Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2007-03-16
2010-06-08
Cao, Chun (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C375S220000, C375S256000
Reexamination Certificate
active
07734940
ABSTRACT:
A data communication device performs stable data communications without a malfunction in a system downsized by realizing bi-directional data communications using two terminals. The data communication device includes: a signal terminal (IN) for inputting a received signal having portions of different duty ratios and a constant pulse frequency; a reference voltage terminal (GND) for inputting a first reference voltage; a clock generation circuit for generating a clock signal according to the received signal; a data signal generation circuit for generating a data signal by identifying a duty ratio of the received signal; a transmission circuit for outputting a transmission signal to the signal terminal; and a regulator circuit for generating power supply voltages of the clock generation circuit, the data signal generation circuit, and the transmission circuit on a basis of an internally generated second reference voltage, the received signal, and the first reference voltage.
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Canon Kabushiki Kaisha
Cao Chun
Fitzpatrick ,Cella, Harper & Scinto
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