Fujitsu Corporation

Ichiro Kagami

Hiroshi Watanabe

Yuichi Terui

Tsuyoshi Miura

Noriyuki Ihara

Junichi Sawada

Kazuyuki Inomoto

Michiko Mizoguchi

Hiroaki Shiraishi

Shinji Takao

Yoshinobu Takagi

Masaru Nishida

Masao Mutou

Kyouhei Tanaka

Yushi Nobayashi

Mineo Kotegawa

A receiving unit receives a group of packets transmitted from a transmitting apparatus. A detecting unit detects a missing packet based on the received group of packets. A first output unit outputs data corresponding to the group of packets, irrespective of a result of the detection by the detecting unit. A transmitting unit transmits a retransmission request for the missing packet to the transmitting apparatus. A re-receiving unit receives the missing packet retransmitted from the transmitting apparatus in response to the retransmission request. A second output unit outputs data corresponding to the group of packets and the retransmitted packet.

Receiving apparatus and receiving method

A method is disclosed for setting a master node of a ring network that has adjacently connected nodes situated on rightward and leftward lines of a bidirectional transmission channel. The method includes the steps of: counting the number of nodes interposed between a designated node and each node other than the designated node on the rightward and leftward lines of the bidirectional transmission channel; and setting one of the nodes as the master node. The master node satisfies a relation of, NHC_L=NHC_R or NHC_L=NHC_R-, wherein NHC_L is the number of interposed nodes counted from the leftward line, and NHC_R is the number of interposed nodes counted from the rightward line.

Method and apparatus for setting master node of ring network

In an image monitor apparatus for monitoring an image: a camera picks up an image; an emission control unit controls at least one light emitting element; an image signal acquiring unit performs analog-to-digital conversion of the image picked up by the camera so as to generate a digitized image signal, and stores the digitized image signal; a luminance examining unit examines luminance of the image represented by the digitized image signal, and determines whether or not the amount of light detected and stored in an image-pickup plane of the camera is appropriate; and a luminance control unit controls at least one of the camera and the luminance control unit so that the amount of light stored in an image-pickup plane becomes appropriate.

Image monitor apparatus controlling camera and illumination in order to optimize luminance of picked-up image

Growing community of inventors

Kawasaki, Japan

Ichiro Kagami