Title:
DISTANCE MEASUREMENT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/228933
Kind Code:
A1
Abstract:
[Problem] A conventional distance measurement apparatus requires, regardless of a direct TOF system or an indirect TOF system, an increased number of times of integration operation for improving an S/N ratio, and has a problem that a reading time multiplied by the number of times of A/D conversion is necessary, which leads to a frame rate decrease. [Solution] In this distance measurement apparatus, a pixel circuit internally includes a signal selection unit that selectively outputs a light reception signal by a light receiving element and a false signal which is an output of a test control unit, integration is performed in an analog integration unit in the pixel circuit, a different number of times of superimposition of the false signal is used for every subframe, A/D conversion of (N-P) bits with a fixed threshold is executed, digital signals are integrated in a digital integration unit, and distance measurement is performed.
Inventors:
IRIGUCHI MASAO (JP)
Application Number:
PCT/JP2023/019083
Publication Date:
November 30, 2023
Filing Date:
May 23, 2023
Export Citation:
Assignee:
ROSNES CORP (JP)
International Classes:
G01S7/4865; G01S17/894
Domestic Patent References:
| WO2020196378A1 | 2020-10-01 | |||
| WO2021145134A1 | 2021-07-22 | |||
| WO2022097522A1 | 2022-05-12 |
Foreign References:
| JP2020098193A | 2020-06-25 |
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