Patents by Inventor Hiroshi Yamamizu

Hiroshi Yamamizu 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: 11816233
    Abstract: An apparatus includes a CPU, a CPU boot ROM that stores a program to be executed by the CPU, a secure microcontroller that detects modification of the program, and a secure-microcontroller boot ROM that stores a recovery program for recovering the program in response to the secure microcontroller detecting modification of the program. The secure-microcontroller boot ROM is accessible from the secure microcontroller, and is not accessible from the CPU.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: November 14, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu
  • Publication number: 20220121536
    Abstract: Embodiments of the present disclosure include an information processing apparatus including a processor configured to store an operation history of the information processing apparatus as a log, a first memory configured to store a program to be executed by the processor, a detector configured to detect modification of the program stored in the first memory, a second memory configured to store a recovery program for recovering the program in response to the detector detecting modification of the program, and a third memory configured to store information indicating the modification of the program detected by the detector. The processor stores as the log the information stored in the third memory.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 21, 2022
    Inventor: Hiroshi Yamamizu
  • Publication number: 20220121760
    Abstract: An apparatus includes a CPU, a CPU boot ROM that stores a program to be executed by the CPU, a secure microcontroller that detects modification of the program, and a secure-microcontroller boot ROM that stores a recovery program for recovering the program in response to the secure microcontroller detecting modification of the program. The secure-microcontroller boot ROM is accessible from the secure microcontroller, and is not accessible from the CPU.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 21, 2022
    Inventor: Hiroshi Yamamizu
  • Publication number: 20200329166
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Inventor: Hiroshi Yamamizu
  • Patent number: 10466752
    Abstract: An information processing apparatus which is capable of, when hang-up occurs, eliminating the hang-up state and restoring to a normal state without bothering a user. A first power supply unit supplies power to predetermined devices among a plurality of devices, and a second power supply unit supplies power to the plurality of devices. When startup is done with power being supplied to the predetermined devices, software is started by supplying power to all of the plurality of devices. When the second power supply unit is turned on during the startup, whether or not the software has been normally started is determined. When the software has not been normally started, the software is restarted by carrying out an off-on process in which the plurality of devices are reset, the second power supply unit is turned off, and then the second power supply unit is turned on again.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu
  • Patent number: 10078360
    Abstract: The present invention presents an information processing apparatus capable of having a plurality of power saving states, and a method of controlling the same. The apparatus times a specific packet reception time interval, and select, based on the timed reception time interval, one of the plurality of power saving states into which to transition. If the apparatus satisfies a condition for transitioning into a power saving state, the information processing apparatus transitions to the selected power saving state.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: September 18, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Yamamizu
  • Publication number: 20170126917
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Application
    Filed: January 12, 2017
    Publication date: May 4, 2017
    Inventor: Hiroshi Yamamizu
  • Patent number: 9584686
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: February 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Yamamizu
  • Publication number: 20160306413
    Abstract: The present invention presents an information processing apparatus capable of having a plurality of power saving states, and a method of controlling the same. The apparatus times a specific packet reception time interval, and select, based on the timed reception time interval, one of the plurality of power saving states into which to transition. If the apparatus satisfies a condition for transitioning into a power saving state, the information processing apparatus transitions to the selected power saving state.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 20, 2016
    Inventor: HIROSHI YAMAMIZU
  • Publication number: 20160112593
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Application
    Filed: December 22, 2015
    Publication date: April 21, 2016
    Inventor: Hiroshi Yamamizu
  • Patent number: 9268290
    Abstract: An apparatus configured to operate in a first power state and in a second power state that consumes less power than the first power state. In a case where a predetermined condition is satisfied, when a power-supply-off drive for switching a switch to an off side using a drive unit is executed and if it is detected that a power supply to the apparatus is not cut after executing of the power-supply-off drive, a control unit shifts a power state of the apparatus from the first power state to the second power state.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: February 23, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu
  • Patent number: 9253354
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: February 2, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Yamamizu
  • Publication number: 20150378405
    Abstract: An information processing apparatus which is capable of, when hang-up occurs, eliminating the hang-up state and restoring to a normal state without bothering a user. A first power supply unit supplies power to predetermined devices among a plurality of devices, and a second power supply unit supplies power to the plurality of devices. When startup is done with power being supplied to the predetermined devices, software is started by supplying power to all of the plurality of devices. When the second power supply unit is turned on during the startup, whether or not the software has been normally started is determined. When the software has not been normally started, the software is restarted by carrying out an off-on process in which the plurality of devices are reset, the second power supply unit is turned off, and then the second power supply unit is turned on again.
    Type: Application
    Filed: September 10, 2015
    Publication date: December 31, 2015
    Inventor: Hiroshi YAMAMIZU
  • Patent number: 9158353
    Abstract: An information processing apparatus which is capable of, when hang-up occurs, eliminating the hang-up state and restoring to a normal state without bothering a user. A first power supply unit supplies power to predetermined devices among a plurality of devices, and a second power supply unit supplies power to the plurality of devices. When startup is done with power being supplied to the predetermined devices, software is started by supplying power to all of the plurality of devices. When the second power supply unit is turned on during the startup, whether or not the software has been normally started is determined. When the software has not been normally started, the software is restarted by carrying out an off-on process in which the plurality of devices are reset, the second power supply unit is turned off, and then the second power supply unit is turned on again.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: October 13, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu
  • Patent number: 9146522
    Abstract: In a first power state of an image forming apparatus in which a first power supply unit supplies power to a network I/F but does not supply power to a central processing unit (CPU), if a received packet is a first type packet, a power supply control unit shifts the image forming apparatus to a second power state in which the first power supply unit supplies power to the CPU but the second power supply unit does not supply power to the image forming unit. If the received packet is a second type packet, the power supply control unit shifts the image forming apparatus to a third power state in which the first power supply unit supplies power to the CPU and the second power supply unit supplies power to the image forming unit.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: September 29, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Yamamizu
  • Publication number: 20150153702
    Abstract: An apparatus configured to operate in a first power state and in a second power state that consumes less power than the first power state. In a case where a predetermined condition is satisfied, when a power-supply-off drive for switching a switch to an off side using a drive unit is executed and if it is detected that a power supply to the apparatus is not cut after executing of the power-supply-off drive, a control unit shifts a power state of the apparatus from the first power state to the second power state.
    Type: Application
    Filed: November 25, 2014
    Publication date: June 4, 2015
    Inventor: Hiroshi Yamamizu
  • Publication number: 20150124275
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a control unit configured to control driving of the image forming unit, and a power supply unit configured to, if a factor for shifting from a power saving state to a standby state is detected, supply power to the image forming unit and the control unit. If a first type of factor is detected as the factor in the power saving state, the power supply unit supplies power to the control unit and the image forming unit, and the control unit restricts the driving of the image forming unit. If an instruction to perform a function of forming an image on a sheet is accepted, the control unit cancels restriction of the driving of the image forming unit.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Inventor: Hiroshi Yamamizu
  • Publication number: 20140341604
    Abstract: When a job is received via a LAN and if power for a controller unit is not turned on, a LAN controller of an image forming apparatus turns on a switch and performs an operation to turn on the power for the controller unit. If the power for the controller unit is not turned on even after the operation is performed or if the main switch is turned off, the LAN controller of the image forming apparatus notifies a job sender to connect AC power supply or turn on a main switch.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu
  • Publication number: 20140153022
    Abstract: An electronic apparatus which is capable of executing jobs in an order in which the jobs were received while maximum power consumption is never exceeded. Based on a list stored in a storage unit, whether or not a job planned to be executed by the electronic apparatus is next on a waiting list is determined. Completion notification indicating that the job has been completed is received from one of at least one external apparatus. Power consumption is obtained from all of the at least one external apparatus when the job is next on a waiting list, and the completion notification is received. The job is executed when a sum of total power consumption of the at least one external apparatus and power consumed when the electronic apparatus executes the job is smaller than maximum power consumption determined in advance.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 5, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi YAMAMIZU
  • Publication number: 20140072323
    Abstract: In a first power state of an image forming apparatus in which a first power supply unit supplies power to a network I/F but does not supply power to a central processing unit (CPU), if a received packet is a first type packet, a power supply control unit shifts the image forming apparatus to a second power state in which the first power supply unit supplies power to the CPU but the second power supply unit does not supply power to the image forming unit. If the received packet is a second type packet, the power supply control unit shifts the image forming apparatus to a third power state in which the first power supply unit supplies power to the CPU and the second power supply unit supplies power to the image forming unit.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Yamamizu