1
Akihiko Takase, Masahiro Takatori, Yoshiaki Takemura, Naoya Kobayashi, Yasushi Sawada, Yukio Nakano, Yasushi Takahashi, Masahiro Koya, Yoshitaka Takasaki: Communication network system and method of controlling a communication network. Hitachi, Pennie & Edmonds, August 20, 1991: US05042027 (258 worldwide citation)

A communication network system includes a communication line, a plurality of communication stations each having a node coupled to the communication line and a network controller coupled to the stations for controlling routing for communication messages between nodes. In one embodiment, the messages ...


2
Hajime Abe, Kazuho Miki, Noboru Endo, Akihiko Takase, Yoshito Sakurai: Packet switching network, packet switching equipment, and network management equipment. Hitachi, Sofer & Haroun, January 28, 2003: US06512745 (187 worldwide citation)

This invention provides a network management equipment and a packet switching equipment which eliminate a connection setup delay time, reduce a delay and a delay variation involved in data transfer, and effectively perform connectionless data flow processing in a large data network. The network is d ...


3
Hajime Abe, Kazuho Miki, Noboru Endo, Akihiko Takase, Yoshito Sakurai: Packet switching network, packet switching equipment and network management equipment. Hitachi, Sofer & Haroun, May 16, 2006: US07046630 (151 worldwide citation)

This invention provides a network management equipment and a packet switching equipment which eliminate a connection setup delay time, reduce a delay and a delay variation involved in data transfer, and effectively perform connectionless data flow processing in a large data network. The network is d ...


4
Masataka Takano, Yoji Oka, Akihiko Takase, Setsuo Takahashi: Path changing system and method for use in ATM communication apparatus. Hitachi, Hitachi Communication Systems, Fay Sharpe Beall Fagan Minnich & McKee, February 4, 1997: US05600630 (132 worldwide citation)

An ATM path changing system and method for use in an ATM communication apparatus and ATM communication network are provided which can set an alternating route in the event of a failure occurring in a transmission line or VP. A header converter in a line controller includes a plurality of output path ...


5
Akihiko Takase, Masahiro Takatori, Kazuho Miki, Masaru Murakami, Koji Wakayama, Tetsuro Yoshimoto, Masao Kunimoto: Router apparatus using ATM switch. October 5, 1999: US05963555 (91 worldwide citation)

An LAN interface unit and an ATM switch unit cooperate to perform traffic control. A QoS unit monitors circumstances of an input buffer from a multiplexer of the ATM switch by means of a system controller and when an overflow of the input buffer is expected, the LAN interface unit of the multiplexer ...


6
Takahiko Kozaki, Masahiro Takatori, Noboru Endo, Akihiko Takase, Yozo Oguri: Switching system having means for congestion control by monitoring packets in a shared buffer and by suppressing the reading of packets from input buffers. Hitachi, Antonelli Terry Stout & Kraus, November 17, 1998: US05838677 (91 worldwide citation)

In a switching system connected between a plurality of input lines and a plurality of output lines, destinations of a plurality of cells incoming from the plurality of input lines are monitored to detect an output line in a congestion state. Upon detection of the output line in an congestion state, ...


7
Akihiko Takase, Shiro Tanabe, Noboru Endo, Ryoji Takeyari, Yusuke Mishina, Toshiya Oouchi, Junichirou Yanagi: Multicast communications method. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, March 18, 1997: US05612959 (82 worldwide citation)

Distributed LANs are connected to a wide area network through terminal adapters, which are interconnected by virtual circuits to form a logical bus network. Each terminal adapter copies cells received through the virtual circuit that is allocated for multicasting, and transfers the copied cells to t ...


8
Junichirou Yanagi, Yoshihiro Ashi, Takahiko Kozaki, Akihiko Takase, Takashi Nakashima: Shared buffer memory type ATM communication system and method with a broadcast facility. Hitachi, Nippon Telegraph and Telephone, Antonelli Terry Stout & Kraus, February 28, 1995: US05394397 (76 worldwide citation)

An ATM switching system which includes an input interface which is provided every incoming line and serves to convert header information of each input cell into internal routing information, a shared buffer memory and a cell writing control unit which forms normal cell list structures, which are pre ...


9
Mutsumi Hosoya, Morihito Miyagi, Willy Hioe, Akihiko Takase, Takahiko Kozaki, Toshikazu Nishino: Asynchronous transfer mode switching system. Hitachi, Antonelli Terry stout & Kraus, February 1, 2000: US06021128 (63 worldwide citation)

An asynchronous transfer mode switching system for improving switching throughput and averting complicated and difficult timing design. In operation, synchronous cell strings from external transmission lines are converted to asynchronous cell strings which are switched by a space-division switch arr ...


10
Junichirou Yanagi, Akihiko Takase, Takahiko Kozaki, Shinobu Gohara: Traffic shaping method and circuit. Hitachi, Antonelli Terry Stout & Kraus, January 18, 1994: US05280475 (63 worldwide citation)

A traffic shaping method and circuit of a packet switching system in which input packets having a fixed length and multiplexed on a plurality of inputs are multiplexed to be delivered on any output of a plurality of outputs, connects the input packet to a list structure using an address chain formed ...