Title:
SOLID-STATE IMAGING DEVICE, CODE CONVERSION DEVICE, CODE CONVERSION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/026610
Kind Code:
A1
Abstract:
The present invention enables a code to be utilized, in which the Hamming distance in an arbitrary code length is always 1. This solid-state imaging device (1) is provided with: a plurality of pixels (121), a comparator (215) which compares a pixel signal with a reference signal; and a counter (207) which counts a time until levels of the pixel signal and the reference signal are the same. The counter includes: a first calculation unit (233) which calculates a comparison value by right-shifting, by one bit, a maximum value that represents, with an n-bit binary code, a number obtained by subtracting 1 from an even code length of 2 to 2n; a first selection unit (239) which outputs, as a third value, any one among a first value and a second value obtained by subtracting the first value from the maximum value on the basis of a comparison result between the comparison value and the first value that is any one from 0 to the maximum value represented with the n-bit binary code; and a second calculation unit (241) which converts the third value from the n-bit binary code to an n-bit Gray code, and generates, on the basis of the comparison result, a pseudo code by setting 0 or 1 to the most significant bit of the Gray code.
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Inventors:
KATAYAMA ISAO (JP)
Application Number:
PCT/JP2019/023732
Publication Date:
February 06, 2020
Filing Date:
June 14, 2019
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H04N5/378; H03M1/56; H03M7/16
Foreign References:
| US7518535B1 | 2009-04-14 | |||
| US20090295608A1 | 2009-12-03 | |||
| JP2010268302A | 2010-11-25 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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