Image Capture Device with Rolling Band Shutter
First Claim
1. A digital image sensor comprising:
- a. a plurality of photosites disposed along the digital image sensor; and
b. a data capture module configured to initiate multiple scanning sweeps of the plurality of photosites to obtain sets of digital values corresponding to incident light upon the plurality of photosites, wherein the multiple scanning sweeps are at least partially concurrent, wherein the sets of digital values each comprise a partial image.
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Accused Products
Abstract
A device and method for compensating for motion in image capture are provided. A processor (205) initiates partially concurrent scanning sweeps (208,209) across a digital image sensor (203) to obtain sets of digital values (210,211). At least a first set of digital values (210) and a second set of digital values (211) are stored in memory (206). An image construction module (213) compares ones of the first set of digital values (210) with ones of the second set of digital values (211) to estimate an amount of motion. The estimation may be accomplished by determining a moment between the first set of digital values (210) and the second set of digital values (211). Upon compensating for any motion, resulting digital values (412) are written to memory (206) as a compensated image. To improve an overall signal to noise ratio, noise reduction filters may also be applied to the first set of digital values (210), the second set of digital values (211), or combinations thereof.
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Citations
20 Claims
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1. A digital image sensor comprising:
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a. a plurality of photosites disposed along the digital image sensor; and b. a data capture module configured to initiate multiple scanning sweeps of the plurality of photosites to obtain sets of digital values corresponding to incident light upon the plurality of photosites, wherein the multiple scanning sweeps are at least partially concurrent, wherein the sets of digital values each comprise a partial image. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for motion compensation in a digital image capture apparatus comprising an image sensor having groups of photosites, the method comprising the steps of:
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a. initiating a first scanning sweep of the groups of photosites, the scanning sweep comprising a digitization of incident light upon the groups of photosites; b. storing a first set of digital values obtained from the first scanning sweep; c. prior to completion of the first scanning sweep, initiating a second scanning sweep of the groups of photosites; d. storing a second set of digital values obtained from the second scanning sweep; e. compensating for changes between the first set of digital values and the second set of digital values; and f. constructing an image. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A portable electronic device comprising:
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a. an image capture apparatus comprising; i. a digital image sensor comprising a plurality of photosites; and ii. a data capture module coupled to the digital image sensor, the data capture module being configured to initiate a first scanning sweep of the plurality of photosites to obtain a first set of digital values, the data capture module being further configured to, prior to completion of the first scanning sweep, initiate a second scanning sweep to obtain a second set of digital values; b. a processor coupled to the image capture apparatus; and c. a display module; wherein the processor is configured to compensate for motion of the portable electronic device by comparing ones of the first set of digital values to ones of the second set of digital values. - View Dependent Claims (17, 18, 19, 20)
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Specification