摘要:
A wireless communication device comprises a wireless communication unit that performs wireless communication; a connector that enables exchange of a signal with an information processing device; an acquisition unit that acquires setting information when an information processing device connected to the connector uses the wireless communication unit based on the setting information stored in the information processing device; a storing unit that stores the setting information acquired by the acquisition unit; and a communication processing unit that performs communication processing by using the wireless communication unit based on the setting information stored by the storing unit.
摘要:
A beacon slot position control section of a radio communication apparatus constituting a radio network system which detects whether empty beacon slots are present in a beacon period. When an empty beacon slot is present before the period in which the radio communication apparatus transmits a beacon, a movable counter starts counting a specified number of super frames. When the count is completed, the radio communication apparatus transmits a beacon of the radio communication apparatus at the earlier empty beacon slot. Consequently, since the empty beacon slots are eliminated and the beacon period is compacted, even if the number of radio communication apparatuses joining the radio network system fluctuates dynamically, the radio communication apparatus can perform radio communication with high efficiency and less waste of consumed electricity.
摘要:
A beacon is transmitted and received among a plurality of terminals STA. A terminal STA which transmits the beacon is assigned as a representative terminal MSTA which manages a group, and a terminal STA which receives the beacon is assigned as a belonging terminal SSTA of the group. The representative terminal MSTA obtains identification information from the belonging terminal SSTA and stores the identification information. Then, when receiving an AP beacon from a management terminal AP, the representative terminal MSTA collectively transmits, to the management terminal AP, the identification information of the representative terminal MSTA and the belonging terminal SSTA. The management terminal AP performs an authentication procedure, by using the collectively transmitted identification information, for each of all of the communication terminals which form the group.
摘要:
A temperature control method for a heating apparatus including a chamber which can be evacuated and has a conductive portion, a filament which is positioned in the chamber, a first power supply which supplies a current to the filament, a second power supply which applies, to the filament, a voltage for acceleration to the chamber, an ammeter which measures a current of the filament, and a voltmeter which measures the acceleration voltage, the method comprises a first step of evacuating an interior of the chamber; a second step of supplying the filament current from the first power supply to the filament after the first step; a third step of applying the acceleration voltage to the filament after the second step; and a fourth step of controlling the acceleration voltage to keep a surface temperature of the chamber to be lower than a temperature of the filament after the third step while keeping constant the filament current from the first power supply.
摘要:
A radio communication device includes a beacon reception unit extracting a frame from a received beacon and a frame judgment unit judging whether the extracted frame is one requiring data transmission/reception or one giving notice of a collision with a beacon of another network, a frame constructing unit used when the frame judgment unit has judged that the frame is a collision notification, generating a frame for relaying the collision notification and a movement notification to a new beacon transmission period, and a beacon transmission instruction unit instructing transmission of the frame at the beacon transmission timing. Accordingly, since these notifications can be relayed, all radio communication devices of the same network can move to a new beacon transmission period while avoiding a collision with a beacon from a radio communication device of another network.
摘要:
A substrate processing apparatus includes a chamber capable of being evacuated, a substrate stage adapted to mount a substrate, a heating unit adapted to be set above the substrate mounting surface of the substrate stage, face the substrate mounted on at least the substrate mounting surface, and heat the substrate by radiant heat without being in contact with the substrate, a shutter adapted to be retractably inserted in the space between the heating unit and the substrate mounted on the substrate mounting surface, and a shutter driving unit adapted to extend/retract the shutter into/from the space. The substrate is mounted on the substrate stage to face the heating unit, the substrate is annealed by heating the substrate by radiant heat from the heating unit, and the shutter is extended into the space between the heating unit and the substrate stage.
摘要:
A wireless communication method wherein the power consumption can be reduced as compared with the conventional one and a wireless communication apparatus can synchronize its super-frame with the super-frame of another wireless communication apparatus in an ad hoc network. According to this method, in the ad hoc network where a plurality of wireless communication apparatuses use broadband signals to data-communicate with each other, a wireless communication apparatus transmits an end tone (201) for identifying the end of a super-frame (221), and when another wireless communication apparatus receives the end tone (202), it synchronizes the end of its super-frame (221) with the end of the foregoing super-frame (221). In this way, the super-frames (221) can be synchronized even without any beacons.
摘要:
There is disclosed a wireless communication apparatus that does not interrupt synchronous communication but can continuously perform the synchronous communication even when an address duplication occurs between the local wireless communication apparatus and a nearby wireless communication apparatus. A plurality of wireless communication apparatuses constitutes an ad hoc network system where they transmit beacons to each other. In the wireless communication apparatus, an address processing part (145) generates a first address, which includes a beacon period slot number corresponding to the position-on-beacon-period of a beacon generated by the local wireless communication apparatus, and a second address assigned at random. A beacon processing part (140) determines whether the second address generated by the address processing part (145) is coincident with a second address at another wireless communication apparatus. A transmitting part (170) uses one of the first and second addresses generated by the address processing part (145) to transmit a frame to the other wireless communication apparatus.
摘要:
A beacon slot position control section of a radio communication apparatus constituting a radio network system which detects whether empty beacon slots are present in a beacon period. When an empty beacon slot is present before the period in which the radio communication apparatus transmits a beacon, a movable counter starts counting a specified number of super frames. When the count is completed, the radio communication apparatus transmits a beacon of the radio communication apparatus at the earlier empty beacon slot. Consequently, since the empty beacon slots are eliminated and the beacon period is compacted, even if the number of radio communication apparatuses joining the radio network system fluctuates dynamically, the radio communication apparatus can perform radio communication with high efficiency and less waste of consumed electricity.
摘要:
A heating apparatus including a filament arranged in a vacuum heating vessel comprises a base plate arranged in the vacuum heating vessel to fix the filament at a predetermined position with respect to a conductive heater forming one surface of the vacuum heating vessel. The base plate comprises a plate body having a carbon fiber.