Modulator and demodulator (MODEM)

Details Modulator and demodulator (MODEM) Modulator and demodulator (MODEM)

1996-06-13

1999-08-31

Tse, Young T.

Pulse or digital communications

Transceivers

Modems

H04B 138

Patent

active

059463481

ABSTRACT:
A MODEM can shorten the processing time of an interface disposed between a data terminal equipment (DTE) and the MODEM. The MODEM stores an object program of a procedure in a memory and switches an operational mode of the MODEM automatically corresponding to the prescribed procedure thereby executing the procedure corresponding to the current operational mode. The MODEM further comprises a timer which monitors the transits time between a completed procedure and the next procedure, and the MODEM starts the process of a specified operational mode based on a mode-setting-instruction of the procedure as well as monitoring the transitions time by using the timer, and executing a next specified operational mode when the timer times out, thereby allowing the MODEM to perform the various operational mode switches.

REFERENCES:
patent: 5054020 (1991-10-01), Meagher
patent: 5268928 (1993-12-01), Herh et al.
patent: 5359709 (1994-10-01), Blanc et al.
patent: 5384822 (1995-01-01), Brown et al.
patent: 5450530 (1995-09-01), Snyder et al.
patent: 5657345 (1997-08-01), Lazaridis
patent: 5711012 (1998-01-01), Bottoms et al.

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