Inventor
KUROSU YUTAKA
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KUROSU YUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS6658135B1Dec 2, 2003
Recording device
HITACHI LTD111 citations97
US6563935B1May 13, 2003
Method of extracting digital watermark information and method of judging bit value of digital watermark information
HITACHI LTD81 citations97
US6418232B1Jul 9, 2002
Method of authenticating digital-watermark pictures
HITACHI LTD142 citations97
US6665417B1Dec 16, 2003
Method of judging digital watermark information
HITACHI LTD25 citations92
US6456727B1Sep 24, 2002
Method of extracting digital watermark information and method of judging but value of digital watermark information
HITACHI LTD25 citations92
US6707927B1Mar 16, 2004
Steganographic system, method, program and storage medium therefor
HITACHI LTD31 citations89
US6970575B2Nov 29, 2005
Method of extracting digital watermark information and method of judging bit value of digital watermark information
HITACHI LTD5 citations73
US6650763B2Nov 18, 2003
Method of extracting digital watermark information and method of judging bit value of digital watermark information
HITACHI LTD12 citations73
US6959101B2Oct 25, 2005
Method of judging digital watermark information
HITACHI LTD3 citations62