1
Masato Tsukakoshi, Yasuhiro Takahashi, Matsuaki Terada, Nobuyuki Takagishi: Network system comprising a plurality of LANs using hierarchical routing. Hitachi, Antonelli Terry Stout & Kraus, May 21, 1991: US05018133 (174 worldwide citation)

In a network system according to the hierarchical routing method, in which at least one main LAN and a plurality of sub-LANs are connected hierarchically through bridges, bridge IDs having the smallest values in the network are given to a plurality of bridges (first bridges) connected to the main LA ...


2
Matsuaki Terada, Hiroshi Wataya, Satoru Takagi, Masao Sueki: System for locating resources resided in a distributing processing system by sequentially transmitting resource inquiries through a looped transmission line. Hitachi, Antonelli Terry Stout & Kraus, July 10, 1990: US04941084 (120 worldwide citation)

A resource management system and method in a distributed processing system in which a plurality of computers are interconnected through a transmission line. A computer makes, upon accessing to a resource of another computer, inquiries about "Whether the intended resource exists" and "Ordering that i ...


3
Tetsuhiko Hirata, Susumu Matsui, Matsuaki Terada, Tatsuya Yokoyama, Sinichi Kouyama: Communication protocol for predicting communication frame type in high-speed processing system. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, October 8, 1991: US05056058 (104 worldwide citation)

A protocol high-speed processing method to be used in a first communication control equipment for communications with a second communication equipment connected through a transmission line in accordance with a predetermined communication protocol. The communication control equipment predicts the typ ...


4
Tatsuya Yokoyama, Susumu Matsui, Matsuaki Terada, Tetsuhiko Hirata, Mika Mizutani: Protocol processing apparatus for use in interfacing network connected computer systems utilizing separate paths for control information and data transfer. Hitachi, Antonelli Terry Stout & Kraus, April 12, 1994: US05303344 (101 worldwide citation)

A communication control equipment connected between a computer and a network so as to perform protocol processing at a high speed, has a buffer memory connected between a computer interface circuit and a network interface circuit through a first path for data transfer, so as to temporarily store com ...


5
Michio Suzuki, Matsuaki Terada, Takao Kato, Ryuichi Toki: Speech packet switching method and device. Hitachi, Antonelli Terry & Wands, June 5, 1984: US04453247 (100 worldwide citation)

In a speech packet switching system, an input speech signal to a speech packet transmitting station is converted to a digital signal to form speech data blocks, which are discriminated to talkspurt blocks and silence blocks, and only the talkspurt speech blocks are packetized and transmitted through ...


6
Masato Tsukakoshi, Yasuhiro Takahashi, Matsuaki Terada, Kenji Kusaka: Communication network system having a plurality of different protocal LANs. Hitachi, Antonelli Terry Stout & Kraus, February 4, 1992: US05086426 (87 worldwide citation)

In a network system comprising a plurality of secondary LAN's of different types operable at a relatively low speed, a single primary LAN accommodating the secondary LAN's and operable at a relatively high speed, and a plurality of bridges for connecting the primary LAN and the secondary LAN's, a co ...


7
Tetsuhiko Hirata, Kazuo Yagyu, Matsuaki Terada, Hiroshi Nakase, Shigeru Oshima, Motoyoshi Morito, Takahiko Nishizawa: Communication system for coexistent base band and broad band signals. Hitachi, Yagi Antenna, Pennie & Edmonds, September 22, 1992: US05150365 (51 worldwide citation)

A base-band and broad-band coexisting communication system comprises a transmission path, a plurality of first data terminal units outputting data to be transmitted in the form of pulse signals (base band signals), a plurality of second data terminal units for outputting data to be transmitted in th ...


8
Junji Fukuzawa, Akira Watanabe, Matsuaki Terada, Sadao Mizokawa: Bridge apparatus with an address check circuit for interconnecting networks. Hitachi, Hitachi Cable, Antonelli Terry Stout & Kraus, September 21, 1993: US05247620 (38 worldwide citation)

A bridge apparatus for interconnecting networks in which at least two networks including a plurality of stations are connected, and which, when a transmission frame including an identifier of one station and an identifier of another station of a destination is received from the one station, forwards ...


9
Hisao Sasaki, Matsuaki Terada, Susumu Matsui, Kenji Kawakita, Jiro Kashio, Shiro Baba, Yasushi Akao, Toshio Okochi: Data memory system. Hitachi, Antonelli Terry & Wands, November 14, 1989: US04881167 (37 worldwide citation)

A data memory system includes a plurality of buffer regions each having a constant size so that serial data may be stored by linking the buffer regions. A descripter provided to correspond to each of the buffer regions includes memory region addressing information indicating the head address of the ...


10
Yoshihiro Takiyasu, Toshiki Tanaka, Taihei Suzuki, Eiichi Amada, Yukiji Yamauchi, Mitsuhiro Yamaga, Matsuaki Terada, Kunio Hiyama: High-speed ring lan system. Hitachi, Antonelli Terry Stout & Kraus, September 21, 1993: US05247518 (33 worldwide citation)

A high-speed ring LAN capable of accommodating at least one public network having a signal transmission rate of 155.57 MHz, and at least one sub-LAN having a signal transmission rate of 100 MHz. The high-speed LAN has a signal transmission rate of 155.52 Mbps .times.n (n is an even number). SONET (S ...