Semiconductor device

Details Semiconductor device Semiconductor device

2006-10-17

2006-10-17

Vu, Ngoc-Yen (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S222100, C250S208100

Reexamination Certificate

active

07123302

ABSTRACT:
A semiconductor device equipped with an area sensor2including a plurality of image sensors S11–Smn outputting analog image signals corresponding to the amount of received light; an A/D conversion section4including a signal latch section3latching the analog image signals, a counter6that successively increments integer values and outputs the same, a sweep signal generation section7outputting sweep signals whose potential rises in a polygonal line with respect to the integer values, comparators C1–Cn comparing the analog image signals and the sweep signals, and outputting high level signals when the sweep signals are greater than the analog image signals, and latches L1–Ln latching and outputting integer values when signals output from the comparators C1–Cn become a high level; and a signal latch section5latching digital image data output from the A/D conversion section4and outputting the same.

REFERENCES:
patent: 5801657 (1998-09-01), Fowler et al.
patent: 6525304 (2003-02-01), Merrill et al.
patent: 2005/0036041 (2005-02-01), Gallagher et al.
patent: 54-93349 (1979-07-01), None
patent: 05-110440 (1993-04-01), None
patent: 09-238286 (1997-09-01), None
G.L. Engel “Switched-capacitor Logarithmic DAC”, Electronics Letters, vol. 35 No. 2, Jan. 21, 1999, pp. 111-112.
Communication from Japanese Patent Office re: related application.

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