Synchronous flow control method

Details Synchronous flow control method Synchronous flow control method

1993-06-16

1994-11-22

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375106, 375118, 375121, H04B 138, H04L 2536

Patent

active

053675347

ABSTRACT:
A flow control method (200) is suitable for use with a synchronous modem (101). The modem clocks data signals (107) from the terminal under control of a clock signal (109) supplied by the modem. The clock signal operates at a clock rate. The modem stores the data signals in a buffer (111), and thereupon transmits the data signals to a channel, the channel operating at a channel rate. When the quantity of data signals stored in the buffer exceeds a maximum threshold, the modem removes the clock signal from the terminal, thereby interrupting the flow of data signals from the terminal. When the quantity of data signals stored in the buffer is less than a minimum threshold, the modem again applies the clock signal to the terminal, thereby restoring the flow of data signals from the terminal.

REFERENCES:
patent: 4847867 (1989-07-01), Nasu et al.
patent: 4884269 (1989-11-01), Duncanson et al.
patent: 4964141 (1990-10-01), Matsushima et al.
patent: 5033064 (1991-07-01), Upp
patent: 5099477 (1992-03-01), Taniguchi et al.
patent: 5138634 (1992-08-01), Knapp

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