Patents by Inventor Makoto Takamatsu

Makoto Takamatsu 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: 20220276732
    Abstract: A sensor device 1A includes: an insulating substrate 11; a touch sensor TS that includes a sensor electrode 12 disposed on a first surface 15a disposed on an operation surface side; a shield electrode 131 disposed on the first surface 15a; and a detecting electrode 14 facing the shield electrode 131 and disposed on a second surface 15b different from the first surface 15a. The first surface 15a is located closer to the operation surface than the second surface 15b, the shield electrode 131 and the detecting electrode 14 constitute a pressure-sensitive sensor that detects a change in capacitance value caused by approaching of the shield electrode 131 and the detecting electrode 14, and the shield electrode 131 blocks capacitive coupling between an operator FIN and the detecting electrode 14 caused by approaching of the operator FIN to the operation surface.
    Type: Application
    Filed: August 28, 2019
    Publication date: September 1, 2022
    Applicant: Fujikura Ltd.
    Inventors: Eriko Hayashi, Makoto Takamatsu, Yasuyuki Tachikawa, Takashi Kameshima
  • Patent number: 10126185
    Abstract: An input device 1 comprises a sensor circuit 91 which includes a pressure-sensitive sensor 50 and a first fixed resistor 914 which is electrically connected in series to the pressure-sensitive sensor 50. A resistance value Rf of the first fixed resistor 914 satisfies the following expression (1). In the expression (1), RsHL is a resistance value of the pressure-sensitive sensor 50 when ½ of the maximum working load of the pressure-sensitive sensor 50 is applied, and Co is a resistance correction coefficient within the range of 1/16 to 1/1.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: November 13, 2018
    Assignee: FUJIKURA LTD.
    Inventors: Toshiaki Watanabe, Makoto Takamatsu, Osamu Aoki, Yasuyuki Tachikawa
  • Patent number: 9882561
    Abstract: An input device includes an insulation substrate, a switch element, and a detection portion. The switch element includes a fixed electrode portion that is provided on the substrate, and a movable electrode portion that is provided on a main surface side of the substrate, at least part of the movable electrode portion being elastically displaceable toward a direction approaching and leaving the fixed electrode portion. The movable electrode portion is displaceable toward a direction approaching the fixed electrode portion due to pressure from an object to be detected that is an electric conductor. The detection portion is capable of detecting a capacitance change caused by the object to be detected approaching and leaving the movable electrode portion and a capacitance change between the movable electrode portion and the fixed electrode portion produced by displacement of the movable electrode portion due to pressing.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: January 30, 2018
    Assignee: FUJIKURA LTD.
    Inventors: Yohei Kurikawa, Wataru Kondo, Makoto Takamatsu, Yoshinori Sano, Toshimizu Tomitsuka, Yasushi Ono, Osamu Aoki, Shinsuke Aoshima, Yasuyuki Tachikawa
  • Publication number: 20170024049
    Abstract: An input device 1 includes a panel unit 10, a pressure-sensitive sensor 60 which detects a pressing force applied through the panel unit 10, a seal member 70 which is disposed outside the pressure-sensitive sensors 60, and a support member 80 which supports the panel unit 10 through the pressure-sensitive sensors 60 and the seal member 70. The thickness of the pressure-sensitive sensors 60 is relatively thinner than the thickness of the seal member 70, a space which is formed between the panel unit 10 and the support member 80 includes a first part S1 where the pressure-sensitive sensors 60 are arranged and the second part S2 where the seal member 70 is arranged, and the distance of the first part S1 is relatively narrower than the distance of the second part S2.
    Type: Application
    Filed: November 27, 2014
    Publication date: January 26, 2017
    Applicant: FUJIKURA LTD.
    Inventors: Yasuyuki TACHIKAWA, Toshimizu TOMITSUKA, Makoto TAKAMATSU, Osamu AOKI, Toshiaki WATANABE
  • Publication number: 20160328067
    Abstract: An electronic apparatus 1 includes a touch panel 30, a panel unit 10 which includes at least a cover member 20, at least one pressure-sensitive sensor 50 which detects a pressing force applied through the panel unit 10, a touch panel controller 81 which generates a data group (X, Y, ?) which includes touch coordinate values detected by the touch panel 30 and another value except the touch coordinate values, a sensor controller 91 which generates a pressure value Pn from an output value OPn of the pressure-sensitive sensor 50, and a computer 100 which includes at least a touch panel driver 103 and to which the touch panel controller 81 and the sensor controller 91 are electrically connected. The computer 100 further includes a touch panel filter driver 105 which rewrites the other value of the data group (X, Y, ?) to the pressure value Pn.
    Type: Application
    Filed: December 25, 2014
    Publication date: November 10, 2016
    Applicant: FUJIKURA LTD.
    Inventors: Osamu AOKI, Makoto TAKAMATSU, Toshiaki WATANABE, Yasuyuki TACHIKAWA
  • Publication number: 20160327440
    Abstract: An input device 1 comprises a sensor circuit 91 which includes a pressure-sensitive sensor 50 and a first fixed resistor 914 which is electrically connected in series to the pressure-sensitive sensor 50. A resistance value Rf of the first fixed resistor 914 satisfies the following expression (1). In the expression (1), RsHL is a resistance value of the pressure-sensitive sensor 50 when ½ of the maximum working load of the pressure-sensitive sensor 50 is applied, and Co is a resistance correction coefficient within the range of 1/16 to 1/1.
    Type: Application
    Filed: October 17, 2014
    Publication date: November 10, 2016
    Applicant: FUJIKURA LTD.
    Inventors: Toshiaki WATANABE, Makoto TAKAMATSU, Osamu AOKI, Yasuyuki TACHIKAWA
  • Publication number: 20160320914
    Abstract: An input device 1 includes a pressure-sensitive sensor 50 and a sensor controller 90. The sensor controller 90 includes an acquisition part 91 which obtains an actual output value of the pressure-sensitive sensor 50, a storage part 92 in which a correction function g(Vout) is stored, and a correction part 93 which substitutes the actual output value into the correction function g(Vout) so as to correct the actual output value for linearizing output characteristics of the pressure-sensitive sensor 50. The correction function g(Vout) is a function which is obtained by replacing an output variable Vout of the pressure-sensitive sensor 50 with a corrected output variable Vout? of the pressure-sensitive sensor 50 and also replacing an applied-load variable F to the pressure-sensitive sensor 50 with the output variable Vout in an inverse function f?1(F) of the output characteristic function f(F) of the pressure-sensitive sensor 50.
    Type: Application
    Filed: December 25, 2014
    Publication date: November 3, 2016
    Applicant: FUJIKURA LTD.
    Inventors: Yasuyuki TACHIKAWA, Makoto TAKAMATSU, Osamu AOKI, Toshiaki WATANABE
  • Publication number: 20160224168
    Abstract: An electronic apparatus (1) includes a touch panel (40), pressure-sensitive sensors (60), and a control device (90) which is connected to the touch panel (40) and the pressure-sensitive sensors (60). The control device (90) includes a touch panel control unit (91) which outputs a detection signal on the basis of an output value of the touch panel (40), a setting unit (94) which sets, as a reference value (OP0), an output value (OPn) of the pressure-sensitive sensors (60) at a predetermined timing in a case where a detection signal is input from the touch panel control unit (91), and a first calculation unit (95) which calculates, as a first pressure (fn) of the pressure-sensitive sensor (60), a difference between an output value (OPn) of the pressure-sensitive sensor (60) after a predetermined timing and the reference value (OP0). The setting unit (94) individually sets the reference value (OP0) with respect to each of the pressure-sensitive sensors (60).
    Type: Application
    Filed: September 12, 2014
    Publication date: August 4, 2016
    Applicant: FUJIKURA LTD.
    Inventors: Toshiaki WATANABE, Osamu AOKI, Yasuyuki TACHIKAWA, Toshimizu TOMITSUKA, Makoto TAKAMATSU
  • Publication number: 20150378483
    Abstract: A method for producing a pressure detection device (1) includes a first process (S10) of preparing a pressure-sensitive sensor (2) which includes a first circuit (91) and a second circuit (92) electrically connecting each other in series, the first circuit (91) including a pressure-sensitive body (4) of which an electrical resistance value is consecutively changed according to a pressure, the second circuit (92) including a fixed resistor (5) of which an electrical resistance value can be adjusted to be a desired value; and a second process (S20) of adjusting the electrical resistance value of the fixed resistor (5) on the basis of a ratio (R2:R1) between an electrical resistance value (R2) of at least pressure-sensitive body (4) in the first circuit (91) and an electrical resistance value (R1) of at least fixed resistor (5) in the second circuit (92) in a case where a predetermined pressure is applied to the pressure-sensitive body (4).
    Type: Application
    Filed: January 30, 2014
    Publication date: December 31, 2015
    Applicant: FUJIKURA LTD.
    Inventors: Yasuyuki TACHIKAWA, Toshimizu TOMITSUKA, Makoto TAKAMATSU, Osamu AOKI, Toshiaki WATANABE
  • Publication number: 20150090579
    Abstract: An input device includes an insulation substrate, a switch element, and a detection portion. The switch element includes a fixed electrode portion that is provided on the substrate, and a movable electrode portion that is provided on a main surface side of the substrate, at least part of the movable electrode portion being elastically displaceable toward a direction approaching and leaving the fixed electrode portion. The movable electrode portion is displaceable toward a direction approaching the fixed electrode portion due to pressure from an object to be detected that is an electric conductor. The detection portion is capable of detecting a capacitance change caused by the object to be detected approaching and leaving the movable electrode portion and a capacitance change between the movable electrode portion and the fixed electrode portion produced by displacement of the movable electrode portion due to pressing.
    Type: Application
    Filed: December 10, 2014
    Publication date: April 2, 2015
    Applicant: FUJIKURA LTD.
    Inventors: Yohei KURIKAWA, Wataru KONDO, Makoto TAKAMATSU, Yoshinori SANO, Toshimizu TOMITSUKA, Yasushi ONO, Osamu AOKI, Shinsuke AOSHIMA, Yasuyuki TACHIKAWA
  • Publication number: 20060117219
    Abstract: Arbitrary data is read out from a main storage device, based on a permanent fault detection address that is used to detect a permanent fault on an address line. A bit error in the permanent fault detection address is detected and corrected, based on an error correcting code included in the arbitrary data read out. A permanent fault on the address line is determined, based on results of the error detection/correction.
    Type: Application
    Filed: March 31, 2005
    Publication date: June 1, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Hirotoshi Inoue, Makoto Takamatsu, Michisada Sugimoto, Terumasa Haneda, Toshiyuki Yoshida, Yuichi Ogawa
  • Patent number: 6957273
    Abstract: Priorities are set in order of an internal register access packet, a response system packet, and a command system packet which are transmitted/received by a packet transmitting/receiving unit. In a transfer waiting state of the command system packet of the low priority to a certain transmission destination, in the case where the response system packet or internal register access packet of the high priority to another transmission destination is received from an external module, the packet transmitting/receiving unit withdraws the transfer waiting state and transmits the packet of the high priority.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: October 18, 2005
    Assignee: Fujitsu Limited
    Inventors: Terumasa Haneda, Hiroshi Matsushita, Makoto Takamatsu, Yuji Hanaoka
  • Publication number: 20010023465
    Abstract: Priorities are set in order of an internal register access packet, a response system packet, and a command system packet which are transmitted/received by a packet transmitting/receiving unit. In a transfer waiting state of the command system packet of the low priority to a certain transmission destination, in the case where the response system packet or internal register access packet of the high priority to another transmission destination is received from an external module, the packet transmitting/receiving unit withdraws the transfer waiting state and transmits the packet of the high priority.
    Type: Application
    Filed: November 30, 2000
    Publication date: September 20, 2001
    Inventors: Terumasa Haneda, Hiroshi Matsushita, Makoto Takamatsu, Yuji Hanaoka