*United States Patent *     * 
<http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7084915.PN.&OS=PN/7084915&RS=PN/7084915#h0>7,084,915*
 

* Sato *        * August 1, 2006 *

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Apparatus for driving an image device

*Abstract*

An apparatus, which drives an imaging device of a full frame transfer 
type, comprises an accumulating period calculating processor and a 
voltage control processor. In the imaging device, a light receiving 
element and a vertical transfer passage are common. The accumulating 
period calculating processor obtains an accumulating period, for which a 
signal charge is accumulated in the light receiving element, by a 
calculation. The light receiving element is provided with first and 
second electrodes to which voltages are applied. During the accumulating 
period, the voltage control processor fixes a voltage level of the first 
electrode and changes periodically a voltage level of the second 
electrode in accordance with a length of the accumulating period, so 
that a charge pumping operation is performed.

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Inventors:      *Sato; Koichi* (Saitama, *JP*)
Assignee:       *PENTAX Corporation* (Tokyo, *JP*)
Appl. No.:      *09/579,466*
Filed:  *May 26, 2000*




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