Inventor
ENDOH NAOKI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “ENDOH NAOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
19 patentsUS6301663B1Oct 9, 2001
Copy protection apparatus and information recording medium used in this copy protection apparatus
TOSHIBA KK139 citations99
US6463155B1Oct 8, 2002
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK102 citations98
US6347145B2Feb 12, 2002
Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys
TOSHIBA KK97 citations98
US5170388ADec 8, 1992
Image/audio information recording/reproduction apparatus with built-in semiconductor memory
TOSHIBA KK118 citations98
US6085323AJul 4, 2000
Information processing system having function of securely protecting confidential information
TOSHIBA KK224 citations97
US6650754B2Nov 18, 2003
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK63 citations96
US6438692B2Aug 20, 2002
Copy protection apparatus and information recording medium used in this copy protection apparatus
TOSHIBA KK43 citations96
US5984174ANov 16, 1999
Method of printing bar codes on pieces to deliver, and method and system for encoding and decoding bar codes
TOSHIBA KK55 citations96
US5819103AOct 6, 1998
Information recording/reproducing apparatus and method
TOSHIBA KK90 citations96
US6556679B1Apr 29, 2003
Copy-guard system and information recording medium used in the same system
TOSHIBA KK66 citations95
US7096357B1Aug 22, 2006
Cryptographic communication terminal, cryptographic communication center apparatus, cryptographic communication system, and storage medium
TOSHIBA KK25 citations92
US6751321B1Jun 15, 2004
Digital data reproduction device
TOSHIBA KK47 citations92
US5253120AOct 12, 1993
Recording/reproducing apparatus for more efficient recording and reproduction of audio and video signals
TOSHIBA KK35 citations92
US7433474B2Oct 7, 2008
Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys
TOSHIBA KK13 citations84
US5818031AOct 6, 1998
Bar code encoding system using four-state codes
TOSHIBA KK15 citations74
US5042037AAug 20, 1991
Digital data modulation circuit having a DC component suppression function
TOSHIBA KK8 citations74
US6650752B2Nov 18, 2003
Broadcast reception device and contract management device using common master key in conditional access broadcast system
TOSHIBA KK4 citations63
US5101394AMar 31, 1992
Data reproducing apparatus
TOSHIBA KK5 citations63
US7233667B1Jun 19, 2007
Record medium, record medium manufacturing device, computer readable record medium on which program is recorded, and data presentation device
TOSHIBA KK0 citations41
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
3 patentsUS6009174ADec 28, 1999
Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD57 citations96
US6160890ADec 12, 2000
Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations93
US6151394ANov 21, 2000
Encrypted communication system that limits the damage caused when a secret key has been leaked
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations93