Patents by Inventor Makoto Fujiwara

Makoto Fujiwara 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: 20090167398
    Abstract: A pulse signal delay circuit comprises: a first pulse edge delay circuit for generating a first delay timing signal for sequentially outputting a first edge detection delay timing gained by detecting the rising edge of an input pulse signal and delaying the detection timing by a constant delay time a predetermined number of times; a second pulse edge delay circuit for generating a second delay timing signal for sequentially outputting a second edge detection delay timing gained by detecting the falling edge of the input pulse signal and delaying the detection timing by the delay time the number of times; and a delay pulse signal generating circuit for generating and outputting delay pulse signals rising and falling according to the first and second edge detection delay timings, respectively, from the first and second delay timing signals, the first and second edge detection delay timings delayed the same number of times.
    Type: Application
    Filed: December 15, 2008
    Publication date: July 2, 2009
    Inventors: Yoshihiro OISHI, Makoto Fujiwara
  • Patent number: 7546468
    Abstract: A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program, and the raw program is re-encrypted with an inherent key to newly generate an inherent key-encrypted program, which is stored in an external memory.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: June 9, 2009
    Assignee: Panasonic Corporation
    Inventors: Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito, Yasushi Yamada, Shinji Inoue
  • Patent number: 7545934
    Abstract: To make the strict management of the security information possible, in a security information packaging system 120 which comprises a storing portion 120a for storing first encrypted security information EDK(MK)/address obtained by encrypting final security information DK by using internal security information MK and second encrypted security information EMK(CK)/address obtained by encrypting the internal security information MK by using converted security information CK, and an LSI 120b, the LSI 120b includes a seed generating portion 131 for storing a first constant IDfuse/address containing address information and serving as a generation source of a conversion seed and a second constant IDtst serving as a generation source of a conversion seed for testing and a third constant Const and then outputting either the conversion seed or the conversion seed for testing in response to a test signal.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: June 9, 2009
    Assignee: Panasonic Corporation
    Inventors: Makoto Fujiwara, Yusuke Nemoto
  • Publication number: 20090138728
    Abstract: A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program, and the raw program is re-encrypted with an inherent key to newly generate an inherent key-encrypted program, which is stored in an external memory.
    Type: Application
    Filed: April 23, 2008
    Publication date: May 28, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito, Yasushi Yamada, Shinji Inoue
  • Patent number: 7539312
    Abstract: A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program, and the raw program is re-encrypted with an inherent key to newly generate an inherent key-encrypted program, which is stored in an external memory.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: May 26, 2009
    Assignee: Panasonic Corporation
    Inventors: Makoto Fujiwara, Yusuke Nemoto, Junichi Yasui, Takuji Maeda, Takayuki Ito, Yasushi Yamada, Shinji Inoue
  • Patent number: 7521567
    Abstract: The objectives of this invention are to extend the range of choosing materials to use in the preparation of photopolymerizable compositions by providing a novel organic compound which absorbs a visible light; or to provide an orgamc material which is useful as host compound in organic electroluminescent devices, as well as its uses: The objectives are attainable by providing an aromatic tertiary amine compound bearing within the same molecule one or more specific atomic groups, a luminescent agent directed to use in organic electroluminescent devices comprising it, and an organic electroluminescent device using such amine compound, as well as its uses.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: April 21, 2009
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Makoto Fujiwara, Natsuko Sonoda, Makoto Satsuki, Sadaharu Suga, Hisayoshi Fujikawa, Koji Noda, Yasunori Taga
  • Patent number: 7514158
    Abstract: A method for producing a coumarin compound represented by Formula 1, which comprises a step of reacting a coumarin compound represented by Formula 1 with a compound having an aldehyde group and an activated methylene group; luminous agents for organic EL elements and organic EL elements which all comprise the coumarin compound; and displaying panels and information displaying apparatuses using the organic EL elements: ø(Z)m??Formula 1 wherein in Formula 1, ø is an aromatic ring, heterocycle, or a combination thereof, each Z is the same or a different coumarin group represented by Formula 2; and m is an integer of two or more;
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: April 7, 2009
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Makoto Satsuki, Makoto Fujiwara, Natsuko Ishida, Sadaharu Suga, Hisayoshi Fujikawa, Hisato Takeuchi, Yasunori Taga
  • Publication number: 20090083547
    Abstract: In the case where a target device stores: m keys {Ka1, . . . , Kam} (m is a natural number) in a manner that the Kai (i is a natural number satisfying 1?i?m) is encrypted with the Ka (i?1); and n keys {Kb1, . . . , Kbn} (n is a natural number) in a manner that the Kbj (j is a natural number satisfying 1?j?n) is encrypted with the Kb (j?1), a confidential information processing unit is caused to perform a processing of re-encrypting the encrypted key Enc (Kai, Ka (i?1)), which has been encrypted with the Ka (i?1), by using the Kb (j?1) and outputting as an encrypted key Enc (Kai, Kb (j?1)).
    Type: Application
    Filed: April 25, 2006
    Publication date: March 26, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuya Shimizu, Tomoya Sato, Makoto Fujiwara, Kentaro Shiomi
  • Publication number: 20090037721
    Abstract: An development environment of a high security level is provided for a key-installed system. Development of a program for a system having an LSI device which includes a secure memory is performed by providing another LSI device having the same structure and setting the provided LSI device to a development mode which is different from a product operation mode. Alternatively, the provided LSI device is set to an administrator mode to perform development and encryption of a key-generation program. The LSI device is set to a key-generation mode to execute the encrypted key-generation program, thereby generating various keys.
    Type: Application
    Filed: July 9, 2008
    Publication date: February 5, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Makoto FUJIWARA, Yusuke NEMOTO, Junichi YASUI, Takuji MAEDA, Takayuki ITO, Yasushi YAMADA, Shinji INOUE
  • Publication number: 20090008716
    Abstract: A semiconductor device according to an embodiment includes: a fin type MOSFET having a first gate electrode, and a first gate insulating film for generating Fermi level pinning in the first gate electrode; and a planar type MOSFET having a second gate electrode, and a second gate insulating film for generating no Fermi level pinning in the second gate electrode, or generating Fermi level pinning weaker than that generated in the first gate electrode in the second gate electrode.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 8, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masakazu GOTO, Makoto Fujiwara
  • Publication number: 20090013183
    Abstract: In order to maintain the confidentiality of information at a high level even in cases where a confidential information processor in which multiple types of decryption sequences are applicable is used, decryption is performed according to the value of content decryption information 304. If the value of the content decryption information 304 is “0”, an encrypted content key 309 is decrypted with a selected authentication intermediate key 312 and encrypted contents 310 are decrypted with a content key 305. On the other hand, if the value of the content decryption information 304 is other than “0”, the selected authentication intermediate key 312 is converted by performing an arithmetic operation using that value, thereby generating a conversion intermediate key 315. An encrypted domain key 316 is decrypted with the conversion intermediate key 315, the encrypted content key 309 is decrypted with a domain key 306, and then the encrypted contents 310 are decrypted with a content key 305.
    Type: Application
    Filed: September 21, 2005
    Publication date: January 8, 2009
    Inventors: Tomoya Sato, Makoto Fujiwara
  • Patent number: 7467509
    Abstract: In a seal chain, a seal mechanism disposed between opposed surfaces of inner and outer link plates comprises an elastic ring, a seal ring adhered to the outer link plate, an annular resin seal having a base adhered to the inner link plate, a tongue on the annular resin seal in abutting relationship with the outer link plate, and a ring-shaped plate adhered to the outer link plate. The elastic ring is held between an inclined surface formed on an end of a bushing that protrudes past the inner link plate, and an inclined inner surface of the seal ring. The inner circumferential surface of base of the annular resin seal slides on the outer circumferential surface of the seal ring.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: December 23, 2008
    Assignee: Tsubakimoto Chain Co.
    Inventors: Kentaro Yamane, Makoto Fujiwara
  • Patent number: 7459047
    Abstract: A flexible metal foil/polyimide laminate is prepared by applying a polyamic acid varnish onto a very thin copper foil on a carrier, semi-drying the varnish, laminating a polyimide film to the varnish-coated copper foil using a hot roll press, and heat treating the laminate for solvent removal and imidization in an atmosphere having a controlled oxygen concentration. A polyimide adhesive layer resulting from the imidization of polyamic acid has a thickness of up to 6 ?m, the sum of the thicknesses of the polyimide film and the polyimide adhesive layer is up to 25 ?m. The polyimide adhesive layer has a Tg>400° C.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: December 2, 2008
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro Usuki, Makoto Fujiwara, Shigehiro Hoshida, Michio Aizawa, Tadashi Amano
  • Patent number: 7457891
    Abstract: A DMA controller is connected by a bus to a plurality of master devices and a plurality of slave devices, and performs a data transfer between slave devices which are specified as a source and a destination of the data transfer by a transfer condition received from any of the plurality of master devices. Each of the plurality of master devices and the plurality of slave devices has a rank used for judging data transfer permissibility. The DMA controller enables the data transfer if the data transfer is judged to be permitted as a result of a comparison between a rank of the master device and a rank of any of the specified slave devices, and disables the data transfer if the data transfer is judged to be prohibited.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: November 25, 2008
    Assignee: Panasonic Corporation
    Inventors: Yuishi Torisaki, Makoto Fujiwara, Yusuke Nemoto
  • Patent number: 7456481
    Abstract: A semiconductor device includes a first device region including a plurality of source regions and a plurality of drain regions of first conductivity type transistors, a plurality of loop-shaped gate electrode regions of the first conductivity type transistors, a second device region including a plurality of source regions and a plurality of drain regions of a second conductivity type transistors, a plurality of loop-shaped gate electrode regions of the second conductivity type transistors, a first wiring configured to supply a first voltage to at least one of the source regions of the first device region, a second wiring configured to supply a second voltage to at least one of the source regions of the second device region, and a third wiring electrically coupled to the drain regions of the first and second device regions and to the gate electrode regions of the first and the second conductivity type transistors.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: November 25, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Inaba, Makoto Fujiwara
  • Publication number: 20080260376
    Abstract: To provide an aperture mechanism and an optical apparatus which are reduced in size. The aperture mechanism comprising: a driving member to be driven in accordance with an aperture operation; an aperture member having an aperture to be driven by the driving member; a first engagement section connected to one of the driving member and the aperture member; a second engagement section connected to another one of the driving member and the aperture member and engaged with the first engagement section; and a biasing member connected to at least one of the driving member and the aperture member to provide a bias in a direction in which the first engagement section and the second engagement section are facing to each other.
    Type: Application
    Filed: December 20, 2007
    Publication date: October 23, 2008
    Applicant: NIKON CORPORATION
    Inventors: Koushi YOSHIBE, Makoto Fujiwara
  • Patent number: 7432985
    Abstract: Pixels in a window, which corresponds to the position of an input pixel and has a predetermined size, are extracted from a reduced image obtained by reducing an input image to a predetermined scale. Substitute data used to substitute the value of the input pixel is generated based on the extracted pixels in the window. The difference value between the substitute data and input pixel value is calculated and is compared with a first threshold value. When the difference value is smaller than the first threshold value, the input pixel value is substituted by the substitute data. Thus, low-frequency noise reduction can be attained using a minimum required memory size while suppressing adverse effects such as a resolution drop and the like.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 7, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisashi Ishikawa, Makoto Fujiwara, Masao Kato, Tetsuya Suwa, Fumitaka Goto, Kazuya Imafuku
  • Publication number: 20080234086
    Abstract: A cylindrical roller-incorporated roller chain, which can reduce wear of the side plates and also can reduce radial wear. A roller chain for a conveyor in which a plurality of cylindrical rollers are composed of either a casehardened steel cylindrical roller 4 or an oil-impregnated sintered alloy cylindrical roller 5. The casehardened steel cylindrical rollers 4 and the oil-impregnated sintered alloy cylindrical rollers 5 are alternately disposed in a circumferential direction. A pair of side plates 6, 6 are each composed of an oil-impregnated sintered alloy having a collar portion 6a and a cylindrical portion 6b. One axial end surface of each collar portion 6a abuts on an end surface of the hollow roller 3 (having no collar), and each cylindrical portion 6b is fitted between the inner circumferential surface of the roller 3 and the outer circumferential surface of the bushing 2.
    Type: Application
    Filed: January 17, 2008
    Publication date: September 25, 2008
    Inventors: Makoto FUJIWARA, Ryutaro Nakamura
  • Publication number: 20080212770
    Abstract: A domain key is used to perform chaining decryption with respect to encrypted content key information (ST203-1), and first data is extracted (ST203-2). The extracted first data is compared with partial-check data (ST203-4). The first data as it is encrypted is extracted from the m pieces of encrypted content key information (ST203-6), and a predetermined operation is executed with respect to concatenated data including m extracted check values to generate second data (ST203-8). The second data is compared with whole-check data included in domain key information (ST203-11). If the first data matches the partial-check data (ST203-5) and the second data matches the whole-check data (ST203-12), it is determined that there is not tampering.
    Type: Application
    Filed: December 20, 2005
    Publication date: September 4, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tomoya Satou, Makoto Fujiwara, Kentaro Shiomi, Yusuke Nemoto, Yuishi Torisaki, Kazuya Shimizu, Shinji Inoue, Kazuya Fujimura, Makoto Ochi
  • Patent number: 7419727
    Abstract: This invention has an objective to improve durability at elevated temperature in organic electroluminescent devices using coumarin derivatives as dopant in a luminescent layer. This invention attains the above objective by providing in the organic electroluminescent devices formed by laminating an anode, a hole injection layer, a hole transportation layer, a luminescent layer, an electron transportation layer and a cathode in this order, the luminescent layer which comprises as dopant the green light-emitting coumarin derivative and hole- and electron-transporting substances as host; said coumarin derivative consisting of a plurality of coumarin groups bound to an aromatic ring, heterocycle, or any combination thereof, and exhibiting a glass transition point of 150° C. or higher or a melting point of 297° C. or higher.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: September 2, 2008
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Kazushige Kojima, Kojiro Tachi, Hisayoshi Fujikawa, Koji Noda, Masahiko Ishii, Yasunori Taga, Makoto Satsuki, Makoto Fujiwara, Natsuko Ishida, Sadaharu Suga