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US 2023/0261879 A1Published application
Method of hashing a video stream
AssigneeSTMicroelectronics (Grenoble 2) SAS
InventorJérôme Pierre René Chossat
Life of this patent
Estimating the term…
Abstract
In accordance with an embodiment, a video flow transmission method includes: the generating, by an image sensor, a video flow comprising first and second images; hashing, by the image sensor, a portion of the first image based on a first hashing configuration to generate a first hash value, the first hashing configuration defining first positions of pixels to be hashed; hashing, by the image sensor, a portion of the second image based on a second hashing configuration to generate a second hash value, the second hashing configuration being different from the first configuration and defining second positions of pixels to be hashed; and transmitting, by the image sensor, the first and second images, and the first and second hash values, to a second device.
Claims20
A video flow transmission method, comprising:
- generating, by an image sensor, a video flow comprising first image and a second image, each of the first and second images comprising an arrangement of pixels at corresponding pixel positions, each pixel of the arrangement of pixels associated with one or a plurality of pixel data;
- hashing, by the image sensor, a portion of the first image based on a first hashing configuration to generate a first hash value based only on the portion of the first image, the first hashing configuration defining first pixel positions of pixels to be hashed;
- hashing, by the image sensor, a portion of the second image based on a second hashing configuration different from the first hashing configuration to generate a second hash value based only on the portion of the second image, the second hashing configuration defining second pixel positions of pixels to be hashed;
- and
- transmitting, by the image sensor, the first image, the second image, the first hash value and the second hash value to a second device.
2 more elements
A method of verifying an integrity of a video flow, comprising:
- receiving, by a processing device, the video flow comprising a first image and a second image, each of the first and second images comprising an arrangement of pixels at corresponding pixel positions, each pixel of the arrangement of pixels being associated with one or a plurality of pixel data;
- receiving, by the processing device, a first hash value associated with the first image and a second hash value associated with the second image;
- hashing, by the processing device, a portion of the first image based on a first hashing configuration to generate another first hash value based only on the portion of the first image, the first hashing configuration defining first positions of pixels to be hashed;
- hashing, by the processing device, a portion of the second image based on a second hashing configuration to generate another second hash value based only on the portion of the second image, the second hashing configuration being different from the first hashing configuration and defining second positions of the pixels to be hashed;
- and
- verifying, by the processing device, an integrity of the video flow based on a first comparison of the first hash value with the other first hash value and on a second comparison of the second hash value with the other second hash value.
3 more elements
An image sensor comprising:
- pixel array configured to capture images;
- a first processing device configured to:
- receive images captured by the pixel array,
- generate a video flow comprising at least one first image and at least one second image, and
- transmit the video flow to a second device, wherein the at least one first image and the at least one second image being comprises an arrangement of pixels at corresponding pixel positions, each pixel of the arrangement of pixels being associated with one or a plurality of pixel data;
- and
- a hashing circuit, configured to:
- hash a portion of the first image based on a first hashing configuration,
- generate a first hash value based only on the portion of the first image,
- transmit the first hash value to the second device, the first hashing configuration defining first positions of pixels to be hashed,
- hash a portion of the second image based on a second hashing configuration,
- generate a second hash value based only on the portion of the second image, and
- transmit the second hash value to the second device, the second hashing configuration being different from the first hashing configuration and defining second positions of pixels to be hashed.
10 more elements
A system comprising:
- a first processing device configured to:
- receive a video flow comprising a first image and a second image, each image of the first image and the second image being an arrangement of pixels at corresponding pixel positions, each pixel of the corresponding pixel positions being associated with one or plurality of pixel data;
- receive a first hash value associated with the first image and a second hash value associated with the second image;
- hash a portion of the first image based on a first hashing configuration to generate another first hash value based only on the portion of the first image, the first hashing configuration defining first positions of pixels to be hashed;
- hash a portion of the second image based on a second hashing configuration to generate another second hash value based only on the portion of the second image, the second configuration being different from the first hashing configuration and defining second positions of pixels to be hashed;
- and
- verify an integrity of the video flow based on a first comparison of the first hash value with the other first hash value and on a second comparison of the second hash value with the other second hash value.
4 more elements
Dependencies are inferred from the claim text.