LexDanaLexDanabeta
Inventor

Makoto Tatebayashi

Inventor
Takarazuka, JP

Overview

92→
Patents
1993–2015
Patent span
Physics
Primary field (CPC G)

Patents· 92 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication29%
G06FElectric digital data processing23%
G11BInformation storage based on relative movement between record carrier and transducer16%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes7%
H04NPictorial communication, e.g. television7%
G09CCiphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy4%
G11CStatic stores3%
Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids3%
G06KGraphical data reading1%
H04MTelephonic communication1%
PatentTitleYear
9,130,741'Data protection system that protects data by encrypting the data'20158,661,553'Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus'20148,416,953'Data protection system that protects data by encrypting the data'20138,275,998'Encryption device, key distribution device and key distribution system'20128,144,869'Content protection system, key data generation apparatus, and terminal apparatus'20128,140,675'Content reproduction apparatus'20128,132,024'Digital work protection system, recording apparatus, reproduction apparatus, and recording medium'20128,127,368'Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus'20128,048,174'Theft prevention system'20118,051,284'Encryption communications system'20117,996,914'Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus'20117,929,688'Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof'20117,886,365'Content-log analyzing system and data-communication controlling device'20117,865,716'Encryption device, key distribution device and key distribution system'20117,831,831'Authentication communication system, authentication communication apparatus, and authentication communication method'20107,813,512'Encrypted communication system and communication device'20107,739,519'Secure device'20107,707,430'Digital content protection system'20107,702,109'Content recording/reproducing system, distribution device, reproducing device, and recording device'20107,657,739'Authentication system'20107,647,646'Information input/output system, key management device, and user device'20107,620,993'Copyright protection system, key generation apparatus, recording apparatus, reproduction apparatus, read-out apparatus, decryption apparatus, recording medium, recording method and program'20097,603,554'Encryption communication system'20097,577,251'Data player, digital contents player, playback system, data embedding apparatus, and embedded data detection apparatus'20097,555,779'Copyright protection system, recording device, and reproduction device'20097,542,568'Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device'2009RE040710'Data converter for performing exponentiation in polynomial residue class ring with value in finite field as coefficient'20097,505,584'Contents management method, contents management apparatus, and recording medium'20097,503,066'Deactivation system'20097,484,090'Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system'20097,471,792'Key agreement system, shared-key generation apparatus, and shared-key recovery apparatus'20087,426,494'Rental system'20087,404,076'Encrypted data delivery system'20087,400,725'Information recording medium for recording a scrambled part of content information, and method and apparatus for reproducing information recorded therein'20087,394,902'Encryption apparatus, decryption apparatus and encryption system'20087,395,425'Data protection system that protects data by encrypting the data'20087,392,225'Revocation information updating method, revocation information updating apparatus and storage medium'20087,386,618'Distribution system, distribution apparatus, and reception apparatus for distributing contents having usage expiry'20087,386,126'Content protection system, key data generation apparatus, and terminal apparatus'20087,373,503'Public key certificate revocation list generation apparatus, revocation judgement apparatus, and authentication system'20087,359,511'Encryption transmission system'20087,298,845'Digital content protection system'20077,296,147'Authentication system and key registration apparatus'20077,272,229'Digital work protection system, key management apparatus, and user apparatus'20077,254,705'Service providing system in which services are provided from service provider apparatus to service user apparatus via network'20077,246,247'Secure device'20077,233,662'Numerical array output device, a numerical array output method, an encryption device, and a decryption device'20077,206,412'Reception terminal, key management apparatus, and key updating method for public key cryptosystem'20077,181,008'Contents management method, content management apparatus, and recording medium'20077,155,610'Cryptocommunication system, transmission apparatus, and reception apparatus'20067,155,607'Method for authentication between apparatuses using challenge and response system'20067,137,012'Storage medium and contents protection method using the storage medium'20067,120,251'Data player, digital contents player, playback system, data embedding apparatus, and embedded data detection apparatus'20067,065,648'Mutual authentication method, recording apparatus, reproducing apparatus, and recording medium'20067,062,652'Semiconductor memory card, data reading apparatus and data reading/reproducing apparatus'20067,023,362'Positional information storage system and method, semiconductor memory, and program'20066,995,692'Data converter and method thereof'20066,971,022'Cryptographic apparatus for performing cryptography on a specified area of content data'20056,917,684'Method of encryption and decryption with block number dependant key sets, each set having a different number of keys'20056,891,950'Extended key generator, encryption/decryption unit, extended key generation method, and storage medium'20056,862,582'Production protection system dealing with contents that are digital production'20056,859,535'Digital content protection system'20056,850,914'Revocation information updating method, revocation informaton updating apparatus and storage medium'20056,789,192'Semiconductor memory card, data reading apparatus, and data reading/reproducing apparatus'20046,687,683'Production protection system dealing with contents that are digital production'20046,654,883'Device authentication and encrypted communication system offering increased security'20036,606,707'Semiconductor memory card'20036,581,160'Revocation information updating method, revocation information updating apparatus and storage medium'20036,550,009'Encryption system for distributing a common crypt key'20036,539,468'Data copying system, data copying method, data reading apparatus, data writing apparatus and data recording medium'20036,496,930'Message receiving apparatus and message transmitting apparatus'20026,459,792'Block cipher using key data merged with an intermediate block generated from a previous block'20026,359,986'Encryption system capable of specifying a type of an encrytion device that produced a distribution medium'20026,289,102'Apparatus and method for preventing unauthorized use of information recorded on an information recording medium'20016,289,314'Pay information providing system for descrambling information from plural sources and rescrambling the information before sending to a terminal or terminals'20016,182,215'Information devices which select and use one out of plurality of encryption utilization protocols for protecting copyrights of digital productions'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'20006,058,476'Encryption apparatus for ensuring security in communication between devices'20006,049,611'One-way data conversion apparatus and device authentication system'20006,047,103'Data transmitter, data transmitting method, data receiver, information processor, and information recording medium'20006,034,618'Device authentication system which allows the authentication function to be changed'20006,028,937'Communication device which performs two-way encryption authentication in challenge response format'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'19995,825,885'Bit agitator'19985,790,667'Personal authentication method'19985,751,810'Bit agitator'19985,442,707'Method for generating and verifying electronic signatures and privacy communication using elliptic curves'19955,351,297'Method of privacy communication using elliptic curves'19945,351,299'Apparatus and method for data encryption with block selection keys and data encryption keys'19945,272,755'Public key cryptosystem with an elliptic curve'19935,199,070'Method for generating a public key'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2009Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (61)· patent assignee history
1993–2014Based in Takarazuka, JP· patent location history
1993Based in Osaka, JP· patent location history
2000–2009Patents assigned to TOSHIBA KK (8)· patent assignee history
2003–2015Based in Hyogo, JP· patent location history
2008–2015Patents assigned to PANASONIC CORP (30)· patent assignee history
2008–2011Based in Takaraduka, JP· patent location history
2009Based in Takarazka, JP· patent location history
2012–2014Patents assigned to TATEBAYASHI MAKOTO (7)· patent assignee history
2012–2013Patents assigned to NAKANO TOSHIHISA (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD611993–2009
PANASONIC CORP302008–2015
TOSHIBA KK82000–2009
TATEBAYASHI MAKOTOself72012–2014
NAKANO TOSHIHISA42012–2013
Locations
LocationPatentsSpan
Takarazuka, JP801993–2014
Hyogo, JP82003–2015
Takaraduka, JP22008–2011
Takarazka, JP12009
Osaka, JP11993