Patents by Inventor Yuichi Yanagiwara
Yuichi Yanagiwara 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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Publication number: 20230353691Abstract: An image acquisition apparatus comprising pixels each including sub-pixels, the apparatus comprising signal holding units for holding signals from the sub-pixels, and a signal processing unit for acquiring and processing each of the signals from the signal holding units, wherein the signal processing unit includes a first mode of amplifying, by a predetermined amplification factor, the signals held by the signal holding units and individually outputting the signals, and a second mode of amplifying, by amplification factors at least some of which are different from the amplification factor in the first mode, the signals held by the signal holding units to add and output the signals.Type: ApplicationFiled: April 20, 2023Publication date: November 2, 2023Inventors: DAIKI MAEDA, KIMIHIKO FUKAWA, TAKASHI SAKAI, YUICHI YANAGIWARA
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Patent number: 11647142Abstract: An image reading apparatus comprises a first reading unit configured to output an analog signal by reading an original, a second reading unit different from the first reading unit, a conversion unit configured to convert analog signals outputted from the first reading unit and the second reading unit to digital signals, a wire connection control unit configured to control wire connection between the first reading unit and the second reading unit, and the conversion unit, and an output control unit configured to control an output of an analog signal from the first reading unit.Type: GrantFiled: September 24, 2021Date of Patent: May 9, 2023Assignee: Canon Kabushiki KaishaInventors: Yuichi Yanagiwara, Kimihiko Fukawa, Takashi Sakai, Norikazu Honda
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Publication number: 20220103712Abstract: An image reading apparatus comprises a first reading unit configured to output an analog signal by reading an original, a second reading unit different from the first reading unit, a conversion unit configured to convert analog signals outputted from the first reading unit and the second reading unit to digital signals, a wire connection control unit configured to control wire connection between the first reading unit and the second reading unit, and the conversion unit, and an output control unit configured to control an output of an analog signal from the first reading unit.Type: ApplicationFiled: September 24, 2021Publication date: March 31, 2022Inventors: Yuichi Yanagiwara, Kimihiko Fukawa, Takashi Sakai, Norikazu Honda
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Patent number: 10721372Abstract: An image reading apparatus that controls relative positions of a carriage and a document in a first direction using a motor, so as to read an image of the document on a line by line basis, the carriage being mounted with an image sensor and a light source. The image reading apparatus detects an amount of movement caused by the motor in the first direction and generates a first trigger signal in response to input of a synchronization signal generated in accordance with the detected amount of movement, the first trigger signal instructing to start accumulation of charge in the image sensor, and, after a predetermined amount of time since the synchronization signal used for generating the first trigger signal is input, generates a second trigger signal, the second trigger signal instructing to end accumulation of the charge being accumulated in the image sensor.Type: GrantFiled: September 28, 2018Date of Patent: July 21, 2020Assignee: Canon Kabushiki KaishaInventor: Yuichi Yanagiwara
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Patent number: 10554844Abstract: An image scanning apparatus determines whether there is an influence of external light from the outside of the image scanning apparatus on scanning; decides a correction value corresponding to each of a plurality of sensors based on received light amounts of at least some of the plurality of sensors; and corrects, using the correction value corresponding to each of the plurality of sensors and decided, data corresponding to a received light amount of each of the plurality of sensors when scanning the original, wherein if it is determined that there is the influence of the external light, the image scanning apparatus decides the correction value corresponding to a first sensor and the correction value corresponding to a second sensor arranged at a position that is readily influenced by the external light based on the received light amount of the first sensor.Type: GrantFiled: February 20, 2019Date of Patent: February 4, 2020Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Hosogoshi, Miho Funabashi, Norikazu Honda, Masataka Iura, Yuichi Yanagiwara
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Publication number: 20190281179Abstract: An image scanning apparatus determines whether there is an influence of external light from the outside of the image scanning apparatus on scanning; decides a correction value corresponding to each of a plurality of sensors based on received light amounts of at least some of the plurality of sensors; and corrects, using the correction value corresponding to each of the plurality of sensors and decided, data corresponding to a received light amount of each of the plurality of sensors when scanning the original, wherein if it is determined that there is the influence of the external light, the image scanning apparatus decides the correction value corresponding to a first sensor and the correction value corresponding to a second sensor arranged at a position that is readily influenced by the external light based on the received light amount of the first sensor.Type: ApplicationFiled: February 20, 2019Publication date: September 12, 2019Inventors: Hiroyuki Hosogoshi, Miho Funabashi, Norikazu Honda, Masataka Iura, Yuichi Yanagiwara
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Publication number: 20190116286Abstract: An image reading apparatus that controls relative positions of a carriage and a document in a first direction using a motor, so as to read an image of the document on a line by line basis, the carriage being mounted with an image sensor and a light source. The image reading apparatus detects an amount of movement caused by the motor in the first direction and generates a first trigger signal in response to input of a synchronization signal generated in accordance with the detected amount of movement, the first trigger signal instructing to start accumulation of charge in the image sensor, and, after a predetermined amount of time since the synchronization signal used for generating the first trigger signal is input, generates a second trigger signal, the second trigger signal instructing to end accumulation of the charge being accumulated in the image sensor.Type: ApplicationFiled: September 28, 2018Publication date: April 18, 2019Inventor: Yuichi Yanagiwara
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Patent number: 10070015Abstract: An image reading apparatus according to an embodiment of the present invention includes: an image sensor to read a document; a movement unit configured to relatively move the document and the image sensor by using a motor as a drive source; an output unit configured to output data of a plurality of colors based on accumulated light-receiving signals by accumulating the light-receiving signals from the image sensor for each color in order for each line in a direction of the movement based on an encoder pulse output from an encoder in accordance with rotation of the motor; and a correction unit configured to perform shading correction for each piece of data of the plurality of colors output by the output unit by using a correction value to correct influence on data of the plurality of colors due to a dark current in the image sensor based on shading data.Type: GrantFiled: May 31, 2017Date of Patent: September 4, 2018Assignee: CANON KABUSHIKI KAISHAInventor: Yuichi Yanagiwara
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Publication number: 20170353629Abstract: An image reading apparatus according to an embodiment of the present invention includes: an image sensor to read a document; a movement unit configured to relatively move the document and the image sensor by using a motor as a drive source; an output unit configured to output data of a plurality of colors based on accumulated light-receiving signals by accumulating the light-receiving signals from the image sensor for each color in order for each line in a direction of the movement based on an encoder pulse output from an encoder in accordance with rotation of the motor; and a correction unit configured to perform shading correction for each piece of data of the plurality of colors output by the output unit by using a correction value to correct influence on data of the plurality of colors due to a dark current in the image sensor based on shading data.Type: ApplicationFiled: May 31, 2017Publication date: December 7, 2017Inventor: Yuichi Yanagiwara
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Patent number: 9621753Abstract: An apparatus includes an image sensor that has a plurality of sensor chips having photoelectric conversion elements and that outputs pixel signals from a plurality of output channels; identifying means that identifies a width of a document to be read by the image sensor; and signal control means that controls signals to be output from the image sensor. In the image sensor, different sensor chips at an interval of the number of channels of the output channels are connected to each output channel, and the signal control means controls output of a pixel signal of each sensor chip based on the identified document width.Type: GrantFiled: December 11, 2015Date of Patent: April 11, 2017Assignee: CANON KABUSHIKI KAISHAInventor: Yuichi Yanagiwara
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Publication number: 20160191736Abstract: An apparatus includes an image sensor that has a plurality of sensor chips having photoelectric conversion elements and that outputs pixel signals from a plurality of output channels; identifying means that identifies a width of a document to be read by the image sensor; and signal control means that controls signals to be output from the image sensor. In the image sensor, different sensor chips at an interval of the number of channels of the output channels are connected to each output channel, and the signal control means controls output of a pixel signal of each sensor chip based on the identified document width.Type: ApplicationFiled: December 11, 2015Publication date: June 30, 2016Inventor: Yuichi Yanagiwara