Inventor
AKIYAMA KOICHIRO
JP32 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA KOICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
28 patentsUS6477649B2Nov 5, 2002
Information recording apparatus, information reproducing apparatus, and information distribution system
TOSHIBA KK156 citations99
US6463155B1Oct 8, 2002
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK102 citations98
US6772133B1Aug 3, 2004
Information recording device and information reproducting device
TOSHIBA KK71 citations97
US6665303B1Dec 16, 2003
Scheme for realizing communications through external network from contents processing device connected to local network in home environment
TOSHIBA KK72 citations96
US6650754B2Nov 18, 2003
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK63 citations96
US7389272B2Jun 17, 2008
Information recording device and information reproducing device
TOSHIBA KK13 citations92
US7343495B2Mar 11, 2008
Information recording apparatus, information reproducing apparatus, and information distribution system
TOSHIBA KK26 citations92
US7127431B2Oct 24, 2006
Information recording device and information reproducing device
TOSHIBA KK18 citations92
US7072865B2Jul 4, 2006
Broadcast receiving method and apparatus and information distributing method and apparatus
TOSHIBA KK45 citations92
US6941283B2Sep 6, 2005
Information recording device and information reproducing device
TOSHIBA KK24 citations92
US7787623B2Aug 31, 2010
Key generating apparatus, program, and method
TOSHIBA KK12 citations84
US7773747B2Aug 10, 2010
Encryption apparatus, decryption apparatus, and method
TOSHIBA KK14 citations84
US7363276B2Apr 22, 2008
Broadcast receiving method and apparatus and information distributing method and apparatus
TOSHIBA KK13 citations84
US7023862B2Apr 4, 2006
Scheme for realizing communications through external network from contents processing device connected to local network in home environment
TOSHIBA KK6 citations74
US12034850B2Jul 9, 2024
Encryption device, decryption device, encryption method, decryption method, and computer program products
TOSHIBA KK2 citations73
US11288985B2Mar 29, 2022
Encryption device, decryption device, encryption method, decryption method, encryption program product, and decryption program product
TOSHIBA KK4 citations73
US9413729B2Aug 9, 2016
Symmetric encryption apparatus and storage medium, and symmetric decryption apparatus and storage medium
TOSHIBA KK2 citations63
US8832438B2Sep 9, 2014
Digital signature generation apparatus, digital signature verification apparatus, and key generation apparatus
TOSHIBA KK2 citations63
US8046582B2Oct 25, 2011
Digital signature generation apparatus, digital signature verification apparatus, and key generation apparatus
TOSHIBA KK3 citations63
US7747871B2Jun 29, 2010
Information recording apparatus, information reproducing apparatus, and information distribution system
TOSHIBA KK3 citations63
US7688973B2Mar 30, 2010
Encryption apparatus, decryption apparatus, key generation apparatus, program, and method
TOSHIBA KK5 citations63
US6650752B2Nov 18, 2003
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK4 citations63
US7490068B2Feb 10, 2009
Apparatus and method for rendering digital content
TOSHIBA KK2 citations62
US7733844B2Jun 8, 2010
Packet filtering apparatus, packet filtering method, and computer program product
TOSHIBA KK2 citations61
US12549362B2Feb 10, 2026
Encryption device, decryption device, key generation device, encryption method, decryption method, key generation method, computer program product for encryption, computer program product for decryption, and computer program product for key generation
TOSHIBA KK0 citations52
US7836304B2Nov 16, 2010
Digital signature generation apparatus, digital signature verification apparatus, and key generation apparatus
TOSHIBA KK0 citations52
US7672905B2Mar 2, 2010
Apparatus and method for rendering digital content
TOSHIBA KK1 citations52
US7450596B2Nov 11, 2008
Scheme for realizing communications through external network from contents processing device connected to local network in home environment
TOSHIBA KK0 citations52
AKIYAMA KOICHIRO
2 patentsUS8311215B2Nov 13, 2012
Encryption apparatus, decryption apparatus, key generation apparatus, and storage medium
AKIYAMA KOICHIRO3 citations59
US8458471B2Jun 4, 2013
Digital signature generation apparatus, digital signature verification apparatus, and key generation apparatus
AKIYAMA KOICHIRO0 citations49