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:
Mar. 23, 1999
Filed:
Nov. 18, 1997
Keisuke Aoyama, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A line of sight detection device for detecting a line of sight of a user by using personal data of the user includes a personal data obtaining device for obtaining personal data related to the line of sight of the user, an attitude detection device for detecting an attitude of the device, a memory for storing the attitude of the device detected by the attitude detection device, the memory storing the attitude of the line of sight detection device at a time when the personal data obtaining device starts an obtaining operation of the personal data, and a determination device for comparing the attitude of the line of sight detection device stored in the memory with the attitude of the device during the obtaining operation for the personal data by the personal data obtaining device, and for outputting information indicative of a failure of the obtaining operation of the personal data when the compared attitudes of the device are different from each other.