Pulse or digital communications – Testing – Data rate
Reexamination Certificate
2005-12-06
2005-12-06
Fan, Chieh M. (Department: 2638)
Pulse or digital communications
Testing
Data rate
C375S224000
Reexamination Certificate
active
06973125
ABSTRACT:
An apparatus and a method for detecting a data transmission rate by recognizing an amount of real-time transmitted data and a changed amount of the data so as to allocate an appropriate bandwidth required to transmit/receive data in a system in which a serial bus such as an IEEE 1394 is implemented, are provided. The apparatus includes a data transmission rate detecting unit for bit stream data; a sampler; a low-pass filter for low-pass filtering a value sampled by the sampler; an error detecting unit for detecting an error value in the data transmission rate; a first comparing unit for comparing the error value detected by the error detecting unit with a reference error level; an estimated data transmission rate output unit for outputting an estimated data transmission rate; and a second comparing unit for outputting the estimated data transmission rate, for efficient bandwidth operation of the serial bus.
REFERENCES:
patent: 4887280 (1989-12-01), Reisenfeld
patent: 5612966 (1997-03-01), Lee
patent: 5657347 (1997-08-01), Mori
patent: 5825761 (1998-10-01), Tanaka et al.
patent: 6167079 (2000-12-01), Kinnunen et al.
Fan Chieh M.
Perilla Jason M.
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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