Patents by Inventor Katsuya Nounin
Katsuya Nounin 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: 8165536Abstract: A wireless communication apparatus includes an M-number of (M is an integer of 2 or more) receiving portions connected to respective antennas, a frame analyzing section configured to analyze a reception signal received by the M-number of receiving portions, and a selecting section configured to select a receiving portion to be in service from the M-number of receiving portions. The selecting section selects a P-number of (P is an integer of from 0 to M) receiving portions from the M-number of receiving portions, based on an analysis result obtained by the frame analyzing section.Type: GrantFiled: October 14, 2005Date of Patent: April 24, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Sekiya, Kiyoshi Toshimitsu, Tetsu Nakajima, Katsuya Nounin, Tsuguhide Aoki, Tomoya Tandai, Tomoko Adachi, Daisuke Takeda
-
Patent number: 7609793Abstract: According to an aspect of the present invention, there is provided with a radio receiver including: one or more antenna which receives radio signals; a plurality of filters which selectively output signals in respective reception bands from the radio signals received by the antenna, adjacent reception bands partially overlapping each other; a plurality of A/D converters disposed correspondingly to the filters to convert the signals output from the respective filters to digital signals; extracting units which extract signal components of a boundary radio signal spreading across at least two reception bands adjacent to each other from digital signals associated with the at least two reception bands adjacent to each other; a combining unit which combines the signal components extracted by the extracting units to restore the boundary radio signal; and a demodulation unit which demodulates the boundary radio signal restored by the combining unit.Type: GrantFiled: February 21, 2006Date of Patent: October 27, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Tazuko Tomioka, Hiroshi Yoshida, Katsuya Nounin, Tomoya Horiguchi, Ren Sakata
-
Patent number: 7269148Abstract: A communication scheme for improving the performance of communications utilizing the transport layer connection provided via a radio network, by enabling a control of the transport layer connection according to the radio communication state and property of the radio terminal, without changing implementation of the transport layer of a terminal connected to a wire network. The gateway device is provided with a control unit for controlling a connection in the radio transport layer protocol according an information regarding a radio communication state of the radio terminal device, where the information regarding the radio communication state of the radio terminal device is notified from either a radio base station device covering a radio service area in which the radio terminal device is located or a home location register for carrying out at least registration and management of the radio terminal device.Type: GrantFiled: July 8, 2002Date of Patent: September 11, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Takagi, Noriyasu Kato, Keiji Tsunoda, Kumiko Nakakita, Katsuya Nounin, Mutsumu Serizawa, Eiji Kamagata
-
Publication number: 20060256884Abstract: According to an aspect of the present invention, there is provided with a radio receiver including: one or more antenna which receives radio signals; a plurality of filters which selectively output signals in respective reception bands from the radio signals received by the antenna, adjacent reception bands partially overlapping each other; a plurality of A/D converters disposed correspondingly to the filters to convert the signals output from the respective filters to digital signals; extracting units which extract signal components of a boundary radio signal spreading across at least two reception bands adjacent to each other from digital signals associated with the at least two reception bands adjacent to each other; a combining unit which combines the signal components extracted by the extracting units to restore the boundary radio signal; and a demodulation unit which demodulates the boundary radio signal restored by the combining unit.Type: ApplicationFiled: February 21, 2006Publication date: November 16, 2006Inventors: Tazuko Tomioka, Hiroshi Yoshida, Katsuya Nounin, Tomoya Horiguchi, Ren Sakata
-
Patent number: 7130287Abstract: In a radio communication system having narrow-band up- and down-link radio channels and a wide-band down-link radio channel, when a radio terminal is to receive data through the wide-band down-link radio channel, the narrow-band up- and down-link radio channels are assigned to the radio terminal in advance. With this operation, communication an be performed by using the wide-band down-link radio channel. In addition, the narrow-band up- and down-link radio channels can be used as radio channels for performing control to efficiently transmit data by using the wide-band down-link radio channel.Type: GrantFiled: December 7, 2005Date of Patent: October 31, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Nounin, Kiyoshi Toshimitsu, Takafumi Sakamoto, Nobuyasu Nakajima, Eiji Kamagata, Mutsumu Serizawa
-
Publication number: 20060092880Abstract: In a radio communication system having narrow-band up- and down-link radio channels and a wide-band down-link radio channel, when a radio terminal is to receive data thrugh the wide-band down-link rado channel, the narrow-band up- and down-link radio channels are assigned to the radio terminal in advance. With this operation, communication an be performed by using the wide-band down-link radio channel. In addition, the narrow-band up- and down-link radio channels can be used as radio channels for performing control to efficiently trnsmit data by using the wide-band down-link radio channel.Type: ApplicationFiled: December 7, 2005Publication date: May 4, 2006Inventors: Katsuya Nounin, Kiyoshi Toshimitsu, Takafumi Sakamoto, Nobuyasu Nakajima, Eiji Kamagata, Mutsumu Serizawa
-
Publication number: 20060084461Abstract: A wireless communication apparatus includes an M-number of (M is an integer of 2 or more) receiving portions connected to respective antennas, a frame analyzing section configured to analyze a reception signal received by the M-number of receiving portions, and a selecting section configured to select a receiving portion to be in service from the M-number of receiving portions. The selecting section selects a P-number of (P is an integer of from 0 to M) receiving portions from the M-number of receiving portions, based on an analysis result obtained by the frame analyzing section.Type: ApplicationFiled: October 14, 2005Publication date: April 20, 2006Inventors: Masahiro Sekiya, Kiyoshi Toshimitsu, Tetsu Nakajima, Katsuya Nounin, Tsuguhide Aoki, Tomoya Tandai, Tomoko Adachi, Daisuke Takeda
-
Patent number: 6999438Abstract: In a radio communication system having narrow-band up- and down-link radio channels and a wide-band down-link radio channel, when a radio terminal is to receive data through the wide-band down-link radio channel, the narrow-band up- and down-link radio channels are assigned to the radio terminal in advance. With this operation, communication an be performed by using the wide-band down-link radio channel. In addition, the narrow-band up- and down-link radio channels can be used as radio channels for performing control to efficiently transmit data by using the wide-band down-link radio channel.Type: GrantFiled: May 17, 2004Date of Patent: February 14, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Nounin, Kiyoshi Toshimitsu, Takafumi Sakamoto, Nobuyasu Nakajima, Eiji Kamagata, Mutsumu Serizawa
-
Publication number: 20040224719Abstract: In a radio communication system having narrow-band up- and down-link radio channels and a wide-band down-link radio channel, when a radio terminal is to receive data through the wide-band down-link radio channel, the narrow-band up- and down-link radio channels are assigned to the radio terminal in advance. With this operation, communication an be performed by using the wide-band down-link radio channel. In addition, the narrow-band up- and down-link radio channels can be used as radio channels for performing control to efficiently transmit data by using the wide-band down-link radio channel.Type: ApplicationFiled: May 17, 2004Publication date: November 11, 2004Inventors: Katsuya Nounin, Kiyoshi Toshimitsu, Takafumi Sakamoto, Nobuyasu Nakajima, Eiji Kamagata, Mutsumu Serizawa
-
Publication number: 20020186680Abstract: A communication scheme for improving the performance of communications utilizing the transport layer connection provided via a radio network, by enabling a control of the transport layer connection according to the radio communication state and property of the radio terminal, without changing implementation of the transport layer of a terminal connected to a wire network. The gateway device is provided with a control unit for controlling a connection in the radio transport layer protocol according an information regarding a radio communication state of the radio terminal device, where the information regarding the radio communication state of the radio terminal device is notified from either a radio base station device covering a radio service area in which the radio terminal device is located or a home location register for carrying out at least registration and management of the radio terminal device.Type: ApplicationFiled: July 8, 2002Publication date: December 12, 2002Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masahiro Takagi, Noriyasu Kato, Keiji Tsunoda, Kumiko Nakakita, Katsuya Nounin, Mutsumu Serizawa, Eiji Kamagata
-
Patent number: 5940769Abstract: In a radio communication system, communication for sending data from a transmitting station to a receiving station and communication for transmitting re-send data from the transmitting station to the receiving station according to the re-send request transmitted from the receiving station to the transmitting station are done on different occasions of communication. Hence, in the applications not requiring real time service, this re-send control method does not spend the power and radio resources wastefully, and by effectively utilizing the system resources and lowering the power consumption, the battery of the terminal may be reduced in size, so that the portability of the terminal may be enhanced.Type: GrantFiled: March 27, 1996Date of Patent: August 17, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyasu Nakajima, Koji Ogura, Mutsumu Serizawa, Yoshinari Kumaki, Katsuya Nounin, Eiji Kamagata, Takashi Wakutsu, Tsutomu Sugawara
-
Patent number: 5802469Abstract: A portable terminal includes a first store for storing a first physical address including a serial number of the terminal, a second store for storing a first logical address including a subscriber's telephone number, a third store for storing a second physical address of a hardware used for computer communication, a fourth store for storing a second logical address corresponding to the second physical address, an interface for radio LAN, and an interface for PHS system. When a call is originated, a first channel is connected by using the first physical address and the first logical address. The second physical address and the second logical address are transmitted to the network from the call originator's terminal through the first channel, thereby setting in a state enabling communication between computers, and necessary data is transmitted to the call originator's terminal through a second channel by communication between computers.Type: GrantFiled: March 28, 1996Date of Patent: September 1, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Nounin, Takashi Wakutsu, Nobuyasu Nakajima, Koji Ogura, Mutsumu Serizawa, Osamu Moriya, Tsutomu Sugawara, Eiji Kamagata, Yoshinari Kumaki
-
Patent number: 5203027Abstract: Diversity receiver having many diversity branches comprises adaptive equalization sections for equalizing the training signal sampled on the basis of adjustable tap coefficients, and adjusting the tap coefficient every code element in the training signal so as to minimize the intensity of an error signal defined by the difference between the equalized training signal and the already-known training signal, error signal intensity detecting sections for detecting the intensity of the error signal every code element, a switching section for switching to a diversity branch having the minimum signal intensity of error signals in the respective diversity branches.Type: GrantFiled: November 27, 1990Date of Patent: April 13, 1993Assignee: Kabushiki Kaisha ToshibaInventors: Katsuya Nounin, Katsumi Sakakibara, Mutsumu Serizawa, Koji Ogura