Invention Grant
- Patent Title: Timing of multiplexed sensor phase measurements in a depth camera assembly for depth determination using fringe interferometry
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Application No.: US16298278Application Date: 2019-03-11
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Publication No.: US11716548B2Publication Date: 2023-08-01
- Inventor: Michael Hall , Qing Chao
- Applicant: Meta Platforms Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Meta Platforms Technologies, LLC
- Current Assignee: Meta Platforms Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Fenwick & West LLP
- Main IPC: H04N25/53
- IPC: H04N25/53 ; G01S17/89 ; G02B27/01 ; G01S7/4861 ; H04N25/771 ; H04N13/207

Abstract:
A depth camera assembly (DCA) determines distances between the DCA and objects in a local area within a field of view of the DCA. The DCA projects a series of sinusoidal patterns into the local area DCA and captures images of the sinusoidal patterns via a sensor. Each pixel of the augmented sensor includes a plurality of charge bins, and charge accumulated by a photodiode of a pixel during different time intervals (e.g., times when different sinusoidal patterns are emitted) is stored in a different charge storage bin. Charge may be retrieved from different charge storage bins to determine depth from the DCA.
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