Oscillators – With synchronizing – triggering or pulsing circuits – Triggering or pulsing
Reexamination Certificate
2008-03-26
2010-02-23
Mis, David (Department: 2817)
Oscillators
With synchronizing, triggering or pulsing circuits
Triggering or pulsing
C331S057000, C455S073000, C455S090100
Reexamination Certificate
active
07667549
ABSTRACT:
A low-power-consumption semiconductor device and a driving method thereof where a clock signal generation is controlled. A transmission and reception control circuit to control signal communication with an outside; a ring oscillator control circuit to detect an edge in a receiving signal and control a ring oscillator; a clock generation circuit to generate a clock signal based on the ring oscillator; and a logic circuit to operate based on a clock signal are included. During signal communication between the transmission and reception control circuit and the outside, the ring oscillator operates and a clock signal is output from the clock generation circuit when the ring oscillator control circuit detects an edge in a receiving signal, and the ring oscillator stops and output of the clock signal from the clock generation circuit stops when transmission of a reply signal from the transmission and reception control circuit to the outside is terminated.
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'Search Report (Application No. 08005882.9) Dated Sep. 4, 2009.
Mis David
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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