Patents by Inventor Kazuya Iwata

Kazuya Iwata 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).

  • Patent number: 8220432
    Abstract: An internal combustion engine piston includes a piston crown, a thrust-side skirt, an anti-thrust-side skirt, a first apron, and a second apron. The first and second aprons are connected to the thrust-side and anti-thrust-side skirts through connecting sections. Each connecting section has a thickness that gradually increases as followed from a proximal longitudinal end to a distal longitudinal end, wherein the proximal longitudinal end is closer to the piston crown, and the distal longitudinal end is closer to a distal longitudinal end of a corresponding one of the thrust-side and anti-thrust-side skirts.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 17, 2012
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuya Iwata, Seiichi Sue
  • Publication number: 20120148072
    Abstract: An audio signal band expanding apparatus (100a) includes a harmonic generator (3) that receives an input audio signal having a predetermined band and generates, based on the input audio signal, harmonic signals, and an adder (2) that adds the harmonic signals generated by the harmonic generator (3) to the input audio signal. The harmonic generator (3) simulates the input-output characteristics of a predetermined amplifier or that of a device to generate the harmonic signals from the input audio signal.
    Type: Application
    Filed: February 16, 2012
    Publication date: June 14, 2012
    Inventor: Kazuya Iwata
  • Patent number: 8145478
    Abstract: An audio signal band expanding apparatus (100a) includes a harmonic generator (3) that receives an input audio signal having a predetermined band and generates, based on the input audio signal, harmonic signals, and an adder (2) that adds the harmonic signals generated by the harmonic generator (3) to the input audio signal. The harmonic generator (3) simulates the input-output characteristics of a predetermined amplifier or that of a device to generate the harmonic signals from the input audio signal.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventor: Kazuya Iwata
  • Publication number: 20120051565
    Abstract: An audio reproduction apparatus includes: a delay equalizer (301), a delay equalizer (303), a level adjuster (314), and a level adjuster (317). The delay equalizer (301) equalizes an FL signal using an equalizer characteristic EQ9 that converts a characteristic of an audio signal perceived as being reproduced at a position of an FL speaker (104) with respect to a viewing position to be perceived as being reproduced at a position of a virtual speaker (201) with respect to the viewing position. The delay equalizer (303) equalizes the FL signal using an equalizer characteristic (EQ12) that converts a characteristic of an audio signal perceived as being reproduced at a position of an SL speaker (106) with respect to a viewing position to be perceived as being reproduced at a position of the virtual speaker (201) with respect to the viewing position. The level adjuster (314) performs level adjustment, using a first coefficient K9, on an output signal of the delay equalizer (301).
    Type: Application
    Filed: April 30, 2010
    Publication date: March 1, 2012
    Inventor: Kazuya Iwata
  • Publication number: 20110144781
    Abstract: Audio signal processing apparatus includes: an amplitude change extractor 3 which obtains an amplitude change extraction signal which is a signal having an amplitude changing at a fixed quantization width when an amplitude of an input signal temporally changes; a first requantizer 2 which extends, from a first bit count to a second bit count, a bit count representing the amplitude change extraction signal obtained; a second requantizer 5 which smoothes the amplitude change extraction signal by requantizing using a second quantization width less than a first quantization width used on the input signal; a difference signal generator which obtains a difference signal which is a signal represented using the second bit count and obtained by subtracting the amplitude change extraction signal from the input signal; and an adder 6 which generates an output signal by adding a second requantized signal which is the amplitude change extraction signal smoothed by the second requantizer 5 and the difference signal obtaine
    Type: Application
    Filed: September 30, 2010
    Publication date: June 16, 2011
    Inventor: Kazuya IWATA
  • Publication number: 20100229820
    Abstract: An internal combustion engine piston includes a piston crown, a thrust-side skirt, an anti-thrust-side skirt, a first apron, and a second apron. The first and second aprons are connected to the thrust-side and anti-thrust-side skirts through connecting sections. Each connecting section has a thickness that gradually increases as followed from a proximal longitudinal end to a distal longitudinal end, wherein the proximal longitudinal end is closer to the piston crown, and the distal longitudinal end is closer to a distal longitudinal end of a corresponding one of the thrust-side and anti-thrust-side skirts.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuya Iwata, Seiichi Sue
  • Patent number: 7774508
    Abstract: An electronic apparatus that transmits error information about setting of a block size to a host device includes an interface section that transmits and receives a command, a response and data to and from the host device. When the data is a predetermined length or more, the interface section executes multi-block transmission. Moreover, the electronic apparatus includes a data buffer, and a storage section that stores information about a block size. When the interface section receives a block size setting command transmitted from the host device and the block size is larger than a capacity of the data buffer, it transmits a response including error information about incapability of accepting the block size at the time which has a predetermined relation to the block size setting command.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: August 10, 2010
    Assignee: Panasonic Corporation
    Inventors: Seiji Nakamura, Tatsuya Adachi, Kazuya Iwata, Isao Kato
  • Publication number: 20100070058
    Abstract: A signal processing device includes a transformer simulator for simulating transfer characteristic of a transformer which changes in frequency characteristic depending on a load connected to the transformer and processing an input signal with the transfer characteristic to output the processed signal, and a load impedance simulator for simulating impedance characteristic of a predetermined load to output the impedance characteristic. The transformer simulator simulates the transfer characteristic of the transformer to which the load having the load impedance which is simulated by the load impedance simulator is connected.
    Type: Application
    Filed: November 19, 2007
    Publication date: March 18, 2010
    Inventor: Kazuya Iwata
  • Publication number: 20100063824
    Abstract: An audio signal band expanding apparatus (100a) includes a harmonic generator (3) that receives an input audio signal having a predetermined band and generates, based on the input audio signal, harmonic signals, and an adder (2) that adds the harmonic signals generated by the harmonic generator (3) to the input audio signal. The harmonic generator (3) simulates the input-output characteristics of a predetermined amplifier or that of a device to generate the harmonic signals from the input audio signal.
    Type: Application
    Filed: May 12, 2006
    Publication date: March 11, 2010
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Kazuya IWATA
  • Patent number: 7610427
    Abstract: A functional module card and a host apparatus according to the present invention can constitute the digital broadcasting receiver apparatus. The functional module card includes a card controller and a tuner section. The tuner section inputs a digital broadcasting signal, generates a transport stream (referred to as a TS hereinafter) and a TS clock for transferring the TS, and directly transfers the TS and the TS clock to a decoder and descrambler of the host apparatus via a bus according to the TS clock. A data transfer method for transferring data between the card controller and the host controller of the host apparatus is a master-slave data transfer method in which the host controller operates as a master apparatus.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: October 27, 2009
    Assignee: Panasonic Corporation
    Inventors: Seiji Nakamura, Isao Kato, Tatsuya Adachi, Kazuya Iwata
  • Patent number: 7577259
    Abstract: A higher harmonic wave generator generates a higher harmonic wave of an inputted audio signal having a predetermined band based on the inputted audio signal. Next, a multiplier modulates an amplitude of a generated higher harmonic wave of the audio signal according to a band signal having a predetermined bandwidth so as to generate an amplitude-modulated signal. A digital bandpass filter bandpass-filters a generated amplitude-modulated signal using a predetermined bandpass characteristic, and outputs a resultant signal as a band-extended signal. Further, an adder adds a bandpass-filtered amplitude-modulated signal to the inputted audio signal, and outputs an audio signal including a band-extended signal in an audio signal of an original sound and having an addition result.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: August 18, 2009
    Assignee: Panasonic Corporation
    Inventor: Kazuya Iwata
  • Patent number: 7549594
    Abstract: An electronic apparatus includes a controller having an interface part communicating with an external host apparatus and a status register group, and having a plurality of functional units communicating with the host apparatus via the interface part, respectively. The status register group includes operable status registers corresponding to the functional units respectively and indicating whether or not the corresponding functional units are in an operable state, and processing status registers corresponding to the functional units respectively and indicating whether or not the corresponding functional units are in a Function-Being-Processed State. When a command received from the host apparatus is provided for any one of the functional units, the controller transfers the command to the functional unit. In the case of a read command for the status register group, the controller transmits a status of the status register group to the host apparatus as a response.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: June 23, 2009
    Assignee: Panasonic Corporation
    Inventors: Kazuya Iwata, Tatsuya Adachi, Seiji Nakamura
  • Publication number: 20090113592
    Abstract: A shock absorber for sports (ballgames) 10, comprising a glove body 12 and hand insertion 50, having the first sheet-like member 30 covering the center region of the back of one's hand, the second sheet-like member 32 covering the back region of the fingers and the third sheet-like member 34 covering said hand insertion 50 region. Said first sheet-like member 30, the second sheet-like member 32 and the third sheet-like member 34 are made of near-polyurethane gel elastomer, which has high impact absorbency, so that the shock absorber 10 protects any regions of a human body from the impact of, for example, being hit by a pitch, without limiting the movements of a user.
    Type: Application
    Filed: July 11, 2006
    Publication date: May 7, 2009
    Inventors: Kazuya Iwata, Toshiro Yanagida
  • Patent number: 7436898
    Abstract: An integrated circuit (IC) card capable of a high-speed data transmission to/from a data transmission apparatus having low processing capability. A controlling section generates a data packet by adding management information including information regarding a data length of the data packet, and divides the data packet to generate data blocks. The data length of the data block is designated from the data transmission apparatus. When the data blocks which compose the single data packet are sent to the transmission apparatus a communicating section sends an interrupt signal to the data transmission apparatus if the data block including the management information is to be sent, and does not send the interrupt signal to the data transmission apparatus if a data block not including the management information is to be sent.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: October 14, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Isao Kato, Tatsuya Adachi, Kazuya Iwata, Tetsushi Kasahara, Seiji Nakamura
  • Patent number: 7421527
    Abstract: A small-sized and low-cost transmission apparatus and a transmission method (having a high responsivity) capable of transmitting an interrupt signal with a small number of input/output terminals (without a dedicated line for interrupt signals) are provided. A first transmission apparatus of the present invention comprises a central processing unit for carrying out an interrupt process in response to an interrupt signal; an input/output section having at least one data line for transmitting data signals between a second transmission apparatus and the first transmission apparatus and for transmitting an interrupt signal from the second transmission apparatus to the first transmission apparatus; and an interrupt signal detecting section for detecting an interrupt signal from among signals transmitted from the second transmission apparatus via the data line.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: September 2, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiji Nakamura, Tatsuya Adachi, Kazuya Iwata, Tetsushi Kasahara
  • Patent number: 7403139
    Abstract: An electronic apparatus reads a digital data stream including a video signal and/or an audio signal outputted from an external apparatus according to a transmission clock different from a clock for the data stream, and outputs the video signal and/or audio signal without causing any discontinuity. The electronic apparatus includes a sample rate converter that rate-converts a predetermined volume of the audio signal in synchronization with a constant sampling clock, and changes a number of samples to be outputted, based on a data volume of an audio signal outputted by the electronic apparatus and a data volume of an audio signal transmitted from the external apparatus or transmittable from the external apparatus to the electronic apparatus.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: July 22, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shuhei Sasakura, Tatsuya Adachi, Isao Kato, Kazuya Iwata, Naoki Ejima, Seiji Nakamura, Yoshihisa Inagaki
  • Patent number: 7356150
    Abstract: A bandpass filter bandpass-filters an inputted signal X to pass therethrough a partial band of a band of the inputted signal X, and a level correlated white noise generator circuit generates a white noise signal having a level changing according to a level of the inputted signal and correlated to the inputted signal. A signal processing circuit executes a signal processing that includes a predetermined bandpass filtering processing, an echo adding processing, and a level adjustment processing, and that multiplies the inputted white noise signal by a predetermined transfer function, and outputs a processed white noise signal to an adder. The adder adds up the white noise signal from the signal processing circuit and the inputted signal X, and outputs a band-extended signal having an addition result, as an outputted signal.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: April 8, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naoki Ejima, Kazuya Iwata
  • Publication number: 20070177736
    Abstract: A functional module card and a host apparatus according to the present invention can constitute the digital broadcasting receiver apparatus. The functional module card includes a card controller and a tuner section. The tuner section inputs a digital broadcasting signal, generates a transport stream (referred to as a TS hereinafter) and a TS clock for transferring the TS, and directly transfers the TS and the TS clock to a decoder and descrambler of the host apparatus via a bus according to the TS clock. A data transfer method for transferring data between the card controller and the host controller of the host apparatus is a master-slave data transfer method in which the host controller operates as a master apparatus.
    Type: Application
    Filed: May 14, 2004
    Publication date: August 2, 2007
    Inventors: Seiji Nakamura, Isao Kato, Tatsuya Adachi, Kazuya Iwata
  • Publication number: 20070145151
    Abstract: An electronic apparatus that transmits error information about setting of a block size to a host device without making a design of the host device complicated and a control method thereof, are provided. The electronic apparatus of the present invention has: an interface section that transmits/receives a command, a response and data to/from the host device and when the data is a predetermined length or more, executes multi-block transmission; a data buffer; and a storage section that stores information about a block size, wherein when the interface section receives a block size setting command transmitted from the host device and the block size is larger than a capacity of the data buffer, it transmits a response including error information about incapability of accepting the block size at the time which has a predetermined relation to the block size setting command.
    Type: Application
    Filed: November 29, 2004
    Publication date: June 28, 2007
    Inventors: Seiji Nakamura, Tatsuya Adachi, Kazuya Iwata, Isao Kato
  • Publication number: 20070080203
    Abstract: An electronic apparatus includes a controller having an interface part communicating with an external host apparatus and a status register group, and having a plurality of functional units communicating with the host apparatus via the interface part, respectively. The status register group includes operable status registers corresponding to the functional units respectively and indicating whether or not the corresponding functional units are in an operable state, and processing status registers corresponding to the functional units respectively and indicating whether or not the corresponding functional units are in a Function-Being-Processed State. When a command received from the host apparatus is provided for any one of the functional units, the controller transfers the command to the functional unit. In the case of a read command for the status register group, the controller transmits a status of the status register group to the host apparatus as a response.
    Type: Application
    Filed: November 5, 2004
    Publication date: April 12, 2007
    Inventors: Kazuya Iwata, Tatsuya Adachi, Seiji Nakamura