Television – Camera – system and detail – Solid-state image sensor
Reexamination Certificate
2005-06-07
2005-06-07
Garber, Wendy R. (Department: 2612)
Television
Camera, system and detail
Solid-state image sensor
Reexamination Certificate
active
06903771
ABSTRACT:
Disclosed is an image pickup apparatus, which comprises a two-dimensional image pickup area, a vertical line selector for selecting a reading row in said image pickup area, a plurality of vertical signal lines arranged in columnar direction, for reading a detection signal emitted by a photodiode located in a selected row, and a horizontal selection transistor for continuously reading detection signals carried by the vertical signal lines and writing the signals to a horizontal signal line arranged like a row in a matrix, wherein a noise canceling circuit that employs a capacitor to suppress noise that appears on the vertical signal lines is provided between the vertical signal lines and the horizontal selection transistor, wherein an impedance conversion unit is provided between the vertical signal lines and the capacitor of the noise canceling circuit, and wherein a constant current element for supplying a bias current and a switch for changing the output current of a constant current element are provided to the impedance conversion unit.
REFERENCES:
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patent: 5998818 (1999-12-01), Kumagai et al.
patent: 2002/0149688 (2002-10-01), Matsunaga et al.
patent: 2003/0179304 (2003-09-01), Kuroda et al.
patent: 8-18866 (1996-01-01), None
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Garber Wendy R.
Whipkey Jason
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