1
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 ...


2
Masaru Murakami, Yozo Oguri, Yoshihiro Ashi, Katsuyoshi Tanaka, Takahiko Kozaki, Akihiko Takase, Morihito Miyagi: Cell multiplexer having cell delineation function. Hitachi, Antonelli Terry Stout & Kraus, October 29, 1996: US05570368 (59 worldwide citation)

A cell multiplexer includes a multiplexing unit for time-divisionally multiplexing ATM cell signals given from a plurality of input lines, a write controller for storing cell signals outputted from the multiplexing unit in a buffer memory successively correspondingly to the input lines, a read contr ...


3
Takahiko Kozaki, Morihito Miyagi, Manabu Okamoto: ATM switching system and cell control method. Hitachi, Antonelli Terry Stout & Kraus, June 25, 1996: US05530698 (44 worldwide citation)

An ATM switching system which includes PVC allocation circuits corresponding to output queues. At the time of arrival of the leading cell of each burst data, if the output line has room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving ce ...


4
Morihito Miyagi, Yutaka Ito, Kenichi Oka, Yasushi Takagi: ATM communication apparatus and failure detection and notification circuit. Hitachi, Nippon Telegraph and Telephone Corporation, Antonelli Terry Stout & Kraus, October 24, 1995: US05461607 (27 worldwide citation)

In an ATM communication apparatus, the same failure detection process is conducted for the detection of a failure state of a VP when a transmission line of the apparatus fails and the detection of the failure state of the VP when a VP-AIS cell generated by another apparatus is received. When an AIS ...


5
Masaru Murakami, Yozo Oguri, Yoshihiro Ashi, Katsuyoshi Tanaka, Takahiko Kozaki, Akihiko Takase, Morihito Miyagi: Cell multiplexer having cell delineation function. Hitachi, Hitachi ULSI Engineering, Antonelli Terry Stout & Kraus, June 16, 1998: US05768274 (25 worldwide citation)

A cell multiplexer includes a multiplexing unit for time-divisionally multiplexing ATM cell signals given from a plurality of input lines, a write controller for storing cell signals outputted from the multiplexing unit in a buffer memory successively correspondingly to the input lines, a read contr ...


6
Morihito Miyagi, Junichirou Yanagi: ATM network system and connection admission control method. Hitachi, Antonelli Terry Stout & Kraus, April 13, 1999: US05894471 (24 worldwide citation)

Apparatus for executing the connection admission control for PVC and SVC efficiently in an ATM network system which includes a network management equipment and a network equipment. The control function of the network management equipment executes resource allocation to PVC and SVC and notifies the n ...


7
Morihito Miyagi: Node device and alarm notification control method for ATM network. Hitachi, Antonelli Terry Stout & Kraus, February 2, 1999: US05867481 (23 worldwide citation)

In an asynchronous transfer mode (ATM) network, if an originating terminal notifies necessity or unnecessity of transmitting a fault notification signal through a call set-up message, the content of the notification is notified to respective node devices on a target virtual path (VP) in the procedur ...


8
Morihito Miyagi: Defect notification method in a multipoint ATM network. Hitachi, Antonelli Terry Stout & Kraus, May 6, 1997: US05627821 (12 worldwide citation)

A defect notification method and apparatus for use in a multipoint ATM network so as to avoid the transmission of defect notification cells in an overlapped manner. In the invention when a connecting point detects a defect in a lower layer and when the connecting point is not a branching point the c ...


9
Morihito Miyagi: Usage parameter control and performance monitoring apparatus used for cell stream in ATM network. Hitachi, Antonelli Terry Stout & Kraus, August 26, 1997: US05661722 (7 worldwide citation)

A usage parameter control and performance monitoring apparatus used for cell stream in an ATM network monitoring the performance of cell streams in includes a UPC unit for receiving an input cell stream and executing the UPC processing of the input cell stream; and receiving unit the for receiving t ...


10
Takahiko Kozaki, Morihito Miyagi, Manabu Okamoto: ATM switching system and cell control method. Hitachi, Antonelli Terry Stout & Kraus, May 14, 2002: US06389026 (7 worldwide citation)

An ATM switching system which includes PVC allocation circuits corresponding to output queues. At the time of arrival of the leading cell of each burst data, if the output line has room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving ce ...