Invention Grant
US09052382B2 System architecture design for time-of-flight system having reduced differential pixel size, and time-of-flight systems so designed
有权
具有降低差分像素尺寸的飞行时间系统的系统架构设计,以及如此设计的飞行时间系统
- Patent Title: System architecture design for time-of-flight system having reduced differential pixel size, and time-of-flight systems so designed
- Patent Title (中): 具有降低差分像素尺寸的飞行时间系统的系统架构设计,以及如此设计的飞行时间系统
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Application No.: US14056948Application Date: 2013-10-18
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Publication No.: US09052382B2Publication Date: 2015-06-09
- Inventor: Cyrus Bamji , Swati Mehta
- Applicant: Microsoft Corporation
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agent Gregg Wisdom; Judy Yee; Micky Minhas
- Main IPC: G01S7/491
- IPC: G01S7/491 ; G01S17/36 ; G01S17/89 ; G01C3/08

Abstract:
Embodiments of the present invention provide methods to produce a high performance, feature rich TOF system, phase-based or otherwise using small TOF pixels, single-ended or preferably differential, as well as TOF systems so designed. IC chip area required for pixels is reduced by intelligently off-loading or removing from within the pixel certain components and/or functionality. In some embodiments during a single TOF system capture period, analog values from each pixel are repeatedly sampled and converted to digital values, which are combined and manipulated on the sensor chip. Combining this plurality of values enables appropriately compact data from the sensor chip. Embodiments of the present invention implement a TOF system with high ambient light resilience, high dynamic range, low motion blur and dealiasing support, while advantageously reducing pixel area size relative to prior art TOF pixels.
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