Inventor
Naoki Endoh
Inventor
Tokyo, JP
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer29%
H04NPictorial communication, e.g. television29%
H04LTransmission of digital information, e.g. telegraphic communication20%
H04HBroadcast communication7%
G06FElectric digital data processing4%
G06TImage data processing or generation, in general4%
G06KGraphical data reading2%
G07BTicket-issuing apparatus2%
H04KSecret communication2%
PatentTitleYear
7,433,474'Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys'20087,233,667'Record medium, record medium manufacturing device, computer readable record medium on which program is recorded, and data presentation device'20077,096,357'Cryptographic communication terminal, cryptographic communication center apparatus, cryptographic communication system, and storage medium'20066,888,943'Multimedia adaptive scrambling system (MASS)'20056,751,321'Digital data reproduction device'20046,650,754'Broadcast reception device and contract management device using common master key in conditional access broadcast system'20036,650,752'Broadcast reception device and contract management device using common master key in conditional access broadcast system'20036,556,679'Copy-guard system and information recording medium used in the same system'20036,463,155'Broadcast reception device and contract management device using common master key in conditional access broadcast system'20026,438,692'Copy protection apparatus and information recording medium used in this copy protection apparatus'20026,347,145'Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys'20026,301,663'Copy protection apparatus and information recording medium used in this copy protection apparatus'20016,160,890'Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded'20006,151,394'Encrypted communication system that limits the damage caused when a secret key has been leaked'20006,085,323'Information processing system having function of securely protecting confidential information'20006,009,174'Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded'19995,984,174'Method of printing bar codes on pieces to deliver, and method and system for encoding and decoding bar codes'19995,818,031'Bar code encoding system using four-state codes'19985,819,103'Information recording/reproducing apparatus and method'19985,253,120'Recording/reproducing apparatus for more efficient recording and reproduction of audio and video signals'19935,170,388'Image/audio information recording/reproduction apparatus with built-in semiconductor memory'19925,101,394'Data reproducing apparatus'19925,042,037'Digital data modulation circuit having a DC component suppression function'19914,553,131'Method and apparatus for encoding a binary data stream into a binary code stream'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1999Patents assigned to TOKYO SHIBAURA ELECTRIC CO (2)· patent assignee history
1985–1993Based in Yokohama, JP· patent location history
1991–2008Patents assigned to TOSHIBA KK (21)· patent assignee history
1992–2007Based in Tokyo, JP· patent location history
1998–2008Based in Chiba, JP· patent location history
1999–2000Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (3)· patent assignee history
1999–2006Based in Fuchu, JP· patent location history
2005Patents assigned to VERANCE CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TOSHIBA KK | 21 | 1991–2008 |
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 3 | 1999–2000 |
| TOKYO SHIBAURA ELECTRIC CO | 2 | 1985–1999 |
| VERANCE CORP | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 10 | 1992–2007 |
| Chiba, JP | 6 | 1998–2008 |
| Fuchu, JP | 4 | 1999–2006 |
| Yokohama, JP | 4 | 1985–1993 |