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US 12,756,953 B2Granted
Photosensitive chip, image processing method, and electronic device
AssigneeLenovo (Beijing) Limited
InventorsJiefeng Chen, Wenhua Long
Life of this patent
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Abstract
A photosensitive chip includes a photosensitive array and a target transmission channel. The photosensitive array is configured to generate an induced electrical signal. A target image signal is generated from the induced electrical signal through the target transmission channel. The target image signal is used to generate a target image. Target image represents a change in a target space.
Claims16
A photosensitive chip comprising:
- a photosensitive array configured to generate an induced electrical signal;
- and
- a target transmission channel, a target image signal being generated from the induced electrical signal through the target transmission channel, the target image signal being used to generate a target image, and the target image representing a change in a target space;
- wherein the target transmission channel includes:
- a subtractor configured to perform subtraction on an induced electrical signal at an N-th moment and an induced electrical signal at an (N−1)-th moment to generate a target electrical signal, N being an integer greater than or equal to 1;
- and
- an analog-to-digital conversion circuit connected to the subtractor and configured to convert the target electrical signal into the target image signal.
4 more elements
An image processing method comprising:
- obtaining a target image, the target image being generated from a target image signal provided by a photosensitive chip of an image collection apparatus, and the target image representing a change in a target space collected by the image collection apparatus;
- and
- processing the target image to obtain a change amount in the target space;
- wherein the photosensitive chip includes:
- a photosensitive array configured to generate an induced electrical signal;
- and
- a target transmission channel, the target image signal being generated from the induced electrical signal through the target transmission channel, and the target transmission channel including:
- a subtractor configured to perform subtraction on an induced electrical signal at an N-th moment and an induced electrical signal at an (N−1)-th moment to generate a target electrical signal, N being an integer greater than or equal to 1;
- and
- an analog-to-digital conversion circuit connected to the subtractor and configured to convert the target electrical signal into the target image signal.
7 more elements
An electronic device, comprising:
- an image collection apparatus including a photosensitive chip including:
- a photosensitive array configured to generate an induced electrical signal;
- and
- a target transmission channel, a target image signal being generated from the induced electrical signal through the target transmission channel, the target image signal being used to generate a target image, and the target transmission channel including:
- a subtractor configured to perform subtraction on an induced electrical signal at an N-th moment and an induced electrical signal at an (N−1)-th moment to generate a target electrical signal, N being an integer greater than or equal to 1;
- and
- an analog-to-digital conversion circuit connected to the subtractor and configured to convert the target electrical signal into the target image signal;
- and
- a processor configured to instruct the image collection apparatus with target instructions to cause the image collection apparatus to provide the target image, the target image representing a change in a target space collected by the image collection apparatus.
6 more elements
Dependencies are inferred from the claim text.