Electronic Device with Modulated Light Flash Operation for Rolling Shutter Image Sensor
First Claim
1. An electronic device comprising:
- a modulated light projector;
an electronic rolling shutter (ERS) imaging camera having a sensor array with a set of pixel rows;
a controller to control the modulated light projector to project a modulated light flash during capture of a first image frame by the sensor array, wherein the controller is to initiate the modulated light flash while each pixel row of the set is exposed for gathering light and to terminate the modulated light flash before a pixel row of the set is exposed for capture of a next image frame by the sensor array; and
a processor to determine modulated light image data based on the first image frame.
2 Assignments
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Accused Products
Abstract
An electronic device (100) includes a modulated light projector (119) and an electronic rolling shutter (ERS) imaging camera (1302) having a sensor array (1306) with a set of pixel rows. The electronic device includes a controller (1304) to control the modulated light projector (119) to project a modulated light flash (1608, 1810, 2010) during capture of a first image frame (1606, 1806, 2006) by the sensor array. The controller is to initiate the modulated light flash while each pixel row of the set is exposed for gathering light and to terminate the modulated light flash before a pixel row of the set is exposed for capture of a next image frame by the sensor array. The electronic device further includes a processor (802) to determine modulated light image data (1320) based on the first image frame. The controller also may control the modulated light projector to refrain from projecting the modulated light flash during capture of a second image frame (1602, 1612, 1802, 1816, 2002, 2018), adjacent to the first image frame.
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Citations
20 Claims
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1. An electronic device comprising:
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a modulated light projector; an electronic rolling shutter (ERS) imaging camera having a sensor array with a set of pixel rows; a controller to control the modulated light projector to project a modulated light flash during capture of a first image frame by the sensor array, wherein the controller is to initiate the modulated light flash while each pixel row of the set is exposed for gathering light and to terminate the modulated light flash before a pixel row of the set is exposed for capture of a next image frame by the sensor array; and a processor to determine modulated light image data based on the first image frame. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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capturing a first image frame at an electronic rolling shutter (ERS) imaging camera; initiating a projection of a modulated light flash while each pixel row of a set of pixel rows of a sensor array of the ERS imaging camera is exposed for gathering light for the first image frame; terminating the modulated light flash before a pixel row of the set is exposed for capture of a next image frame by the ERS imaging camera; and determining modulated light image data based on the first image frame. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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capturing, at an electronic rolling shutter (ERS) imaging camera, a set of image frames at a first frame rate; capturing, at the ERS imaging camera, a first image frame and a second image frame at a second frame rate, the second frame rate greater than the first frame rate; projecting a modulated light flash during the capture of the first image frame, a duration of the modulated light flash occurring while each pixel row of the ERS imaging camera is exposed for gathering light for the first image frame; refraining from projection of a modulated light flash during the capture of the second image frame; and determining modulated light image data based on a comparison of the first image frame and the second image frame. - View Dependent Claims (17, 18, 19, 20)
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Specification