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US 7,453,514 B2Granted
Digital photography device having a rolling shutter
AssigneePure Digital Technologies, Inc.
InventorsJohn Louis Warpakowski Furlan, Ariel Braunstein
Life of this patent
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Abstract
Various methods, apparatuses, and systems in which a digital photography device includes a rolling shutter, a sensor, and a flash are described. The sensor implements a rolling shutter timing mechanism. The shutter includes a material that has an alterable translucent state. The shutter is in the optical path of light going to the sensor. The flash generates a pulsed illumination. The alterable translucent state of the shutter controls the sensor's exposure to the photographic effects of ambient light during a picture using the pulsed illumination.
Claims21
A digital photography device, comprising:
- a sensor implementing a rolling shutter timing mechanism;
- a shutter including a material having an alterable translucent state, wherein the shutter has a gradual transition curve from a first translucent state to a second translucent state and the shutter is in the optical path of light going to the sensor;
- a flash to generate a pulsed illumination, the alterable translucent state of the shutter to control the sensor's exposure to the photographic effects of ambient light during a picture using the pulsed illumination;
- and
- logic to detect a pressing of an actuator that triggers the flash, wherein the logic to synch up a changing amount of light being allowed to pass through the shutter having the alterable translucent states during the gradual transitioning of the shutter from the first translucent state to the second translucent state with an operation of the rolling shutter and a time period when the pulsed illumination occurs.
2 more elements
A digital photography device, comprising:
- a shutter including a material having an alterable translucent state and a gradual transition from a first translucent state to a second translucent state;
- a lens;
- a complementary metal-oxide semiconductor (CMOS) sensor implementing a rolling shutter timing mechanism, wherein the shutter is in an optical path of light going to the sensor;
- a pulsed illumination device to provide a pulsed illumination;
- and
- logic to transition a shutter, at approximately an occurrence of the pulsed illumination when the picture is being taken, to the second translucent state passing at least 30 percent but less than 75 percent of the incoming light to the CMOS sensor from the first translucent state passing less than 10 percent of incoming light to the CMOS sensor at approximately a beginning of an integration time.
3 more elements
A method for a digital photography device, comprising:
- tracking an amount of light being exposed to a sensor implementing a pixel line by pixel line integration timing mechanism when a picture is being taken, wherein the sensor is a complementary metal-oxide semiconductor (CMOS) sensor implementing a rolling timing mechanism;
- and
- transitioning a shutter at approximately an occurrence of a pulsed illumination when the picture is being taken to a second translucent state passing at least 30 percent but less than 75 percent of the incoming light to the sensor from a first translucent state passing less than 10 percent of incoming light to the CMOS sensor at approximately a beginning of an integration time, wherein the shutter includes a material having an alterable translucent state and a gradual transition from the first translucent state to the second translucent state.
An apparatus, comprising:
- means for tracking an amount of light being exposed to a sensor implementing a pixel line by pixel line integration timing mechanism when a picture is being taken, wherein the sensor is a complementary metal-oxide semiconductor (CMOS) sensor implementing a rolling timing mechanism;
- a means for a pulsed illumination;
- and
- means for transitioning a rolling shutter from a first translucent state passing less than 10 percent of incoming light to the CMOS sensor at approximately a beginning of an integration time to be in a second translucent state passing at least 30 percent but less than 75 percent of the incoming light to the sensor at approximately an occurrence of the pulsed illumination when the picture is being taken, wherein the shutter includes a material having an alterable translucent state and a gradual transition from the first translucent state to the second translucent state.
1 more element
Dependencies are inferred from the claim text.