Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2007-09-13
2009-02-24
Cox, Cassandra (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S096000
Reexamination Certificate
active
07495479
ABSTRACT:
Disclosed is a sample and hold circuit for detecting a parameter of a data signal, which includes: a first switching module, wherein the sample and hold circuit samples the data signal according to the turning on or off of the first switching module; at least one capacitor, coupled to the first switching module; a second switching module, coupled to the capacitor; a controllable reference voltage source, for providing a first reference voltage to charge/discharge the capacitor via the second switching module according to a control signal; a first comparator, coupled to the capacitor, for comparing a voltage drop on the capacitor and the first reference voltage to generate a first comparing result; and a control circuit, coupled to the controllable reference voltage source and the first comparator, for generating the control signal according to the comparing results.
REFERENCES:
patent: 7177610 (2007-02-01), Scott et al.
patent: 7279941 (2007-10-01), Yonezawa et al.
patent: 7312783 (2007-12-01), Oyama
patent: 7332916 (2008-02-01), Nagata
patent: 2003/0117676 (2003-06-01), Nakamura et al.
patent: 2007/0052452 (2007-03-01), Chou et al.
Chang Yeong-Jar
Hsu Jen-Chien
Lu Hung-Wen
Su Chau-Chin
Cox Cassandra
Faraday Technology Corp.
Hsu Winston
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