Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2006-11-28
2006-11-28
Maung, Nay (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S222000, C455S278100, C455S283000, C455S297000, C365S194000
Reexamination Certificate
active
07142834
ABSTRACT:
An object is to provide a noise removing circuit that can be integrally formed on a semiconductor substrate and can improve the accuracy of noise component removal. The noise removing circuit comprises a highpass filter detecting a noise component included in an input signal, a pulse generating circuit generating a pulse signal corresponding to the detected noise component, an analog delaying circuit252delaying the input signal, and an outputting circuit removing the noise component included in the delayed signal according to the output timing of the pulse signal. The analog delaying circuit252delays the output timing of the input signal by making switches51to56electrically continuous in a sequential order, by holding the voltage of the input signal at each time point in a plurality of capacitors81to86, and by extracting the held voltage before being updated by making switches61to66electrically continuous.
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Kabushiki Kaisha Toyota Jidoshokki and Niigata Seimitsu Co., Ltd
Maung Nay
Nguyen Tuan H.
Woodcock & Washburn LLP
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