Patents by Inventor Kazuhiko Ishii
Kazuhiko Ishii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090158296Abstract: When an application issues an access request to a device via a driver, the application can immediately perform other processing. An IC memory 12 for performing predetermined processing such as encryption processing and decryption processing, an application for performing processing using the IC memory 12, an IC memory handler 14 for performing access processing to the IC memory 12, and a driver 12 that invokes the IC memory handler 14 according to an instruction from the application and returns a response to the effect that the instruction has been accepted to the application, are provided.Type: ApplicationFiled: April 21, 2005Publication date: June 18, 2009Applicants: NTT DoCoMo, Inc., Ken SAKAMURA, Noboru KOSHIZUKAInventors: Ken Sakamura, Noboru Koshizuka, Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo
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Patent number: 7500605Abstract: It is an object to provide a tamper resistant device and a file generation method which can store right value information such as a ticket information, and guarantee validity of the right value information without executing a digital signature processing. An IC card 102 attached to a portable terminal 100 receives, from an application 101, right value information representing a right value and a file generation message instructing generation of a rights-file. The right value information includes file data representing the right value, data size and the like. Upon determining that a file generation message is received, the IC card 102 generates a rights-file including the IC card identification ID and right value information which are previously stored in the IC card 102.Type: GrantFiled: March 17, 2006Date of Patent: March 10, 2009Assignee: NTT DoCoMo, Inc.Inventors: Kensaku Mori, Masayuki Terada, Kazuhiko Ishii, Sadayuki Hongo
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Patent number: 7416114Abstract: An electronic value transferring device such as a high speed and large capacity computer or mobile terminal device is disclosed that can function as a contactless IC card performing electronic value operations. The device is connectable to an IC card that performs electronic value operations, and includes a microprocessor for transmitting and receiving data to and from the IC card: an interface circuit for providing an IC card interface to allow the IC card to send and receive electronic values to and from other IC cards by radio; an antenna; and the microprocessor having a memory for temporarily storing plural electronic values.Type: GrantFiled: June 9, 2003Date of Patent: August 26, 2008Assignees: NTT DoCoMo, Inc.Inventors: Ken Sakamura, Noboru Koshizuka, Kensaku Mori, Kazuhiko Ishii, Hiroshi Aono, Sadayuki Hongo
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Patent number: 7403924Abstract: A portable terminal 20 according to the present invention is provided with an electronic book coupon storage 22, a book data receiver 24, an electronic book coupon deductor 25, and a book data decryptor 26. The electronic book coupon storage 22 stores an electronic book coupon used in acquisition of book data containing a plurality of page data units, along with a decryption key used in decryption of the plurality of page data units. The book data receiver 24 receives the book data from an electronic book providing server 30. The electronic book coupon deductor 25 deducts an electronic worth equivalent to a price according to page data requested to be readout, from the electronic book coupon. The book data decryptor 26 decrypts the page data in steps of one page data unit by use of the decryption key in conjunction with the deduction of the electronic worth.Type: GrantFiled: May 20, 2003Date of Patent: July 22, 2008Assignees: NTT DoCoMo, Inc.Inventors: Ken Sakamura, Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
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Publication number: 20080163251Abstract: An electronic value exchange system 100 comprises a mobile terminal 10 and a mobile terminal 20. The mobile terminal 10 causes a driver 12 to transmit an exchange offer message of electronic value V1, V2 to the mobile terminal 20. The mobile terminal 20 stores handlers that the driver 12 can execute in relationship to a message in a common table 221, and acquires a handler corresponding to the above-mentioned offer message, and notifies the exchange offer contents based on the handler to an application program 21. If the application program 21 consents to the offer contents according to the operation of a user, the electronic value V2 stored in an IC card 23 is transmitted to an IC card 13 via a driver 22 and the driver 12.Type: ApplicationFiled: April 21, 2005Publication date: July 3, 2008Inventors: Ken Sakamura, Noboru Koshizuka, Kensaku Mori, Masayuki Terada, Kazuhiko Ishii, Sadayuki Hongo
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Publication number: 20080152857Abstract: Disclosed is an adhesive which enables to obtain a bonded optical disk, wherein optical disks having a total reflection film or a translucent reflection film made of silver or a silver alloy are bonded together, which exhibits high adhesion strength between the reflection film and a cured product of the adhesive as well as between a polycarbonate substrate and the cured product of the adhesive, while having high durability equivalent to those of the conventional optical disks using translucent reflective film made of gold.Type: ApplicationFiled: August 10, 2005Publication date: June 26, 2008Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Go Mizutani, Kiyohisa Tokuda, Kazuhiko Ishii, Masahiro Naitou, Takeo Miyake
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Publication number: 20080134341Abstract: A folder containing at least one file can be created in a file storage (17) in response to a folder creation request from an owner (30) of an IC card (10), and an access authority to the folder can be set as an access control list (18A) of the folder in response to an access authority setting request from the owner (30). Then access to the file is controlled not only on the basis of the access authority to the file set by an issuer of a voucher (issuer of the file), but also on the basis of the access authority to the folder set by the owner (30).Type: ApplicationFiled: April 21, 2005Publication date: June 5, 2008Applicants: NTT DOCOMO, INC.Inventors: Ken Sakamura, Noboru Koshizuka, Kazuhiko Ishii, Masayuki Terada, Kensaku Mori, Sadayuki Hongo
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Publication number: 20080133923Abstract: Realizing a data communication device and a data communication method enabling to specify an IC memory mounted in the communication device and to perform data communication to the communication device in which the IC memory is mounted. A mobile device 100 of transmitting side accepts a domain ID specifying a detachable IC memory uniquely from an application 102, a communication driver 105 obtains an IP address of the device of correspondent on the basis of the accepted domain ID from a name server 300 storing the domain ID and the IP address being associated with each other. Then, the communication driver 105 obtains a port ID which an IC memory of the device of correspondent assigned to an application, and transmits the domain ID and the port ID together with a transmission data to the IP address. The device of correspondent rims the application based on the received port ID and executes an appropriate processing.Type: ApplicationFiled: April 21, 2005Publication date: June 5, 2008Applicants: NTT DoCoMo, Inc, Ken Sakamura, Noboru KoshizukaInventors: Ken Sakamura, Noboru Koshizuka, Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo
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Publication number: 20080109371Abstract: Between an IC card (1) and a electronic ticket server (2), upon purchasing an electronic ticket a public key cryptosystem is employed for a mutual authentication to keep a strict security, and a shared secret between the electronic ticket and a ticket collecting machine is sent on a secure channel as well as the electronic ticket. Upon usage of the electronic ticket, the IC card (1) and the ticket collecting machine (6) mutually judge whether they carry out the mutual authentication by using a public key cryptosystem or a symmetric key cryptosystem. When they determine to use the symmetric key cryptosystem, they carry out the mutual authentication by using the shared secret exchanged beforehand. When they determine to use the public key cryptosystem, they carry out the mutual authentication by using the same method as that used upon purchasing the electronic ticket.Type: ApplicationFiled: December 17, 2007Publication date: May 8, 2008Applicants: Ken SAKAMURA, Noboru KOSHIZUKA, NTT DoCoMo, IncInventors: Ken Sakamura, Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
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Patent number: 7357329Abstract: The present invention avoids duplication and loss of digital contents by a transmitter/receiver and a malicious third party when the digital contents are transmitted on a communication platform where direct communication is performed between IC cards. A data communications method relating to the present invention includes the steps of executing a predetermined command when an IC card 1a receives a predetermined trigger signal; storing a state of the IC card 1a before transmission of first digital contents; performing an encryption process on the first digital contents based on key information associated with the first digital contents; deleting the first digital contents from a holder 18 of the IC card 1a when a commit instruction indicating completion of a reception process on the encrypted first digital contents is received from a destination device 1b: and performing a return process to the state of the IC card 1a when a transmission process on the first digital contents is interrupted.Type: GrantFiled: June 9, 2003Date of Patent: April 15, 2008Assignees: NTT DoCoMo, Inc.Inventors: Ken Sakamura, Noboru Koshizuka, Kensaku Mori, Kazuhiko Ishii, Hiroshi Aono, Sadayuki Hongo
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Patent number: 7346718Abstract: An autonomous integrated circuit card includes a logic external communication interface which directly communicates with a communication device connected to an integrated circuit card terminal main body via a network, in addition to a host device interface connected to an integrated card reader/writer via a physical layer. A communication control unit includes a software module which directly communicates with the communication device via the external communication interface. A central processing unit performs authentication via the communication control unit and reads value information stored in a nonvolatile memory. Further, the central processing unit encrypts the read value information by use of an encryption processing unit and directly transmits the encrypted value information to the communication device via the communication control unit and the external communication interface.Type: GrantFiled: June 10, 2003Date of Patent: March 18, 2008Assignees: NTT DoCoMo, Inc.Inventors: Ken Sakamura, Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo
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Patent number: 7340243Abstract: Each IC card 1 notifies a server 3 of the ID of the IC card and the connection information of a terminal device to which the IC card is connected. The server 3 stores the ID and the connection information in a database 4 while associating the ID and the connection information with each other. When an IC card 1 communicates with another IC card, the IC card 1 requests the connection information concerning the destination IC card from the server 3 while specifying the ID of this IC card. The server 3 searches the database 4 for the connection information corresponding to the ID specified by the request, and notifies the requesting IC card 1 of the acquired connection information. This enables communications between IC cards even if the terminal device to which a destination IC card is connected has been changed in the past.Type: GrantFiled: June 10, 2003Date of Patent: March 4, 2008Assignees: NTT DoCoMo, Inc.Inventors: Ken Sakamura, Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo
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Publication number: 20070250455Abstract: A portable terminal according to the present invention is provided with an electronic book coupon storage, a book data receiver, an electronic book coupon deductor, and a book data decryptor. The electronic book coupon storage stores an electronic book coupon used in acquisition of book data containing a plurality of page data units, along with a decryption key used in decryption of the plurality of page data units. The book data receiver receives the book data from an electronic book providing server. The electronic book coupon deductor deducts an electronic worth equivalent to a price according to page data requested to be read out, from the electronic book coupon. The book data decryptor decrypts the page data in steps of one page data unit by use of the decryption key in conjunction with the deduction of the electronic worth.Type: ApplicationFiled: May 25, 2007Publication date: October 25, 2007Applicants: NTT DoCoMo, Inc., Ken SAKAMURA, Noboru KOSHIZUKAInventors: Ken Sakamura, Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
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Patent number: 7287165Abstract: An IC card 16 according to the present invention is provided with an electronic value storing means, a request acquiring means, a verifying means, and an output means. The request acquiring means acquires an access request from display application 151 to electronic value 161 stored in the electronic value storing means, along with application authentication information held by the display application 151. The verifying means determines the validity of the application authentication information in accordance with the access request acquired by the request acquiring means. When the verifying means determines that the application authentication information is valid, the output means outputs substantive information of the electronic value 161 to the display application 151.Type: GrantFiled: April 22, 2003Date of Patent: October 23, 2007Assignee: NTT DoCoMo, Inc.Inventors: Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
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Publication number: 20070204148Abstract: An IC card (10) is provided with a file creator (16) for creating a voucher file (hereinafter referred to as “file”); an access control list setter (17) for setting an access authority to a created file; an authenticator (14) for performing mutual authentication with an authority recipient (authority recipient to which the whole or part of the access authority to the file has been transferred) and for examining authority transfer certificate data presented by the authority recipient; and an operation controller (15) for usually controlling an operation on the file on the basis of the set access authority and for, when the result of the examination of the authority transfer certificate data is normal, controlling the operation on the file by the authority recipient, based on the transfer content of the access authority indicated in the authority transfer certificate data, instead of the set access authority.Type: ApplicationFiled: April 21, 2005Publication date: August 30, 2007Applicant: NOBORU KOSHIZUKAInventors: Ken Sakamura, Noboru Koshizuka, Kazuhiko Ishii, Masayuki Terada, Kensaku Mori, Sadayuki Hongo
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Publication number: 20070201599Abstract: In order to provide a reactor power control apparatus which can maintain a stable water level when reactivity control based on control rod operation and water level adjustment is performed, this invention comprises a turbine control which calculates the load set error signal from the error between the set target generator power value and the generator power that was fed back and outputs to the turbine control apparatus; control rod control in the natural circulation boiling water reactor which calculates the control rod operation signal and outputs it to the control rod drive control apparatus; water level control inside the natural circulation boiling water reactor which calculates the water level set signal and outputs it to the feed water control apparatus; and the switch determining device which selectively outputs one of the control rod control and water level control based on the generator power that was fed back, the reactor power and water level, as well as switching rules and determination values.Type: ApplicationFiled: January 25, 2007Publication date: August 30, 2007Inventors: Atsushi Fushimi, Setsuo Arita, Kazuhiko Ishii, Yoshihiko Ishii, Shin Hasegawa, Atsutoshi Mizuide
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Publication number: 20070149867Abstract: A server apparatus including: an electronic value receiving unit for receiving the electronic value from a communication terminal; an electronic worth charging unit for charging the electronic value received by the electronic value receiving unit, with an electronic worth; and an electronic value transmitting unit for transmitting the electronic value charged with the electronic worth by the electronic worth charging unit, to the communication terminal.Type: ApplicationFiled: March 9, 2007Publication date: June 28, 2007Applicants: NTT DoCoMo, Inc, Ken SAKAMURA, Noboru KOSHIZUKAInventors: Ken Sakamura, Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo
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Publication number: 20060264588Abstract: The present invention enables to provide a highly durable protective coating film or adhesive layer for high-density optical disks with less warp, which is superior in transmission for blue lasers, transparency and low water-absorption, by using an ultraviolet-curing resin composition essentially comprising a compound (A) represented by the following general formula (I), [Chemical Formula 7], (wherein, R represents each independently a hydrogen atom or a C1-C3 alkyl group, and n and m each represents the number of repetition from 0 to 5) and a photopolymerization initiator.Type: ApplicationFiled: August 24, 2004Publication date: November 23, 2006Inventors: Kiyohisa Tokuda, Kazuhiko Ishii, Go Mizutani, Takeo Miyake
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Publication number: 20060259430Abstract: A user device uses, instead of agreement information, only second session information contained in the agreement information, to generate an electronic signature for information containing the session information and information indicating an abort request, and outputs abort request information containing the session information, the information indicating the abort request, and the electronic signature, whereby transmission/reception can be performed without unnecessary information. Similarly, it may be configured to use only the second session information to generate an electronic signature for information containing the session information and information indicating a commitment request, and to output commitment request information containing the electronic signature. Since a third-party device defines a third session state as abort in correspondence to the second session information, it is able to manage states while appropriately discriminating a plurality of concurrent electronic value exchanges.Type: ApplicationFiled: March 9, 2006Publication date: November 16, 2006Applicant: NTT DoCoMo, IncInventors: Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo
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Publication number: 20060245594Abstract: In a mobile terminal that performs transmission and reception of a message between an IC card and a terminal program, the security is improved by preventing an imposture of a source of a message or an interception of a message. A mobile terminal comprises an IC card and a terminal program. The terminal program generates a program identifier (i1:1) from a domain ID “i1” of the IC card and a port number “1” that can be updated in the IC card. Then, a message is transmitted, the source ID of which is the program identifier and the destination ID of which is the identifier “i1:0” of the IC card. Upon receipt of the message, the IC card collates the domain ID with the domain ID that the IC card has, as to the source ID. When they coincide, processing in accordance with the contents of the above-mentioned message is performed.Type: ApplicationFiled: March 14, 2006Publication date: November 2, 2006Applicant: NTT DoCoMo, Inc.Inventors: Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo