Buffalo Inc.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Daisuke Yamada

Eiichi Ono

Masato Kato

Yuji Muragishi

Satoru Yamaguchi

Yoshikatsu Kisanuki

Hiroshi Katano

Hidekazu Nishigaki

Shinsuke Sato

Nagahiro Matsuura

Yasuo Asaga

Atsushi Suzuki

Atsushi Kawaguchi

Hainian Song

Tomoaki Ohara

Hidenori Yukawa

Tomoko Abe

When radar/radio signals are detected by one of two access points establishing communication in a WDS mode, the one access point notifies the other access point of a change of a communication channel to a newly allocated channel and actually changes the communication channel to the newly allocated channel. The other access point notified of the newly allocated channel performs a passive scan at the notified newly allocated channel to detect a beacon broadcasted by the one access point. In response to detection of the beacon, the other access point resets the communication channel to the notified newly allocated channel. The two access points can accordingly reestablish communication in the WDS mode within a short time period. This arrangement allows for a quick channel change in response to detection of radar/radio signals, such as a weather radar, during communication of a 5 GHz frequency band in the WDS mode.

Device, system, and method for establishing wireless communication between LANS

A relay apparatus converts a received multicast frame to a unicast frame, sets a relatively higher communication rate than a specified communication rate, and forwards the converted unicast frame to a communication apparatus at the relatively higher communication rate. The relay apparatus attaches conversion information, which represents execution of the conversion, to the unicast frame. On reception of a unicast frame from the relay apparatus, the communication apparatus determines whether the received unicast frame is the converted unicast frame from the multicast frame, based on the conversion information attached by the relay apparatus. Upon determination that the received unicast frame is the converted unicast frame, the communication apparatus reconverts the received unicast frame to a multicast frame and transfers the reconverted multicast frame to an application installed in the communication apparatus to utilize a multicast frame. This arrangement enables the communication apparatus to effectively utilize a received unicast frame that is a converted unicast frame from a multicast frame.

Relay apparatus, communication apparatus, communication system, and frame transfer method

A relay device performing wireless communication with a wireless communication device to relay communication between the wireless communication device and another communication device. First and second relay modes of the relay device each include a set of communication parameters for relaying communication via respective first and second communication paths. The relay device includes a communication failure determination section for determining, whether there is a communication failure in the first communication path, and a relay mode controlling section for enabling the first relay mode and disenabling the second relay mode when there is no communication failure in the first communication path, and disenabling the first relay mode and enabling the second relay mode when there is a communication failure in the first communication path. A communication control section controls communication based on either the first relay mode or the second relay mode that is enabled by the relay mode controlling section.

Communication relay device, communication relay method, and storage medium having communication relay program stored therein

Connection determination methods are applied to determine whether relay of communication between one or more wireless communication devices and a wireless communication device which is different from the communication devices is permissible, and when a positive determination result is obtained by applying at least one of the methods, the relay is permitted by applying at least one of the methods. When the relay of communication is permitted by the permissible connection determination, the relay is executed.

Communication relay device and communication relay method

Disclosed is a relay apparatus for forwarding a received multicast frame to a communication apparatus at a specified communication rate. The relay apparatus converts the received multicast frame to the corresponding unicast frame, sets a relatively higher communication rate than the specified communication rate, and forwards the converted unicast frame to the communication apparatus at the relatively higher communication rate. The relay apparatus determines whether or not the availability of the converted and forwarded unicast frame by an application is ascertained based on a condition, and prohibits conversion to the unicast frame when the availability is negated. This configuration enhances the user's convenience in the relay technique of converting multicast frames to unicast frames and forwarding the converted unicast frames.

Relay apparatus, communication apparatus, communication system, and relay method

A transmitting apparatus for transmitting user data, includes: an establishing section that establishes three or more transmission paths for a receiving apparatus; a first generation section that generates a user data unit which includes user data to be transmitted to the receiving apparatus; and a second generation section that generates an error correction data unit which includes error correction data to be used for error correction of the user data to be transmitted to the receiving apparatus. At least one of the three or more transmission paths transmits the error correction data unit, and at least two of the three or more transmission paths transmits the user data unit.

Transmitting apparatus and transmission method

Provided is a communication device for utilization in a communication network. The communication device includes a communication process section for controlling communications in the communication network, a battery for supplying power to the communication process section, a battery control section for controlling supplying of power to the battery, a sub-board temperature detection section for detecting temperature of a battery housing section, and a temperature control section for, (A) when charging of the battery is underway and the temperature detected by the sub-board temperature detection section is outside a predetermined first charging-temperature range, controlling the battery control section to halt the charging of the battery, and, (B) when supplying of power from the battery to the communication process section is underway and the temperature detected by the sub-board temperature detection section is outside a predetermined first discharging-temperature range, halting the supplying of power from the battery to the communication process section.

Communication device and communication device control method

A portable device configured to be connected to a router via a wireless or wired connection. The portable device includes a first processing section that operates in each of a first operation mode to serve as a bridge functional part and a second operation mode to serve as a router functional part. The first processing section operates in the first operation mode when the portable device is connected to the router.

Portable device and method, computer program product and computer readable recording medium for setting operation mode for packet transfer

A target value for yaw angle velocity gain is computed according to a map expressing a relationship between steering wheel angle and yaw angle velocity gain predetermined such that a direction as seen from a driver of a target destination point for vehicle travel at a predetermined time after a forward gaze and a direction as seen from the driver are caused to match each other, and a steering gear ratio is controlled accordingly. A target value for a steering wheel torque corresponding to the detected steering wheel angle and the acquired yaw angular velocity is set, based on a relationship between yaw angular velocity and resistance-feel level predetermined such that the resistance feel level for a driver monotonically increases with increasing yaw angular velocity. Control is then preformed so as to realize the steering wheel torque target value.

Steering apparatus, steering method, and computer readable storage medium

A safety device for a vehicle, capable of relaxing a collision load acting on a colliding body. The safety device () for a vehicle has colliding body receiving sections (), and opposite longitudinal ends of each colliding body receiving section () are bent to form legs () having ends (A). The ends (A) are fixed to side frames () on the vehicle body side to form impact absorption members (). The safety device () is adapted so that, while supporting a collision load, the impact absorption members () are displaced to absorb collision energy of the colliding body. The impact absorption members () can produce displacement regions that acts against an increase in the displacement in the direction of collision to suppress an increase in supporting load.

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Nagoya, Japan

Daisuke Yamada