Patents by Inventor Yasutaka Kawamoto
Yasutaka Kawamoto 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: 9877355Abstract: A wireless communicator includes network processors transmitting data to and receiving data from respective different networks; a media access control (MAC) setter receiving pieces of information on a MAC layer from the plurality of network processors and storing the pieces of information on the MAC layer; and a MAC processor performing operations on media access control on the basis of the pieces of information stored in the MAC setter. In the wireless communicator, the network processors supply a frame signal containing network identification information corresponding to the respective network processors to the MAC processor. Thus, it is possible to provide a wireless communicator which can give a notice to every network processor even when broadcast frames are received and which can make a reply even when beacon request command frames are received.Type: GrantFiled: November 20, 2014Date of Patent: January 23, 2018Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Patent number: 9781691Abstract: There is provided a wireless communication device including a reception timing sense unit configured to sense reception timing information, a reception timing storage unit configured to store the reception timing information and to disclose and delete the stored reception timing information, a frame group arrival confirmation unit configured to confirm that a frame group arrives, a first frame group transmission unit, a second frame group transmission unit, a third frame group transmission unit, and a frame group transmission control unit configured to select any of the first frame group transmission unit, the second frame group transmission unit, and the third frame group transmission unit on the basis of the reception timing information and a result of frame group arrival confirmation, and to control a frame group transmission operation.Type: GrantFiled: June 12, 2015Date of Patent: October 3, 2017Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Patent number: 9756562Abstract: There is provided a wireless transmission device in which a lower layer processing unit inserts first random delay before frame transmission in response to a frame transmission request made by an upper layer processing unit, the wireless transmission device including a frame transmitting unit configured to transmit a frame when the frame transmission request is made by the upper layer processing unit, and a frame group transmitting unit configured to transmit a frame group including one or two or more types of frame in accordance with a listening state of a facing wireless reception device when the frame transmission request is made by the upper layer processing unit.Type: GrantFiled: June 15, 2015Date of Patent: September 5, 2017Assignee: Oki Electric Industry Co., Ltd.Inventors: Toshihiko Matsunaga, Yasutaka Kawamoto, Yuki Kubo
-
Patent number: 9473597Abstract: There is provided a wireless communication apparatus capable of using a first MAC protocol and a second MAC protocol including one wireless communication unit. The wireless communication unit includes: a MAC protocol control unit carrying out state transitions and processing in a present state according to the first MAC protocol and the second MAC protocol; and a frame communication unit carrying out communication of frames according to the first MAC protocol and communication of frames according to the second MAC protocol whose frame format is the same as the frames according to the first MAC protocol.Type: GrantFiled: August 6, 2013Date of Patent: October 18, 2016Assignee: Oki Electric Industry Co., Ltd.Inventors: Yasutaka Kawamoto, Masanori Nozaki
-
Publication number: 20160119888Abstract: There is provided a wireless communication device including a reception timing sense unit configured to sense reception timing information, a reception timing storage unit configured to store the reception timing information and to disclose and delete the stored reception timing information, a frame group arrival confirmation unit configured to confirm that a frame group arrives, a first frame group transmission unit, a second frame group transmission unit, a third frame group transmission unit, and a frame group transmission control unit configured to select any of the first frame group transmission unit, the second frame group transmission unit, and the third frame group transmission unit on the basis of the reception timing information and a result of frame group arrival confirmation, and to control a frame group transmission operation.Type: ApplicationFiled: June 12, 2015Publication date: April 28, 2016Applicant: Oki Electric Industry Co., Ltd.Inventor: Yasutaka KAWAMOTO
-
Publication number: 20160021612Abstract: There is provided a wireless transmission device in which a lower layer processing unit inserts first random delay before frame transmission in response to a frame transmission request made by an upper layer processing unit, the wireless transmission device including a frame transmitting unit configured to transmit a frame when the frame transmission request is made by the upper layer processing unit, and a frame group transmitting unit configured to transmit a frame group including one or two or more types of frame in accordance with a listening state of a facing wireless reception device when the frame transmission request is made by the upper layer processing unit.Type: ApplicationFiled: June 15, 2015Publication date: January 21, 2016Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventors: Toshihiko MATSUNAGA, Yasutaka KAWAMOTO, Yuki KUBO
-
Publication number: 20150189693Abstract: A wireless communicator includes network processors transmitting data to and receiving data from respective different networks; a media access control (MAC) setter receiving pieces of information on a MAC layer from the plurality of network processors and storing the pieces of information on the MAC layer; and a MAC processor performing operations on media access control on the basis of the pieces of information stored in the MAC setter. In the wireless communicator, the network processors supply a frame signal containing network identification information corresponding to the respective network processors to the MAC processor. Thus, it is possible to provide a wireless communicator which can give a notice to every network processor even when broadcast frames are received and which can make a reply even when beacon request command frames are received.Type: ApplicationFiled: November 20, 2014Publication date: July 2, 2015Applicant: Oki Electric Industry Co., Ltd.Inventor: Yasutaka KAWAMOTO
-
Patent number: 9008070Abstract: An information communication apparatus may include a request buffer, a request sorting device, a sending device, a frame generating device, and a frame transmitting device. A request buffer may store transmission requests corresponding to frames. A request sorting device may sort the transmission requests. A sending device may send the sorted transmission requests in accordance with a transmission timing that is determined based on destinations of the frames and in which a receiving node can receive the frames. A frame generating device may generate frames based on the received transmission requests. A frame transmitting device configured to transmit the generated frames.Type: GrantFiled: March 28, 2012Date of Patent: April 14, 2015Assignee: Oki Electric Industry Co., Ltd.Inventors: Yasutaka Kawamoto, Yuki Kubo
-
Patent number: 8750844Abstract: A radio transmission device may comprise a stop condition assessment module and a stop reason reporting module. The stop condition assessment module may be configured to, in response to an occurrence of a transmission stop condition, determine at least a type of the transmission stop condition. The stop reason reporting module may be configured to send information relating to the transmission stop condition to an upper layer processing module.Type: GrantFiled: March 7, 2013Date of Patent: June 10, 2014Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Publication number: 20140105080Abstract: There is provided a wireless communication apparatus capable of using a first MAC protocol and a second MAC protocol including one wireless communication unit. The wireless communication unit includes: a MAC protocol control unit carrying out state transitions and processing in a present state according to the first MAC protocol and the second MAC protocol; and a frame communication unit carrying out communication of frames according to the first MAC protocol and communication of frames according to the second MAC protocol whose frame format is the same as the frames according to the first MAC protocol.Type: ApplicationFiled: August 6, 2013Publication date: April 17, 2014Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventors: Yasutaka KAWAMOTO, Masanori NOZAKI
-
Patent number: 8601295Abstract: A network includes nodes that transmit information to each other. Some nodes operate intermittently; other nodes operate continuously. Information is transmitted to an intermittently operating node by a handshaking protocol in which the intermittently operating node indicates that it is ready to receive. Information is transmitted to a continuously operating node without such handshaking, thereby saving time and power. Each transmitting node has a memory storing information indicating which other nodes require handshaking.Type: GrantFiled: September 22, 2011Date of Patent: December 3, 2013Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Publication number: 20130244597Abstract: A radio transmission device may comprise a stop condition assessment module and a stop reason reporting module. The stop condition assessment module may be configured to, in response to an occurrence of a transmission stop condition, determine at least a type of the transmission stop condition. The stop reason reporting module may be configured to send information relating to the transmission stop condition to an upper layer processing module.Type: ApplicationFiled: March 7, 2013Publication date: September 19, 2013Applicant: Oki Electric Industry Co., Ltd.Inventor: Yasutaka KAWAMOTO
-
Patent number: 8331336Abstract: A radio communications apparatus includes a network position detector for detecting information on the position of the communication device on a radio telecommunications network, a network connection detector for detecting the disengagement of the device from the network, and a controller for controlling the transmission timing of join signals. The controller is adapted to vary a transmission timeout period, upon expiring of which a join signal is sent out, depending on the information about the positions on the network. The radio communications device is thus able to decrease the probability of occurrence of collision to thereby reduce the time taken for reestablishing the network.Type: GrantFiled: March 10, 2009Date of Patent: December 11, 2012Assignee: Oki Electric Industry Co., Ltd.Inventors: Yasutaka Kawamoto, Tadamichi Tagawa
-
Publication number: 20120250671Abstract: An information communication apparatus may include a request buffer, a request sorting device, a sending device, a frame generating device, and a frame transmitting device. A request buffer may store transmission requests corresponding to frames. A request sorting device may sort the transmission requests. A sending device may send the sorted transmission requests in accordance with a transmission timing that is determined based on destinations of the frames and in which a receiving node can receive the frames. A frame generating device may generate frames based on the received transmission requests. A frame transmitting device configured to transmit the generated frames.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventors: Yasutaka KAWAMOTO, Yuki KUBO
-
Publication number: 20120011381Abstract: A network includes nodes that transmit information to each other. Some nodes operate intermittently; other nodes operate continuously. Information is transmitted to an intermittently operating node by a handshaking protocol in which the intermittently operating node indicates that it is ready to receive. Information is transmitted to a continuously operating node without such handshaking, thereby saving time and power. Each transmitting node has a memory storing information indicating which other nodes require handshaking.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventor: Yasutaka KAWAMOTO
-
Patent number: 8046611Abstract: A network includes nodes that transmit information to each other. Some nodes operate intermittently; other nodes operate continuously. Information is transmitted to an intermittently operating node by a handshaking protocol in which the intermittently operating node indicates that it is ready to receive. Information is transmitted to a continuously operating node without such handshaking, thereby saving time and power. Each transmitting node has a memory storing information indicating which other nodes require handshaking.Type: GrantFiled: August 25, 2008Date of Patent: October 25, 2011Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Patent number: 7916673Abstract: A sender communication device includes a communication unit for sending a communication signal to a receiver communication device, and a communication controller for controlling setting of communication channels used for the communication unit as well as for setting, when sending the communication signal, a sending period of the communication signal substantially not shorter than a receive confirmation period of all communication channels in the receiver communication device. A receiver communication device includes a communication unit for receiving the communication signal sent from the sender communication device while switching over plural communication channels, and a communication controller for controlling switching of the communication channels and for setting a communication signal receive-waiting opportunity, in which a first communication channel is used, substantially higher than a receive-waiting opportunity, in which a second communication channel is used.Type: GrantFiled: January 28, 2009Date of Patent: March 29, 2011Assignee: Oki Electric Industry Co., Ltd.Inventor: Yasutaka Kawamoto
-
Publication number: 20100225471Abstract: An information providing server obtains user information from a user apparatus. The user information is dependent on a place at which the user was previously located. The information providing server decides, from the user information, whether the user has been present within a permission zone including an information acquisition apparatus, and interconnects the user apparatus and the information acquisition apparatus, directly or indirectly, only if such is the case. Users who were present within the permission zone are able to obtain information acquired by the information acquisition apparatus without going through a preliminary registration procedure, while other users are unable to obtain the acquired information.Type: ApplicationFiled: February 1, 2010Publication date: September 9, 2010Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventors: Yasutaka Kawamoto, Toshihisa Nakai
-
Publication number: 20090233638Abstract: A radio communications apparatus includes a network position detector for detecting information on the position of the communication device on a radio telecommunications network, a network connection detector for detecting the disengagement of the device from the network, and a controller for controlling the transmission timing of join signals. The controller is adapted to vary a transmission timeout period, upon expiring of which a join signal is sent out, depending on the information about the positions on the network. The radio communications device is thus able to decrease the probability of occurrence of collision to thereby reduce the time taken for reestablishing the network.Type: ApplicationFiled: March 10, 2009Publication date: September 17, 2009Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventors: Yasutaka KAWAMOTO, Tadamichi TAGAWA
-
Publication number: 20090190608Abstract: A sender communication device includes a communication unit for sending a communication signal to a receiver communication device, and a communication controller for controlling setting of communication channels used for the communication unit as well as for setting, when sending the communication signal, a sending period of the communication signal substantially not shorter than a receive confirmation period of all communication channels in the receiver communication device. A receiver communication device includes a communication unit for receiving the communication signal sent from the sender communication device while switching over plural communication channels, and a communication controller for controlling switching of the communication channels and for setting a communication signal receive-waiting opportunity, in which a first communication channel is used, substantially higher than a receive-waiting opportunity, in which a second communication channel is used.Type: ApplicationFiled: January 28, 2009Publication date: July 30, 2009Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventor: Yasutaka Kawamoto