The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Jul. 15, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Hisashi Enomoto, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The authentication device holds first data and second data, the first data to authenticate the authentication target device of a version from a first version same as the authentication device to a second version newer than the first version, the second data to authenticate the authentication target device of a version newer than the second version. The authentication target device holds a plurality pieces of first target data and second target data, the plurality pieces of first target data corresponding to each of versions from a third version same as the authentication target device to a fourth version older than the third version, one second target data corresponding to each of versions from a fifth version to a sixth version, the fifth version being older than the fourth version by one version, the sixth version being older than the fifth version.