Title:
DISTANCE MEASUREMENT DEVICE, DISTANCE MEASUREMENT METHOD, AND DISTANCE MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/159289
Kind Code:
A1
Abstract:
The present invention relates to a distance measurement device, distance measurement method, and distance measurement system that make it possible to increase the overall operation speed of a TOF sensor by increasing the speed of operation of an A/D converter. In a distance measurement device in one aspect of the present invention, a light reception unit has a plurality of A/D conversion units for subjecting pixel signals read from pixels to A/D conversion. The A/D conversion units switch between first A/D conversion having a precision of a first number of bits and second A/D conversion having a precision of a second number of bits larger than the first number of bits. A calculation unit measures the distance to the object using the results of the first or second A/D conversion by the A/D conversion units. The present invention can be applied to, for example, a vehicle-mounted TOF sensor.
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Inventors:
NAMBA KAZUHIDE (JP)
Application Number:
PCT/JP2018/004984
Publication Date:
September 07, 2018
Filing Date:
February 14, 2018
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S17/894; G01S7/4865; G01S17/931; G01S17/87
Domestic Patent References:
| WO2014207983A1 | 2014-12-31 | |||
| WO2016208215A1 | 2016-12-29 |
Foreign References:
| JP2644895B2 | 1997-08-25 | |||
| JP2009503470A | 2009-01-29 | |||
| US5221928A | 1993-06-22 | |||
| JP2016090268A | 2016-05-23 |
Other References:
WHYTE, R. Z. ET AL.: "Multiple range imaging camera operation with minimal performance impact", PROCEEDINGS OF SPIE, vol. 7538, 29 January 2010 (2010-01-29), XP055555160, Retrieved from the Internet
R.Z.WHYTEA.D.PAYNEA.A.DORRINGTONM.J.CREE: "Proc.SPIE-IS&T Electronic Imaging", vol. 7538, 2010, article "Multiple range imaging camera operation with minimal performance impact", pages: 75380I
See also references of EP 3591437A4
R.Z.WHYTEA.D.PAYNEA.A.DORRINGTONM.J.CREE: "Proc.SPIE-IS&T Electronic Imaging", vol. 7538, 2010, article "Multiple range imaging camera operation with minimal performance impact", pages: 75380I
See also references of EP 3591437A4
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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