2002-165191 is referenced by 38 patents.

PROBLEM TO BE SOLVED: To provide a technology capable of specifying a reproducing apparatus used for a copying.SOLUTION: The reproducing apparatus, when reproducing, converts for identifying codes of the apparatus into a plurality of signal series by using a corresponding table and embeds a plurality of acquired signal series into AV signals as an electronic transparency. In a specifying apparatus of reproducing apparatus, however, the relational values of the AV signals and every signal series included in the table are acquired to be compared with a prescribed threshold so that the embedded signal series are decided and the identifying codes are extracted.

Title
Reproducing apparatus, specifying apparatus of the same, specifying system of the apparatus, these methods and recording medium thereof
Application Number
2001-223972
Publication Number
2002-165191
Application Date
July 25, 2001
Publication Date
June 7, 2002
Inventor
Nakamura Kazuhiko
Sumino Shinya
Katsura Takuji
Noritomi Kenichi
Arimura Koji
Inoue Takashi
Assignee
Matsushita Electric
IPC
H04N 07/081
H04N 01/387
G11B 20/10
G10L 11/00
G06T 01/00
H04N 07/08