Patents by Inventor Takahito Yoshizawa

Takahito Yoshizawa 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).

  • Publication number: 20170332346
    Abstract: The present invention concerns a femtocell device (1) and method at a femtocell device (1) comprising a first interface (23) for communicating to a macrocell (4) and a second interface (25) for communicating to a broadband network (2), the method comprising the steps of when communication to the broadband network (2) is inactive, receiving a paging message from the macrocell (4) destined to a mobile device (3) connected to the femtocell device (1), and notifying the mobile device (3) to redirect to the macrocell (4).
    Type: Application
    Filed: July 31, 2017
    Publication date: November 16, 2017
    Inventor: Takahito Yoshizawa
  • Patent number: 9549414
    Abstract: A system and broadband device for performing service admission control. The system and device being configured to grant services according to their priority level so that, when a service with low priority has been granted and a service with higher priority is requested later on, the service with low priority is cancelled and the service with high priority is granted in case a resource is not able to support both the service with low priority and the service with high priority.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: January 17, 2017
    Assignee: Thomson Licensing
    Inventor: Takahito Yoshizawa
  • Publication number: 20160255623
    Abstract: An example method for facilitating almost blank sub-frame (ABS) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB), ABS patterns from a plurality of neighboring eNBs in a orthogonal frequency-division multiplexing based network, each neighboring eNB transmitting a separate ABS pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving eNB within its serving cell, and computing an optimal ABS pattern at the serving eNB subject to the maximum duty cycle and based on the ABS patterns received from the plurality of neighboring eNBs. In specific embodiments, computing the optimal ABS pattern includes identifying neighboring eNBs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring eNBs, and selecting each identified sub-frame for configuring as an ABS.
    Type: Application
    Filed: May 6, 2016
    Publication date: September 1, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Raymond Kwan
  • Patent number: 9398586
    Abstract: An example method for facilitating almost blank sub-frame (ABS) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB), ABS patterns from a plurality of neighboring eNBs in a orthogonal frequency-division multiplexing based network, each neighboring eNB transmitting a separate ABS pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving eNB within its serving cell, and computing an optimal ABS pattern at the serving eNB subject to the maximum duty cycle and based on the ABS patterns received from the plurality of neighboring eNBs. In specific embodiments, computing the optimal ABS pattern includes identifying neighboring eNBs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring eNBs, and selecting each identified sub-frame for configuring as an ABS.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 19, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Raymond Kwan
  • Patent number: 9366941
    Abstract: A device according to the present invention includes at least one first light amount adjustment blade moving rectilinearly in a direction crossing a light passage direction and at least one second light amount adjustment blade pivoting within a plane crossing the light passage direction. When a light passage aperture of a polygonal shape formed by annularly superposing the first light amount adjustment blade and the second light amount adjustment blade is enlarged, a shape of the light passage aperture comes close to a circular shape from a polygonal shape.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: June 14, 2016
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takahito Yoshizawa, Kyousuke Miyashita
  • Patent number: 9288804
    Abstract: An example method for facilitating almost blank sub-frame (ABS) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB), ABS patterns from a plurality of neighboring eNBs in a orthogonal frequency-division multiplexing based network, each neighboring eNB transmitting a separate ABS pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving eNB within its serving cell, and computing an optimal ABS pattern at the serving eNB subject to the maximum duty cycle and based on the ABS patterns received from the plurality of neighboring eNBs. In specific embodiments, computing the optimal ABS pattern includes identifying neighboring eNBs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring eNBs, and selecting each identified sub-frame for configuring as an ABS.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 15, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Raymond Kwan
  • Publication number: 20160044544
    Abstract: In an example, a wireless communication system and apparatuses thereof are described. In an example long-term evolution (LTE) network, a first base station hands over a connection to a second base station. The first base station may be a (femto) home eNodeB (HeNB) or (macro) eNodeB. The second base station may also be a HeNB or eNodeB connected to a different gateway. The first base station may send “Handover Request” on an X2 connection, identifying the gateway that the second base station is connected to as the correct gateway. After sending a “Handover Request Acknowledgement,” the second base station correctly establishes a tunnel to a connected gateway device.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 11, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
  • Publication number: 20150346583
    Abstract: A device according to the present invention includes at least one first light amount adjustment blade moving rectilinearly in a direction crossing a light passage direction and at least one second light amount adjustment blade pivoting within a plane crossing the light passage direction. When a light passage aperture of a polygonal shape formed by annularly superposing the first light amount adjustment blade and the second light amount adjustment blade is enlarged, a shape of the light passage aperture comes close to a circular shape from a polygonal shape.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: Takahito Yoshizawa, Kyousuke Miyashita
  • Publication number: 20150312902
    Abstract: An example method for facilitating almost blank sub-frame (ABS) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB), ABS patterns from a plurality of neighboring eNBs in a orthogonal frequency-division multiplexing based network, each neighboring eNB transmitting a separate ABS pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving eNB within its serving cell, and computing an optimal ABS pattern at the serving eNB subject to the maximum duty cycle and based on the ABS patterns received from the plurality of neighboring eNBs. In specific embodiments, computing the optimal ABS pattern includes identifying neighboring eNBs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring eNBs, and selecting each identified sub-frame for configuring as an ABS.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 29, 2015
    Applicant: Cisco Technology, Inc.
    Inventors: Takahito Yoshizawa, Raymond Kwan
  • Publication number: 20150312901
    Abstract: An example method for facilitating almost blank sub-frame (ABS) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB), ABS patterns from a plurality of neighboring eNBs in a orthogonal frequency-division multiplexing based network, each neighboring eNB transmitting a separate ABS pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving eNB within its serving cell, and computing an optimal ABS pattern at the serving eNB subject to the maximum duty cycle and based on the ABS patterns received from the plurality of neighboring eNBs. In specific embodiments, computing the optimal ABS pattern includes identifying neighboring eNBs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring eNBs, and selecting each identified sub-frame for configuring as an ABS.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 29, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Raymond Kwan
  • Patent number: 9152013
    Abstract: A light-quantity control apparatus includes multiple light-quantity control blades each configured to overlap with at least another one of the light-quantity control blades so as to form a light-passing aperture and each configured to rotate to change a size of the light-passing aperture. Each of the multiple light-quantity control blades includes a thick portion and a thin portion. The thick portion forms an outer end portion on an opposite side to the light-passing aperture in a rotation direction of the light-quantity control blade. The thin portion is formed in an aperture side blade area that overlaps with the at least another one of the multiple light-quantity control blades so as to form part of a circular overlap of the multiple light-quantity control blades and that includes an inner edge forming an edge of the light-passing aperture.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: October 6, 2015
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Takahito Yoshizawa
  • Publication number: 20150160533
    Abstract: A light-quantity control apparatus includes multiple light-quantity control blades each configured to overlap with at least another one of the light-quantity control blades so as to form a light-passing aperture and each configured to rotate to change a size of the light-passing aperture. Each of the multiple light-quantity control blades includes a thick portion and a thin portion. The thick portion forms an outer end portion on an opposite side to the light-passing aperture in a rotation direction of the light-quantity control blade. The thin portion is formed in an aperture side blade area that overlaps with the at least another one of the multiple light-quantity control blades so as to form part of a circular overlap of the multiple light-quantity control blades and that includes an inner edge forming an edge of the light-passing aperture.
    Type: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Inventor: Takahito Yoshizawa
  • Patent number: 9007671
    Abstract: The light-quantity control apparatus includes a base member having an opening allowing light to pass therethrough, a first aperture blade movable in a direction orthogonal to a light passing direction, a second aperture blade rotatable in a surface orthogonal to the light passing direction, and a driving lever to be rotated by a driver to drive the first and second aperture blades. The base member has a protruding portion engaging with a groove portion provided in the first aperture blade, the second aperture blade has a driving cam groove portion with which a driving pin provided in the driving lever slidably engages and a rotation center hole portion with which the protruding portion engages. The second aperture blade is rotated about the protruding portion by sliding of the driving pin with respect to the driving cam groove portion with rotation of the driving lever.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: April 14, 2015
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takahito Yoshizawa, Kimio Handa
  • Publication number: 20150065158
    Abstract: A system and broadband device for performing service admission control. The system and device being configured to grant services according to their priority level so that, when a service with low priority has been granted and a service with higher priority is requested later on, the service with low priority is cancelled and the service with high priority is granted in case a resource is not able to support both the service with low priority and the service with high priority.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 5, 2015
    Applicant: THOMSON LICENSING
    Inventor: Takahito Yoshizawa
  • Patent number: 8892111
    Abstract: The invention concerns a method at a base station device for performing service admission control, the base station device comprising an interface to a cellular network, and an interface to connect to a broadband device, the base station device being adapted to provide service access to devices of the cellular network, the service being provided through the broadband network. To this end the method comprises the steps of receiving a service admission request from a device of the cellular network, sending a resource reservation request to the broadband device for enabling said service on the broadband network, receiving a resource reservation response from the broadband device and responding to the device of the cellular network on the availability of the service, the availability depending on the service admission response received from the broadband device.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 18, 2014
    Assignee: Thomson Licensing
    Inventor: Takahito Yoshizawa
  • Patent number: 8868055
    Abstract: The present invention concerns a cellular device access point device and a method at a cellular access point device for configuring a set of parameters at the cellular access point device comprising receiving and storing a set of identifiers and a set of parameters values, each identifier corresponding to a different set of parameters values, receiving, from a cellular management system, an identifier corresponding to an environment where the cellular access point device is located, and setting the parameter to the values corresponding to the identifier.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 21, 2014
    Assignee: Thomson Licensing
    Inventor: Takahito Yoshizawa
  • Publication number: 20120252429
    Abstract: The present invention concerns a cellular device access point device and a method at a cellular access point device for configuring a set of parameters at the cellular access point device comprising receiving and storing a set of identifiers and a set of parameters values, each identifier corresponding to a different set of parameters values, receiving, from a cellular management system, an identifier corresponding to an environment where the cellular access point device is located, and setting the parameter to the values corresponding to the identifier.
    Type: Application
    Filed: September 29, 2010
    Publication date: October 4, 2012
    Inventor: Takahito Yoshizawa
  • Publication number: 20120208542
    Abstract: The present invention concerns a femtocell device and method at a femtocell device comprising a first interface for communicating to a macrocell and a second interface for communicating to a broadband network, the method comprising the steps of, when communication to the broadband network is inactive, receiving a paging message from the macrocell destined to a mobile device connected to the femtocell device, and notifying the mobile device to redirect to the macrocell.
    Type: Application
    Filed: May 25, 2010
    Publication date: August 16, 2012
    Inventor: Takahito Yoshizawa
  • Patent number: D756440
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: May 17, 2016
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Takahito Yoshizawa
  • Patent number: D800203
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: October 17, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Takahito Yoshizawa