Open AccessGlobal shutter‐mesh architecture with surround‐boosted driving scheme for time‐of‐flight depth sensors
Author(s) -
Choi Jaehyuk,
Shin Jungsoon,
Kang Byongmin
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.4392
Subject(s) - shutter , modulation (music) , rolling shutter , computer science , boosting (machine learning) , electronic engineering , optics , computer vision , artificial intelligence , engineering , physics , acoustics
Presented is an architecture with mesh‐structured electronic shutters and surround shutter drivers with positive/negative boosting to enhance the depth accuracy in three‐dimensional (3D) depth sensors with a time‐of‐flight (TOF) measurement scheme. High‐frequency modulation in the TOF scheme degrades the charge‐transfer efficiency in high‐resolution sensors because of the large parasitic resistance and the capacitance of the electronic shutters and shutter lines. This degradation suppresses modulation contrast, which induces depth errors. The global shutter‐mesh architecture and surround‐boosted driving scheme is implemented for high‐modulation contrast in large‐format depth sensors with a 1280 × 960 resolution.