Patents by Inventor Kazuhiko Tanaka
Kazuhiko Tanaka 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: 20100194791Abstract: For the purpose of obtaining a video signal by suppressing a black float while not consuming an excess electric power therein, not contributing to display of a backlight, a video display apparatus having a plural number of backlights for irradiating lights upon a display panel, comprises a histogram detector for conducting a histogram detection for each display region corresponding to that backlight from an input video signal of one (1) frame, a means for determining a control value of that plural number of backlights depending on a specific picture or video, which is detected by the histogram detector, and a video signal processor for controlling an amount of a controlled light the display panel of a display region, i.e., a put-out region, depending on the backlight control value, which is determined by the means for determining the control value of the backlight.Type: ApplicationFiled: December 2, 2009Publication date: August 5, 2010Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Yuya OGI, Yasutaka TSURU, Kazuhiko TANAKA
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Patent number: 7767298Abstract: An electrically conductive composite fiber comprising an electrically conductive layer formed of a polyester-based polymer (A) having a melting point of 200° C. or higher and containing from 23 to 33% by weight of electrically conductive carbon black, and a protective layer formed of a polyester-based polymer (B) having a melting point of 210° C. or higher, wherein the difference between the SP value of the (A) and the SP value of the (B) is adjusted to not greater than a predetermined value and the fiber strength and the elongation at break are adjusted within certain ranges. This can make it possible to obtain an electrically conductive composite fiber that has a superior antistatic performance, which is not degraded very much over a practical wearing for a long term, though it contains only a relatively small amount of electrically conductive carbon black, and that is suitable for the field of clothing such as clean room wears and working wears.Type: GrantFiled: October 13, 2006Date of Patent: August 3, 2010Assignee: Kuraray Co., Ltd.Inventors: Hitoshi Nakatsuka, Tadayoshi Koizumi, Kazuhiko Tanaka, Nobuhiro Koga, Masao Kawamoto, Kenichi Yoshioka
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Publication number: 20100146234Abstract: An external bus interface method including: receiving, via an access control unit, an access request conveyed through an external bus, and judging, via an access judging unit connected to the access control unit, whether the access request is to be honored or rejected, wherein upon receiving the access request, the access control unit sends to the access judging unit an access judging check request signal asking whether the requested address falls within one of access-permitted areas registered in the access judging unit, the access judging unit checks whether the requested address falls within one of the access-permitted areas registered in it and returns to the access control unit, an access judging check result signal indicating whether the access request is to be honored or rejected, and if the access judging check result signal indicates that the access request is to be rejected, the access control unit nullifies the access request.Type: ApplicationFiled: February 16, 2010Publication date: June 10, 2010Inventors: Masakazu EHAMA, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata
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Publication number: 20100045694Abstract: In a local dimming technology for reducing power consumption of a display device using a backlight as in a liquid crystal display, the backlight is configured by a plurality of independently controllable light sources, an image is divided into areas of the same number as that of the controllable light sources and light emission intensity of the light source is calculated based on a feature value of each area. However, this technology has a problem that when a backlight luminance distribution within each area is not uniform, image quality is deteriorated or a power consumption reduction effect is lowered. In the present invention, the image is divided into areas of the number greater than that of the controllable light sources, and the light emission intensity of each light source is determined based on the feature values of a plurality of areas to reduce the above-described problem.Type: ApplicationFiled: June 25, 2009Publication date: February 25, 2010Inventors: Kazuhiko Tanaka, Yasutaka Tsuru, Yuya Ogi
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Patent number: 7664925Abstract: Access control unit sends to the access judging unit an access judging check request signal asking whether the requested address falls within one of the access-permitted areas registered in the access judging unit, the access judging unit checks whether the requested address falls within one of the access-permitted areas registered in it and returns to the access control unit an access judging check result signal indicating whether the access request is to be honored or rejected, and the access control unit permits access to the internal bus if the access judging check result signal indicates that the access request is to be honored, or rejects the access request otherwise.Type: GrantFiled: October 27, 2008Date of Patent: February 16, 2010Assignee: Renesas Technology Corp.Inventors: Masakazu Ehama, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata
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Publication number: 20090318049Abstract: In an electrically conductive sheath-core conjugate fiber including an electrically conductive layer made of a thermoplastic polymer (A) containing electrically conductive carbon black fine particles which constitutes a sheath component and a protective layer made of a fiber-forming thermoplastic polymer (B) which constitutes a core component, the ratio of the (A) to the total weight of the (A) and the (B) is 10 to 35% by weight, the L1/L0 ratio is 1.04 to 10.0 where L1 represents the length of a boundary between the core component and the sheath component in a cross section of the conjugate fiber and L0 represents the length of the circumference of a core component, the fineness, the strength at break and the elongation at break are each adjusted within specified ranges, the shrinkage in hot water at 100° C. is within a specified range, and the fiber surface coverage of the sheath component is 85% or more.Type: ApplicationFiled: June 21, 2007Publication date: December 24, 2009Applicant: Kuraray Co., Ltd.Inventors: Hitoshi Nakatsuka, Tadayoshi Koizumi, Kazuhiko Tanaka, Nobuhiro Koga, Masao Kawamoto, Kenichi Yoshioka
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Publication number: 20090117800Abstract: An electrically conductive composite fiber comprising an electrically conductive layer formed of a polyester-based polymer (A) having a melting point of 200° C. or higher and containing from 23 to 33% by weight of electrically conductive carbon black, and a protective layer formed of a polyester-based polymer (B) having a melting point of 210° C. or higher, wherein the difference between the SP value of the (A) and the SP value of the (B) is adjusted to not greater than a predetermined value and the fiber strength and the elongation at break are adjusted within certain ranges. This can make it possible to obtain an electrically conductive composite fiber that has a superior antistatic performance, which is not degraded very much over a practical wearing for a long term, though it contains only a relatively small amount of electrically conductive carbon black, and that is suitable for the field of clothing such as clean room wears and working wears.Type: ApplicationFiled: October 13, 2006Publication date: May 7, 2009Applicant: KURARAY CO., LTD.Inventors: Hitoshi Nakatsuka, Tadayoshi Koizumi, Kazuhiko Tanaka, Nobuhiro Koga, Masao Kawamoto, Kenichi Yoshioka
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Publication number: 20090063800Abstract: Access control unit sends to the access judging unit an access judging check request signal asking whether the requested address falls within one of the access-permitted areas registered in the access judging unit, the access judging unit checks whether the requested address falls within one of the access-permitted areas registered in it and returns to the access control unit an access judging check result signal indicating whether the access request is to be honored or rejected, and the access control unit permits access to the internal bus if the access judging check result signal indicates that the access request is to be honored, or rejects the access request otherwise.Type: ApplicationFiled: October 27, 2008Publication date: March 5, 2009Inventors: Masakazu EHAMA, Kazuhiko TANAKA, Koji HOSOGI, Hiroaki NAKATA
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Publication number: 20090047516Abstract: Provided is an electrically conductive conjugate fiber formed by conjugating an electrically conductive layer (A) including 60 to 80% by weight of a thermoplastic resin and 20 to 40% by weight of electrically conductive particles and a protective layer (B) including 50 to 95% by weight of polyethylene terephthalate and 5 to 50% by weight of polyethylene-2,6-naphthalate, wherein the fiber has a degree of elongation (DE) of 100 to 350%. This provides an electrically conductive conjugate fiber which exhibits a small change with time in physical properties such as a degree of elongation or boiling water shrinkage during its transportation or storage, while having a certain degree of elongation.Type: ApplicationFiled: March 1, 2007Publication date: February 19, 2009Applicant: KURARAY CO., LTD.Inventors: Tadayoshi Koizumi, Kazuhiko Tanaka, Masao Kawamoto, Hitoshi Nakatsuka, Nobuhiro Koga, Kenichi Yoshioka
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Publication number: 20080289157Abstract: A fabric separable fastener member is provided which comprises a fiber for a base fabric and a fiber for a fastening element firmly anchored by the fused fiber for the base fabric and which is excellent in flexibility and durability without a back-coated layer. The separable fastener member comprises (?1) a ground warp, (?2) a ground weft containing a binder fiber, and (?3) a pile yarn, and the pile yarn (?3) is anchored by the fused binder fiber. In the separable fastener member, each of the ground warp (?1), the ground weft (?2) and the pile yarn (?3) comprises a polyester fiber, the mass ratio of the ground warp (?1) relative to the ground weft (?2) is 40/60 to 80/20, and the mass ratio of the total amount of the ground warp (?1) and the ground weft (?2) relative to the pile yarn (?3) is 90/10 to 50/50.Type: ApplicationFiled: June 9, 2005Publication date: November 27, 2008Applicant: Kuraray Fastening Co., Ltd.Inventors: Yukitoshi Higashinaka, Hitoshi Nakatsuka, Toshiyuki Katsuki, Kazuhiko Tanaka, Hiroshi Itoh
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Publication number: 20080279905Abstract: To provide a fabric and clothing having a low irritation to patients with atopic dermatitis with high productivity. The fabric is produced as a fabric for patients with atopic dermatitis, which is contactable with an affected area of patients with atopic dermatitis and comprises an ethylene-vinyl alcohol (EVOH)-series fiber comprising an ethylene-vinyl alcohol-series copolymer having an ethylene content of 25 to 70% by mole, in which the surface of the EVOH-series fiber is occupied by the ethylene-vinyl alcohol-series copolymer in a proportion of not less than 70%, wherein the hydroxyl group amount of the EVOH-series fiber surface is 20 to 70% by mole, the Young's modulus of the EVOH-series fiber is not more than 60 cN/dtex, and the single fiber fineness of the EVOH-series fiber is not more than 5 dtex.Type: ApplicationFiled: June 27, 2005Publication date: November 13, 2008Applicant: KURARAY CO., LTD.Inventors: Masao Kawamoto, Kazuhiko Tanaka, Shigetoshi Amiya, Mitsutake Aruga
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Patent number: 7444487Abstract: Access control unit sends to the access judging unit an access judging check request signal asking whether the requested address falls within one of the access-permitted areas registered in the access judging unit, the access judging unit checks whether the requested address falls within one of the access-permitted areas registered in it and returns to the access control unit an access judging check result signal indicating whether the access request is to be honored or rejected, and the access control unit permits access to the internal bus if the access judging check result signal indicates that the access request is to be honored, or rejects the access request otherwise.Type: GrantFiled: February 6, 2007Date of Patent: October 28, 2008Assignee: Renesas Technology Corp.Inventors: Masakazu Ehama, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata
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Publication number: 20070136543Abstract: Access control unit sends to the access judging unit an access judging check request signal asking whether the requested address falls within one of the access-permitted areas registered in the access judging unit, the access judging unit checks whether the requested address falls within one of the access-permitted areas registered in it and returns to the access control unit an access judging check result signal indicating whether the access request is to be honored or rejected, and the access control unit permits access to the internal bus if the access judging check result signal indicates that the access request is to be honored, or rejects the access request otherwise.Type: ApplicationFiled: February 6, 2007Publication date: June 14, 2007Inventors: Masakazu Ehama, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata
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Publication number: 20070109875Abstract: A hierarchical-search-based motion vector search, which stores both a non-reduced image and a reduced image in an external memory, has the problem of wasting the external memory capacity and the memory bandwidth. An information processing device according to the present invention exchanges data in a range wider than the memory bus width when a non-reduced image is stored in the external memory and selects whether or not the data is exchanged when the data is read. This allows two types of data, non-reduced and reduced, to be read from the data of the non-reduced image stored in the external memory.Type: ApplicationFiled: October 17, 2006Publication date: May 17, 2007Inventors: Kazuhiko Tanaka, Makoto Kuwata
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Patent number: 7177996Abstract: Security threats are reduced by providing a TLB in a bus interface unit of a media processor whose contents can be updated only from inside the media processor. The TLB checks whether an address specified by an external access request falls within access-permitted areas registered in it. If it does, an access request from outside is passed on to an inside of the media processor; otherwise, it is rejected.Type: GrantFiled: March 17, 2004Date of Patent: February 13, 2007Assignee: Renesas Technology Corp.Inventors: Masakazu Ehama, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata
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Publication number: 20060290783Abstract: A user can select an output desired video test signal of a desired video format for a video test signal generator by fewer operations. There are two modes; format priority mode and test signal priority mode. If the user starts the video test signal selection, lists of video test signals and/or video formats are displayed on a display screen. If the user selects a video test signal name on the screen, the process enters into the test signal priority mode and a list of video formats that have the selected test signal is displayed. The user can select a desired video format to determine the output video test signal of the desired video format. At this time, the user may change the video format as many times as needed without changing the selected video test signal.Type: ApplicationFiled: June 21, 2006Publication date: December 28, 2006Inventors: Shinobu Kubota, Kazuhiko Tanaka
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Publication number: 20060236145Abstract: A contents reproduction device realizes reduction of power consumption by controlling power supply control according to the input contents. More specifically, in the contents reproduction device, the PSI analysis unit analyzes additional information in the inputted contents so as to check whether video contents are contained or the signal detection unit checks whether the inputted contents contain a video signal. According to the check result, the video information detection unit detects whether the inputted contents contain video information and outputs the detection result to the power control unit. When the inputted contents contain video information, the power control unit supplies power to the display. When no video information is contained, the power control unit stops power supply to the display and turns off power supply to the display.Type: ApplicationFiled: August 31, 2005Publication date: October 19, 2006Inventors: Takafumi Yuasa, Yukio Fujii, Kazuhiko Tanaka, Koji Hosogi, Hiroaki Nakata, Masakazu Ehama
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Patent number: 7073256Abstract: In a method of manufacturing a center electrode for a spark plug, a core member is press-fitted into a metal cup and, thereafter, a cold-forging process is performed to form a small-diameter portion at a closed end of the metal cup. The small-diameter portion is completely free from deformation which may occur during press-fitting operation. Thus, the small-diameter portion has excellent accuracy in shape. Furthermore, since the press-fitting is performed before the cold-forging of the small-diameter portion, it is possible to increase the press-fitting load or pressure to the extent that the core member and the metal cup are joined together with a sufficient degree of adhesion which will insure the a center electrode to have good thermal conductivity.Type: GrantFiled: October 21, 2003Date of Patent: July 11, 2006Assignee: Denso CorporationInventors: Hirofumi Muranaka, Kazuhiko Tanaka, Akihiro Endou
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Publication number: 20060053271Abstract: An object of the present invention is to provide a processor that can execute many computations with a small number of instruction codes. As far as multimedia processing is concerned, a plurality of computations of a same type are often executed concurrently and hence a plurality of computing units having a same function are used and mode information for controlling the plurality of units by an instruction unit for one computing unit is prepared in each instruction to execute a plurality of computations with a single instruction.Type: ApplicationFiled: September 1, 2005Publication date: March 9, 2006Inventors: Kiyokazu Nishioka, Kazuhiko Tanaka, Yoshifumi Fujikawa, Toru Nojiri, Keiji Kojima, Koichi Terada, Yoshiki Kurokawa, Koji Hosoki
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Patent number: 6965981Abstract: As far as multimedia processing is concerned, a plurality of computations of a same type are often executed concurrently and hence a plurality of computing units having a same function are used and mode information for controlling the plurality of units by an instruction unit for one computing unit is prepared in each instruction to execute a plurality of computations with a single instruction.Type: GrantFiled: January 24, 2002Date of Patent: November 15, 2005Assignee: Renesas Technology CorporationInventors: Kiyokazu Nishioka, Kazuhiko Tanaka, Yoshifumi Fujikawa, Toru Nojiri, Keiji Kojima, Koichi Terada, Yoshiki Kurokawa, Koji Hosoki