Patents by Inventor Ritsuo Machii
Ritsuo Machii 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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Control of coordinate input apparatus based on light distribution and moving amounts of sensor units
Patent number: 9377897Abstract: The sensor unit of each of a first bar housing unit and second bar housing unit is moved. The moving amount is measured and stored. The distribution of a light amount received by the light receiving unit of the sensor unit of each of the first bar housing unit and second bar housing unit is detected, and whether the moving amount is appropriate is determined based on the detection result. A calculation value used when the coordinates of the pointed position in the coordinate input effective region are calculated based on variations of the light amount distribution is corrected by using the moving amount stored when it is determined that the moving amount is appropriate.Type: GrantFiled: July 23, 2013Date of Patent: June 28, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Ritsuo Machii, Katsuyuki Kobayashi -
Patent number: 9063618Abstract: According to one aspect of the invention, a coordinate input apparatus for calculating a position of an object positioned on an input area comprises: a light projecting unit; retroreflecting members arranged along two opposite sides of a rectangular area including the input area, and having a reflecting surface which reflects the light emitted by the light projecting unit; a light receiving unit; and a calculation unit configured to calculate the position of the object based on a measurement result from the light receiving unit, wherein a set of the light projecting unit and the light receiving unit arranged adjacent to the retroreflecting member to sandwich the retroreflecting member in a direction perpendicular to a surface of the input area are positioned in at least two portions of each of the retroreflecting members arranged on the two opposite sides.Type: GrantFiled: June 7, 2011Date of Patent: June 23, 2015Assignee: CANON KABUSHIKI KAISHAInventor: Ritsuo Machii
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Patent number: 8982102Abstract: A coordinate input apparatus includes a light projecting unit configured to project light parallelly to an effective coordinate input region, a reflection unit configured to retroreflect the light projected by the light projecting unit, and a light receiving unit configured to receive light from the light projecting unit or the reflection unit. The coordinate input apparatus includes a moving unit configured to move a set of the light projecting unit, light receiving unit, and reflection unit in a direction perpendicular to the effective coordinate input region in order to ensure a light amount with which a pointed position in the effective coordinate input region can be calculated based on variations of a light amount distribution obtained from the light receiving unit.Type: GrantFiled: February 25, 2013Date of Patent: March 17, 2015Assignee: Canon Kabushiki KaishaInventors: Hirokuni Takano, Yuichiro Yoshimura, Katsuyuki Kobayashi, Ritsuo Machii, Takuto Kawahara, Takayuki Hashimoto, Naoki Umemura, Hajime Sato, Takayuki Komine, Akihiro Matsushita
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Patent number: 8941622Abstract: A coordinate input apparatus includes a first housing and a second housing each of which incorporate at least two sensor units each including one of the light projecting unit and one of the light receiving unit. A pointed position to an effective coordinate input region is calculated based on variations of a light amount distribution obtained from the light receiving units of each of the first and second housings. In each of the first and second housings, the field range of a light receiving unit is almost parallel to the effective coordinate input region, the optical axis direction of the light receiving unit is a direction perpendicular to a line segment connecting the barycenters of at least two sensor units in a single housing, and the field range is set to be asymmetric to the optical axis direction.Type: GrantFiled: March 14, 2013Date of Patent: January 27, 2015Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Kobayashi, Hirokuni Takano, Yuichiro Yoshimura, Hajime Sato, Ritsuo Machii, Takuto Kawahara, Takayuki Hashimoto, Takayuki Komine, Akihiro Matsushita, Naoki Umemura
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Publication number: 20140034807Abstract: The sensor unit of each of a first bar housing unit and second bar housing unit is moved. The moving amount is measured and stored. The distribution of a light amount received by the light receiving unit of the sensor unit of each of the first bar housing unit and second bar housing unit is detected, and whether the moving amount is appropriate is determined based on the detection result. A calculation value used when the coordinates of the pointed position in the coordinate input effective region are calculated based on variations of the light amount distribution is corrected by using the moving amount stored when it is determined that the moving amount is appropriate.Type: ApplicationFiled: July 23, 2013Publication date: February 6, 2014Applicant: Canon Kabushiki KaishaInventors: Ritsuo Machii, Katsuyuki Kobayashi
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Publication number: 20130257814Abstract: A coordinate input apparatus includes a first housing and a second housing each of which incorporate at least two sensor units each including one of the light projecting unit and one of the light receiving unit. A pointed position to an effective coordinate input region is calculated based on variations of a light amount distribution obtained from the light receiving units of each of the first and second housings. In each of the first and second housings, the field range of a light receiving unit is almost parallel to the effective coordinate input region, the optical axis direction of the light receiving unit is a direction perpendicular to a line segment connecting the barycenters of at least two sensor units in a single housing, and the field range is set to be asymmetric to the optical axis direction.Type: ApplicationFiled: March 14, 2013Publication date: October 3, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Kobayashi, Hirokuni Takano, Yuichiro Yoshimura, Hajime Sato, Ritsuo Machii, Takuto Kawahara, Takayuki Hashimoto, Takayuki Komine, Akihiro Matsushita, Naoki Umemura
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Publication number: 20130234955Abstract: A coordinate input apparatus includes a light projecting unit configured to project light parallelly to an effective coordinate input region, a reflection unit configured to retroreflect the light projected by the light projecting unit, and a light receiving unit configured to receive light from the light projecting unit or the reflection unit. The coordinate input apparatus includes a moving unit configured to move a set of the light projecting unit, light receiving unit, and reflection unit in a direction perpendicular to the effective coordinate input region in order to ensure a light amount with which a pointed position in the effective coordinate input region can be calculated based on variations of a light amount distribution obtained from the light receiving unit.Type: ApplicationFiled: February 25, 2013Publication date: September 12, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Hirokuni Takano, Yuichiro Yoshimura, Katsuyuki Kobayashi, Ritsuo Machii, Takuto Kawahara, Takayuki Hashimoto, Naoki Umemura, Hajime Sato, Takayuki Komine, Akihiro Matsushita
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Publication number: 20110304535Abstract: According to one aspect of the invention, a coordinate input apparatus for calculating a position of an object positioned on an input area comprises: a light projecting unit; retroreflecting members arranged along two opposite sides of a rectangular area including the input area, and having a reflecting surface which reflects the light emitted by the light projecting unit; a light receiving unit; and a calculation unit configured to calculate the position of the object based on a measurement result from the light receiving unit, wherein a set of the light projecting unit and the light receiving unit arranged adjacent to the retroreflecting member to sandwich the retroreflecting member in a direction perpendicular to a surface of the input area are positioned in at least two portions of each of the retroreflecting members arranged on the two opposite sides.Type: ApplicationFiled: June 7, 2011Publication date: December 15, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Ritsuo Machii
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Patent number: 7864436Abstract: A projection unit is mounted on a projection magnification correcting member, and the projection magnification correcting member includes a first member and a second member. The first member includes a first correction mechanism for correction in a direction parallel to a central light ray, and is supported by a housing. The second member includes a second correction mechanism for correction in a direction parallel to a normal line to an image plane enlarged and projected from the projection unit without passing through a reflection mirror, and is supported by the first member.Type: GrantFiled: March 6, 2008Date of Patent: January 4, 2011Assignee: Canon Kabushiki KaishaInventor: Ritsuo Machii
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Publication number: 20100296686Abstract: A speaker apparatus includes a speaker unit arranged to output sound to the exterior of the speaker apparatus via an opening; an enclosure containing the speaker unit; and a protection units, supported by the enclosure, for protecting the speaker unit, wherein the protection units includes a protection member for at least partially covering the opening, and wherein the apparatus comprises moving unit for changing the distance between the enclosure and the protection units and wherein the protection units is configured such that the position of the protection member changes with respect to the opening in accordance with a change in the distance between the enclosure and the protection units.Type: ApplicationFiled: May 13, 2010Publication date: November 25, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Ritsuo Machii, Masahiro Ando
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Publication number: 20080231932Abstract: Provided is a rear projection type display apparatus having a structure capable of performing projection magnification correction with a small depth. A projection unit is mounted on a projection magnification correcting member, and the projection magnification correcting member includes a first member and a second member. The first member includes a first correction mechanism for correction in a direction parallel to a central light ray, and is supported by a housing. The second member includes a second correction mechanism for correction in a direction parallel to a normal line to an image plane enlarged and projected from the projection unit without passing through a reflection mirror, and is supported by the first member.Type: ApplicationFiled: March 6, 2008Publication date: September 25, 2008Applicant: CANON KABUSHIKI KAISHAInventor: Ritsuo Machii
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Patent number: 6089730Abstract: An illumination apparatus includes a lamp, and a holding member for rotatably holding the lamp about its optical axis as a rotational axis. An projector includes the illumination apparatus, a first optical system for separating white light from the illumination apparatus into light of red, green and blue, a first panel for modulating the light of red per each pixel, a second panel for modulating the light of green per each pixel, a third panel for modulating the light of blue per each pixel, a projection lens, and a second optical system for superimposing the modulated light of red, green and blue on a display surface, such as a screen, in cooperation with the projection lens.Type: GrantFiled: October 23, 1998Date of Patent: July 18, 2000Assignee: Canon Kabushiki KaishaInventor: Ritsuo Machii
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Patent number: 5169247Abstract: An image recording apparatus for recording an image on a recording sheet includes a recording head for recording the image on the recording sheet, a carriage for holding the recording head, the carriage being reciprocated along a convey route of the recording sheet, a motor for applying a drive force for conveying the recording sheet and a drive force for causing the recording head to move between a recording position where the recording head performs image recording and a retracted position where the recording head is retracted from the recording position, and a control unit for controlling the motor to switch between conveying the recording sheet and moving the recording head in accordance with movement of the carriage.Type: GrantFiled: September 19, 1991Date of Patent: December 8, 1992Assignee: Canon Kabushiki KaishaInventors: Shinya Asano, Noboru Shimoyama, Ritsuo Machii
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Patent number: 5152625Abstract: A recording device in which an ink ribbon is used and recording is performed shifting the ribbon in the direction of the width of the ribbon and having a sensor for detecting the end of an effective portion of the ribbon. Using the end sensor, the vertical position of the region of the ribbon used for recording is detected.Type: GrantFiled: November 25, 1991Date of Patent: October 6, 1992Assignee: Canon Kabushiki KaishaInventor: Ritsuo Machii