Abstract: The wireless communication devices A and B determine the optimal diversity combining weight information that optimizes a diversity reception state at each antenna group A1, A2, . . . , AP through two-way training signal transfer between the wireless communication devices A and B. This optimal diversity combining weight information is set to each antenna of each antenna group A1, A2, . . . , AP. Wireless communication units A?, B? perform spacial mapping of signals from antenna group A1, A2, . . . , AP using MIMO technology. Communication area can be enlarged by hierarchization MIMO using the optimal diversity combining weight information.

Abstract: Wireless communication devices A and B perform wireless communication with the MIMO technology. The wireless communication devices A and B determine the optimal diversity combining information that optimizes a diversity reception state through a two-way training signal transfer. This determination can be made based on reception level information, baseband reception IQ information, correlation information between a diversity-combining received signal and a predetermined information sequence, or the like, which are obtained when the diversity combining information with respect to each antenna is sequentially changed. The optimal diversity combining information can be determined by receiving training frames or symbols (the number of antennas+1) times.

Abstract: The wireless communication devices A and B determine the optimal diversity combining weight information that optimizes a diversity reception state at each antenna group A1, A2, . . . , AP through two-way training signal transfer between the wireless communication devices A and B. This optimal diversity combining weight information is set to each antenna of each antenna group A1, A2, . . . , AP. Wireless communication units A?, B? perform spacial mapping of signals from antenna group A1, A2, . . . , AP using MIMO technology. Communication area can be enlarged by hierarchization MIMO using the optimal diversity combining weight information.

Abstract: The present invention is a content display device provided with: a main device including a plurality of telephone terminals under control; and a content delivery server for delivering a content to the main device. A content delivery server 30 includes a content converting unit for converting data received from the WEB server into text information. A main device 20 is provided with: a content-display control unit for editing the acquired content information; a transmission control unit for analyzing from which telephone terminal a content acquisition request is made and also for delivering the edited content information; and a storage unit for storing content request information including a location of the content delivery server and a parameter number necessary at the time of obtaining the content information. The telephone terminal includes a button unit for finalizing a plurality of tables of contents displayed on the display unit and parameters.

Abstract: A telephone with a stand has a rear case and a stand leg swingably connected to the rear case. The rear case includes an embossed portion disposed in the center of a back wall thereof, two swing pivots protrudingly arranged in respective lateral faces of the embossed portion, and V-shaped grooves formed in the back face adjacently to the pivots. The stand leg has two main legs and an auxiliary leg connecting the main legs to each other. Each of the main legs has a locking claw protruding from a tip end thereof and engaged with one of the V-shaped grooves, and a guide groove formed in the distal end of the main leg. The guide groove includes a main groove portion extending in the longitudinal direction of the main leg and a sub groove portion orthogonal to the main groove portion.

Abstract: Wireless communication devices A and B perform wireless communication with the MIMO technology. The wireless communication devices A and B determine the optimal diversity combining information that optimizes a diversity reception state through a two-way training signal transfer. This determination can be made based on reception level information, baseband reception IQ information, correlation information between a diversity-combining received signal and a predetermined information sequence, or the like, which are obtained when the diversity combining information with respect to each antenna is sequentially changed. The optimal diversity combining information can be determined by receiving training frames or symbols (the number of antennas+1) times.

Abstract: A telephone with a stand has a rear case and a stand leg swingably connected to the rear case. The rear case includes an embossed portion disposed in the center of a back wall thereof, two swing pivots protrudingly arranged in respective lateral faces of the embossed portion, and V-shaped grooves formed in the back face adjacently to the pivots. The stand leg has two main legs and an auxiliary leg connecting the main legs to each other. Each of the main legs has a locking claw protruding from a tip end thereof and engaged with one of the V-shaped grooves, and a guide groove formed in the distal end of the main leg. The guide groove includes a main groove portion extending in the longitudinal direction of the main leg and a sub groove portion orthogonal to the main groove portion.

Abstract: A telephone communication system is disclosed, in which a plurality of telephone stations based on an Internet protocol are connected to a LAN network to form an IP network including at least one constituent unit. Each constituent unit of said IP network, comprising: SIP server means based on a protocol defined for controlling the start, end and change of a session of an interactive communication; resource management server means for the control storage and delivery of station state databases of said plurality of telephone stations, and application server means. The SIP server means, the resource management server means and the application server means are connected to said LAN internet for offering required services to said plurality of telephone stations, so that information transmission among said plurality of telephone stations and each of said server means are performed on a packet-wise basis.

Abstract: Each access point determines the LAN cable insertion status and acts as the master access point if a cable is inserted, or as the slave access point if no cable is connected. Of the two access points receiving a “connection instruction,” the master access point or a upper access point connected directly or indirectly to the master access point sends a “connection advice message” from the higher level, the lower access point not connected to the master access point sends a “connection request message” from the lower level, and then a “connection response message” is sent from the higher level, and through this procedure the lower access point is added to a new service area.

Abstract: A decision feed back equalizer provides two feedback routines for one symbol-preceding decided data. The signal space is separated into decidable areas and uncertainty areas. Within each of decidable area the distance between any point and the signal point is small. Within each uncertainty area the distance between any point and the signal point is large. If the symbol-preceding equalized signal is in a decidable area, the piece of decided data is fed back, as it is presumed to be correct. If the symbol-preceding equalized signal exists in an uncertainty area, the piece of decided data is not fed back, as it is presumed to be in error. Here the one piece data is selected from all the predicted symbol-preceding decided data so that the instant equalized data is now in the decidable area. This piece of decided data is now fed back.

Abstract: The invention provides a waveform information display apparatus, wherein the property of waveform data is grasped by the light of nature. Specifically, digital waveform data stored in a memory is split into a plurality of time segments, and compressed display data is generated in each of the time segments. A waveform is displayed on the screen by the compressed display data. Then, a property specified for the waveform is extracted from the digital waveform data in each of the time segments, and a value expressing the specified property in the time segment is obtained on the basis of the extracted property. Further, a waveform display portion in each of the time segments displayed on the screen on the basis of the compressed display data in each of the time segments is displayed in a state wherein the obtained value expressing the property is reflected on the waveform display portion.

Abstract: A terminal having an application function of intercommunicating with each of multiple access points is arranged within a wireless LAN system to transmit an interference amount measurement request of the access point to each of multiple access points. Each access point sends out a beacon of the access point and transmit the interference amount information involving the beacon receivable from the access point to the terminal. The terminal prioritizes each access point in the order in which a sum of signal strengths in the returned interference amount information is larger. Each access point automatically decides the use channel and starts an operation of the access point in accordance with a predetermined procedure.