Pulse or digital communications – Repeaters
Patent
1994-09-14
1997-04-22
Chin, Stephen
Pulse or digital communications
Repeaters
375215, 375220, 375372, 375377, 370545, 341 61, H04B 336
Patent
active
056235127
ABSTRACT:
On converting an input data signal having a first transmission rate into an output data signal having a second transmission rate different from the first transmission rate, the input data signal is memorized as a memorized input data signal a first memory. A read clock generating circuit generates a read clock signal to read the memorized input data signal as a read data signal out of the first memory. A read control circuit controls the read clock generating circuit to stop generation of the read clock signal in order to make the read data signal have an overhead bit slot at a predetermined period. A rate control circuit produces a rate control signal having a predetermined pattern and an inhibit signal in accordance with the rate control signal. The read clock generating circuit stops generation of the read clock signal in response to the inhibit signal. A multiplexing circuit multiplexes an information signal to the read data signal on the basis of the rate control signal to produce the output data signal. The information signal is representative of whether or not a specific overhead bit slot has a data bit of the input data signal.
REFERENCES:
patent: 4924459 (1990-05-01), Angell et al.
patent: 5434890 (1995-07-01), Kimura et al.
Chin Stephen
Le Amanda T.
NEC Corporation
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