Patents by Inventor Yoshikatsu Ito

Yoshikatsu Ito 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: 20180375374
    Abstract: An information terminal includes: a first communication unit that performs wireless communication with a wireless base station connected to a wide area network; a second communication unit that performs communication by a communication scheme different from the first communication unit; and a controller that: controls the second communication unit to receive first management information from a power management system that is installed in a facility and includes a storage battery, the first management information including information relating to the storage battery; and controls the first communication unit to transmit second management information generated based on the first management information received, to a server outside the facility as a destination, the server being connected to the wide area network.
    Type: Application
    Filed: December 19, 2016
    Publication date: December 27, 2018
    Inventors: Yoshikatsu ITO, Nobuhiro KITAMURA, Hirotada HIGASHIHAMA
  • Patent number: 9590422
    Abstract: An autonomous distribution board receives feeding of power via a distribution board for a period during which grid power is supplied from a grid power source, while receiving power via an autonomous terminal of a power conversion apparatus for a period during which supplying of grid power from grid power source is stopped. Autonomous distribution board is connected with a specific load and the like. A measurement point switching apparatus is configured to select one from a current sensor configured to monitor a current that flows through a main breaker, and a current sensor configured to monitor a current that is supplied from power conversion apparatus to autonomous distribution board. A fuel battery is configured to adjust an output thereof based on an output of the selected one so that power by fuel battery is consumed by a general load, specific load and the like.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: March 7, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Satoru Inakagata, Hiroshi Nagasato, Hiroaki Kaku, Yoshikatsu Ito, Kiyoshi Ando, Yasuhisa Ihira
  • Publication number: 20150318700
    Abstract: An autonomous distribution board receives feeding of power via a distribution board for a period during which grid power is supplied from a grid power source, while receiving power via an autonomous terminal of a power conversion apparatus for a period during which supplying of grid power from grid power source is stopped. Autonomous distribution board is connected with a specific load and the like. A measurement point switching apparatus is configured to select one from a current sensor configured to monitor a current that flows through a main breaker, and a current sensor configured to monitor a current that is supplied from power conversion apparatus to autonomous distribution board. A fuel battery is configured to adjust an output thereof based on an output of the selected one so that power by fuel battery is consumed by a general load, specific load and the like.
    Type: Application
    Filed: November 14, 2013
    Publication date: November 5, 2015
    Inventors: Satoru INAKAGATA, Hiroshi NAGASATO, Hiroaki KAKU, Yoshikatsu ITO, Kiyoshi ANDO, Yasuhisa IHIRA
  • Patent number: 9106077
    Abstract: A power control apparatus includes: a control unit that controls discharged power of a first battery and discharged power of a second battery; and a power acquisition unit that acquires a total power to be supplied from the first and second batteries to a load device connected to the first and second batteries. The control unit: in a first period, changes the discharged power of the first battery according to a change in the acquired total power, and changes the discharged power of the second battery toward a first direction in which the discharged power of the second battery approximates the discharged power of the first battery; and, in a second period after the first period, changes the discharged power of the second battery according to the change in the acquired total power, and changes the discharged power of the first battery toward a second direction opposite the first direction.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: August 11, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayuki Nakahara, Tatsuto Kinjo, Takahiro Kudoh, Yoshikatsu Ito
  • Publication number: 20130134946
    Abstract: A power control apparatus includes: a control unit that controls discharged power of a first battery and discharged power of a second battery; and a power acquisition unit that acquires a total power to be supplied from the first and second batteries to a load device connected to the first and second batteries. The control unit: in a first period, changes the discharged power of the first battery according to a change in the acquired total power, and changes the discharged power of the second battery toward a first direction in which the discharged power of the second battery approximates the discharged power of the first battery; and, in a second period after the first period, changes the discharged power of the second battery according to the change in the acquired total power, and changes the discharged power of the first battery toward a second direction opposite the first direction.
    Type: Application
    Filed: March 14, 2012
    Publication date: May 30, 2013
    Inventors: Masayuki Nakahara, Tatsuto Kinjo, Takahiro Kudoh, Yoshikatsu Ito
  • Patent number: 8448259
    Abstract: A content playback device of the present invention includes a playback unit 200 operable to play back a content; a normal storage unit 250 that is not tamper-resistant; a secure storage unit 350 that is tamper-resistant; a first control sub-unit 230 that writes playback records indicating elapsed playback time of the content into the normal storage unit one by one at regular time intervals; and a second control sub-unit 330 that (i) writes monitoring records with respect to the playback records into the secure storage unit 350 one by one at irregular time intervals and (ii) determines that the playback records stored in the normal storage unit 250 have not been tampered with if a prescribed relation is satisfied between a specific time point obtained according to a latest one of the monitoring records and one of the playback records corresponding to the specific time point.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: May 21, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoyuki Haga, Yoshikatsu Ito, Yuichi Futa, Hideki Matsushima, Takayuki Ito
  • Patent number: 8418256
    Abstract: A data storage apparatus is provided that realizes a measure against deterioration of a flash memory in which integrity check data is stored. A content playback apparatus (1000) uses a hash value of playback history information as integrity check data (confirmation data) for confirming whether the playback history information has been falsified. A first address calculation unit (1004) and a second address calculation unit (1006) determine a read-in address and a storage destination address for the integrity check data, with use of the hash value. Accordingly, the storage destination addresses can be diffused, thus enabling preventing deterioration of the flash memory.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: April 9, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuichi Futa, Tomoyuki Haga, Takayuki Ito, Hideki Matsushima, Yoshikatsu Ito
  • Patent number: 8347091
    Abstract: An authenticator apparatus which makes it difficult for an unauthorized user to masquerade and enhances safety includes an authenticating information holding unit (102) previously stores characteristic information indicating an input and output characteristic involving an environment change of an authentic authenticatee apparatus entitled to be authentic, an authenticating information transmitting unit (107) which transmits authenticating information to a portable medium (2), a response information receiving unit (108) which receives response information outputted from the portable medium (2) in response to an input of the authenticating information, an environment selecting unit (105) which identifies an environment of the portable medium (2), and a response information confirming unit (109) which determines whether or not the authenticating information and the response information satisfy the input and output characteristic indicated in the characteristic information stored in the authenticating information
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: January 1, 2013
    Assignee: Panasonic Corporation
    Inventors: Masao Nonaka, Natsume Matsuzaki, Yoshikatsu Ito, Kaoru Yokota, Yuichi Futa, Manabu Maeda
  • Patent number: 8296561
    Abstract: An authentication system verifies an authentic computer program, certifies the authenticity itself, and verifies a certification. The authentication system includes a terminal (e.g., requesting device) and a card (e.g., verifying device). The card stores secret information to be used by the terminal, and an update program for the terminal. The card verifies authenticity of the terminal using information obtained from the terminal. When it judges that the terminal is authentic, the card outputs the secret information to the terminal. When it judges that the terminal is not authentic, the card outputs the update program. The terminal is forced to update the program when it attempts to use the secret information.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: October 23, 2012
    Assignee: Panasonic Corporation
    Inventors: Kouichi Kanemura, Yoshikatsu Ito, Tomoyuki Haga, Hideki Matsushima, Takayuki Ito
  • Patent number: 8189793
    Abstract: A key terminal apparatus includes a crypto-processing LSI that performs predetermined crypto-processing. Unique information identifying the crypto-processing LSI is embedded in the crypto-processing LSI. A predetermined master key corresponding to a predetermined key is embedded in the crypto-processing LSI. The crypto-processing LSI (a) receives an encrypted manufacturer key from the manufacturer key storage unit, (b) decrypts the encrypted manufacturer key using the predetermined master key to generate a manufacturer key, (c) generates a unique manufacturer key identical to the predetermined unique manufacturer key, based on the unique information embedded in the crypto-processing LSI and the generated manufacturer key, and (d) decrypts the received encrypted device key using the generated identical unique manufacturer key to generate a predetermined device key.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: May 29, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshikatsu Ito, Kouichi Kanemura
  • Patent number: 8135963
    Abstract: A program conversion device generates a program by obfuscating an original program, and generates and encrypts conversion parameters for inverse conversion of the obfuscated program. The program conversion device distributes the obfuscated program together with the encrypted conversion parameters. To execute the obfuscated program, a device having a high security level decrypts the encrypted parameters by using a decryption key stored in advance, applies inverse conversion to the obfuscated program by using the decrypted conversion parameters, and executes the program resulting from the inverse conversion. A device having a low security level executes the obfuscated program without any inverse conversion.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: March 13, 2012
    Assignee: Panasonic Corporation
    Inventors: Taichi Sato, Rieko Asai, Yoshikatsu Ito, Kouichi Kanemura, Hideki Matsushima
  • Patent number: 8065498
    Abstract: A content of Copy Once cannot be copied to an external device or the like, even for the purpose of making a backup. This is inconvenient for the user. However, if copying to another device for the purpose of making a backup is permitted, the content may be copied in an unauthorized manner. The present invention provides the hard disk recorder that transmits the content to the backup device, sets an expiration time in the content stored in the hard disk recorder itself, and deletes the content stored in the hard disk recorder itself after the expiration time expires.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: November 22, 2011
    Assignee: Panasonic Corporation
    Inventors: Yoshikatsu Ito, Shunji Harada, Yuko Tsusaka, Soichiro Fujioka, Motoji Ohmori, Toshihisa Nakano
  • Patent number: 8060716
    Abstract: To aim to provide an information processing device capable of improving a processing capability and securely handling programs and data to be protected. According to a system LSI including a plurality of CPUs, when a CPU-1 switches to a protection mode, the CPU-1 and a CPU-2 are reset. While the CPU-1 operates in the protection mode, only the CPU-1 executes a protection program and the CPU-2 is stopped by continuing outputting a reset signal to the CPU-2.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: November 15, 2011
    Assignee: Panasonic Corporation
    Inventors: Takayuki Ito, Manabu Maeda, Yoshikatsu Ito
  • Publication number: 20110202411
    Abstract: A control terminal device 100 stores service applications and advertising applications in a storage unit 111. Each service application corresponds to one or more of the advertising applications. Each service application is also associated with a different one of home appliances 103 to 106. A control unit 112 of the control terminal device 100 causes the display device 101 to display the service applications corresponding to the respective home appliances. The control unit 112 also detects one advertising application corresponding to the service application that the user has focused on and clicked on by operating the remote control, by referring to the content stored in the storage unit 111. Then, the control unit 112 causes the display device 101 to output audio of an audio file corresponding to the detected advertising application.
    Type: Application
    Filed: October 29, 2009
    Publication date: August 18, 2011
    Inventors: Kentaro Nakai, Yoshikatsu Ito
  • Patent number: 7991155
    Abstract: To provide a backup management device that deletes a content so as to be restorable in the future while protecting a copyright of the content, in a case where there exists a backup of the content. In an HD recorder, a first information storage unit stores a content, a second information storage unit stores a backup of the content, a secure storage unit stores a hash value of the content. If receiving an instruction to delete the content so as to be restorable, a control unit deletes the content from the first information storage unit. When the content is played back, an encryption processing unit applies a calculation to the content to generate detection information, and the control unit compares the hash value with the detection information to judge whether the content has been tampered.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: August 2, 2011
    Assignee: Panasonic Corporation
    Inventors: Soichiro Fujioka, Shunji Harada, Yoshikatsu Ito, Yuko Tsusaka, Motoji Ohmori, Toshihisa Nakano
  • Patent number: 7974926
    Abstract: Provided is a new system for content use and settlement. A user requests a mobile telephone charge management server (3000) to perform proxy settlement for goods purchased using mobile telephones 1 (4100), 2 (4200) and 3 (4300). The mobile telephone charge management server (3000) makes an inquiry to a registration server (3100) as to whether or not proxy settlement is possible. When proxy settlement is not possible, the mobile telephone performs settlement using electronic money that has been deposited therein.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: July 5, 2011
    Assignee: Panasonic Corporation
    Inventors: Motoji Ohmori, Masaya Miyazaki, Toshihisa Nakano, Yoshikatsu Ito, Masaya Yamamoto, Osamu Sasaki, Shunji Harada
  • Patent number: 7962746
    Abstract: A mobile telephone includes a CPU that obtains and decodes instructions included in an OS, a nonsecure program, a switch device driver, and a secure program, and operates according to the decoding results. A memory includes a controlled area and an uncontrollable area. The OS has only the controlled area as its access space, and includes an instruction for mediating access of the nonsecure program to the controlled area and an instruction for instructing the switch device driver to make a switch to the secure program. The nonsecure program includes an instruction to access the controlled area via the OS. The switch device driver includes an instruction to make a switch from execution of the OS to execution of the secure program in response to an instruction of the OS. The secure program has only the uncontrollable area as its access space, and includes an instruction to access the uncontrollable area.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: June 14, 2011
    Assignee: Panasonic Corporation
    Inventors: Tomoyuki Haga, Hiroshi Okuyama, Hideki Matsushima, Yoshikatsu Ito, Shigehiko Kimura, Yasuki Oiwa, Takafumi Kagawa
  • Publication number: 20110126284
    Abstract: A content playback device of the present invention includes a playback unit 200 operable to play back a content; a normal storage unit 250 that is not tamper-resistant; a secure storage unit 350 that is tamper-resistant; a first control sub-unit 230 that writes playback records indicating elapsed playback time of the content into the normal storage unit one by one at regular time intervals; and a second control sub-unit 330 that (i) writes monitoring records with respect to the playback records into the secure storage unit 350 one by one at irregular time intervals and (ii) determines that the playback records stored in the normal storage unit 250 have not been tampered with if a prescribed relation is satisfied between a specific time point obtained according to a latest one of the monitoring records and one of the playback records corresponding to the specific time point.
    Type: Application
    Filed: March 12, 2009
    Publication date: May 26, 2011
    Inventors: Tomoyuki Haga, Yoshikatsu Ito, Yuichi Futa, Hideki Matsushima, Takayuki Ito
  • Patent number: 7934256
    Abstract: The present invention offers an electronic device that reduces the amount of data for communication required when files pertaining to software are to be updated, as compared to the conventional devices, and performs tamper detection. The present invention is an electronic device having an application file pertaining to an operation of application software and updating the application file via a network. The electronic device (i) stores therein the application file including one or more data pieces, (ii) receives, from an external apparatus via the network, update data and location information indicating a location, within the application file, which is for rewrite with the update data, (iii) rewrites only part of the application file by writing over a data piece present at the indicated location with the update data, to update the application file, and (iv) examines whether the updated application file has been tampered with.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: April 26, 2011
    Assignee: Panasonic Corporation
    Inventors: Hideki Matsushima, Takafumi Kagawa, Tomoyuki Haga, Hiroshi Okuyama, Shigehiko Kimura, Yasuki Oiwa, Yoshikatsu Ito
  • Patent number: 7889863
    Abstract: A recording/playback apparatus is capable of using pre-image-converted content in a case of transferring an image-converted content to another device, then back from transfer-destination device to the recording/playback apparatus. The recording/playback apparatus includes a storage unit that stores a first encrypted content generated by encrypting the content, a second encrypted content generated by performing an irreversible compression to convert the content, thereby obtaining a converted content, and by encrypting the converted content, and a content key for decryption of the first and second encrypted contents, a key transfer unit that writes the content key to the external recording medium, and erases the content key stored in the storage unit, and a content transfer unit that, after the content key has been erased, writes the second encrypted content to the external recording medium, and erases the second encrypted content from the storage unit.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 15, 2011
    Assignee: Panasonic Corporation
    Inventors: Shunji Harada, Yoshikatsu Ito, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori, Jun Takahashi