Image reading apparatus and X-ray imaging apparatus

X-ray or gamma ray systems or devices – Electronic circuit – With display or signaling

Reexamination Certificate

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Details

C250S208100, C250S370140, C348S308000, C378S114000

Reexamination Certificate

active

07110498

ABSTRACT:
An image reading apparatus includes a DC/DC power supply which supplies power to at least part of the apparatus, a photodetector array including two-dimensionally arranged photoelectric conversion elements, and a line selector and reading circuit which read signals from the photoelectric conversion elements for each row in the photodetector array as a unit. A line driving signal in the line selector is set to be synchronized with a reference clock for defining the oscillation frequency of the DC/DC power supply and have a period of an integer multiple of the reference clock. A sample/hold signal for determining the timing at which a signal read from the photodetector array is sampled/held is output at a predetermined phase timing of each period of the line driving signal.

REFERENCES:
patent: 5886353 (1999-03-01), Spivey et al.
patent: 6084939 (2000-07-01), Tamura
patent: 2002/0000528 (2002-01-01), Imai
patent: 0 788 277 A 2 (1997-08-01), None
patent: 0 796 000 (1997-09-01), None
patent: 1 341 375 (2003-02-01), None
patent: 2002-341043 (2002-11-01), None
patent: 11 326527 (2003-03-01), None
patent: 2003-248060 (2003-09-01), None
European Search Report: Munich, Mar. 14, 2005.
English Abstract for Japan application 2002-341043.

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