Abstract: Disclosed is a wireless LAN (Local Area Network) system which overcomes a troublesome operation and process of setting QoS needed for each LAN at the time of using various LANs in a home, an office, countless Hotspots and so forth. The wireless LAN system has a terminal and LAN control section. The terminal has a QoS (Quality of Service) analyzing/setting section which requests of the LAN control section for a QoS management table as a QoS policy to manage QoS of communication data at the time of establishing connection to a wireless LAN, analyzes the table sent from the LAN control section in response to the request, sets QoS setting data based on the result of that analysis, and sends the data to the LAN control section.

Abstract: In a wireless network service provision method of providing communication services including internet connection by permitting access to a predetermined access point in a limitative area via wireless LAN or like local wireless interface, when a user subscribed to the communication service system accesses the pertinent access point, payload processing is executed in unique processing method to each user, and each user is discriminated according to data of the processed parts.

Abstract: An adding unit of a broadcasting apparatus attaches entry information to a content to be broadcast. The entry information specifies a content that is identical to the content to be broadcast out of a plurality of contents available for distribution by a distributing apparatus. A sending unit of the broadcasting apparatus broadcasts the content with the entry information attached thereto. An entry information recording unit of a recording apparatus records the entry information that is attached to the received content to a hard disk, and a requesting unit requests the distributing apparatus to distribute the content specified by the recoded entry information. A content distributing unit of the distributing apparatus receives the distribution request, and distributes the requested content to the recording apparatus. The recording apparatus plays back the distributed content.

Abstract: A grinding method for a wafer having a plurality of devices on the front side, wherein the back side of the wafer is ground by a grinding wheel to suppress the motion of heavy metal in the wafer by a gettering effect and also to maintain the die strength of each device at about 1,000 MPa or more. The grinding wheel is composed of a frame and an abrasive member fixed to the free end of the frame. The abrasive member is produced by fixing diamond abrasive grains having a grain size of less than or equal to 1 ?m with a vitrified bond. A protective member is attached to the front side of the wafer and the wafer is held on a chuck table in the condition where the protective member is in contact with the chuck table. The grinding wheel is rotated as rotating the chuck table to thereby grind the back side of the wafer by means of the abrasive member so that the average surface roughness of the back side of the wafer becomes less than or equal to 0.

Abstract: A main unit of a key telephone system accommodates a plurality of terminal units of the key telephone system that use a LAN within company as extension lines and exchange calls with outside lines. The main unit of the key telephone system has a function as an IP server for the terminal units and stores and manages a database of information in a storing device. A terminal unit of the system accesses an IP address of the main unit of the key telephone system, and logs in to the main unit with predetermined first ID and password. The main unit of the key telephone system authenticates the first ID and password and registers the terminal unit of the key telephone system as an IP extension terminal unit, and allows the KTS terminal unit to voice communicate with another terminal unit of the key telephone system in accordance with the VoIP.

Abstract: An internet connection service providing method and internet connection service system for carrying out the method are provided. The method comprises presetting a service class for a user, among a plurality of service classes, where the service class is selected by the user, authenticating the user according to the preset service class when the user logs-in to a network, recognizing the preset service class for the user, and providing a service corresponding to the recognized service class.

Abstract: 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.

Abstract: A layout verification program recorded on a computer-readable medium causes a computer to perform verification processing of a layout data of a semiconductor integrated circuit in which a plurality of cells are placed. The layout data includes a first identification layer in which predetermined patterns are placed. The predetermined patterns include: a first pattern placed on one corner of each cell; and a second pattern placed parallel to one side of each cell. The verification processing includes: (A) reading the layout data and a design rule from a memory device; (B) identifying an orientation of each cell by reference to the first pattern; (C) identifying a direction of each cell by reference to the second pattern; and (D) verifying whether or not the identified orientation and direction meet the design rule.

Abstract: A first wireless LAN base station is in an active state. A second wireless LAN base station is in a power off state or a power save mode. The first wireless LAN base station and the second wireless LAN base station are disposed in the same support area. When a fault occurs in the first wireless LAN base station and a communication state of the wireless LAN deteriorates, the first wireless LAN base station detects the fault and places the second wireless LAN base station in the active state. When the first wireless LAN base station confirms that the second wireless LAN base station has been placed in the active state, the first wireless LAN base station sends setting thereof to the second wireless LAN base station. When the first wireless LAN base station confirms that the setting of the second wireless LAN base station is the same as the setting of the first wireless LAN base station, the first wireless LAN base station enters the power off state or the power save mode.

Abstract: A product information marking method including a back side grinding step for grinding the back side of a wafer having a plurality of devices formed on the front side so as to be partitioned by a plurality of separation lines, thereby obtaining a desired thickness of the wafer. After performing the back side grinding step, a marking step for marking product information on the back side of each device by applying a laser beam to the back side of the wafer is performed before separating the devices from each other. Thus, the product information is marked on each device in the stage of the wafer.

Abstract: In the QoS control system of the wireless LAN network including the wireless LAN access points, and the wireless LAN terminals to be connected thereto, the wireless LAN access point authenticates the user on the basis of the recorded user's authentication information when the user carries out the authentication request from the wireless LAN terminal. The wireless LAN access point is connected to the servers to notify the wireless LAN access point of the information for identifying the wireless LAN terminal and the recorded user's QoS service content through the communication network. The wireless LAN access point and the wireless LAN terminal carry out the priority control in accordance with the priority information of the QoS service from the server. Even when the terminal to be used is changed, if the same user logs onto the certificate server by using the same authentication information, the same QoS service can be offered consistently.

Abstract: In a wireless LAN base station device including plural antennas for making communications with a wireless terminal, plural transmission-reception portions connected to the plural antennas, plural control processors for controlling the plural transmission-reception portions, and a central processor for controlling the plural control processors, each transmission-reception portion measures a reception level or/and each control processor measures a communication error occurrence rate, and the central processor controls the plural control processors to select a transmission-reception portion so that the reception level is maximum or/and the communication error occurrence rate is minimum. The control processors cease prescribed transmission-reception portions for a time zone in which the communication load is low.

Abstract: 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.

Abstract: A system for connecting a portable information equipment and an extension telephone, comprises: an extension telephone connecting device for connecting the portable information equipment to an extension telephone system after authentication through a virtual private network (VPN); and a Voice over Internet Protocol (VoIP) connecting device for connecting the portable information equipment connected to the extension telephone system to the extension telephone connected to the extension telephone system by VoIP. This system enables a temporary staff to make a call from outside to an extension telephone system in a dispatched company while maintaining security.

Abstract: The address linker of an LDAP client has a capability of requesting retrieval of data in local files or retrieval of data in files registered on an LDAP server. The address linker of the LDAP server serves to share personal data and has a capability of retrieving data in files on the server and a capability of responding to data retrieval and registration request from the LDAP client. The LDAP client or server outputs a list of retrieval results and highlights latest data according to the updating date and time determined when pieces of personal data of the same name are registered in a plurality of files. The LDAP client or server further select latest data, reconstruct the data into a single file having a tree data structure and saves the file.

Abstract: 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.

Abstract: This invention provides a wireless LAN base station capable of accommodating all of the client terminal stations if the number of client terminal stations wirelessly connected to the wireless LAN base station increases and capable of reducing power consumption if the number of wireless client terminal stations decreases. This wireless LAN base station includes at least two wireless LAN modules, each of which are capable of holding the wireless communication with at least one client terminal station, a section for detecting the number of client terminal stations that are being holding the wireless communication with the wireless LAN base station; and a section for changing the number of active wireless LAN modules according to the detected number of the client terminal stations.

Abstract: A terminal device, includes: a device driver section for controlling an interface section that is connected to a network; a protocol stack section that is connected to the network via the device driver section based on a communication protocol at higher than or equal to layer3 of OSI; and a middleware section that is interposed between the protocol stack section and the device driver section. If a send request for a frame to be sent is issued from the protocol stack section, the middleware section determines a priority of the send request based on header information at layer2 to layer4 of OSI within the send frame, and outputs the send request to the device driver section according to the priority determined.

Abstract: When transmitting voice data, correction codes each representing data of one data packet are added to the transmitted data from the outset. Thus, it is made possible to restore one data packet lost for the first time, and when and only when two successive data packets are discarded, one packet data is lost. In this way, the data discarding endurance is improved.

Abstract: Disclosed is a bridge apparatus for the relay of a frame between a wire LAN and a wireless LAN. When a frame transmitted by the wire LAN is a specific frame, a QoS middleware unit of the bridge apparatus adds a bridging request to an FIFO queue having a high priority. And when the frame received from the wire LAN is not a specific frame, the QoS middleware unit adds a bridging request to an FIFO queue having a low priority. A bridging unit performs the priority processing for the bridging request present in the FIFO queue having a high priority, and transmits the frame to the wireless LAN.