Patents by Inventor Yuta Hojo
Yuta Hojo 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: 11503023Abstract: A first authentication apparatus obtains a modification restriction parameter which is stored in a second authentication apparatus and which indicates a number of times a mutual authentication pair modification is possible or a number of times modification has been executed. The first authentication apparatus transmits to the second authentication apparatus authentication information corresponding to the modification restriction parameter. The second authentication apparatus receives the authentication information from the first authentication apparatus. The second authentication apparatus determines whether or not the received authentication information is authentication information for permitting the mutual authentication pair modification. In a case where the received authentication information is authentication information that permits the mutual authentication pair modification, the second authentication apparatus and the first authentication apparatus form a mutual authentication pair.Type: GrantFiled: December 29, 2020Date of Patent: November 15, 2022Assignee: Canon Kabushiki KaishaInventor: Yuta Hojo
-
Patent number: 11494481Abstract: Each of the authentication apparatus and the authentication target device holds the last piece of authentication information subjected to an authentication process. When the authentication target device is reconnected to the authentication apparatus, the authentication apparatus collates the authentication information held in the authentication apparatus with the authentication information read out of the authentication target device. The authentication apparatus determines, based on the collation result, whether or not the authentication target device has been authenticated by a different authentication apparatus.Type: GrantFiled: May 4, 2020Date of Patent: November 8, 2022Assignee: Canon Kabushiki KaishaInventor: Yuta Hojo
-
Patent number: 11434098Abstract: A sheet sorting device includes three or more trays including a predetermined tray detachable from an apparatus main body and a tray different from the predetermined tray, a discharge unit to discharge a sheet to any one of the three or more trays, a control unit, and a tray detection unit to detect that the predetermined tray is detached from the apparatus main body. The control unit sets a sheet discharge destination such that a sheet conforming to a preset condition is discharged to the predetermined tray through the discharge unit. Where the tray detection unit detects that the predetermined tray is detached from the apparatus main body, the control unit sets a sheet discharge destination that has been set to the predetermined tray to the tray different from the predetermined tray based on a state of each of the trays other than the detached predetermined tray.Type: GrantFiled: December 5, 2018Date of Patent: September 6, 2022Assignee: Canon Kabushiki KaishaInventors: Yuta Hojo, Genki Takahashi, Kazuhisa Sato
-
Publication number: 20210218738Abstract: A first authentication apparatus obtains a modification restriction parameter which is stored in a second authentication apparatus and which indicates a number of times a mutual authentication pair modification is possible or a number of times modification has been executed. The first authentication apparatus transmits to the second authentication apparatus authentication information corresponding to the modification restriction parameter. The second authentication receives the authentication information from the first authentication apparatus. The second authentication apparatus determines whether or not the received authentication information is authentication information for permitting the mutual authentication pair modification. In a case where the received authentication information is authentication information that permits the mutual authentication pair modification, the second authentication apparatus and the first authentication apparatus form a mutual authentication pair.Type: ApplicationFiled: December 29, 2020Publication date: July 15, 2021Inventor: Yuta Hojo
-
Publication number: 20200356657Abstract: Each of the authentication apparatus and the authentication target device holds the last piece of authentication information subjected to an authentication process. When the authentication target device is reconnected to the authentication apparatus, the authentication apparatus collates the authentication information held in the authentication apparatus with the authentication information read out of the authentication target device. The authentication apparatus determines, based on the collation result, whether or not the authentication target device has been authenticated by a different authentication apparatus.Type: ApplicationFiled: May 4, 2020Publication date: November 12, 2020Inventor: Yuta Hojo
-
Publication number: 20190193981Abstract: A sheet sorting device includes three or more trays including a predetermined tray detachable from an apparatus main body and a tray different from the predetermined tray, a discharge unit to discharge a sheet to any one of the three or more trays, a control unit, and a tray detection unit to detect that the predetermined tray is detached from the apparatus main body. The control unit sets a sheet discharge destination such that a sheet conforming to a preset condition is discharged to the predetermined tray through the discharge unit. Where the tray detection unit detects that the predetermined tray is detached from the apparatus main body, the control unit sets a sheet discharge destination that has been set to the predetermined tray to the tray different from the predetermined tray based on a state of each of the trays other than the detached predetermined tray.Type: ApplicationFiled: December 5, 2018Publication date: June 27, 2019Inventors: Yuta Hojo, Genki Takahashi, Kazuhisa Sato
-
Patent number: 10329106Abstract: A sheet feeding device includes a stacking portion, a first roller, a second roller, a third roller rotatable to provide peripheral movement in a predetermined direction and to provide peripheral movement in a direction opposite to the predetermined direction, a detecting unit, a driving unit for executing a feeding operation by the first roller, and a control unit for providing an instruction to the driving unit so as to continue or stop the feeding operation. The predetermined rotational frequency is larger than 0 and is smaller than a rotational frequency of the third roller in a period in which the third roller is rotated in the predetermined direction in a state in which a single recording material is fed to the nip.Type: GrantFiled: December 6, 2016Date of Patent: June 25, 2019Assignee: Canon Kabushiki KaishaInventors: Atsushi Kawarago, Fumiaki Mizuno, Yuta Hojo, Takao Nada
-
Patent number: 10065819Abstract: An image forming apparatus includes feeding, conveying, and separating members, and detecting, image forming, and control units. The feeding member feeds a recording material placed on a tray. The separating member and the conveying member separate recording materials at a nip. The detecting unit detects that the recording materials have been fed to the nip. The image forming unit forms an image on fed recording material. The control unit switches between a first and second control. Under the first control, the feeding member starts feeding a recording material placed on the tray, and ends feeding before a recording material trailing end passes through the feeding member. Under the second control, the feeding member starts feeding a recording material placed on the tray, and ends feeding after a recording material trailing end passes through the feeding member when the detection unit detects that the recording materials are fed to the nip.Type: GrantFiled: March 13, 2017Date of Patent: September 4, 2018Assignee: Canon Kabushiki KaishaInventors: Ryuhei Shoji, Yuta Hojo, Shingo Harada
-
Patent number: 10005629Abstract: An image forming apparatus may comprise a first feeding unit, a second feeding unit, a feeding control unit, an image forming unit, a reversal unit, a post-processing unit, and a post-processing control unit. Based on a post-processing time amount notified from the post-processing control unit, the feeding control unit does not allow a sheet to wait in the reversal unit and adjusts a feed time of a sheet fed from the first feeding unit so that the sheet fed from the first feeding unit does not contact with a sheet waiting in the second feeding unit.Type: GrantFiled: November 16, 2016Date of Patent: June 26, 2018Assignee: Canon Kabushiki KaishaInventor: Yuta Hojo
-
Patent number: 9944480Abstract: An image forming apparatus includes an accommodation unit, feeding, conveying, and separating members, and detecting, control, image forming, and regulating units. The conveying member conveys a fed recording material. The separating member forms a nip and separates recording materials. The detecting unit detects that the recording material has been fed to the nip. The feeding member starts feeding an accommodated recording material and, where a recording material is fed to the nip, causes the feeding to be finished. An image is formed on a fed recording material. The regulating unit regulates an end on an upstream side. The control unit measures a period from a recording material feeding to detection that a recording material is fed to the nip. Based on the measured period, information is output indicating that a position of the regulating unit is deviated from a position according to a size of the accommodated recording materials.Type: GrantFiled: March 8, 2017Date of Patent: April 17, 2018Assignee: Canon Kabushiki KaishaInventors: Yuya Hirano, Fumiaki Mizuno, Yuta Hojo, Atsushi Kawarago
-
Publication number: 20170267475Abstract: An image forming apparatus includes an accommodation unit, feeding, conveying, and separating members, and detecting, control, image forming, and regulating units. The conveying member conveys a fed recording material. The separating member forms a nip and separates recording materials. The detecting unit detects that the recording material has been fed to the nip. The feeding member starts feeding an accommodated recording material and, where a recording material is fed to the nip, causes the feeding to be finished. An image is formed on a fed recording material. The regulating unit regulates an end on an upstream side. The control unit measures a period from a recording material feeding to detection that a recording material is fed to the nip. Based on the measured period, information is output indicating that a position of the regulating unit is deviated from a position according to a size of the accommodated recording materials.Type: ApplicationFiled: March 8, 2017Publication date: September 21, 2017Inventors: Yuya Hirano, Fumiaki Mizuno, Yuta Hojo, Atsushi Kawarago
-
Publication number: 20170269533Abstract: An image forming apparatus includes feeding, conveying, and separating members, and detecting, image forming, and control units. The feeding member feeds a recording material placed on a tray. The separating member and the conveying member separate recording materials at a nip. The detecting unit detects that the recording materials have been fed to the nip. The image forming unit forms an image on fed recording material. The control unit switches between a first and second control. Under the first control, the feeding member starts feeding a recording material placed on the tray, and ends feeding before a recording material trailing end passes through the feeding member. Under the second control, the feeding member starts feeding a recording material placed on the tray, and ends feeding after a recording material trailing end passes through the feeding member when the detection unit detects that the recording materials are fed to the nip.Type: ApplicationFiled: March 13, 2017Publication date: September 21, 2017Inventors: Ryuhei Shoji, Yuta Hojo, Shingo Harada
-
Patent number: 9749479Abstract: A state change of a status occurred during a communication interrupted state is stored as a state change status. Thus, a video controller 102 can recognize the change of the status during a period when communication between the video controller 102 and an engine control unit 103 is interrupted, based on the state change status.Type: GrantFiled: October 15, 2012Date of Patent: August 29, 2017Assignee: Canon Kabushiki KaishaInventor: Yuta Hojo
-
Publication number: 20170176902Abstract: An image forming apparatus may comprise a first feeding unit, a second feeding unit, a feeding control unit, an image forming unit, a reversal unit, a post-processing unit, and a post-processing control unit. Based on a post-processing time amount notified from the post-processing control unit, the feeding control unit does not allow a sheet to wait in the reversal unit and adjusts a feed time of a sheet fed from the first feeding unit so that the sheet fed from the first feeding unit does not contact with a sheet waiting in the second feeding unit.Type: ApplicationFiled: November 16, 2016Publication date: June 22, 2017Inventor: Yuta Hojo
-
Publication number: 20170166411Abstract: A sheet feeding device includes a stacking portion, a first roller, a second roller, a third roller rotatable to provide peripheral movement in a predetermined direction and to provide peripheral movement in a direction opposite to the predetermined direction, a detecting unit, a driving unit for executing a feeding operation by the first roller, and a control unit for providing an instruction to the driving unit so as to continue or stop the feeding operation. The predetermined rotational frequency is larger than 0 and is smaller than a rotational frequency of the third roller in a period in which the third roller is rotated in the predetermined direction in a state in which a single recording material is fed to the nip.Type: ApplicationFiled: December 6, 2016Publication date: June 15, 2017Inventors: Atsushi Kawarago, Fumiaki Mizuno, Yuta Hojo, Takao Nada
-
Patent number: 9141046Abstract: An apparatus is capable of switching between a mode in which a first resistance heating element and a second resistance heating element are connected in series and a mode in which they are connected in parallel. When a temperature increase rate detected by a temperature detection unit is smaller than a threshold rate although a current detected by a current detection unit is greater than a threshold current, a notification of a failure is issued.Type: GrantFiled: June 17, 2014Date of Patent: September 22, 2015Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Shimura, Atsushi Kawarago, Yuta Hojo, Kei Sato
-
Publication number: 20140300932Abstract: A state change of a status occurred during a communication interrupted state is stored as a state change status. Thus, a video controller 102 can recognize the change of the status during a period when communication between the video controller 102 and an engine control unit 103 is interrupted, based on the state change status.Type: ApplicationFiled: October 15, 2012Publication date: October 9, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Yuta Hojo
-
Publication number: 20140294416Abstract: An apparatus is capable of switching between a mode in which a first resistance heating element and a second resistance heating element are connected in series and a mode in which they are connected in parallel. When a temperature increase rate detected by a temperature detection unit is smaller than a threshold rate although a current detected by a current detection unit is greater than a threshold current, a notification of a failure is issued.Type: ApplicationFiled: June 17, 2014Publication date: October 2, 2014Inventors: Yasuhiro Shimura, Atsushi Kawarago, Yuta Hojo, Kei Sato
-
Patent number: 8787780Abstract: An apparatus is capable of switching between a mode in which a first resistance heating element and a second resistance heating element are connected in series and a mode in which they are connected in parallel. When a temperature increase rate detected by a temperature detection unit is smaller than a threshold rate although a current detected by a current detection unit is greater than a threshold current, a notification of a failure is issued.Type: GrantFiled: December 1, 2011Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Shimura, Atsushi Kawarago, Yuta Hojo, Kei Sato
-
Publication number: 20120148273Abstract: An apparatus is capable of switching between a mode in which a first resistance heating element and a second resistance heating element are connected in series and a mode in which they are connected in parallel. When a temperature increase rate detected by a temperature detection unit is smaller than a threshold rate although a current detected by a current detection unit is greater than a threshold current, a notification of a failure is issued.Type: ApplicationFiled: December 1, 2011Publication date: June 14, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yasuhiro Shimura, Atsushi Kawarago, Yuta Hojo, Kei Sato