Patents by Inventor Tatsumi Tashiro
Tatsumi Tashiro 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: 8269476Abstract: A load controller includes: an input circuit which detects that a drive instruction signal is less or equal to a first input threshold value; a constant current source activated in accordance with a detection by the input circuit; a PWM signal generating unit that is activated by the constant current source and generates a PWM signal; a comparator that is activated by the constant current source and compares the drive instruction signal with a second input threshold value set to be lower than the first input threshold value; a logic calculation unit that carries out a logic calculation of the PWM signal with a compared result of the comparator; a drive control unit that operates in accordance with an output from the logic calculation unit to generate a PWM drive control signal; and a load driving element that is driven by the PWM drive control signal to control a load.Type: GrantFiled: December 11, 2008Date of Patent: September 18, 2012Assignees: Yazaki Corporation, Toyota Jidosha Kabushiki KaishaInventors: Hiroo Yabe, Tsuyoshi Uchikura, Tatsumi Tashiro, Akihiro Tanaka, Masahiro Kasai
-
Patent number: 7919995Abstract: A load controller includes: a first input circuit which detects that a drive instruction signal by an operation of a drive instructing unit is less or equal to a first input threshold value; a first constant current source activated in accordance with the detection; a PWM signal supply unit that is activated by the first constant current source and supplies a PWM signal having a prescribed frequency and a duty ratio; a constant control signal supply unit that supplies a constant control signal during failure of the first input circuit or the first constant current source; a drive control unit that generates a PWM drive control signal in accordance with the PWM signal and generates a constant drive control signal in accordance with the constant control signal; and a load driving element that is controlled by the PWM drive or constant drive control signal to drive a load.Type: GrantFiled: December 11, 2008Date of Patent: April 5, 2011Assignees: Yazaki Corporation, Toyota Jidosha Kabushiki KaishaInventors: Hiroo Yabe, Tsuyoshi Uchikura, Tatsumi Tashiro, Akihiro Tanaka, Masahiro Kasai
-
Patent number: 7830034Abstract: A connecting structure of a component in a wire harness includes a relay box connected to a circuit at a power supply side and a circuit at a headlamp side, and a control unit connected to the relay box. A connecting section of the relay box is configured to be selectively connected to either one of a headlamp control device and a relay for turning on and off low beam or high beam. Both of the headlamp control device and the relay have terminals of the same shape.Type: GrantFiled: September 9, 2008Date of Patent: November 9, 2010Assignee: Yazaki CorporationInventors: Kazumi Nagasawa, Takao Ota, Tsuyoshi Uchikura, Masato Kume, Tatsumi Tashiro
-
Publication number: 20090153235Abstract: A load controller includes: a first input circuit which detects that a drive instruction signal by an operation of a drive instructing unit is less or equal to a first input threshold value; a first constant current source activated in accordance with the detection; a PWM signal supply unit that is activated by the first constant current source and supplies a PWM signal having a prescribed frequency and a duty ratio; a constant control signal supply unit that supplies a constant control signal during failure of the first input circuit or the first constant current source; a drive control unit that generates a PWM drive control signal in accordance with the PWM signal and generates a constant drive control signal in accordance with the constant control signal; and a load driving element that is controlled by the PWM drive or constant drive control signal to drive a load.Type: ApplicationFiled: December 11, 2008Publication date: June 18, 2009Applicants: Yazaki Corporation, Toyota Jidosha Kabushiki KaishaInventors: Hiroo YABE, Tsuyoshi UCHIKURA, Tatsumi TASHIRO, Akihiro TANAKA, Masahiro KASAI
-
Publication number: 20090153117Abstract: A load controller includes: an input circuit which detects that a drive instruction signal is less or equal to a first input threshold value; a constant current source activated in accordance with a detection by the input circuit; a PWM signal generating unit that is activated by the constant current source and generates a PWM signal; a comparator that is activated by the constant current source and compares the drive instruction signal with a second input threshold value set to be lower than the first input threshold value; a logic calculation unit that carries out a logic calculation of the PWM signal with a compared result of the comparator; a drive control unit that operates in accordance with an output from the logic calculation unit to generate a PWM drive control signal; and a load driving element that is driven by the PWM drive control signal to control a load.Type: ApplicationFiled: December 11, 2008Publication date: June 18, 2009Applicants: YAZAKI CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroo YABE, Tsuyoshi UCHIKURA, Tatsumi TASHIRO, Akihiro TANAKA, Masahiro KASAI
-
Publication number: 20090068900Abstract: A connecting structure of a component in a wire harness includes a relay box connected to a circuit at a power supply side and a circuit at a headlamp side, and a control unit connected to the relay box. A connecting section of the relay box is configured to be selectively connected to either one of a headlamp control device and a relay for turning on and off low beam or high beam. Both of the headlamp control device and the relay have terminals of the same shape.Type: ApplicationFiled: September 9, 2008Publication date: March 12, 2009Applicant: YAZAKI CORPORATIONInventors: Kazumi NAGASAWA, Takao OTA, Tsuyoshi UCHIKURA, Masato KUME, Tatsumi TASHIRO
-
Patent number: 6798085Abstract: A position detection device enables an accurate detection of a position of a moving object. Two cam surfaces are formed on an outer peripheral surface of a rotary body (22) and micros-witches (38, 39) are brought into contact with respective cam surfaces and a logic (L, H) can be established based on signals from two switches.Type: GrantFiled: October 17, 2000Date of Patent: September 28, 2004Assignee: Aisin Seiki Kabushiki KaishaInventors: Seika Matsui, Toshiro Maeda, Tatsumi Tashiro, Shinji Suganuma, Junkoh Shima
-
Patent number: 6445147Abstract: An open/close body control system for a vehicle can stabilize outputs of a pair of electrically operated motors (M1, M2) which drive an open/close body for a vehicle. Speeds of the electrically-operated motor (M1, M2) are synchronously controlled such that predictive positions (XLt+1, XRt+1) of electrically-operated motor (M1, M2) after a lapse of a unit time gradually approach a target position (XTRG) calculated based on present positions (XLt, XRt) and a target speed (&Dgr;XTRG) of the electrically-operated motors (M1, M2).Type: GrantFiled: October 17, 2000Date of Patent: September 3, 2002Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasushi Saitoh, Koichi Hirota, Tatsumi Tashiro, Shinji Suganuma, Junkoh Shima
-
Patent number: 6353300Abstract: In an open roof operating method, when a pulse of a value equal to or greater than a set value is inputted to an ECU when the outputting of motors is stopped, simultaneous operations of respective components are stopped. By adding a sequential non-interference operation flow to a simultaneous operation flow, the interference among respective components under specific conditions can be obviated.Type: GrantFiled: October 17, 2000Date of Patent: March 5, 2002Assignee: Aisin Seiki Kabushiki KaishaInventors: Seika Matsui, Yoshihiro Nakamura, Tatsumi Tashiro, Shinji Suganuma, Junkoh Shima
-
Patent number: 5957269Abstract: A mounting bolt 30 has a disclike flange portion 30b formed on an end of a tightening portion 30a. A switch bracket 28 is fixed to a screw hole 12 by tightening the bolt 30 with the bolt 30 inserted into a mounting hole 29 formed so as to have the same diameter as the screw hole 12. A rubber cover 21 covers the switch bracket 28, and has an annular seal portion 21a formed thereon. The seal portion 21a is larger in diameter than the mounting hole 29 and smaller in diameter than the flange portion 30b. A stepped portion 30c is formed on the bolt 30 in such a manner that a surface of contact thereof with the bracket 28 extends in parallel to the bracket 28, that the diameter thereof is larger than the mounting hole 29 and smaller than the seal portion 21a, and that the length thereof in an axial direction is such that the flange portion 30b biases the seal portion 21a at the time of tightening the bolt 30.Type: GrantFiled: July 30, 1997Date of Patent: September 28, 1999Assignee: Kabushiki Kaisha Tokai Denki SeisakushoInventors: Kazuharu Sahashi, Yasuyoshi Kawada, Yukihiko Umeda, Masahiro Kasai, Tatsumi Tashiro