Title:
IMAGING ELEMENT, IMAGING METHOD, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/158315
Kind Code:
A1
Abstract:
The present technology relates to an imaging element, an imaging method, and an electronic device, with which the occurrence of errors in A/D conversion can be reduced. The imaging element is equipped with: a pixel array in which are arranged unit pixels containing photoelectric conversion elements for converting incident light to electricity; a reference signal input unit for generating a reference signal; a comparison unit for comparing a prescribed voltage and an analog signal output from the unit pixels of the pixel array or from the reference signal input unit; a switching unit for switching a reference voltage supplied to the comparison unit, thereby connecting to the comparison unit any one of multiple reference voltages having mutually different degrees of grayscale precision; a measurement unit for measuring the change timing of the result of the comparison of the analog signal and the reference voltage supplied to the comparison unit by means of the switching control of the switching unit; a correction unit for performing a correction process so as to reduce a gain error or an offset error between comparisons results obtained with the reference voltage having mutually different degrees of grayscale precision; and a reference signal adjustment unit for adjusting the reference signal level of the reference signal input unit to a different grayscale precision switching level. The present technology can be applied to imaging elements and imaging devices.
Inventors:
KATO YURI (JP)
OIKE YUSUKE (JP)
OIKE YUSUKE (JP)
Application Number:
PCT/JP2016/057740
Publication Date:
October 06, 2016
Filing Date:
March 11, 2016
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N5/378; H04N5/357; H04N5/374
Foreign References:
| JP2013251677A | 2013-12-12 | |||
| JP2013229853A | 2013-11-07 | |||
| JP2014220663A | 2014-11-20 | |||
| JP2013236362A | 2013-11-21 |
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
Nishikawa 孝 (JP)
Nishikawa 孝 (JP)
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