Panasonic Corporation

Noritsu Precision Co., Ltd.

Toru Yasukawa

Yuji Igata

Yasushi Yokomitsu

Hisao Koga

Nobutaka Kodama

Koji Ikeda

Shinichiro Ohmi

Tsuyoshi Yamaguchi

Go Kuroda

Kensuke Yoshizawa

Youhei Koide

Tomiya Miyazaki

Junji Yano

Shoichi Dedachi

Masayoshi Uetsuji

Takeshi Murai

Shuichi Matsumoto

Masahiko Haraguchi

Masanori Kataoka

Provided is a monitoring apparatus in which the installation position of an imaging unit is not restricted, settings can be easily changed, and it is possible to accurately analyze behavior of a monitoring target. The present invention is a monitoring apparatus for monitoring behavior of a monitoring target, and includes an imaging unit; a display unit that displays the monitoring target imaged by the imaging unit in real time and displays a marker for specifying the position of the monitoring target; a first input unit that receives input of an installation position of the imaging unit relative to the monitoring target; a first storage unit storing monitoring environment data that defines, in advance, an environment around the monitoring target that is to be imaged by the imaging unit, in accordance with the installation position.

Monitoring apparatus

PLC modems and a PLC communication system that includes the PLC modems receive a multicast packet from a video server of a multicast group. When a MAC address table is set therein, the PLC modems and the PLC communication system convert the multicast packet into a unicast packet and transmit the converted packet to a power line. When no MAC address is set, the PLC modems and the PLC communication system transmit the multicast packet to the power line.

Power line communication apparatus, power line communication method and communication apparatus

A communication apparatus improves the throughput of a whole communication system while performing contention distributed control which provides equality of a transmission chance by observing a medium occupation state. The communication apparatus includes a back-off process section for performing, using a contention window, a regular back-off process which is performed at transmission of a transmission frame and a pseudo back-off process which is performed in a pseudo manner when the transmission frame is not transmitted. The communication apparatus also includes a medium information obtaining section for obtaining, by the pseudo back-off process, medium information indicative of a state of the transmission line medium when the transmission frame is not transmitted, and a medium state determination section for determining the state of the transmission line medium using the medium information to obtain determination information.

Communication apparatus for performing contention control

A plurality of PLC adapters, such as a masterand slaves, are connected to a power line, which forms a PLC logic network. Electric apparatuses, such as a television monitor and a video recorder, are connected to the masterand the slavesthrough repeaters. The masteris a control terminal having the function of QoS controller. The masterallocates timeslots for transmitting data over a network, acquires information on the actual data transmission rate detected by a data receiving terminal, and modifies the timeslot allocated to target data on the basis of the acquired information on the actual data transmission rate.

Method, apparatus and integrated circuit for controlling transmission rate

A terminal for performing multiple access transmission suitable to a transmission path having varied characteristics includes a transmission/reception section, a control unit, a transfer management section, and an external interface section. Specifically, the terminal refers to an IGMP (MLD) message received by the transmission/reception section to classify a transmitter host and a relay device of the message based on a characteristic of the transmission path, and performs a multiple access transmission of a multicast packet in a form suitable to the characteristic of the transmission path.

Terminal for performing multiple access transmission suitable to a transmission path having varied characteristics

Growing community of inventors

Wakayama, Japan

Toru Yasukawa