Patents by Inventor Keito SAWADA

Keito SAWADA 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: 11924554
    Abstract: An imaging system (100) includes an imaging unit (140) configured to capture an image of a target object while the imaging unit (140) being mounted on a movable apparatus (500); and an exposure condition determination unit (161) configured to determine any one of a fixed exposure condition and an automatic exposure (AE) condition, as an exposure condition, based on a distance detected between the movable apparatus (500) and the target object.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: March 5, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Manabu Yamada, Yuji Yamanaka, Taro Kikuchi, Keito Sawada, Shusaku Takasu
  • Publication number: 20220201206
    Abstract: An imaging system (100) includes an imaging unit (140) configured to capture an image of a target object while the imaging unit (140) being mounted on a movable apparatus (500); and an exposure condition determination unit (161) configured to determine any one of a fixed exposure condition and an automatic exposure (AE) condition, as an exposure condition, based on a distance detected between the movable apparatus (500) and the target object.
    Type: Application
    Filed: May 14, 2020
    Publication date: June 23, 2022
    Inventors: Manabu YAMADA, Yuji YAMANAKA, Taro KIKUCHI, Keito SAWADA, Shusaku TAKASU
  • Patent number: 11004215
    Abstract: Disclosed is an image processing apparatus that includes one or more processors; and a memory, the memory storing instructions. When executed by the one or more processors, cause the one or more processors to: generate distribution data indicating a frequency distribution of horizontal distance values of a range image based on the range image having pixel values according to distance of an object in a plurality of captured images; predict a predicted position of the object in the distribution data with respect to a range image of a current frame, based on the distribution data with respect to range images of a plurality of previous frames; and continue tracking of the object, based on a similarity between a region of the object in a previous frame and a region in the current frame with respect to the predicted position of the object.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: May 11, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Genki Watanabe, Keito Sawada, Hiroyoshi Sekiguchi
  • Patent number: 10984509
    Abstract: Disclosed is an image processing apparatus that includes one or more processors; and a memory storing instructions, which when executed by the one or more processors, cause the one or more processors to: generate distribution data indicating a frequency distribution of horizontal distance values of a range image based on the range image having pixel values according to distance of an object in a plurality of captured images; detect an object based on the distribution data with respect to a range image; predict a predicted position of the object in a current frame based on the distribution data with respect to range images of a plurality of previous frames; and integrate a plurality of objects detected by the detector based on the predicted position to track an integrated object in subsequent frames.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 20, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Genki Watanabe, Hiroyoshi Sekiguchi, Soichiro Yokota, Seiya Amano, Yuu Yamada, Keito Sawada
  • Publication number: 20180330481
    Abstract: Disclosed is an image processing apparatus that includes one or more processors; and a memory storing instructions, which when executed by the one or more processors, cause the one or more processors to: generate distribution data indicating a frequency distribution of horizontal distance values of a range image based on the range image having pixel values according to distance of an object in a plurality of captured images; detect an object based on the distribution data with respect to a range image; predict a predicted position of the object in a current frame based on the distribution data with respect to range images of a plurality of previous frames; and integrate a plurality of objects detected by the detector based on the predicted position to track an integrated object in subsequent frames.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Inventors: Genki WATANABE, Hiroyoshi Sekiguchi, Soichiro Yokota, Seiya Amano, Yuu Yamada, Keito Sawada
  • Publication number: 20180330509
    Abstract: Disclosed is an image processing apparatus that includes one or more processors; and a memory, the memory storing instructions. When executed by the one or more processors, cause the one or more processors to: generate distribution data indicating a frequency distribution of horizontal distance values of a range image based on the range image having pixel values according to distance of an object in a plurality of captured images; predict a predicted position of the object in the distribution data with respect to a range image of a current frame, based on the distribution data with respect to range images of a plurality of previous frames; and continue tracking of the object, based on a similarity between a region of the object in a previous frame and a region in the current frame with respect to the predicted position of the object.
    Type: Application
    Filed: July 24, 2018
    Publication date: November 15, 2018
    Inventors: Genki Watanabe, Keito Sawada, Hiroyoshi Sekiguchi
  • Patent number: 9063736
    Abstract: A communication device that has a normal state and a standby state and that does not permit change of a link rate in the standby state includes: a connecting unit that connects the communication device to a network; a detecting unit that detects traffic at the connecting unit in the network; and a control unit that performs transition processing from the normal state to the standby state when the detecting unit does not detect the traffic for a first period while the communication device is in the normal state. When the control unit is connected to the network by the connecting unit at a first link rate and the detecting unit does not detect the traffic for a second period that is shorter than the first period, the control unit changes the link rate to a second link rate that is lower than the first link rate.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 23, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventor: Keito Sawada
  • Patent number: 8738999
    Abstract: According to an embodiment, an information processing apparatus includes: a receiving unit that receives a fragment packet; an extracting unit that extracts checksum information of which packet has not been subjected to the fragmentation process, and causes the checksum information to be stored in a checksum storage unit; a calculating unit that performs a checksum calculation on each of the plurality of received fragment packets, integrates a calculation result of each fragment packet, and causes an integrated calculation result to be stored in a calculation result storage unit; and a determining unit that determines whether or not there is an error in a packet obtained as a result of combining based on the integrated calculation result stored and the checksum information stored.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: May 27, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Keito Sawada
  • Publication number: 20130073107
    Abstract: A network apparatus includes: a selection unit that selects a power supply for supplying electric power to a load apparatus from among a first power supply stably supplying a certain amount of electric power and a second power supply that is a power accumulating unit for accumulating electric power generated by natural energy, in accordance with a transition state of the load apparatus and an amount of accumulated electric power in the power accumulating unit; and a supply unit that supplies electric power input from the first power supply or the second power supply selected by the selection unit to the load apparatus via a network cable.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 21, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventor: Keito SAWADA
  • Publication number: 20120311362
    Abstract: A communication device that has a normal state and a standby state and that does not permit change of a link rate in the standby state includes: a connecting unit that connects the communication device to a network; a detecting unit that detects traffic at the connecting unit in the network; and a control unit that performs transition processing from the normal state to the standby state when the detecting unit does not detect the traffic for a first period while the communication device is in the normal state. When the control unit is connected to the network by the connecting unit at a first link rate and the detecting unit does not detect the traffic for a second period that is shorter than the first period, the control unit changes the link rate to a second link rate that is lower than the first link rate.
    Type: Application
    Filed: May 21, 2012
    Publication date: December 6, 2012
    Inventor: Keito SAWADA
  • Publication number: 20120192045
    Abstract: According to an embodiment, an information processing apparatus includes: a receiving unit that receives a fragment packet; an extracting unit that extracts checksum information of which packet has not been subjected to the fragmentation process, and causes the checksum information to be stored in a checksum storage unit; a calculating unit that performs a checksum calculation on each of the plurality of received fragment packets, integrates a calculation result of each fragment packet, and causes an integrated calculation result to be stored in a calculation result storage unit; and a determining unit that determines whether or not there is an error in a packet obtained as a result of combining based on the integrated calculation result stored and the checksum information stored.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 26, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventor: Keito SAWADA