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:
Sep. 26, 1995
Filed:
Feb. 09, 1994
Hiroyoshi Misumi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
According to one aspect of this invention, auxiliary data recorded on a recording medium together with image and/or sound data is reproduced by a plurality of times, and if the auxiliary data reproduced from a predetermined range on the recording medium coincide with each other, it is determined that the auxiliary data reproduced from the predetermined range is true auxiliary data which can be utilized. According to another aspect of the invention, auxiliary data recorded in different areas on a recording medium are repeatedly reproduced, and if the auxiliary data repeatedly reproduced from all areas do not coincide with each other by predetermined times, it is determined whether the auxiliary data repeatedly reproduced from a particular range coincide with each other by predetermined times. If such auxiliary data coincide, it is determined that the auxiliary data reproduced from the particular range is true auxiliary data which can be utilized.