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:
Apr. 28, 2009
Filed:
May. 15, 2002
Junko Fukuda, Kanagawa, JP;
Keigo Ihara, Tokyo, JP;
Takahiko Sueyoshi, Tokyo, JP;
Yuji Ayatsuka, Tokyo, JP;
Nobuyuki Matsushita, Kanagawa, JP;
Junichi Rekimoto, Tokyo, JP;
Junko Fukuda, Kanagawa, JP;
Keigo Ihara, Tokyo, JP;
Takahiko Sueyoshi, Tokyo, JP;
Yuji Ayatsuka, Tokyo, JP;
Nobuyuki Matsushita, Kanagawa, JP;
Junichi Rekimoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An authentication system for authenticating a mobile information terminal is disclosed. The system includes elements for: issuing a user ID to the terminal upon program issuing receipt therefrom; generating a random number based on the user ID and a time of issuing request receipt; registering the random number and the time of receipt in conjunction with the user ID; generating a first program for creating a first image embedded with the user ID, in accordance with the random number, user ID and time of receipt; transmitting the first program to the terminal; picking up the first image displayed on the terminal; recognizing first information from the picked-up first image while extracting the user ID from the same image concurrently; retrieving the registered random number and time of receipt in keeping with the user ID; generating a second program for creating a second image based on the retrieved random number, time of receipt, and user ID; and authenticating the terminal by verifying a match between second information from the second image generated by execution of the second program on the one hand, and the recognized first information on the other hand.