Pulse or digital communications – Testing
Patent
1995-06-07
1997-04-08
Chin, Stephen
Pulse or digital communications
Testing
375225, 370241, H04B 346
Patent
active
056195320
ABSTRACT:
A digital communication system includes a first station, a second station and a network therebetween. The first station includes a clock selecting device for selecting one clock from a plurality of different clocks; and a transmitting device for transmitting frames to the second station based on the selected clock. The second station includes an evaluating device for evaluating transmission quality of data in each of the frames received from the first station; and a quality message inserting device for inserting the evaluated transmission quality as a quality message into a part of the corresponding frame to be transmitted to the first station. The first station further includes a message processing device for extracting the quality message from each received frame to convert the extracted quality message into a corresponding message signal to output the message signal; and a control device for causing the clock selecting device to select a clock corresponding to the message signal output from the message processing device.
REFERENCES:
patent: 4991184 (1991-02-01), Hashimoto
patent: 5245633 (1993-09-01), Schwartz et al.
patent: 5253270 (1993-10-01), Petit
Aono Hironori
Kinoshita Toshiaki
Tani Shigeo
Yamanaka Katsuaki
Chin Stephen
Fujitsu Limited
Ghebretinsae T.
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