Patents by Inventor Yasuhide Iwamoto
Yasuhide Iwamoto 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).
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Patent number: 6844539Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: GrantFiled: September 24, 2002Date of Patent: January 18, 2005Assignee: Fujitsu LimitedInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Patent number: 6838657Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: GrantFiled: May 19, 2004Date of Patent: January 4, 2005Assignee: Fujitsu LimitedInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20040219888Abstract: A duplexer includes two surface acoustic wave (SAW) filters having different center frequencies; a phase matching circuit that matches phases of the two SAW filters; a package in which the SAW filters and the phase matching circuit are housed, the package being composed of multiple layers; and a line pattern provided between at least one of the SAW filters and at least one of a transmit terminal and a receive terminal of the duplexer. The line pattern runs on at least two of the multiple layers within a range defined by peripheral ground patterns provided in the package.Type: ApplicationFiled: April 29, 2004Publication date: November 4, 2004Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Shogo Inoue, Jun Tsutsumi
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Publication number: 20040218479Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: ApplicationFiled: May 19, 2004Publication date: November 4, 2004Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20040212451Abstract: A duplexer includes two surface acoustic wave (SAW) filters having different center frequencies, a phase matching circuit that matches phases of the two SAW filters, a package in which the SAW filters and the phase matching circuit are housed, the package having a die-attached layer on which a chip of the SAW filters is facedown mounted, and ground line patterns provided on the die-attached layer and an underlying layer that underlies the die-attached layer, the ground line patterns forming inductances.Type: ApplicationFiled: April 19, 2004Publication date: October 28, 2004Applicants: FUJITSU MEDIA DEVICES LIMITED, FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Takashi Matsuda
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Publication number: 20040206889Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: ApplicationFiled: May 19, 2004Publication date: October 21, 2004Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20040207858Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: ApplicationFiled: May 19, 2004Publication date: October 21, 2004Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20040155730Abstract: A duplexer includes two surface acoustic wave filter having different band center frequencies, and a phase matching circuit that matches the phases of the two surface acoustic wave filters to each other. In this duplexer, one of the two surface acoustic wave filters is a ladder type surface acoustic wave filter, while the other one of the two surface acoustic wave filters includes two or more dual-mode type surface acoustic wave filters that are connected in parallel.Type: ApplicationFiled: October 22, 2003Publication date: August 12, 2004Inventors: Yasuhide Iwamoto, Shogo Inoue, Osamu Ikata, Jun Tsutsumi
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Patent number: 6664952Abstract: An optical unit of an optical scanning-type touch panel is constructed by providing a light emitting element for emitting infrared laser light, a collimation lens for changing the laser light from the light emitting element into parallel light, a light receiving element for receiving scanning light, a slit plate for limiting incident light on the light receiving element, a polygon mirror for angularly scanning the laser light from the light emitting element, an aperture mirror for limiting light projected onto the polygon mirror from the collimation lens by an aperture and for reflecting the reflected light from the polygon mirror toward the light receiving element, a light receiving lens for focusing the reflected light from the aperture mirror, and a motor for rotating the polygon mirror in a single optical unit main body as one unit.Type: GrantFiled: April 30, 2001Date of Patent: December 16, 2003Assignee: Fujitsu LimitedInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Patent number: 6627871Abstract: An optical position detecting device includes side frames on three sides, which are composed of slide parts and guide parts for guiding the slide parts and provided with light retro-reflectors; and a side frame on one side, which is composed of a slide part and a guide part for guiding the slide part and incorporates two optical units including light emitting elements, polygon mirrors and light receiving elements, and the optical position detecting device is externally fixed to a display apparatus by moving the slide parts.Type: GrantFiled: June 21, 2002Date of Patent: September 30, 2003Assignee: Fujitsu LimitedInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa
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Publication number: 20030098757Abstract: A duplexer includes a multilayer package, SAW filters that have different band center frequencies and are provided in the multilayer package, and a phase matching line that matches phases of the SAW filters and are provided in the multilayer package. A ground pattern with respect to the phase matching line is provided on a mount surface of the multilayer package.Type: ApplicationFiled: November 18, 2002Publication date: May 29, 2003Inventors: Yasuhide Iwamoto, Osamu Ikata
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Publication number: 20030020008Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.Type: ApplicationFiled: September 24, 2002Publication date: January 30, 2003Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Patent number: 6492633Abstract: In order to measure a scanning light cut-off region, an output of a light receiving element and a threshold value set by an MPU are compared by a comparator and a region where the former is smaller than the latter is measured as the scanning light cut-off region. During one cycle of optical scanning, this threshold value is switched in a plurality of stages according to the scanning angle. By accurately measuring the scanning light cut-off region, the correct position and size of an indicator such as a finger or pen are calculated.Type: GrantFiled: January 18, 2001Date of Patent: December 10, 2002Assignee: Fujitsu LimitedInventors: Fumihiko Nakazawa, Satoshi Sano, Atsuo Iida, Nobuyasu Yamaguchi, Yasuhide Iwamoto
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Publication number: 20020162949Abstract: An optical position detecting device includes side frames on three sides, which are composed of slide parts and guide parts for guiding the slide parts and provided with light retro-reflectors; and a side frame on one side, which is composed of a slide part and a guide part for guiding the slide part and incorporates two optical units including light emitting elements, polygon mirrors and light receiving elements, and the optical position detecting device is externally fixed to a display apparatus by moving the slide parts.Type: ApplicationFiled: June 21, 2002Publication date: November 7, 2002Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa
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Patent number: 6466103Abstract: This invention is a duplexer device comprising two surface acoustic wave filters having band center frequencies different from each other and a line pattern for matching phases of the two surface acoustic Wave filters, wherein provided are: a wire bonding pad layer having a plurality of pads including. pads. for connecting the line pattern with terminals on the surface acoustic wave filters and pads for connecting a common terminal connected to. an external antenna with the line pattern; and a first pad connecting one of the surface acoustic wave filters and a first end of the line pattern and a second pad connecting the common terminal and a second end of the line pattern being arranged at positions that are the most distant from each other inside the wire bonding pad layer.Type: GrantFiled: June 28, 2001Date of Patent: October 15, 2002Assignees: Fujitsu Limited, Fujitsu Media Devices LimitedInventors: Yasuhide Iwamoto, Osamu Ikata, Nobuo Hirasawa, Hidenori Fukushima
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Publication number: 20020109561Abstract: This invention is a duplexer device comprising two surface acoustic wave filters having band center frequencies different from each other and a line pattern for matching phases of the two surface acoustic wave filters, wherein provided are: a wire bonding pad layer having a plurality of pads including pads for connecting the line pattern with terminals on the surface acoustic wave filters and pads for connecting a common terminal connected to an external antenna with the line pattern; and a first pad connecting one of the surface acoustic wave filters and a first end of the line pattern and a second pad connecting the common terminal and a second end of the line pattern being arranged at positions that are the most distant from each other inside the wire bonding pad layer.Type: ApplicationFiled: June 28, 2001Publication date: August 15, 2002Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Osamu Ikata, Nobuo Hirasawa, Hidenori Fukushima
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Publication number: 20010055006Abstract: Laser light emitted by a light emitting element is made parallel light by a collimation lens, passes through an aperture of an aperture mirror, and is then angularly scanned in a plane substantially parallel to a display screen by rotation of a polygon mirror and projected onto a recurrence reflection sheet. Then, after the reflected light from the recurrence reflection sheet is reflected by the polygon mirror and aperture mirror, the light is focused by a condenser lens to enter a light receiving element. The aperture mirror has an asymmetrical shape in the scanning direction and/or the vertical direction about the optical axis, according to a scanning surface opening width of the polygon mirror.Type: ApplicationFiled: June 7, 2001Publication date: December 27, 2001Applicant: FUJITSU LIMITEDInventors: Satoshi Sano, Yasuhide Iwamoto, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20010028344Abstract: An optical unit of an optical scanning-type touch panel is constructed by providing a light emitting element for emitting infrared laser light, a collimation lens for changing the laser light from the light emitting element into parallel light, a light receiving element for receiving scanning light, a slit plate for limiting incident light on the light receiving element, a polygon mirror for angularly scanning the laser light from the light emitting element, an aperture mirror for limiting light projected onto the polygon mirror from the collimation lens by an aperture and for reflecting the reflected light from the polygon mirror toward the light receiving element, a light receiving lens for focusing the reflected light from the aperture mirror, and a motor for rotating the polygon mirror in a single optical unit main body as one unit.Type: ApplicationFiled: April 30, 2001Publication date: October 11, 2001Applicant: FUJITSU LIMITEDInventors: Yasuhide Iwamoto, Satoshi Sano, Fumihiko Nakazawa, Nobuyasu Yamaguchi
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Publication number: 20010002694Abstract: In order to measure a scanning light cut-off region, an output of a light receiving element and a threshold value set by an MPU are compared by a comparator and a region where the former is smaller than the latter is measured as the scanning light cut-off region. During one cycle of optical scanning, this threshold value is switched in a plurality of stages according to the scanning angle. By accurately measuring the scanning light cut-off region, the correct position and size of an indicator such as a finger or pen are calculated.Type: ApplicationFiled: January 18, 2001Publication date: June 7, 2001Applicant: FUJITSU LIMITEDInventors: Fumihiko Nakazawa, Satoshi Sano, Atsuo Iida, Nobuyasu Yamaguchi, Yasuhide Iwamoto
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Patent number: 5750941Abstract: The ultrasonic coordinates input device includes receivers grouped into a plurality of groups, each receiver receiving the ultrasonic waves propagated through a propagator so as to calculate the coordinates of the ultrasonic wave inputted positions on the basis of signals received by each group, thereby ensuring that the coordinates are calculated with a simple mathematical formulae with a negligible error if any.Type: GrantFiled: August 29, 1995Date of Patent: May 12, 1998Assignee: Fujitsu LimitedInventors: Hiroshi Ishikawa, Nobuyasu Yamaguchi, Yasuhide Iwamoto, Atsuo Iida