Inventor · disambiguated record
Takashi Katsura
Also filed as: KATSURA TAKASHI
14 granted patents·334 citations·filing 1984–2004
93Inventor score
Top patents by PatentIndex Score
14 records- 0190US6693965B1Apparatus for and method of embedding and extracting digital information, and medium having program for carrying out the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 17, 2004·50 cites·6 claims
- 0287US7356700B2Digital watermark-embedding apparatus and method, digital watermark-detecting apparatus and method, and recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Apr 8, 2008·51 cites·20 claims
- 0387US6898297B2Digital watermark embedding method, digital watermark extracting method, recording medium, image recording device, and image replaying deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted May 24, 2005·36 cites·18 claims
- 0486US6477276B1Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Nov 5, 2002·101 cites·18 claims
- 0577US6639997B1Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 28, 2003·16 cites·48 claims
- 0671US6728409B2Apparatus for and method of embedding and extracting digital information and medium having program for carrying out the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 27, 2004·9 cites·6 claims
- 0770US7315621B2Digital watermark-embedding apparatus, digital watermark-embedding method, and recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jan 1, 2008·16 cites·20 claims
- 0870US6788821B2Digital information embedding/extracting apparatus and method, and medium including a program for executing the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Sep 7, 2004·10 cites·33 claims
- 0969US7142692B2Reproduction equipment, reproduction equipment specifying equipment, reproduction equipment specifying system and methods and recording media for said equipment and systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Nov 28, 2006·9 cites·16 claims
- 1068US7003666B1Apparatus and method for embedding information for tamper detection and detecting tamper and recording medium having program for carrying out the method recorded thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 21, 2006·15 cites·9 claims
- 1165US7127614B2Justification authenticating system, personal certificate issuing system, and personal certificateMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Oct 24, 2006·16 cites·12 claims
- 1246US7187782B2Digital watermark-embedding apparatus, digital watermark-embedding method, and recording medium having recoded therein a program for performing the digital watermark-embedding methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Mar 6, 2007·2 cites·10 claims
- 1344US7680296B2Information embedding device and program for changing a number of points that exist on sides of a polygonPANASONIC CORP·Filed 2004·Granted Mar 16, 2010·1 cites·22 claims
- 1435US4600862ADischarge lamp operation apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1984·Granted Jul 15, 1986·2 cites·2 claims
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