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US 12,395,758 B2Granted
Image processing device configured to regenerate timestamp and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsKeun Joo Park, Junseok Kim, Yohan Roh, Hyunsurk Ryu, Jooyeon Woo, Hyunku Lee
Life of this patent
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Abstract
An image processing device includes a vision sensor and a processor. The vision sensor generates a plurality of events in which an intensity of light changes and generates a plurality of timestamps depending on times when the events occur. In addition, the processor may regenerate a timestamp of a pixel where an abnormal event occurs, based on temporal correlation of the events.
Claims20
A dynamic vision sensor comprising:
- a plurality of pixels divided into a plurality of groups, wherein each of the plurality of groups includes at least two pixels;
- a first address event generator configured to generate a first address of a first pixel where an event occurs and transmit a reset signal to the first pixel in response to the event occurring;
- a second address event generator configured to generate a second address of the first pixel and transmit an acknowledgement signal to the first pixel in response to the event occurring;
- and
- a packetizer configured to generate a packet, the packet including a timestamp of the first pixel, the first address of the first pixel and the second address of the first pixel,
- wherein the plurality of groups include a plurality of photodiodes,
- wherein the plurality of photodiodes are disposed in a first semiconductor chip,
- wherein the first address event generator and the second address event generator are disposed on a second semiconductor chip, and
- wherein the first semiconductor chip is stacked on the second semiconductor chip.
6 more elements
A dynamic vision sensor comprising:
- a plurality of pixels divided into a plurality of groups including a first group, wherein each group of the plurality of groups includes eight pixels;
- a first address event generator configured to generate a first address of a first pixel in the first group where an event occurs and transmit a reset signal to the first pixel in response to the event occurring;
- a second address event generator configured to generate a second address of the first pixel and transmit an acknowledgement signal to the first pixel in response to the event occurring;
- and
- a packetizer configured to generate a packet, the packet including a timestamp of the first pixel, the first address of the first pixel and the second address of the first pixel,
- wherein the eight pixels are sequentially arranged in a first direction,
- wherein the first group includes eight photodiodes,
- wherein the eight photodiodes are disposed in a first semiconductor chip,
- wherein the first address event generator and the second address event generator are disposed on a second semiconductor chip, and
- wherein the first semiconductor chip is stacked on the second semiconductor chip.
7 more elements
A dynamic vision sensor comprising:
- a plurality of pixels divided into a plurality of groups, wherein each group of the plurality of groups includes N number of pixels sequentially arranged in a first direction;
- an amplifier configured to amplify a voltage level corresponding to charges stored in a photodiode of a first pixel where an event occurs;
- a comparator configured to determine a type of an event based on an output of the amplifier and output an on-event or an off-event;
- a first address event generator configured to generate a first address of the first pixel and transmit a reset signal to the first pixel in response to the event occurring;
- a second address event generator configured to generate a second address of the first pixel and transmit an acknowledgement signal to the first pixel in response to the event occurring;
- and
- a packetizer configured to generate a packet, the packet including a timestamp of the first pixel, the on-event or the off-event, the first address of the first pixel and the and the second address of the first pixel,
- wherein the plurality of groups include a plurality of photodiodes,
- wherein the plurality of photodiodes are disposed in a first semiconductor chip,
- wherein the first address event generator and the second address event generator are disposed on a second semiconductor chip,
- wherein the second semiconductor chip is stacked on the second semiconductor chip, and
- wherein N is an integer greater than two.
9 more elements
Dependencies are inferred from the claim text.