| US 7,528,878 B2 | ||
| Solid state image device and camera using it | ||
| Toshiaki Sato, Shizuoka-ken (Japan); and Kazuhiro Saito, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Aug. 31, 2005, as Appl. No. 11/214,947. | ||
| Claims priority of application No. 2004-255693 (JP), filed on Sep. 02, 2004; and application No. 2005-192013 (JP), filed on Jun. 30, 2005. | ||
| Prior Publication US 2006/0044627 A1, Mar. 02, 2006 | ||
| Int. Cl. H04N 3/14 (2006.01) | ||
| U.S. Cl. 348—317 [348/294] | 2 Claims |
| 1. A solid state image device with a photoelectric conversion unit having a plurality of pixels two-dimensionally arranged
and a read out unit for sequentially reading out outputs of the photoelectric conversion unit, the solid state image device
comprising:
a frame memory having a plurality of memory elements;
a recorder for recording a signal of each pixel of the photoelectric conversion unit into the plurality of memory elements
of the frame memory; and
a line memory unit and a horizontal scanning unit for reading out signals recorded in the frame memory, wherein
each of the plurality of memory elements is configured with two sample hold circuits each connected in series via switches,
with each sample hold circuit including a capacitor and an impedance conversion unit, and with the impedance conversion unit
being configured with an operational amplifier,
the photoelectric conversion unit and the frame memory are driven by at least a vertical scanning unit,
each pixel of the photoelectric conversion unit corresponds one-to-one with each memory element of the frame memory, such
that each memory element records an output of a corresponding pixel.
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