Title:
固体撮像素子の信号処理装置及び方法並びに撮像装置
Document Type and Number:
Japanese Patent JP4363308
Kind Code:
B2
Abstract:
A column amplifier system C-MOS image sensor can reliably eliminate vertical stripe noises if there are variances in terms of operational linearity. The present invention provides a signal processing apparatus to be used for a solid-state image pickup element having in the inside thereof a plurality of output systems for outputting video signals obtained from pixels arranged in the column direction, the apparatus including an amendment unit that amends an error value of each column in the video signals output from the solid-state image pickup element, a subtraction unit that subtracts the error value amended by the amendment unit for each column from the video signals output from the solid-state image pickup element, and an error value computing unit that computes the error value of each column by conducting a process of shielding the solid-state image pickup element from light or irradiating light to the solid-state image pickup element at a constant rate, computes an average value of the pixel signals obtained from the pixels in a predetermined region of the solid-state image pickup element, subtracts the average value from the pixel signal obtained from each pixel of the solid-state image pickup element and accumulates the values obtained by the subtractions for respective columns in advance of an image pickup operation.
Inventors:
Original science
Takahiro Ikeyama
Kazunari Takahashi
Yoshide Nishide
Takahiro Ikeyama
Kazunari Takahashi
Yoshide Nishide
Application Number:
JP2004319556A
Publication Date:
November 11, 2009
Filing Date:
November 02, 2004
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N5/335; H04N5/365; H04N5/369; H04N5/374
Domestic Patent References:
| JP3085972A | ||||
| JP10313428A | ||||
| JP2003018475A |
Attorney, Agent or Firm:
Akira Koike
Seiji Iga
Toshiya Fujii
Nobuhiro Noguchi
Yusei Atsuya
Seiji Iga
Toshiya Fujii
Nobuhiro Noguchi
Yusei Atsuya