Patents by Inventor Makoto Aikawa

Makoto Aikawa 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).

  • Publication number: 20090112550
    Abstract: A system and method for generating a worst case current waveform for testing of integrated circuit devices are provided. Architectural analysis of an integrated circuit device is first performed to determine an initial worst case power workload to be applied to the integrated circuit device. Thereafter, the derived worst case power workload is applied to a model and is simulated to generate a worst case current waveform that is input to an electrical model of the integrated circuit device to generate a worst case noise budget value. The worst case noise budget value is then compared to measured noise from application of the worst case power workload to a hardware implemented integrated circuit device. The worst case current waveform may be selected for future testing of integrated circuit devices or modifications to the simulation models may be performed and the process repeated based on the results of the comparison.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Inventors: Makoto Aikawa, Jonathan J. DeMent, Sang H. Dhong, Brian K. Flachs, Gilles Gervais, Iwao Takiguchi, Tetsuji Tamura
  • Publication number: 20090064296
    Abstract: A first information-communication device generates first biometric pattern used for comparison based on user biometric information retrieved by a biometric sensor, and sends the generated first biometric pattern to a second biometric information-communication device. The second information-communication device compares the first biometric pattern sent from the first information-communication device with second biometric pattern, which is user biometric pattern stored in memory, and sends the second biometric pattern to the first information-communication device when the compared biometric pattern matches. The first information-communication device then stores the second biometric pattern sent from the second information-communication device.
    Type: Application
    Filed: August 8, 2008
    Publication date: March 5, 2009
    Inventors: Makoto AIKAWA, Shinichiro Fukushima, Hiroyuki Higaki
  • Patent number: 7486096
    Abstract: In one embodiment, a test system tests a device under test (DUT). The DUT includes an internal test controller that executes built-in self-test (BIST programs. Built-in self-test programs include array-based automatic built-in self-test programs, discrete and combinational logic built-in self-test programs, and functional architecture verification programs (AVPs). An external manufacturing system test controller manages the internal test controller within the DUT and determines minimum operating voltage levels for a power supply input voltage that supplies the DUT. A logic simulator provides a modeling capability to further enhance the development of minimum voltage power supply input operational values for the DUT.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: February 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Sang H. Dhong, Brian Flachs, Gilles Gervais, Charles R. Johns, Brad W. Michael, Makoto Aikawa, Iwao Takiguchi, Tetsuji Tamura
  • Publication number: 20090008444
    Abstract: A management apparatus including a portable terminal identifying module to receive card information from a non-contact IC card processing unit having a module to communicate with an IC card without contact.
    Type: Application
    Filed: March 25, 2008
    Publication date: January 8, 2009
    Inventors: Shinichiro FUKUSHIMA, Kazunori Hashimoto, Makoto Aikawa, Hidenori Nanami, Yutaka Takami
  • Publication number: 20080317436
    Abstract: A digital signal recorder for recording a digital signal on a recording medium, including: an input circuit which receives a transmitted digital signal encrypted for protecting said transmitted digital signal using a first encryption method; a decrypting circuit which decrypts said transmitted digital signal into an original data; a key generation circuit which performs a prescribed arithmetic operation to generate a key; an encrypting circuit which receives said key and said original data, and encrypts said original data with said key using a second encryption method; a recording circuit which records, onto said recording medium, a key information which is used for decrypting said encrypted digital signal together with said encrypted digital signal, and a timing control circuit which controls decrypting timing of said decrypting circuit and encryption timing of said encrypting circuit; wherein said key generation circuit has a function for updating said key in connection with recording units of said recordin
    Type: Application
    Filed: September 2, 2008
    Publication date: December 25, 2008
    Inventors: Manabu SASAMOTO, Makoto AIKAWA, Hiroo OKAMOTO, Takaharu NOGUCHI
  • Patent number: 7456446
    Abstract: A semiconductor device of the generation with the minimum processing dimensions of 90 nm, or later, wherein variation of processing dimensions of gate electrodes in a logic block and a power source noise are suppressed; wherein a gate electrode formed to have a comb-shaped pattern is formed on a normal cell region, a dummy gate electrode formed to have a comb-shaped pattern is formed on a vacant region, a wiring for applying a predetermined voltage is connected respectively to at least a part of the dummy gate and the semiconductor substrate (source drain regions), and an electrostatic capacity between the part of the dummy gate electrode and the semiconductor substrate constitutes a decoupling capacitor of the power source.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: November 25, 2008
    Assignee: Sony Corporation
    Inventors: Koichi Tahira, Hiroki Usui, Hiroshi Hasegawa, Makoto Aikawa
  • Publication number: 20080262770
    Abstract: Apparatuses and method capable of reliably tracking processes through which products have passed without calling for expensive setup are necessary in production and distribution processes of the products. A process management apparatus including a data transmission/reception unit to and from an RFID tag of an information recording medium and a data generation unit comprises a process data generation unit for representing a process, a process pass certificate data generation unit for generating process data pass certificate data and a transmission/reception unit for the process data with the information recording medium and the process pass certificate data can track the processes through which the object products have passed.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 23, 2008
    Inventors: Hiroyuki HIGAKI, Shinichirou Fukushima, Makoto Aikawa, Atsushi Honzawa, Yuuichi Kobayashi, Akira Kishida
  • Publication number: 20080224833
    Abstract: An information management system comprises information processing unit 51 which reads out self ID number data and reference ID number data from each RFID tag, and additionally writes all the self ID number data and reference ID number data into an ID table. The data in each row of the ID table is the self ID number data and reference ID number data that are stored in each RFID tag. “0” is set to all rows of a link flag setting region, and it is checked whether a value in the M-th row of the reference ID number data is equal to a value in the N-th row of the self ID number data. If both are equal, then “1” is set to the N-th row in the link flag setting region. These processing operations are repeated for all rows of the ID table.
    Type: Application
    Filed: February 15, 2008
    Publication date: September 18, 2008
    Inventors: Makoto Aikawa, Shinichiro Fukushima, Masumi Moritani, Hiroyuki Higaki, Yuichi Kobayashi, Atsushi Honzawa, Akira Kishida
  • Publication number: 20080189090
    Abstract: A system and method for determining a guard band for an operating voltage of an integrated circuit device are provided. The system and method provide a mechanism for calculating the guard band based on a comparison of simulated noise obtained from a simulation of the integrated circuit device using a worst case waveform stimuli with simulated or measured power supply noise of a workload/test pattern that may be achieved using testing equipment. A scaling factor for the guard band is determined by comparing results of a simulation of a workload/test pattern with measured results of the workload/test pattern as applied to a hardware implementation of the integrated circuit device. This scaling factor is applied to a difference between the noise generated through simulation of the workload/test pattern and the noise generated through simulation of the worst case current waveform to generate a guard band value.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 7, 2008
    Inventors: Makoto Aikawa, Sang H. Dhong, Brian Flachs, Gilles Gervais, Yoichi Nishino, Iwao Takiguchi, Tetsuji Tamura, Yaping Zhou
  • Publication number: 20080180212
    Abstract: A settlement terminal including a password input unit for inputting the password of a user and a biometrics information acquisition unit for acquiring the biometrics information of the user based on a predetermined biometrics authentication method is disclosed. Before person identification of the user, the settlement terminal receives a person identification method list containing available person identification methods and the person identification method priority order indicating the priority order of the person identification method from the IC card. In accordance with the person identification method list and the priority order of the person identification method, the settlement terminal thus determines whether to conduct the password verification using a password input unit or the biometrics authentication using a biometrics information acquisition unit.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 31, 2008
    Inventors: Makoto AIKAWA, Yutaka Takami, Shigeyuki Ito, Kazunori Hashimoto
  • Patent number: 7404523
    Abstract: Information recorded by an application provider in an IC card can be referred to, read out or changed by another application provider. The IC card has a plurality of cipher keys for reading out or writing the information recorded in the IC card, and provides a cipher key conversion function for encryption with a file capable of being managed, read out or written by the application provider himself using the cipher key. By the cipher key conversion function, data can be read out or written from or in the file of the other application provider.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: July 29, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Takami, Shinichiro Fukushima, Kazunori Hashimoto, Makoto Aikawa, Tetsuharu Inamitsu
  • Publication number: 20080100328
    Abstract: In one embodiment, a test system tests a device under test (DUT). The DUT includes an internal test controller that executes built-in self-test (BIST programs. Built-in self-test programs include array-based automatic built-in self-test programs, discrete and combinational logic built-in self-test programs, and functional architecture verification programs (AVPs). An external manufacturing system test controller manages the internal test controller within the DUT and determines minimum operating voltage levels for a power supply input voltage that supplies the DUT. A logic simulator provides a modeling capability to further enhance the development of minimum voltage power supply input operational values for the DUT.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Applicant: IBM Corporation
    Inventors: Sang H. Dhong, Brian Flachs, Gilles Gervais, Charles R. Johns, Brad W. Michael, Makoto Aikawa, Iwao Takiguchi, Tetsuji Tamura
  • Patent number: 7360091
    Abstract: A smart card and a settlement terminal are provided by which, when common-key cryptography is used for value transfer between smart cards, the security of the whole system can be improved by enabling easy updating of a cryptographic key used for the value transfer. A smart card transmits/receives value data to/from another smart card. The smart card includes an information accumulating unit for accumulating value data, a transfer key used to update the value data, and an update key used to update the transfer key; a communication unit for receiving a transfer key encrypted by use of the update key, the transfer key being transmitted from another smart card; and an arithmetic processing unit for decrypting the encrypted transfer key by use of the update key to update the transfer key accumulated in the information accumulating unit by use of the decrypted transfer key.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: April 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Aikawa, Yutaka Takami, Shinichiro Fukushima
  • Patent number: 7356645
    Abstract: In a portable terminal having an IC card, the outstanding SF value, the commuter pass information and the conditions for the corresponding operation to charge the SF value or renew the validity period of the commuter pass are stored in the IC card. The outstanding SF value and the validity period of the commuter pass are checked at a predetermined timing. In the case where the outstanding SF value and the validity period satisfy the conditions for the corresponding operation (in the case where the outstanding SF value is reduced to less than a predetermined amount, for example), the set corresponding operation is performed. Thus, a predetermined amount is charged against the outstanding SF value, or the oncoming expiry of the validity period of the commuter pass is notified. The conditions for the corresponding operation can be set and changed appropriately at the portable terminal.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: April 8, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shinichiro Fukushima, Kazunori Hashimoto, Makoto Aikawa, Hidenori Nanami, Yutaka Takami
  • Publication number: 20080067243
    Abstract: In a settlement transaction system or settlement transaction method using the system, the system includes a content providing server conducting a digital broadcast, for example, for a CS broadcast, a BS broadcast, a CATV, or a broadcast using ground waves; a settlement server to execute settlement transaction or settlement transaction, an order placement managing server to execute order placement processing, and an order managing server which receives an order of a request from a user to purchase articles and which sends an associated indication to the settlement server and the order placement managing server according to information of the order. The user operates a terminal in which an IC card communication application to communicate with an IC card is only installed. It then becomes possible to reduce a load imposed onto the system in association with a change to an existing digital broadcast system.
    Type: Application
    Filed: October 30, 2007
    Publication date: March 20, 2008
    Applicant: HITACHI, LTD.
    Inventors: Kazunori Hashimoto, Yutaka Takami, Makoto Aikawa
  • Publication number: 20080056544
    Abstract: A biometric authentication apparatus for identifying a subject person by using biometric information of a user has memories and a processing unit for performing biometric authentication. The memories and store a remaining trial number whose value is reduced each time biometric authentication fails. The processing unit generates a lower limit value smaller than the remaining trial number at the start of biometric authentication, performs biometric authentication until the reduced remaining trial number becomes equal to or smaller than the lower limit value, and generate alarm data for issuing alarm to the user when the reduced trial number becomes equal to or smaller than the lower limit value.
    Type: Application
    Filed: May 23, 2007
    Publication date: March 6, 2008
    Inventors: Makoto Aikawa, Shoko Hatanaka, Kazunori Hashimoto, Shigeyuki Ito, Yutaka Takami
  • Publication number: 20070300082
    Abstract: A technology for supplying a power supply voltage to a microprocessor. Before normal arithmetic processing of the microprocessor, duty cycle correction process for adjusting the duty cycle of a clock signal inside the microprocessor is performed. In the duty cycle correction process for adjusting the duty cycle, the duty cycle of the clock signal is adjusted so as to minimize the power voltage at which the microprocessor is still operable.
    Type: Application
    Filed: June 21, 2006
    Publication date: December 27, 2007
    Applicants: Sony Computer Entertainment Inc., International Business Machines Corporation, Toshiba America Electronic Components, Inc.
    Inventors: Yosuke Muraki, Tetsuji Tamura, Iwao Takiguchi, Makoto Aikawa, Eskinder Hailu, Byron Lee Krauter, Stephen Douglas Weitzel, Jieming Qi, Kazuhiko Miki, David William Boerstler, Gilles Gervais, Kirk David Peterson, Robert Walter Berry, Sang Hoo Dhong
  • Publication number: 20070246530
    Abstract: In a settlement transaction system or settlement transaction method using the system, the system includes a content providing server conducting a digital broadcast, for example, for a CS broadcast, a BS broadcast, a CATV, or a broadcast using ground waves; a settlement server to execute settlement transaction or settlement transaction, an order placement managing server to execute order placement processing, and an order managing server which receives an order of a request from a user to purchase articles and which sends an associated indication to the settlement server and the order placement managing server according to information of the order. The user operates a terminal in which an IC card communication application to communicate with an IC card is only installed. It then becomes possible to reduce a load imposed onto the system in association with a change to an existing digital broadcast system.
    Type: Application
    Filed: July 5, 2007
    Publication date: October 25, 2007
    Applicant: HITACHI, LTD.
    Inventors: Kazunori Hashimoto, Yutaka Takami, Makoto Aikawa
  • Patent number: 7263723
    Abstract: The present invention provides a method and an apparatus that, when a copying is limited as “Copy One Generation”, prevent the copying from being made into infinite number of storage media without limitation, and thereby protect the profit of a copyright holder concerned. In the present invention, when outputting digital information whose copying is limited to external appliances connected to plural outputting circuits (315A, 315B, or 72A to 72D), the total number of external appliances to which the digital information is to be outputted is limited within a predetermined constant. In particular, a control circuit (311, or 73) limits the number in which to perform authentications of the external appliances connected to the plural outputting circuits. This makes it possible to limit, within the predetermined constant, the total number of the external appliances to which the digital information is to be outputted.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: August 28, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Hiroo Okamoto, Hitoaki Owashi, Atsushi Yoshioka, Yoshimichi Kudo, Makoto Aikawa
  • Patent number: 7246739
    Abstract: In a settlement transaction system or settlement transaction method using the system, the system includes a content providing server conducting a digital broadcast, for example, for a CS broadcast, a BS broadcast, a CATV, or a broadcast using ground waves; a settlement server to execute settlement transaction or settlement transaction, an order placement managing server to execute order placement processing, and an order managing server which receives an order of a request from a user to purchase articles and which sends an associated indication to the settlement server and the order placement managing server according to information of the order. The user operates a terminal in which an IC card communication application to communicate with an IC card is only installed. It then becomes possible to reduce a load imposed onto the system in association with a change to an existing digital broadcast system.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: July 24, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kazunori Hashimoto, Yutaka Takami, Makoto Aikawa