Title :
A novel bipolar imaging device with self-noise-reduction capability
Author :
Tanaka, Nobuyoshi ; Ohmi, Tadahiro ; Nakamura, Yoshio
Author_Institution :
Canon Inc., Kanagawa, Japan
fDate :
1/1/1989 12:00:00 AM
Abstract :
A bipolar image sensor with charge amplification and noise-reduction capabilities in each unit cell is discussed. The dynamic range of linearity in the photoelectric conversion characteristics has been greatly extended by using capacitor-loaded emitter-follower circuitry and a readout operation in a deep forward-base-emitter-biasing condition. The fixed pattern noise and the random noise are reduced by introducing a hybrid reset operation that is a combination of the clamp reset and the transient reset
Keywords :
bipolar integrated circuits; image sensors; interference suppression; random noise; bipolar image sensor; capacitor-loaded emitter-follower circuitry; charge amplification; clamp reset; deep forward-base-emitter-biasing condition; dynamic range of linearity; fixed pattern noise; hybrid reset operation; noise-reduction capabilities; photoelectric conversion characteristics; random noise; readout operation; transient reset; Charge coupled devices; Circuit noise; Dynamic range; Image converters; Image sensors; Linearity; Noise reduction; Phototransistors; Semiconductor device noise; Voltage;
Journal_Title :
Electron Devices, IEEE Transactions on
