Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2007-04-03
2007-04-03
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C327S077000, C327S551000, C327S567000
Reexamination Certificate
active
10917374
ABSTRACT:
A rectifier circuit is provided, which does not need a feedback function and prevents deterioration of a frequency characteristic, even if the rectifier circuit is configured with thin film transistors (TFTs). For example, the rectifier circuit is configured with an amplifier circuit, which compares an input signal with a voltage of a power source; a waveform shaping circuit for shaping a waveform of an output signal of the amplifier circuit; a resistor, which is connected to both an input terminal and output terminal; and a switching circuit, which is connected to both the output terminal and the power source, and is controlled by an output signal of the waveform shaping circuit. Then, either the input signal or the voltage of the power source is outputted in accordance with an operation of the switching circuit, so that the input signal is ideally rectified.
REFERENCES:
patent: 4560890 (1985-12-01), Masuda et al.
patent: 5579214 (1996-11-01), Kitani et al.
patent: 6890842 (2005-05-01), Sandhu et al.
Standard Text for OP-Amp Circuit Design, p. 316, Sep. 10, 1990.
Koyama Jun
Matsuzaki Takanori
Osada Takeshi
Callahan Timothy P.
Englund Terry L.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
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