Patents by Inventor Kazunori Hiramatsu
Kazunori Hiramatsu 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: 7688296Abstract: A cholesteric liquid crystal driving device according to the present invention includes a first driving circuit for displaying one part of the image data to be displayed by a cholesteric liquid crystal on a first scanning line by driving the cholesteric liquid crystal on the first scanning line in accordance with first and second cycles; and a second driving circuit for displaying the other part of the image data to be displayed by a cholesteric liquid crystal on a second scanning line by driving the cholesteric liquid crystal on the second scanning line in accordance with a third or fourth cycle.Type: GrantFiled: January 20, 2005Date of Patent: March 30, 2010Assignee: Seiko Epson CorporationInventors: Masato Nishizawa, Kazunori Hiramatsu, Munenori Sawada
-
Patent number: 7627907Abstract: The present invention is adapted to make all the pixels of electrophoretic display 17 white (step S103) when light no longer incomes on the face of electrophoretic display 17 (“Yes” at step S102) . When someone places the face of electrophoretic display 17 on a contact glass of a copy machine to copy the contents on electrophoretic display 17 as they are, all the contents currently displayed on electrophoretic display 17 is deleted. As the result, the present invention can prevent the contents on electrophoretic display 17 from being easily copied by the copy machine as they are.Type: GrantFiled: December 10, 2004Date of Patent: December 1, 2009Assignee: Seiko Epson CorporationInventors: Munenori Sawada, Kazunori Hiramatsu
-
Publication number: 20080024460Abstract: A writing device is provided for color electronic paper which is capable of performing full color display. The writing device includes a head unit, a head unit moving mechanism which moves the head unit in a first direction, a feeding mechanism which moves electronic paper, and a controller. The head unit includes a writing head, an LED which emits light of three primary colors, an image sensing element consisting of a CMOS sensor, and an optical system. The writing head includes an optically transparent head main portion provided with pixel electrodes, and a common electrode (counter electrode). In the controller, an arrangement of three types of microcapsules in a microcapsule layer is detected to perform electric field formation for each of the pixel electrodes based on a detection result.Type: ApplicationFiled: September 27, 2007Publication date: January 31, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Yoshiyuki KODAMA, Kazunori HIRAMATSU
-
Patent number: 7292231Abstract: A writing device is provided for color electronic paper which is capable of performing full color display. The writing device includes a head unit, a head unit moving mechanism which moves the head unit in a first direction, a feeding mechanism which moves electronic paper, and a controller. The head unit includes a writing head, an LED which emits light of three primary colors, an image sensing element consisting of a CMOS sensor, and an optical system. The writing head includes an optically transparent head main portion provided with pixel electrodes, and a common electrode (counter electrode). In the controller, an arrangement of three types of microcapsules in a microcapsule layer is detected to perform electric field formation for each of the pixel electrodes based on a detection result.Type: GrantFiled: February 20, 2004Date of Patent: November 6, 2007Assignee: Seiko Epson CorporationInventors: Yoshiyuki Kodama, Kazunori Hiramatsu
-
Publication number: 20070182704Abstract: An electrophoretic display according to the present invention includes a first reset step for applying a first voltage to electrophoretic devices such that no image is displayed and no afterimages are present in the electrophoretic devices between a first step for displaying a first image on the electrophoretic devices and a second step for displaying a second image on the electrophoretic devices and a second reset step for applying a second voltage higher than the first voltage such that no image is displayed and no afterimage is present in the electrophoretic devices at a frequency less than that at which the first reset step is performed.Type: ApplicationFiled: March 25, 2005Publication date: August 9, 2007Applicant: SEIKO EPSON CORPORATIONInventor: Kazunori Hiramatsu
-
Publication number: 20070159430Abstract: A cholesteric liquid crystal driving device according to the present invention includes a first driving circuit for displaying one part of the image data to be displayed by a cholesteric liquid crystal on a first scanning line by driving the cholesteric liquid crystal on the first scanning line in accordance with first and second cycles; and a second driving circuit for displaying the other part of the image data to be displayed by a cholesteric liquid crystal on a second scanning line by driving the cholesteric liquid crystal on the second scanning line in accordance with a third or fourth cycle.Type: ApplicationFiled: January 20, 2005Publication date: July 12, 2007Inventors: Masato Nishizawa, Kazunori Hiramatsu, Munenori Sawada
-
Publication number: 20050212761Abstract: The present invention is adapted to make all the pixels of electrophoretic display 17 white (step S103) when light no longer incomes on the face of electrophoretic display 17 (“Yes” at step S102) . When someone places the face of electrophoretic display 17 on a contact glass of a copy machine to copy the contents on electrophoretic display 17 as they are, all the contents currently displayed on electrophoretic display 17 is deleted. As the result, the present invention can prevent the contents on electrophoretic display 17 from being easily copied by the copy machine as they are.Type: ApplicationFiled: December 10, 2004Publication date: September 29, 2005Inventors: Munenori Sawada, Kazunori Hiramatsu
-
Publication number: 20050140576Abstract: An image display device according to the present invention includes an electrophoretic display member 2 that can display a predetermined image, a liquid crystal display member 3 placed in front of the electrophoretic display member 2 and which can display the predetermined image at a higher speed than the electrophoretic display member 2, and a control device that causes the electrophoretic display member 2 and the liquid crystal display member 3 to display the image corresponding to the same image data at the same position as viewed from front of the device. The control device makes the liquid crystal display member 3 transparent after the predetermined image has been displayed in the electrophoretic display member 2.Type: ApplicationFiled: September 27, 2004Publication date: June 30, 2005Inventors: Munenori Sawada, Kazunori Hiramatsu, Masato Nishizawa
-
Patent number: 6829394Abstract: A system and method of pointed position detection, a presentation system, and a program for accurately detecting a pointed position based on an infrared image or the like. The configuration comprises a CCD camera for taking an image of an image display region, and a processing section that functions as a position detection means which detects a pointed position of a pointing image within an image display region that has been formed by infrared light through an optical filter that passes only infrared light. A movement magnitude computation section within the processing section detects movement of a pointer implement, based on the infrared image that was formed by infrared light and taken by the CCD camera, and a pointing coordinate detection section detects the pointed position of that pointing image in a state in which movement of the pointer implement is halted.Type: GrantFiled: February 21, 2001Date of Patent: December 7, 2004Assignee: Seiko Epson CorporationInventor: Kazunori Hiramatsu
-
Publication number: 20040212600Abstract: A writing device is provided for color electronic paper which is capable of performing full color display. The writing device includes a head unit, a head unit moving mechanism which moves the head unit in a first direction, a feeding mechanism which moves electronic paper, and a controller. The head unit includes a writing head, an LED which emits light of three primary colors, an image sensing element consisting of a CMOS sensor, and an optical system. The writing head includes an optically transparent head main portion provided with pixel electrodes, and a common electrode (counter electrode). In the controller, an arrangement of three types of microcapsules in a microcapsule layer is detected to perform electric field formation for each of the pixel electrodes based on a detection result.Type: ApplicationFiled: February 20, 2004Publication date: October 28, 2004Inventors: Yoshiyuki Kodama, Kazunori Hiramatsu
-
Patent number: 6798926Abstract: A system and method of pointed position detection, a presentation system, and a program that make it possible to detect a pointed position accurately. The system of the present invention which detects a position of a light spot that has been projected into an image display region by using an infrared pointer comprises: a CCD camera that picks up an image of this image display region; a pointing coordinate detection section that is position detection means which detects a pointed position of the light spot within the image display region; and a receiver section which receive a state signal that is transmitted from the infrared pointer during a pointer operation by that infrared pointer. The pointing coordinate detection section detects a position of the light spot as the pointed position on the image display region, based on the reception timing of the state signal.Type: GrantFiled: February 21, 2001Date of Patent: September 28, 2004Assignee: Seiko Epson CorporationInventor: Kazunori Hiramatsu
-
Patent number: 6512507Abstract: The present invention relates to a pointing position detection device that can automatically sense a pointing position within a display region. This pointing position detection device comprises a CCD camera acquiring an image of a display region in which an image has been displayed; a binary-data processing section for detecting a pointing position of a shadow region or an actual image region that is an image region of a pointing image included within an image-acquisition area, based on an image-acquisition signal of the CCD camera 14; and a pointing coordinates detection section.Type: GrantFiled: March 26, 1999Date of Patent: January 28, 2003Assignee: Seiko Epson CorporationInventors: Takeshi Furihata, Kazunori Hiramatsu, Kunio Yoneno, Junichi Nakamura
-
Patent number: 6339748Abstract: The present invention has a object to provide a coordinate input system imparting a coordinate input function onto a transmissive screen for image display such as a rear projecting display apparatus, which permits use of a ray reflecting indicator smaller in size and lighter in weight than a light pen and to improve easiness to use. The coordinate input system of the invention has an infrared ray source 3 which projects an infrared ray onto the back surface of the transmissive screen 2 for image display, a CCD camera 4 which covers the back surface of the transmissive screen as a senses range, and an image information processing circuit 5 which generates coordinate information of a ray reflecting indicator 1 located in front of the transmissive screen 2, from output image information of the CCD camera.Type: GrantFiled: November 5, 1998Date of Patent: January 15, 2002Assignee: Seiko Epson CorporationInventor: Kazunori Hiramatsu
-
Publication number: 20010026645Abstract: A system and method of pointed position detection, a presentation system, and a program that make it possible to detect a pointed position accurately. The system of the present invention which detects a position of a light spot that has been projected into an image display region by using an infrared pointer comprises: a CCD camera that picks up an image of this image display region; a pointing coordinate detection section that is position detection means which detects a pointed position of the light spot within the image display region; and a receiver section which receive a state signal that is transmitted from the infrared pointer during a pointer operation by that infrared pointer. The pointing coordinate detection section detects a position of the light spot as the pointed position on the image display region, based on the reception timing of the state signal.Type: ApplicationFiled: February 21, 2001Publication date: October 4, 2001Inventor: Kazunori Hiramatsu
-
Publication number: 20010022861Abstract: A system and method of pointed position detection, a presentation system, and a program for accurately detecting a pointed position based on an infrared image or the like. The configuration comprises a CCD camera for taking an image of an image display region, and a processing section that functions as a position detection means which detects a pointed position of a pointing image within an image display region that has been formed by infrared light through an optical filter that passes only infrared light. A movement magnitude computation section within the processing section detects movement of a pointer implement, based on the infrared image that was formed by infrared light and taken by the CCD camera, and a pointing coordinate detection section detects the pointed position of that pointing image in a state in which movement of the pointer implement is halted.Type: ApplicationFiled: February 21, 2001Publication date: September 20, 2001Inventor: Kazunori Hiramatsu