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Copyright © 2015 TOSHIBA TELI CORPORATION, All rights reserved.
Doc. No. 4300-0223
Basic of electronic shutter (shutter, reset)
Shutter mode
Assigning exposure time to sensor
Global shutter
;
Shutter mode which takes image by exposure for all pixels (1 frame) in one time
Applied to CCD sensor and some of CMOS sensor
Stable imaging for Motion picture and still picture
Rolling shutter
;
Shutter mode which has different exposure timing on each line. Most of CMOS sensors are
applied.
Digital camera, mobile phone, smart phone, web camera, low cost monitor camera, mobile
camera etc.
Disadvantage of distortive image in motion picture
Reset mode
Action of clearing the
information
(charge, electron)
in sensor before
taking fresh image
Global reset
;
A mode of reset which reset all pixels in one time
Rolling reset
;
This resets on each line.
Sensor operation :
reset
➡
exposure
➡
reset
➡
exposure
➡・・・
Repeating above
2015/12/25
