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.

Date of Patent:
Jul. 12, 2022

Filed:

Nov. 14, 2019
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Makoto Kobayashi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/40 (2022.01);
U.S. Cl.
CPC ...
H04L 63/068 (2013.01); H04L 63/0807 (2013.01); H04L 63/205 (2013.01);
Abstract

An information processing apparatus, which is communicably connected to an authorization server and a resource server, includes an expiration time generated based on a time of the information processing apparatus in a request for a token for usage of a service provided by the resource server, and sends the request to the authorization server. When time information of the authorization server is received as a response to the request, the information processing apparatus includes an expiration time generated based on the time information of the authorization server in the request for the token, and resends the requests. The information processing apparatus then requests the resource server for time information of the resource server using the token obtained as a response to the resent request, and corrects the time of the information processing apparatus based on the time information of the resource server.


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