Abstract: A wireless mesh network system includes a plurality of wireless devices and is adapted to forward a message packet. Each of the wireless devices includes a transmitter, a receiver, a communications controller, and a RAM. Further, the communications controller detects a reception completion time of a message packet received, and controls such that, if the wireless device had performed forwarding the message packet received right before, a carrier sense time, which is the time from the reception completion time to the forwarding start, is set to be longer than a previously set carrier sense time, and if the corresponding wireless device had not performed forwarding the message packet received right before, the carrier sense time is set to be shorter than the previously set carrier sense time.

Abstract: A wireless mesh network system having a plurality of wireless devices is adapted to forward a message packet. Each of the wireless devices includes a transmitting unit, a receiving unit, a communications controller, and a RAM. Further, if a message packet received is an acknowledgement signal, the communications controller controls such that an original source address, a destination address, and a packet number contained in the acknowledgement signal are stored in the RAM, and, in case the message packet received is a data signal, if information contained in the message packet received is consistent with the original source address, the destination address, and the packet number contained in the acknowledgement signal stored in the RAM, the communications controller controls such that the acknowledgement signal is forwarded to a original source wireless device.

Abstract: A wireless mesh network system includes a plurality of wireless devices adapted to forward a message packet. Each of the wireless devices includes a transmitting unit, a receiving unit, a communications controller, and a RAM. Further, the communications controller controls such that an original source address contained in a message packet forwarded by a wireless device, which is an address of the wireless device that has firstly transmitted the message packet, and a packet number that identifies the message packet are stored in the RAM, and controls such that a message packet received is forwarded if information contained in the message packet received is not consistent with information of the original source address and the packet number stored in the RAM.

Abstract: A wireless mesh network system includes a plurality of wireless devices and is adapted to forward a message packet. Each of the wireless devices includes a transmitter, a receiver, a communications controller, and a RAM. Further, the communications controller detects a reception completion time of a message packet received, and controls such that, if the wireless device had performed forwarding the message packet received right before, a carrier sense time, which is the time from the reception completion time to the forwarding start, is set to be longer than a previously set carrier sense time, and if the corresponding wireless device had not performed forwarding the message packet received right before, the carrier sense time is set to be shorter than the previously set carrier sense time.

Abstract: A wireless mesh network system having a plurality of wireless devices is adapted to forward a message packet. Each of the wireless devices includes a transmitting unit, a receiving unit, a communications controller, and a RAM. Further, if a message packet received is an acknowledgement signal, the communications controller controls such that an original source address, a destination address, and a packet number contained in the acknowledgement signal are stored in the RAM, and, in case the message packet received is a data signal, if information contained in the message packet received is consistent with the original source address, the destination address, and the packet number contained in the acknowledgement signal stored in the RAM, the communications controller controls such that the acknowledgement signal is forwarded to a original source wireless device.

Abstract: A wireless mesh network system includes a plurality of wireless devices adapted to forward a message packet. Each of the wireless devices includes a transmitting unit, receiving unit, a communications controller, and a RAM. Further, the communications controller controls such that an original source address contained in a message packet forwarded by a wireless device, which is an address of the wireless device that has firstly transmitted the message packet, and a packet number that identifies the message packet are stored in the RAM, and controls such that a message packet received is forwarded if information contained in the message packet received is not consistent with information of the original source address and the packet number stored in the RAM.

Abstract: A dry gray-scale image processor can be made small and light, and the work area and space required by the processor can be used more efficiently. The dry gray-scale image processor extracts unexposed films one by one and carries them to an exposure unit, radiates a laser beam comprising an image data signal onto the film as it passes said exposure unit, and develops the exposed film by heating at a heating unit. The interval between an exposure position of the exposure unit and a heat start position of the heating unit is shorter than the length of the film in the delivery direction, and the processes of exposure and heating can be performed in parallel simultaneously.

Abstract: For forming multiple images on a single sheet of film (F) for medical use, specific data to the film (F) such as a patient name are extracted from one of the images, and the extracted data are enlarged, and the enlarged data are output to an optical processing system, of which exposing position is controlled, and then the data is exposed onto the film (F) in a designated location, for example, at the bottom of the film (F) thereby.

Abstract: A double-faced vacuum fluorescent display of the invention is formed of an outer casing, and first and second display portions. The outer casing includes a base plate, a transparent front plate situated in front of the base plate, and a side member situated between the base plate and the front plate to form a space therebetween. The first display portion is mounted on the base plate, and includes a wiring pattern, an insulating layer with light shielding property, a first anode conductor and a first fluorescent layer. A display on the first display portion can be observed only from the front plate side. The second display portion is mounted on the transparent front plate, and includes a second anode conductor with transparency and a second fluorescent layer. The second display portion has a light transmitting portion for observing the first display portion therethrough.