Image sensor, image pickup apparatus, image sensor-identifying method, image forgery-preventing method, and image alternation-limiting method
AssigneeSony Corporation
InventorsSeichi Otsuki, Shigeyuki Baba, Shigeki Nakamura
Life of this patent
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Abstract
To provide an image sensor capable of guaranteeing consistency between acquired image information and picked-up image information. An image sensor 30 includes an image information processing unit 4 that forms integrated information in which image sensor identification information capable of identifying the image sensor 30 and image information obtained by an analog/digital conversion unit 25 are associated with each other, and an image information output unit 24 that outputs the integrated information to an external unit.
Claims14
An image sensor, comprising:
- an image information processing unit configured to generate integrated information in which image sensor identification information for identification of the image sensor and first image information obtained by an analog/digital conversion unit are associated with each other, wherein
- the integrated information is electronic signature information obtained by encryption of at least one of the image sensor identification information or the first image information, and
- the electronic signature information is encrypted based on a public-key method;
- and
- an image information output unit configured to output the integrated information to an external unit.
An image pickup apparatus, at least comprising:
- an image sensor that comprises:
- an image information processing unit configured to generate integrated information in which image sensor identification information for identification of the image sensor and image information obtained by an analog/digital conversion unit are associated with each other, wherein
- the integrated information is electronic signature information obtained by encryption of at least one of the image sensor identification information or the image information, and
- the electronic signature information is encrypted based on a public-key method;
- and
- an image information output unit configured to output the integrated information to an external unit.
An image sensor-identifying method, comprising:
- identifying an image sensor based on analysis of integrated information in which image sensor identification information for identification of the image sensor and image information obtained by an analog/digital conversion unit are associated with each other, wherein
- the integrated information is electronic signature information obtained by encryption of at least one of the image sensor identification information or the image information, and
- the electronic signature information is encrypted based on a public-key method;
- and
- outputting the integrated information from the image sensor to an external unit.
An image forgery-preventing method, comprising:
- preventing forgery of image information based on electronic signature information in which image sensor identification information for identification of an image sensor and image information obtained by an analog/digital conversion unit are associated with each other, wherein
- the electronic signature information is obtained by encryption of at least one of the image sensor identification information or the image information, and
- the electronic signature information is encrypted based on a public-key method;
- and
- outputting the electronic signature information from the image sensor to an external unit.
An image alternation-limiting method, comprising:
- performing decryption processing on image information for an image alteration privilege to decrypted image information, wherein
- the image information includes electronic signature information in which image sensor identification information for identification of an image sensor and the image information obtained by an analog/digital conversion unit are associated with each other,
- the electronic signature information obtained by encryption of at least one of the image sensor identification information or the image information, and
- the electronic signature information is encrypted based on a public-key method;
- and
- outputting the image information from the image sensor to an external unit.
Dependencies are inferred from the claim text.