Stray-insensitive, leakage-independent image sensing with reduced sensitivity to device mismatch and parasitic routing capacitance

A single capacitor (C) can be used for both readout and noise reduction in an imaging sensor. This dual-purpose use of the single capacitor is facilitated by a switching arrangement ( 1- 5) which connects the capacitor to a low impedance node (n7, n41) during charge storage. The low impedance node i...

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Bibliographic Details
Main Authors CHEN ZHILIANG JULIAN, ZHANG ZHENGWEI
Format Patent
LanguageEnglish
Published 22.08.2002
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A single capacitor (C) can be used for both readout and noise reduction in an imaging sensor. This dual-purpose use of the single capacitor is facilitated by a switching arrangement ( 1- 5) which connects the capacitor to a low impedance node (n7, n41) during charge storage. The low impedance node is also used to drive a column readout line (Vout).
Bibliography:Application Number: US20000748799