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:
Nov. 13, 2012
Filed:
Nov. 30, 2011
Osamu Kawamae, Yokohama, JP;
Toshifumi Takeuchi, Tokyo, JP;
Hiroyuki Kimura, Hiratsuka, JP;
Takao Arai, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Osamu Kawamae, Yokohama, JP;
Toshifumi Takeuchi, Tokyo, JP;
Hiroyuki Kimura, Hiratsuka, JP;
Takao Arai, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording medium.