摘要:
An automatic changeover method of communication networks includes steps (a) to (d). In the step (a), a first station communicates with a second station through a first wireless communication network. In the step (b), the first station measures a first level fluctuation value more than once, wherein the first level fluctuation value indicates a fluctuation degree of electric field intensity of an electromagnetic wave received from the first wireless communication network. In the step (c), the first station calculates a first average level fluctuation value, wherein the first average level fluctuation value is an average of a plurality of the first level fluctuation values. In the step (d), the first station changes over from the first wireless communication network to a second wireless communication network based on the first average level fluctuation value. The first wireless communication network may be a network for a wireless LAN (Local Area Network), and the second wireless communication network may be a network for a PHS (personal Handyphone System).
摘要:
To provide a wireless LAN system, a sleep mode is set for reducing consumed power and, when an arrival of the own address side is present, wake-up is caused to reliably receive the arrival. Specifically, a plurality of hosts 20 such as PC interconnected with an access point 30 via a wireless LAN each include a wireless LAN device 21, the power supply thereof being turned on and off in synchronism to a beacon signal 32 sent out in a predetermined constant cycle from the access point 30 for checking whether any arrival of data addressed to the own host 20 is present. When any arrival 33 of data is present the host 20 starts an application for reception of the arrived data.
摘要:
A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H2
摘要:
A processing method for a wafer having a device area where a plurality of devices are formed on the front side of the wafer and a peripheral marginal area surrounding the device area. The processing method includes a reinforcing plate forming step of applying a heat-resistant bond to the front side of the wafer and solidifying the heat-resistant bond to thereby form a reinforcing plate from only the heat-resistant bond, a back grinding step of holding the reinforcing plate on a chuck table and grinding the back side of the wafer in the device area to thereby form a circular recess in the device area and leave an annular reinforcing portion in the peripheral marginal area, a through electrode forming step of forming a through electrode connected to an electrode of each device formed on the front side of the wafer, from the back side of the wafer fixed to the reinforcing plate, and a reinforcing plate removing step of supplying a solvent for dissolving the heat-resistant bond to the reinforcing plate, thereby removing the reinforcing plate.
摘要:
There is provided a wireless LAN terminal and a handover method thereof for resolving a sound cutoff and image cutoff which occur when a terminal is moved. The wireless LAN terminal stores BSSID of wireless LAN access points and a frame control in a MAC header of a communication frame in advance. In case of switching a wireless LAN access point for communication, the wireless LAN terminal replaces BSSID of a wireless LAN access point of a communication frame so as to continue the communication.
摘要:
A taste recognizing device has a sensor body and a touch panel. The sensor body includes a sensor part with a sensor probe for measuring taste by means of a molecular film which outputs an electrical signal presenting taste information representing at least one kind of taste, a solution insertion part having insertion sections which are arranged circumferentially at predetermined intervals and in which a solution whose taste is to be measured, a reference taste measurement solution and a cleaning solution are selectively inserted, and an arm drive part for moving the sensor part relative to a predetermined insertion section of the solution insertion part. On the basis of the electric signal outputted from the sensor probe and presenting the taste information, at least measurement for taste recognition of the solution whose taste is to be measured is made possible. The touch panel is structured so that all the items of the operations of the sensor body necessary for measurement for the taste recognition are indicated by buttons for each function and displayed in order on the screen, the operation item corresponding to the operation item is inputted when the user clicks a predetermined button, and thereby all the operations of the sensor body by the user are performed with reference to the display on the screen. With this, the taste recognizing device enables easy taste measurement of the substance whose taste is to be measured by easier operation as a whole.
摘要:
An electricity controller is provided which comprises a first power control means for controlling output power from power generator 4 to a first level during a first period of start-up time for feeding, a second power control means for controlling output power from power generator 4 to a second level lower than first level during a second period after the first period, and a third power control means for controlling output power from power generator 4 to a third level greater than the second level and lower than the first level during a third period after the second period. A discharge tube 2 is heated during the first period for supplying a large amount of electric power to discharge tube 2 to elevate the tube temperature and thereby uniformly disperse mercury vapor in discharge tube 2. Subsequently, while the device maintains the tube at a relatively high temperature during the second period for supplying a small amount of electric power to discharge tube, it can effectively reduce and restrict the release amount of infrared ray from discharge tube 2 in order to enable a remote controller 8 to control a display device immediately after the indication.
摘要:
An adaptor serving for both a mobile phone unit and a private IP telephone unit is disclosed. A mobile phone unit is connected to the adaptor through a low power wireless system or a wired cable. A telephone unit controller manages resource data (data such as telephone directory, telephone history, and mail). A memory editor links a telephone directory of a mobile phone unit and a telephone directory of an IP-PBX in cooperation with a telephone directory controller of the IP-PBX. A VoIP extension line section provides the mobile phone unit with a function of an extension telephone unit in cooperation with the IP-PBX. A QoS controller is a circuit that performs control for minimizing loss of audio data due to communication congestion on a communication path (intranet/Internet). A charging circuit is a circuit that charges a battery of the mobile phone unit. The charging circuit contains a protecting circuit that protects the battery from being overcharged.
摘要:
If a PHS wireless LAN combo is constituted in which a PHS base station and a wireless LAN base station are placed in the same case, their frequency bands are different but they interfere with each other due to an influence of higher harmonics, which decreases communication efficiency. When a PHS base station is in a transmitting state and a wireless LAN base station is in a receiving state, a transmission signal from the PHS base station is multiplied by a predetermined attenuation ratio so as to subtract an attenuated value from a received signal of the wireless LAN base station, and when the wireless LAN base station is in a transmitting state and the PHS base station is in a receiving state, a transmission signal from the wireless LAN base station is multiplied by the predetermined attenuation ratio so as to subtract an attenuated value from a received signal of the PHS base station.
摘要:
A packet compression system of this invention includes: a reception unit for receiving at least one uncompressed packet, the uncompressed packet including a header and a payload of a second OSI layer, the payload of the second OSI layer including a header and a payload of a third OSI layer, the payload of the third OSI layer including a header and a payload of a fourth OSI layer, the payload of the fourth OSI layer including a codec signal; a compression unit for generating a compressed packet in which at least one the codec signal is inserted into the payload of the second layer without interposition of the third OSI layer and the fourth OSI layer by deleting the header of the third OSI layer and the header of the fourth OSI layer from the uncompressed packet; and a transmission unit for transmitting the compressed packet.