Title:
固体撮像装置及び撮像システム
Document Type and Number:
Japanese Patent JP4290071
Kind Code:
B2
Abstract:
The number of necessary sampling and holding capacitors is reduced. A solid-state image pickup device has: signal lines (112 to 114) to which photoreceiving elements (101-a to 101-i) are connected; a clamp circuit that has clamp capacitors (102-a to 102-c) in which one terminal is connected to the signal lines and the other terminals are short-circuited, has a switch (103) for applying a reference voltage to the other terminals by the clamping operation, and adds signals from the plurality of photoreceiving elements provided in the row direction along with the clamping operation; adding means (switches 104 to 106, 108-a to 108-c, capacitors 107-a to 107-c) which is connected to the other terminals of the clamp capacitors, adds addition signals of the respective photoreceiving element rows outputted from the other terminals and adds the signals of the plurality of photoreceiving elements provided in the column direction; an amplifier (601) connected to the adding means; a switch (110) for resetting the input side of the amplifier; and circuit means (switches 602, 603, 606-a, 606-b, capacitors 604, 605) for outputting an offset of the amplifier and the signal from the amplifier.
Inventors:
Tomoyuki Noda
Shin Kikuchi
Shin Kikuchi
Application Number:
JP2004164637A
Publication Date:
July 01, 2009
Filing Date:
June 02, 2004
Export Citation:
Assignee:
Canon Inc
International Classes:
H01L27/146; H04N5/335; H04N5/343; H04N5/347; H04N5/357; H04N5/363; H04N5/369; H04N5/374; H04N5/376; H04N5/378; H04N9/07; H04N101/00
Domestic Patent References:
| JP6268920A | ||||
| JP2003224776A |
Attorney, Agent or Firm:
Jyohei Yamashita