Invention Grant
- Patent Title: Calibration circuitry and method for a time of flight imaging system
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Application No.: US14473803Application Date: 2014-08-29
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Publication No.: US09720076B2Publication Date: 2017-08-01
- Inventor: Jian Guo , Rui Wang , Tiejun Dai
- Applicant: OMNIVISION TECHNOLOGIES, INC.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: G01S7/497
- IPC: G01S7/497 ; G01S17/89 ; G01S7/483 ; G06F3/01

Abstract:
A time of flight imaging system includes a light source coupled to emit light pulses to an object in response a light source modulation signal generated in response to a reference modulation signal. Each pixel cell of a time of flight pixel cell array is coupled to sense light pulses reflected from the object in response a pixel modulation signal. A programmable pixel delay line circuit is coupled to generate the pixel modulation signal with a variable pixel delay programmed in response to a pixel programming signal. A control circuit is coupled to receive pixel information from the time of flight pixel array representative of the sensed reflected light pulses. The control circuit is coupled to vary the pixel programming signal during a calibration mode to synchronize the light pulses emitted from the light source with the pulses of the pixel modulation signal.
Public/Granted literature
- US20160061941A1 CALIBRATION CIRCUITRY AND METHOD FOR A TIME OF FLIGHT IMAGING SYSTEM Public/Granted day:2016-03-03
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