Patents by Inventor Shunichi Kaizu
Shunichi Kaizu 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: 8388092Abstract: An image forming apparatus includes a print head provided with a plurality of discharge ports, a scanning unit configured to cause the print head to scan the same printing region on a recording medium a number of times, a generation unit configured to generate image forming data for each of scans, based on image information that has been input, and an image forming unit configured to perform image forming by discharging inks from the discharge ports on the recording medium according to the image forming data generated by the generation unit. The generation unit includes a division unit configured to divide the image information, while controlling division coefficients, using each of the discharge ports as the reference based on the division coefficients, and a quantization unit configured to quantize each of image information divided by the division unit.Type: GrantFiled: April 20, 2010Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Shunichi Kaizu, Hisashi Ishikawa
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Patent number: 8140727Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.Type: GrantFiled: May 20, 2011Date of Patent: March 20, 2012Assignee: Canon Kabushiki KaishaInventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
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Publication number: 20110219156Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.Type: ApplicationFiled: May 20, 2011Publication date: September 8, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
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Patent number: 7962678Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.Type: GrantFiled: June 12, 2007Date of Patent: June 14, 2011Assignee: Canon Kabushiki KaishaInventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
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Publication number: 20100271414Abstract: An image forming apparatus includes a print head provided with a plurality of discharge ports, a scanning unit configured to cause the print head to scan the same printing region on a recording medium a number of times, a generation unit configured to generate image forming data for each of scans, based on image information that has been input, and an image forming unit configured to perform image forming by discharging inks from the discharge ports on the recording medium according to the image forming data generated by the generation unit. The generation unit includes a division unit configured to divide the image information, while controlling division coefficients, using each of the discharge ports as the reference based on the division coefficients, and a quantization unit configured to quantize each of image information divided by the division unit.Type: ApplicationFiled: April 20, 2010Publication date: October 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Shunichi Kaizu, Hisashi Ishikawa
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Publication number: 20100223409Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.Type: ApplicationFiled: June 12, 2007Publication date: September 2, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
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Patent number: 7685344Abstract: The remaining time period until the deadline of transfer by a device connected to a bus is measured, the remaining data size to be transferred by the device is detected, and the priority level of the device is set based on the remaining time period and the remaining data size.Type: GrantFiled: October 19, 2006Date of Patent: March 23, 2010Assignee: Canon Kabushiki KaishaInventors: Makoto Fujiwara, Koichi Morishita, Shunichi Kaizu
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Patent number: 7321438Abstract: In an image processing apparatus, connected via an external bus to at least an external controller and an external storage device, input image data is processed by an image processor 2, then processed image data 1 and image data 2 are simultaneously stored into respective areas of an image buffer 4. The image data 1 is read from the image buffer 4 while it is stored in the image buffer, and the read image data 1 is processed by an image processor 5. The image data is outputted through an image output controller 6 and a bus I/F unit 1 to an external storage device 903 via an external bus 101. At this time, the result of processing on frame data by the image processor is preserved in correspondence with output of the image data 1 for one frame, and image processing and output processing on the image data 2 stored in the image buffer, for one frame, is started.Type: GrantFiled: January 18, 2002Date of Patent: January 22, 2008Assignee: Canon Kabushiki KaishaInventor: Shunichi Kaizu
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Publication number: 20070101031Abstract: The remaining time period until the deadline of transfer by a device connected to a bus is measured, the remaining data size to be transferred by the device is detected, and the priority level of the device is set based on the remaining time period and the remaining data size.Type: ApplicationFiled: October 19, 2006Publication date: May 3, 2007Inventors: Makoto Fujiwara, Koichi Morishita, Shunichi Kaizu
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Publication number: 20020097916Abstract: In an image processing apparatus, connected via an external bus to at least an external controller and an external storage device, input image data is processed by an image processor 2, then processed image data 1 and image data 2 are simultaneously stored into respective areas of an image buffer 4. The image data 1 is read from the image buffer 4 while it is stored in the image buffer, and the read image data 1 is processed by an image processor 5. The image data is outputted through an image output controller 6 and a bus I/F unit 1 to an external storage device 903 via an external bus 101. At this time, the result of processing on frame data by the image processor is preserved in correspondence with output of the image data 1 for one frame, and image processing and output processing on the image data 2 stored in the image buffer, for one frame, is started.Type: ApplicationFiled: January 18, 2002Publication date: July 25, 2002Applicant: Canon Kabushiki KaishaInventor: Shunichi Kaizu
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Patent number: 5517224Abstract: A semiconductor device has transistors, each transistor having a first conduction type of a first semiconductor region including a first main electrode region, a second conduction type of second semiconductor region including a channel region which is provided in the first semiconductor region, a second main electrode region provided in the second semiconductor region, a gate electrode on the channel region extending through a gate insulating film between the first and second main electrode regions. A portion of the first main electrode region which contacts the channel region is a high-resistance region. The semiconductor device also has buried-type element isolation regions which prevent the occurrence of latch up and bird's beaks in the device.Type: GrantFiled: June 17, 1993Date of Patent: May 14, 1996Assignee: Canon Kabushiki KaishaInventors: Shunichi Kaizu, Hiroyuki Nakamura, Toshihiko Ichise, Kei Fujita, Seiji Kamei
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Patent number: 5514989Abstract: A driver circuit comprises a current mirror circuit including an output transistor, a load connected to a main electrode of the output transistor, and current supplying device for supplying a current to a control electrode of the output transistor. The output transistor controls a current flowing through the load.Type: GrantFiled: December 21, 1993Date of Patent: May 7, 1996Assignee: Canon Kabushiki KaishaInventors: Toshiaki Sato, Toshihiko Ichise, Keiji Ishizuka, Shunichi Morita, Shunichi Kaizu