Patents by Inventor Sadahiro Kimura
Sadahiro Kimura 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: 8599743Abstract: In a network of wireless communications apparatuses connected by a plurality of routes, a wireless communications apparatus includes a packet generating unit that generates a packet for each of the plurality of routes in the network; an operating unit that generates power consumption information for each of the routes, the power consumption information indicating power consumption for transmitting the packets; an attaching unit that attaches the power consumption information to the packets; and a transmit unit that transmits the packets to which the power consumption information is attached via the corresponding routes.Type: GrantFiled: November 15, 2010Date of Patent: December 3, 2013Assignee: Ricoh Company, Ltd.Inventor: Sadahiro Kimura
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Patent number: 8000658Abstract: A communication control unit transmits a detection message and receives a reply message with respect to an external device via a communicating unit. A first calculating unit calculates distance to the external device based on time required to receive the reply message. A determining unit determines whether the distance is smaller than a predetermined threshold. When the distance is smaller than the threshold, an establishing unit establishes an encryption invalidated communication with the external device, and a second calculating unit calculates minimum transmission power of a wireless signal to communicate with the external device at the distance.Type: GrantFiled: December 16, 2008Date of Patent: August 16, 2011Assignee: Ricoh Company, limitedInventor: Sadahiro Kimura
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Publication number: 20110116402Abstract: In a network of wireless communications apparatuses connected by a plurality of routes, a wireless communications apparatus includes a packet generating unit that generates a packet for each of the plurality of routes in the network; an operating unit that generates power consumption information for each of the routes, the power consumption information indicating power consumption for transmitting the packets; an attaching unit that attaches the power consumption information to the packets; and a transmit unit that transmits the packets to which the power consumption information is attached via the corresponding routes.Type: ApplicationFiled: November 15, 2010Publication date: May 19, 2011Applicant: RICOH COMPANY, LTD.Inventor: Sadahiro KIMURA
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Patent number: 7908617Abstract: A broadcast receiving system incorporating an echo canceling means automatically initiates recording of the broadcast and also controls the sound volume by taking into account the viewer's movements and ambient conditions, by using echo canceling means of the type used in hand-free telephones. The broadcast receiving system includes a broadcast receiving unit for receiving a broadcast in the form of either digital or analog signals; an echo canceling unit; and a determining unit for monitoring the amount of residual echoes in the echo canceling unit, determining whether the amount of residual echoes has exceeded a predetermined value, and instructing a storage unit to store the broadcast if the amount of residual echoes is found to have exceeded the predetermined value.Type: GrantFiled: July 29, 2002Date of Patent: March 15, 2011Assignee: Ricoh Company, Ltd.Inventor: Sadahiro Kimura
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Patent number: 7840183Abstract: A short-range wireless communication device is disclosed that is able to ensure QoS of a communication and reduce power consumption by controlling allocation of a period occupied by the communication and by controlling a communication rate within the period occupied by the communication. The short-range wireless communication device receives or transmits beacons in a beacon period, allocates a communication-occupied interval in a super-frame between two adjacent beacon periods, and carries out a communication in the communication-occupied interval in conformity with a predetermined protocol. The short-range wireless communication device includes a control unit that dynamically sets and changes a communication rate in the communication-occupied interval and a number of slots constituting the communication-occupied interval.Type: GrantFiled: February 1, 2007Date of Patent: November 23, 2010Assignee: Ricoh Company, Ltd.Inventor: Sadahiro Kimura
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Publication number: 20090181621Abstract: A communication control unit transmits a detection message and receives a reply message with respect to an external device via a communicating unit. A first calculating unit calculates distance to the external device based on time required to receive the reply message. A determining unit determines whether the distance is smaller than a predetermined threshold. When the distance is smaller than the threshold, an establishing unit establishes an encryption invalidated communication with the external device, and a second calculating unit calculates minimum transmission power of a wireless signal to communicate with the external device at the distance.Type: ApplicationFiled: December 16, 2008Publication date: July 16, 2009Inventor: Sadahiro Kimura
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Patent number: 7539477Abstract: A wireless LAN apparatus is disclosed that includes a module group section that is connected to an upper level CPU of an upper level apparatus, an RF processing part that is connected to the module group section, a power reduction instruction dispatching section for dispatching a power reduction instruction, a power reduction instruction receiving section for receiving the power reduction instruction dispatched from the power reduction instruction section, and a power reduction sequence controlling section for controlling power of the module group section in a predetermined order in accordance with the power reduction instruction dispatched by the power reduction instruction dispatching section.Type: GrantFiled: November 9, 2005Date of Patent: May 26, 2009Assignee: Ricoh Company, Ltd.Inventors: Sadahiro Kimura, Syuji Kubota, Mayuko Ueno
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Publication number: 20070213091Abstract: A short-range wireless communication device is disclosed that is able to ensure QoS of a communication and reduce power consumption by controlling allocation of a period occupied by the communication and by controlling a communication rate within the period occupied by the communication. The short-range wireless communication device receives or transmits beacons in a beacon period, allocates a communication-occupied interval in a super-frame between two adjacent beacon periods, and carries out a communication in the communication-occupied interval in conformity with a predetermined protocol. The short-range wireless communication device includes a control unit that dynamically sets and changes a communication rate in the communication-occupied interval and a number of slots constituting the communication-occupied interval.Type: ApplicationFiled: February 1, 2007Publication date: September 13, 2007Inventor: Sadahiro Kimura
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Publication number: 20060121952Abstract: A wireless LAN apparatus is disclosed that includes a module group section that is connected to an upper level CPU of an upper level apparatus, an RF processing part that is connected to the module group section, a power reduction instruction dispatching section for dispatching a power reduction instruction, a power reduction instruction receiving section for receiving the power reduction instruction dispatched from the power reduction instruction section, and a power reduction sequence controlling section for controlling power of the module group section in a predetermined order in accordance with the power reduction instruction dispatched by the power reduction instruction dispatching section.Type: ApplicationFiled: November 9, 2005Publication date: June 8, 2006Inventors: Sadahiro Kimura, Syuji Kubota, Mayuko Ueno
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Publication number: 20030035550Abstract: A broadcast receiving system incorporating an echo canceling means automatically initiates recording of the broadcast and also controls the sound volume by taking into account the viewer's movements and ambient conditions, by using echo canceling means of the type used in hand-free telephones. The broadcast receiving system includes a broadcast receiving unit for receiving a broadcast in the form of either digital or analog signals; an echo canceling unit; and a determining unit for monitoring the amount of residual echoes in the echo canceling unit, determining whether the amount of residual echoes has exceeded a predetermined value, and instructing a storage unit to store the broadcast if the amount of residual echoes is found to have exceeded the predetermined value.Type: ApplicationFiled: July 29, 2002Publication date: February 20, 2003Applicant: Ricoh Company, Ltd.Inventor: Sadahiro Kimura
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Patent number: 4136063Abstract: The present invention relates to a catalyst carrier characterized by the fact that it comprises a substance which promotes a transition of an alumina that can be converted to .alpha.-alumina, which substance is located near the surface of a carrier composed mainly of alumina and which carrier is subjected to a heat treatment under appropriate conditions, thereby causing the transition of said alumina to .alpha.-alumina, with those pores near the surface made larger in diameter than those pores located more deeply within the carrier. The invention also includes a method of manufacturing said catalyst carrier.Type: GrantFiled: May 27, 1977Date of Patent: January 23, 1979Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Sadahiro Kimura, Kiyoshi Uchida, Hiroyuki Akizuki
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Patent number: 4102813Abstract: A catalyst for purifying exhaust gases, comprising a carrier composed mainly of active alumina, containing near its surface a component to promote the transformation of active alumina to .alpha.-alumina when said carrier is subjected to a heat treatment in order to make the diameters of the pores near its surface larger than those of the pores in its interior, impregnated with an active catalytic component which permeates further into a portion of the interior deeper than the layer having the alumina transformation-promoting component.Type: GrantFiled: April 16, 1975Date of Patent: July 25, 1978Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Sadahiro Kimura, Kiyoshi Uchida, Hiroyuki Akizuki
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Patent number: 4039481Abstract: The present invention relates to a catalyst carrier characterized by the fact that it comprises a substance which promotes a transition to .alpha.-alumina, which substance is located near the surface of a carrier composed mainly of alumina and which carrier is subjected to a heat treatment under appropriate conditions, thereby causing the transition of said alumina to .alpha.-alumina, with those pores near the surface made larger in diameter than those pores located more deeply within the carrier. The invention also includes a method of manufacturing said catalyst carrier.Type: GrantFiled: April 16, 1975Date of Patent: August 2, 1977Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Sadahiro Kimura, Kiyoshi Uchida, Hiroyuki Akizuki