Patents by Inventor Takashi Kumagai

Takashi Kumagai 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: 7411804
    Abstract: An integrated circuit device, including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include at least one memory block MB which stores image data, and at least one data driver block DB which drives data lines; and the memory block MB includes a memory cell array, a row address decoder RD, and a sense amplifier block SAB.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: August 12, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Patent number: 7391668
    Abstract: An integrated circuit device, a first direction being a direction extending from a first side which is a shorter side of the integrated circuit device to a third side opposed to the first side, a second direction being a direction extending from a second side which is a longer side of the integrated circuit device to a fourth side opposed to the second side, includes: a first to a Nth circuit blocks (N is an integer more than 2) arranged in the first direction. One of the first to the Nth circuit blocks is a programmable ROM block in which at least a part of data programmed is stored by a user; the programmable ROM block includes a plurality of word lines, a plurality of bit lines, and a plurality of memory cells connected to the plurality of word lines and the plurality of bit lines; and the plurality of word lines extend in the second direction.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: June 24, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Kanji Natori, Kimihiro Maemura, Takashi Kumagai
  • Patent number: 7388803
    Abstract: An integrated circuit device includes: a RAM block including a plurality of wordlines, a plurality of bitlines, a plurality of memory cells, and a wordline control circuit; and a data line driver block which drives a plurality of data line groups of a display panel based on data supplied from the RAM block. The data line driver block includes first to Nth (N is an integer larger than one) divided data line driver blocks, each of the first to Nth divided data line driver blocks driving a different data line group of the data line groups. The wordline control circuit drives an identical wordline N times from among the wordlines in one horizontal scan period of the display panel. The first to Nth divided data line drivers are disposed along a first direction in which the bitlines extend.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: June 17, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito
  • Publication number: 20080112254
    Abstract: An integrated circuit device includes: a RAM block including a plurality of wordlines, a plurality of bitlines, a plurality of memory cells, and a wordline control circuit; and a data line driver block which drives a plurality of data line groups of a display panel based on data supplied from the RAM block. The data line driver block includes first to Nth (N is an integer larger than one) divided data line driver blocks, each of the first to Nth divided data line driver blocks driving a different data line group of the data line groups. The wordline control circuit drives an identical wordline N times from among the wordlines in one horizontal scan period of the display panel. The first to Nth divided data line drivers are disposed along a first direction in which the bitlines extend.
    Type: Application
    Filed: December 18, 2007
    Publication date: May 15, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito
  • Patent number: 7263513
    Abstract: A communication system includes a first storage section for storing a plurality of pieces of contents information, a second storage section for storing a plurality of pieces of contents information, a control section for accessing the contents information stored in the first storage section and the second storage section based on a single set of management information for managing the contents information stored in the first storage section and the second storage section, a communication section for interconnecting the first storage section, the second storage section and the control section for communication, and an accounting setting section for setting an amount of money to be imposed on a predetermined user in response to use of the first storage section or the second storage section.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: August 28, 2007
    Assignee: Sony Corporation
    Inventors: Takashi Kumagai, Izuru Tanaka
  • Publication number: 20070057894
    Abstract: An integrated circuit device, a first direction being a direction extending from a first side which is a shorter side of the integrated circuit device to a third side opposed to the first side, a second direction being a direction extending from a second side which is a longer side of the integrated circuit device to a fourth side opposed to the second side, includes: a first to a Nth circuit blocks (N is an integer more than 2) arranged in the first direction. One of the first to the Nth circuit blocks is a programmable ROM block in which at least a part of data programmed is stored by a user; the programmable ROM block includes a plurality of word lines, a plurality of bit lines, and a plurality of memory cells connected to the plurality of word lines and the plurality of bit lines; and the plurality of word lines extend in the second direction.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 15, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Kanji Natori, Kimihiro Maemura, Takashi Kumagai
  • Publication number: 20070057896
    Abstract: An integrated circuit device includes first to Nth circuit blocks (N is an integer of two or more) disposed along the long side of the integrated circuit device. One circuit block of the first to Nth circuit blocks is a logic circuit block, and another circuit block of the first to Nth circuit blocks is a programmable ROM of which at least part of data stored therein can be programmed by a user. The logic circuit block and the programmable ROM block are adjacently disposed along a first direction. At least part of information stored in the programmable ROM block is supplied to the logic circuit block.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 15, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kanji Natori, Takashi Kumagai
  • Publication number: 20070013634
    Abstract: An integrated circuit device includes at least one data driver block for driving data lines, a plurality of control transistors TC1 and TC2, each of the control transistors being provided corresponding to each output line of the data driver block and controlled. by using a common control signal, and a pad arrangement region in which data driver pads P1 and P2 for electrically connecting the data lines and the output lines QL1 and QL2 of the data driver block are disposed. The control transistors TC1 and TC2 are disposed in the pad arrangement region.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takayuki Saiki, Satoru Ito, Masahiko Moriguchi, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Kazuhiro Maekawa
  • Publication number: 20070013687
    Abstract: An integrated circuit device includes a display memory and a data read control circuit. The data read control circuit controls data reading so that data of pixels corresponding to a plurality of signal lines is read out by N-time reading in one horizontal scan period of a display panel (N is an integer larger than 1). The display memory includes a plurality of sense amplifier cells respectively connected with a plurality of bitlines. L sense amplifier cells (L is an integer larger than 1) respectively connected with the bitlines of L memory cells adjacent in a first direction (wordline direction) in which wordlines extend are disposed along a second direction (bitline direction) in which the bitlines extend.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa
  • Publication number: 20070016700
    Abstract: An integrated circuit device has a data memory including a memory cell array which includes a plurality of wordlines, a plurality of bitlines, and a plurality of memory cells, and a memory output circuit. The data read order in the memory cell array corresponding to the arrangement of the bitlines differs from the data output order from the memory output circuit. The integrated circuit device includes a rearrangement interconnect region in a region of the memory output circuit. The rearrangement interconnect region rearranges data input in the data read order using interconnects and outputs the data in the data output order.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Takashi Kumagai, Satoru Ito, Junichi Karasawa, Shuji Kawaguchi
  • Publication number: 20070013685
    Abstract: An integrated circuit device having a display memory, wherein a plurality of first power supply interconnects VSSL for supplying a first power supply voltage VSS to memory cells MC are formed in a metal interconnect layer in which a plurality of wordlines WL are formed; and wherein a plurality of second power supply interconnects VDDL for supplying a second power supply voltage VDD to the memory cells are formed in another metal interconnect layer in which a plurality of bitlines BL are formed, the second power supply voltage VDD being higher than the first power supply voltage VSS. A plurality of bitline protection interconnects SHD are formed in a layer above the bitlines BL, and each of the bitline protection interconnects SHD at least partially covers one of the bitlines BL in a plan view.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 18, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa
  • Publication number: 20070013706
    Abstract: Each of RAM blocks provided in a display memory and disposed along a first direction in which bitlines extend includes a sense amplifier circuit which outputs M-bit data upon one wordline selection (M is an integer larger than 1). At least M memory cells are arranged in each of the RAM blocks along a second direction in which wordlines extend. M sense amplifier cells to which M-bit data read from the M memory cells is input are provided in the sense amplifier circuit. L sense amplifier cells of the M sense amplifier cells are disposed at a position corresponding to L memory cells adjacent in the second direction (L is an integer which satisfies 2?L<M/2). When the height of the memory cell in the second direction is denoted by MCY and the height of the sense amplifier cell in the second direction is denoted by SACY, “(L?1)×MCY<SACY?L×MCY” is satisfied.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa
  • Publication number: 20070013684
    Abstract: An integrated circuit device has a display memory which stores data for at least one frame displayed in a display panel which has a plurality of scan lines and a plurality of data lines, the display memory includes a plurality of RAM blocks, each of the RAM blocks including a plurality of wordlines, a plurality of bitlines, a plurality of memory cells, and a wordline control circuit, each of the RAM blocks is disposed along a first direction in which the bitlines extend, each of the memory cells has a short side and a long side, the bitlines are formed along a direction in which the long side of the memory cell extends, and the wordlines are formed along a direction in which the short side of the memory cell extends.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 18, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito
  • Publication number: 20070013074
    Abstract: An integrated circuit device having a display memory, wherein a plurality of first power supply interconnects for supplying a first power supply voltage to a plurality of memory cells are provided in a metal interconnect layer in which a plurality of bitlines are formed; wherein a second power supply interconnect for supplying a second power supply voltage to the memory cells is provided in a metal interconnect layer in which a plurality of wordlines are formed, the second power supply voltage being higher than the first power supply voltage; wherein a plurality of bitline protection interconnects are formed in a layer above the bitlines, each of the bitline protection interconnects at least partially covering one of the bitlines in a plan view; and wherein a third power supply interconnect for supplying a third power supply voltage to circuits of the integrated circuit device other than the display memory is provided in a layer above the bitline protection interconnects, the third power supply voltage being
    Type: Application
    Filed: November 10, 2005
    Publication date: January 18, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa
  • Publication number: 20070013635
    Abstract: An integrated circuit device includes a data driver block DB, a memory block MB, and a logic circuit block LB. The data driver block DB includes a data driver DR and a buffer circuit BF which buffers a driver control signal from the logic circuit block LB and outputs the buffered driver control signal to the data driver DR. The memory block MB includes a memory cell array MA and a row address decoder RD which selects a wordline. The data driver block DB and the memory block MB are disposed along a direction D1, the buffer circuit BF and the data driver DR are disposed along a direction D2, the row address decoder RD and the memory cell array MA are disposed along the direction D2, and the buffer circuit BF and the row address decoder RD are disposed along the direction D1.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
  • Publication number: 20070013707
    Abstract: In an integrated circuit device, a data line driver block which drives data lines of a display panel based on data supplied from a RAM block from which data is read N times (N is an integer larger than one) in one horizontal scan period 1H of the display panel includes first to N-th divided data line driver blocks disposed along a first direction in which bitlines extend. When data supplied from the RAM block is M bits (M is an integer larger than 1) and grayscale of a pixel corresponding to the data line is G bits, each of the first to N-th divided data line driver blocks includes (M/G) (multiple of three) data line driver cells which drive (M/G) data lines. (M/3G) R data line driver cells are provided in a first subdivided driver, (M/3G) G data line driver cells are provided in a second subdivided driver, and (M/3G) B data line driver cells are provided in a third subdivided driver.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 18, 2007
    Applicant: Seiko Epson Corporation
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa
  • Publication number: 20070002063
    Abstract: An integrated circuit device including first to Nth circuit blocks CB1 to CBN disposed along a first direction D1, when the first direction D1 is a direction from a first side of the integrated circuit device toward a third side which is opposite to the first side, the first side being a short side, and when a second direction D2 is a direction from a second side of the integrated circuit device toward a fourth side which is opposite to the second side, the second side being a long side. The circuit blocks CB1 to CBN include at least one memory block MB which stores image data, and at least one data driver block DB which drives data lines. The memory block MB and the data driver block DB are disposed adjacent to each other along the first direction D1.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 4, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Katsuhiko Maki
  • Publication number: 20070001969
    Abstract: An integrated circuit device has a display memory which stores data for at least one frame displayed in a display panel which has a plurality of scan lines and a plurality of data lines. The display memory includes a plurality of RAM blocks, each of the RAM blocks including a plurality of wordlines WL, a plurality of bitlines BL, a plurality of memory cells MC, and a data read control circuit. Each of the RAM blocks is disposed along a first direction X in which the bitlines BL extend.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 4, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito
  • Publication number: 20070001971
    Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN disposed along a direction D1, a first interface region provided on the D2 side of the circuit blocks CB1 to CBN, and a second interface region provided on the D4 side of the circuit blocks CB1 to CBN. The circuit blocks CB1 to CBN include a data driver block DB and a circuit block other than the data driver block DB. When the widths of the first interface region, the circuit blocks CB1 to CBN, and the second interface region in the direction D2 are respectively W1, WB, and W2, the integrated circuit device has a width W in the direction D2 of “W1+WB+W2?W<W1+2×WB+W2”.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 4, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira
  • Publication number: 20070001968
    Abstract: A display device comprising: a display panel including a plurality of scan lines and a plurality of data lines; and an integrated circuit device including a display memory which stores data for at least one frame displayed in the display panel. The display memory (or RAM block) includes a plurality of wordlines, a plurality of bitlines, and a plurality of memory cells. The integrated circuit device has a side parallel to the scan lines of the display panel, and the bitlines of the display memory extend in a first direction parallel to the side.
    Type: Application
    Filed: November 10, 2005
    Publication date: January 4, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru Kodaira, Noboru Itomi, Shuji Kawaguchi, Takashi Kumagai, Junichi Karasawa, Satoru Ito