Inventor
ISHIGURO RYUJI
JP80 patents
⚠️ This page may combine multiple inventors who share the name “ISHIGURO RYUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
47 patentsUS6360320B2Mar 19, 2002
Information processing apparatus, information processing method, information processing system and recording medium using an apparatus id and provided license key for authentication of each information to be processed
SONY CORP154 citations99
US5883958AMar 16, 1999
Method and device for data decryption, a method and device for device identification, a recording medium, a method of disk production, and a method and apparatus for disk recording
SONY CORP156 citations99
US7224804B2May 29, 2007
Information processing device, information processing method, and program storage medium
SONY CORP59 citations98
US7225339B2May 29, 2007
Information recording/playback apparatus and method
SONY CORP70 citations98
US5796839AAug 18, 1998
Encryption method, encryption apparatus, recording method, decoding method, decoding apparatus and recording medium
SONY CORP95 citations98
US7337320B2Feb 26, 2008
Streaming system for distributing encrypted data, and streaming method therefor
SONY CORP77 citations97
US7237112B1Jun 26, 2007
Information processing system
SONY CORP67 citations97
US5917910AJun 29, 1999
Encrypting method and apparatus, recording method, decrypting method and apparatus, and recording medium
SONY CORP91 citations97
US7266202B1Sep 4, 2007
Information processing device and method, and program storage medium
SONY CORP43 citations96
US7167564B2Jan 23, 2007
Information processing system and method
SONY CORP51 citations96
US7065214B2Jun 20, 2006
Information processing apparatus, information processing method, information processing system and recording medium
SONY CORP42 citations96
US6944763B1Sep 13, 2005
Data transmission system
SONY CORP24 citations96
US6807641B1Oct 19, 2004
Content provider system
SONY CORP65 citations96
US6697945B2Feb 24, 2004
Information processing apparatus, information processing method, information processing system and recording medium
SONY CORP63 citations96
US6256391B1Jul 3, 2001
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
SONY CORP45 citations96
US7260721B2Aug 21, 2007
Information processing method, information processing apparatus and recording medium
SONY CORP56 citations95
US7346170B2Mar 18, 2008
Information processing system and method
SONY CORP56 citations94
US7336791B2Feb 26, 2008
Information processing apparatus
SONY CORP46 citations93
US7242769B2Jul 10, 2007
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
SONY CORP10 citations93
US7216368B2May 8, 2007
Information processing apparatus for watermarking digital content
SONY CORP46 citations93
US7143445B1Nov 28, 2006
Information processing apparatus, information processing method, and program storage medium
SONY CORP62 citations93
US7073061B2Jul 4, 2006
Data transmission system
SONY CORP17 citations93
US6934463B2Aug 23, 2005
Information processing apparatus, information processing method, information processing system and recording medium
SONY CORP26 citations93
US6792539B1Sep 14, 2004
Processing method and apparatus for encrypted data transfer
SONY CORP39 citations93
US6539094B1Mar 25, 2003
Data transmission apparatus and method, data receiving apparatus and method, and data transmitting/receiving system and method
SONY CORP32 citations93
US7522726B2Apr 21, 2009
Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium
SONY CORP24 citations92
US7487549B2Feb 3, 2009
Information processing apparatus, information processing method, recording medium, and program
SONY CORP27 citations92
US7325139B2Jan 29, 2008
Information processing device, method, and program
SONY CORP25 citations92
US7269257B2Sep 11, 2007
System and method for processing information using encryption key block
SONY CORP24 citations92
US7249106B1Jul 24, 2007
Information processing method and apparatus and program storage medium for prohibiting duplication of contents in large quantities
SONY CORP27 citations92
US7093128B2Aug 15, 2006
Information recording/reproducing apparatus and method
SONY CORP27 citations92
US6911974B2Jun 28, 2005
Information processing system and method
SONY CORP33 citations92
US7801819B2Sep 21, 2010
Rendering rights delegation system and method
SONY CORP28 citations91
US8042192B2Oct 18, 2011
Information processing apparatus, information processing method, recording medium, and program
SONY CORP8 citations84
US7738662B2Jun 15, 2010
Information processing system and method
SONY CORP8 citations84
US7505599B2Mar 17, 2009
Information processing system and method for managing encrypted data with tag information
SONY CORP8 citations84
US7503073B2Mar 10, 2009
Information managing apparatus and method, recording medium, and program
SONY CORP11 citations84
US7426639B2Sep 16, 2008
Information processing apparatus and method for managing grouped devices in an encrypted environment
SONY CORP17 citations84
US7346169B2Mar 18, 2008
Information processing device and method
SONY CORP19 citations84
US7283633B2Oct 16, 2007
Information recording and/or reproducing method and information recording and/or reproducing device
SONY CORP14 citations84
US7266691B1Sep 4, 2007
Contents providing system
SONY CORP19 citations84
US7246234B1Jul 17, 2007
Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium
SONY CORP11 citations84
US7131010B2Oct 31, 2006
Data processing system, data processing method, data processing apparatus, and program providing medium
SONY CORP16 citations84
US7010124B1Mar 7, 2006
Location dependent key for decrypting copy protected material on a recording medium
SONY CORP14 citations84
US7765604B2Jul 27, 2010
Information processing method, information processing apparatus and recording medium
SONY CORP8 citations83
US6975726B2Dec 13, 2005
Data transmission system
SONY CORP8 citations82
US8005214B2Aug 23, 2011
Data transmission system
SONY CORP3 citations74
ISHIGURO RYUJI
2 patentsUS8170206B2May 1, 2012
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
ISHIGURO RYUJI9 citations92
US8594325B2Nov 26, 2013
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
ISHIGURO RYUJI5 citations83
TADA KEIKO
1 patentShowing the top 50 of 80 patents by PatentIndex Score.