163 (1992-11-01), Bossen et al.
patent: 5195093 (1993-03-01), Tarrab et al.
patent: 5222081 (1993-06-01), Lewis et al.

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