Inventor
SUGAYA KAZUMI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “SUGAYA KAZUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER ELECTRONIC CORP
5 patentsUS6389152B2May 14, 2002
Method and apparatus for superposing a digital watermark and method and apparatus for detecting a digital watermark
PIONEER ELECTRONIC CORP67 citations96
US6246775B1Jun 12, 2001
Method and appartus for superposing a digital watermark and method and apparatus for detecting a digital watermark
PIONEER ELECTRONIC CORP157 citations96
US6449015B1Sep 10, 2002
Redundant picture detecting device, and picture converting apparatus employing the same
PIONEER ELECTRONIC CORP21 citations92
US6111990AAug 29, 2000
Digital-watermark superposing apparatus and digital-watermarker detecting apparatus
PIONEER ELECTRONIC CORP36 citations92
US6804452B1Oct 12, 2004
Apparatus for generating recording signal including image data and copy condition information
PIONEER ELECTRONIC CORP11 citations73
PIONEER CORP
3 patentsPIONEER ELECTRIC CORP
2 patentsUS6707774B1Mar 16, 2004
Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function
PIONEER ELECTRIC CORP111 citations98
US6633723B1Oct 14, 2003
Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function
PIONEER ELECTRIC CORP50 citations92
HITACHI LTD
2 patentsUS6711276B1Mar 23, 2004
Control method and apparatus for embedding information in data
HITACHI LTD57 citations96
US6954856B1Oct 11, 2005
Additional information embedding method, additional information detecting method, additional information embedding apparatus and additional information detecting apparatus
HITACHI LTD28 citations92