Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Patent
1997-09-17
1999-08-03
Shah, Kamini
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
326 86, 326 21, H03K 190185
Patent
active
059337990
ABSTRACT:
There is provided a bus receiver including a first differential amplifier comparing an input signal to a first reference voltage, and transmitting a first pulse signal accordingly, a second differential amplifier comparing the input signal to a second reference voltage, and transmitting a second pulse signal accordingly, an exclusive OR circuit transmitting an exclusive OR pulse signal indicative of exclusive OR of the first and second pulse signals, a first flip-flop circuit receiving the exclusive OR pulse signal as clock, and receiving the second pulse signal as data, and a selector selecting one of the first and second pulse signals in accordance with an output of the first flip-flop circuit. The bus receiver readily eliminates noises. The bus receiver may further include a second flip-flop circuit receiving external clock as clock, and receiving an output of the selector as data. The provision of the second flip-flop circuit ensures that the bus receiver can be readily synchronized with other circuits electrically connected to the bus receiver and designed to operate under the same external clocks as those for the bus receiver.
REFERENCES:
patent: 5646553 (1997-07-01), Mitchell et al.
patent: 5729152 (1998-03-01), Leung et al.
patent: 5818261 (1998-11-01), Perner
NEC Corporation
Shah Kamini
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