A Compact Implementation Scheme of 1-Dimensional PSDs with Double-Resolution Interpolation

Kunil CHOE  Gunhee HAN  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E89-C   No.12   pp.1958-1961
Publication Date: 2006/12/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e89-c.12.1958
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Integrated Electronics
Keyword: 
position sensitive detector,  double resolution,  interpolation,  CMOS image sensor,  pixel array,  WTA,  

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Summary: 
This paper proposes a compact interpolation scheme dedicated to a 1-dimensional position sensitive detector (PSD) with an optical sensing pixel array. The pixels are divided into even- and odd-numbered groups and winner take all (WTA) circuits are provided to each of the groups. The simulated results show that the detecting step-width is reduced to the half of the original one after applying the interpolation scheme.