1
Masayuki Kumazawa, Yuji Shimizu: Data terminal equipment. Matshushita Electric Industrial, Wenderoth Lind & Ponack L, June 6, 2006: US07058810 (13 worldwide citation)

A data terminal equipment retrieves index data indicating content data. Then, the data terminal equipment authenticates the content data based on the index data. Only if the authenticity of the content data has been confirmed, the data terminal equipment retrieves the content data from a first serve ...


2
Shinkichi Ikeda, Masayuki Kumazawa, Makoto Funabiki: Multi-interface communication device, terminal, and path switching method. Panasonic Corporation, RatnerPrestia, February 22, 2011: US07894383 (6 worldwide citation)

A router, if judging that a routing function is impossible to execute, sends out a connection instruction message including the address of a terminal on a local network terminating the relaying flow, to another router to solicit switching. The router having received the connection instruction messag ...


3
Hirokazu Kobayashi, Taisuke Matsumoto, Shinkichi Ikeda, Makoto Funabiki, Masayuki Kumazawa, Toyoki Kawahara: Network connection apparatus and network connection switching method. Matsushita Electric Industrial, RatnerPrestia, October 7, 2008: US07433317 (6 worldwide citation)

Between network connection apparatuses connected to each other by use of a virtual redundant arrangement, a first network connection apparatus that is in a standby state receives an advertisement message from a second network connection apparatus that is active as a network connection apparatus, and ...


4
Masayuki Kumazawa, Mikio Shimazu, Yuji Shimizu: Apparatus and method for packet transmission. Matsushita Electric Industrial, Darby & Darby, October 10, 2006: US07120159 (5 worldwide citation)

A packet transmission apparatus transfers arriving packets directly to a highest-priority queue under non-congestion conditions, and classifies the priority of a packet only on the existence of congestion. In one embodiment, non-congestion is determined when all queues are empty. In another embodime ...


5
Masayuki Kumazawa, Taisuke Matsumoto: Mobile router, home agent, and terminal position management method. Panasonic Corporation, RatnerPrestia, February 5, 2013: US08369293 (3 worldwide citation)

In a mobile network system composed of plural mobile networks and a home agent, the home agent inquires mobile routers in a mobile network whether or not a terminal is connected, if detecting the absence of the terminal, when data addressed to the terminal arrives at a home network of the terminal i ...


6
Masayuki Kumazawa, Taisuke Matsumoto, Shinkichi Ikeda, Hirokazu Kobayashi, Makoto Funabiki, Toyoki Kawahara: Routing control method, router, and terminal. Panasonic Corporation, RatnerPrestia, July 27, 2010: US07764696 (2 worldwide citation)

When the routing function of router becomes disabled, a routing stop message is multicast to all terminals and another router in a LAN. If another router can provide the routing function, a routing start message is multicast to all terminals and the other router in the LAN. This method allows the te ...


7
Masayuki Kumazawa, Taisuke Matsumoto, Yasuhiko Watanabe: Moving router, home agent, router position registration method, and moving network system. Panasonic Corporation, RatnerPrestia, March 22, 2011: US07911973 (2 worldwide citation)

When first mobile router, which has a MNP, generates a key which corresponds to that MNP and transmits a registration request packet including the key to home agent, home agent stores the MNP and key of the first mobile router, and sends main mobile router registration approval. When first mobile ro ...


8
Shinkichi Ikeda, Masayuki Kumazawa, Makoto Funabiki: Multi-interface communication device, terminal, and path switching method. Panasonic Corporation, RatnerPrestia, July 16, 2013: US08488486 (1 worldwide citation)

A router, if judging that a routing function is impossible to execute, sends out a connection instruction message including the address of a terminal on a local network terminating the relaying flow, to another router to solicit switching. The router having received the connection instruction messag ...


9
Toyoki Kawahara, Taisuke Matsumoto, Shinkichi Ikeda, Hirokazu Kobayashi, Masayuki Kumazawa, Makoto Funabiki: Mobile router, position management server, mobile network management system, and mobile network management method. Matsushita Electric Industrial, RatnerPrestia, October 30, 2007: US07289471 (1 worldwide citation)

When connected to an external network, a mobile router checks an address 0table if a home address is allocated. If it is not allocated, the mobile router derives the address of a position management server from a position-management-server address table and sends an allocation request message to the ...


10
Masayuki Kumazawa, Taisuke Matsumoto, Shinkichi Ikeda, Hirokazu Kobayashi, Makoto Funabiki, Toyoki Kawahara: Router selecting method and router apparatus. Panasonic Corporation, RatnerPrestia, March 3, 2009: US07499396 (1 worldwide citation)

A router includes a multicast packet transmitting unit that multicasts the identifier of the router periodically, a relay determining unit that determines whether a received data packet should be relayed to a router in another segment, an order determining unit that determines, on the basis of infor ...