Patents by Inventor Teiichi Ichikawa
Teiichi Ichikawa 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: 20240126393Abstract: A proximity detection device according to the present invention includes: a plurality of light emitting elements; a plurality of light receiving elements; a drive circuit configured to sequentially drive the plurality of light emitting elements; a measurement circuit configured to measure a light reception signal of a corresponding light receiving element when the plurality of light emitting elements are sequentially driven; and a control unit configured to i) control a drive current of a light emitting element such that a light emission amount of the light emitting element is suppressed, and ii) amplify a detection signal of a light receiving element to compensate for the suppressed light emission amount during measurement with a relatively short distance between the light emitting element and the light receiving element.Type: ApplicationFiled: September 13, 2023Publication date: April 18, 2024Applicant: Alps Alpine Co., Ltd.Inventors: Teiichi Ichikawa, Shohei Yoshida
-
Patent number: 11960678Abstract: Four infrared LEDs and two photodiodes PD are arranged below a lower side of a display surface in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4. A detection signal A1 of the PD1 when the LED1 emits light, a detection signal A2 of the PD1 when the LED2 emits light, a detection signal A3 of the PD2 when the LED3 emits light, and a detection signal A4 of the PD2 when the LED4 emits light are used to estimate a reflection generation position in the left-right direction, and a threshold Th is set such that the threshold Th increases when the reflection generation position is on the left side, which is a driver's seat side. If the maximum value of A1, A2, A3, and A4 exceeds the threshold Th, the approach of the user's hand is detected.Type: GrantFiled: January 7, 2021Date of Patent: April 16, 2024Assignee: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Publication number: 20230289010Abstract: A proximity detection device includes a detection controller and a touch panel. The detection controller includes a drive unit that drives a sensor line on an X side or a Y side, a measurement unit that measures capacitance Cm, Cpx, and Cpy formed by the sensor line on the X side or the Y side, and a detection unit that performs touch detection or hover detection based on the capacitance Cm, Cpx, and Cpy measured by the measurement unit. When detecting a hover, the drive unit changes a frequency of the drive signal that drives the sensor line on the X side or the Y side and this improves a hover detection sensitivity.Type: ApplicationFiled: February 10, 2023Publication date: September 14, 2023Applicant: ALPS ALPINE CO., LTD.Inventor: Teiichi Ichikawa
-
Patent number: 11709572Abstract: An electrostatic-capacitive proximity detecting device includes an electrode unit including a plurality of electrodes linearly arranged along one direction; an electrostatic capacitance detector that drives the electrodes in a time division manner and detects detection values corresponding to electrostatic capacitances between a to-be-detected object and the respective electrodes; and a position detector that detects a position of the to-be-detected object in the one direction, based on arrangement positions of the respective electrodes in the one direction and a bias in magnitudes of the detection values detected for the respective electrodes by the electrostatic capacitance detector.Type: GrantFiled: February 7, 2022Date of Patent: July 25, 2023Assignee: Alps Alpine Co., LTD.Inventor: Teiichi Ichikawa
-
Patent number: 11416103Abstract: Implementations of a proximity detection device according to the present disclosure include a plurality of light emitting elements and a plurality of light receiving elements arranged in a lower portion of a touch panel display. The proximity detection device detects an object that is in proximity by reflected light received by the light receiving elements when irradiation light from the light emitting elements is reflected by the object. Implementations of a proximity detection device includes a drive circuit sequentially driving the plurality of light emitting elements, a measurement circuit measuring detection levels of the light receiving elements when the plurality of light emitting elements sequentially emit light, respectively, and a control unit having a function to estimate a position in the horizontal direction from a plurality of measurement results and correct the estimated position.Type: GrantFiled: June 30, 2021Date of Patent: August 16, 2022Assignee: ALPS ALPINE CO., LTD.Inventor: Teiichi Ichikawa
-
Publication number: 20220253180Abstract: An electrostatic-capacitive proximity detecting device includes an electrode unit including a plurality of electrodes linearly arranged along one direction; an electrostatic capacitance detector that drives the electrodes in a time division manner and detects detection values corresponding to electrostatic capacitances between a to-be-detected object and the respective electrodes; and a position detector that detects a position of the to-be-detected object in the one direction, based on arrangement positions of the respective electrodes in the one direction and a bias in magnitudes of the detection values detected for the respective electrodes by the electrostatic capacitance detector.Type: ApplicationFiled: February 7, 2022Publication date: August 11, 2022Applicant: Alps Alpine Co., LTDInventor: Teiichi ICHIKAWA
-
Patent number: 11412104Abstract: A proximity detection device detects the proximity of an object using a light emitting element and a light receiving element that receives reflected light of irradiation light from the light emitting element reflected by the object. A mirror is provided near the light emitting element to reflect part of the irradiation light emitted from the light emitting element toward an area at which the irradiation light from the light emitting element does not sufficiently arrive, and a mirror is provided near the light receiving element to enable reception of the reflected light from the light emitting element in a wide range.Type: GrantFiled: November 18, 2020Date of Patent: August 9, 2022Assignee: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Patent number: 11284490Abstract: A plurality of infrared LEDs, e.g., four, and a plurality of photodiodes, e.g., two, are arranged side by side in interleaved fashion in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4, and are arranged slightly outside a side of the display surface. A threshold value Th is set so as to become small as max(Ei)/max(Aj) calculated from a detection signal of the PD1 when the LED1 emits light, a detection signal of the PD1 when the LED2 emits light, a detection signal of the PD2 when the LED3 emits light, a detection signal of the PD2 when the LED4 emits light, a detection signal of the PD2 when the LED1 emits light, and a detection signal of the PD1 when the LED4 emits light, and the approach of the hand of the user is detected when max(Aj) exceeds the threshold value.Type: GrantFiled: November 18, 2020Date of Patent: March 22, 2022Assignee: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Publication number: 20220011877Abstract: Implementations of a proximity detection device according to the present disclosure include a plurality of light emitting elements and a plurality of light receiving elements arranged in a lower portion of a touch panel display. The proximity detection device detects an object that is in proximity by reflected light received by the light receiving elements when irradiation light from the light emitting elements is reflected by the object. Implementations of a proximity detection device includes a drive circuit sequentially driving the plurality of light emitting elements, a measurement circuit measuring detection levels of the light receiving elements when the plurality of light emitting elements sequentially emit light, respectively, and a control unit having a function to estimate a position in the horizontal direction from a plurality of measurement results and correct the estimated position.Type: ApplicationFiled: June 30, 2021Publication date: January 13, 2022Applicant: ALPS ALPINE CO., LTD.Inventor: Teiichi Ichikawa
-
Publication number: 20210232259Abstract: Four infrared LEDs and two photodiodes PD are arranged below a lower side of a display surface in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4. A detection signal A1 of the PD1 when the LED1 emits light, a detection signal A2 of the PD1 when the LED2 emits light, a detection signal A3 of the PD2 when the LED3 emits light, and a detection signal A4 of the PD2 when the LED4 emits light are used to estimate a reflection generation position in the left-right direction, and a threshold Th is set such that the threshold Th increases when the reflection generation position is on the left side, which is a driver's seat side. If the maximum value of A1, A2, A3, and A4 exceeds the threshold Th, the approach of the user's hand is detected.Type: ApplicationFiled: January 7, 2021Publication date: July 29, 2021Applicant: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Publication number: 20210227665Abstract: A plurality of infrared LEDs, e.g., four, and a plurality of photodiodes, e.g., two, are arranged side by side in interleaved fashion in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4, and are arranged slightly ouside a side of the display surface. A threshold value Th is set so as to become small as max(Ei)/max(Aj) calculated from a detection signal of the PD1 when the LED1 emits light, a detection signal of the PD1 when the LED2 emits light, a detection signal of the PD2 when the LED3 emits light, a detection signal of the PD2 when the LED4 emits light, a detection signal of the PD2 when the LED1 emits light, and a detection signal of the PD1 when the LED4 emits light, and the approach of the hand of the user is detected when max(Aj) exceeds the threshold value.Type: ApplicationFiled: November 18, 2020Publication date: July 22, 2021Applicant: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Publication number: 20210195050Abstract: A proximity detection device detects the proximity of an object using a light emitting element and a light receiving element that receives reflected light of irradiation light from the light emitting element reflected by the object. A mirror is provided near the light emitting element to reflect part of the irradiation light emitted from the light emitting element toward an area at which the irradiation light from the light emitting element does not sufficiently arrive, and a mirror is provided near the light receiving element to enable reception of the reflected light from the light emitting element in a wide range.Type: ApplicationFiled: November 18, 2020Publication date: June 24, 2021Applicant: ALPINE ELECTRONICS, INC.Inventor: Teiichi Ichikawa
-
Publication number: 20100021140Abstract: An information reproduction method comprises setting an imaginary access unit in a video object in which a still picture is recorded; and managing reproduction by use of the imaginary access unit.Type: ApplicationFiled: October 7, 2009Publication date: January 28, 2010Inventors: Hideo ANDO, Kazuhiko Taira, Hideki Mimura, Teiichi Ichikawa, Yasufumi Tsumagari, Yoichiro Yamagata, Yumiko Taga, Minoru Ohta
-
Publication number: 20100014837Abstract: An information storage medium records contents and sets for each of the contents a resume permission flag indicating whether or not reproduction resume is permitted by a reproduction resume command or a command of a reproduction device executed based on a user operation.Type: ApplicationFiled: September 25, 2009Publication date: January 21, 2010Inventors: Hideo ANDO, Kazuhiko Taira, Hideki Mimura, Teiichi Ichikawa, Yasufumi Tsumagari, Yoichiro Yamagata, Yumiko Taga, Minoru Ohta
-
Patent number: 7616863Abstract: An information reproduction method comprises setting an imaginary access unit in a video object in which a still picture is recorded; and managing reproduction by use of the imaginary access unit.Type: GrantFiled: May 13, 2004Date of Patent: November 10, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Hideo Ando, Kazuhiko Taira, Hideki Mimura, Teiichi Ichikawa, Yasufumi Tsumagari, Yoichiro Yamagata, Yumiko Taga, Minoru Ohta
-
Patent number: 7493013Abstract: An information recording method of recording object information (VOB) and reproducing control information (PGC) is provided. In this method, while the object information is recorded, the reproducing control information (PGC) defining a method of reproducing the object information and further defining a predetermined command executed according to a predetermined operation of a user is recorded in an information recording medium, and a desired reproducing action can be carried out by allocating an arbitrary command and the like to an arbitrary operation.Type: GrantFiled: December 23, 2003Date of Patent: February 17, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Teiichi Ichikawa, Yumiko Taga
-
Patent number: 7423672Abstract: In a picture data recording method of an aspect of this invention, main picture data having a first resolution, sub-picture data having the first resolution, and sub-picture data having a second resolution lower than the first resolution are compressed, packets are formed from the compressed data in accordance with predetermined units and multiplexed, and the multiplexed data is recorded on a recording medium.Type: GrantFiled: July 2, 2003Date of Patent: September 9, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Yumiko Taga, Teiichi Ichikawa
-
Patent number: 7164799Abstract: According to one embodiment, an information recording medium includes a video object area for recording a video object formed of video object units which is a minimum unit for reproduction, and a highlight information pack which is included in the video object unit.Type: GrantFiled: March 29, 2006Date of Patent: January 16, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Kazuhiko Taira, Teiichi Ichikawa, Yumiko Taga
-
Publication number: 20060188232Abstract: According to one embodiment, an information recording medium includes a video object area for recording a video object formed of video object units which is a minimum unit for reproduction, and a highlight information pack which is included in the video object unit.Type: ApplicationFiled: March 29, 2006Publication date: August 24, 2006Inventors: Kazuhiko Taira, Teiichi Ichikawa, Yumiko Taga
-
Publication number: 20050254787Abstract: An information storage medium records contents and sets for each of the contents a resume permission flag indicating whether or not reproduction resume is permitted by a reproduction resume command or a command of a reproduction device executed based on a user operation.Type: ApplicationFiled: May 13, 2004Publication date: November 17, 2005Inventors: Hideo Ando, Kazuhiko Taira, Hideki Mimura, Teiichi Ichikawa, Yasufumi Tsumagari, Yoichiro Yamagata, Yumiko Taga, Minoru Ohta