摘要:
A wireless base station which controls joining of a plurality of wireless terminals to a wireless network, stores a maximum joining possible terminal number which indicates a maximum number of the wireless terminals of each terminal type that can join the wireless network simultaneously, and which is set in advance for each one of a plurality of terminal types that classify the wireless terminals, and a currently joining terminal number which indicates a number of the wireless terminals of each terminal type that are currently joining the wireless network, for each one of the plurality of the terminal types. Then, the wireless base station judges whether the joining of one wireless terminal of one terminal type which sent a request message to the wireless network is permitted or not, according to the maximum joining possible terminal number for the one terminal type and the currently joining terminal number stored for the one terminal type.
摘要:
An AV communication control circuit suitable for a radio LAN-LSI in a radio AV transmission/reception device is formed by a copyright protection processing unit configured to carry out a copyright protection processing with respect to AV data entered from an AV stream signal line, a selection unit configured to select either one of AV data entered from an AV stream signal line through the copyright protection processing unit and AV data entered from a general purpose bus, and a transmission control unit configured to carry out control for transmitting AV data selected by the selection unit to a network.
摘要:
An outside DTCP bridge for relaying information between an outside communication device connected to an outside network and a home communication device connected to a home network, carries out a first authentication and key exchange processing for purpose of copyright protection between the outside DTCP bridge and the home communication device as well as a second authentication and key exchange processing for purpose of copyright protection between the outside DTCP bridge and the outside communication device, and stores an identification information of the outside communication device. Then, transmission/reception of information between the home network and the outside network is carried out only when the outside communication device which made the access request is stored and both the first authentication and key exchange processing and the second authentication and key exchange processing succeed.
摘要:
A memory controller circuit configured to control an SDRAM is provided. The memory controller circuit includes a first unit configured to accept an access request provided by one of a plurality of masters for access to a page included in the SDRAM. The memory controller circuit includes a second unit configured to record an access request period of each of the masters. The memory controller circuit includes a third unit configured to set an open period of the page on the basis of the access request period recorded in the second unit in accordance with the master having provided the access request. The third unit is configured to open the page requested to be accessed for the open period having been set.
摘要:
A roll bar for protecting a projection mirror is attached so as to avoid exerting an external force to the projection mirror portion, direct thereto upon a turnover the projection apparatus. Further, in the case of no attachment of the roll bar for protecting the projection mirror portion, the projector apparatus is prevented from being started. Further, when the projector apparatus is carried away, the roller bar for protecting the projection mirror serves as a handle.
摘要:
The other communication devices are prohibited to transmit the address initialization request for a prescribed period of time since one communication device transmitted the address initialization request for an address managed by a control protocol, so that the conflict of the initialization requests for the same address will not occur and the problem of assigning the address in overlap to the communication devices will not arise. Also, the other communication devices are prohibited to transmit the address server detection request packet for a prescribed period of time since one communication device transmitted the address server detection request packet, so that the conflict on the network by a plurality of address server detection requests will not occur, and it is possible to determine the MAC address server uniquely.
摘要:
A data transmission control device includes: a memory control unit that is connected to a DRAM, and accesses to the DRAM in accordance with a read/write request from various devices that request read/write of data from/into the DRAM; and a command control unit that issues an active command of designating a row address of the DRAM to start a memory access cycle when the read/write request is made, and issues a precharge command to the DRAM to end the memory access cycle, and that prohibits issuance of a precharge command in a previous memory cycle if the issuance of the precharge command is unnecessary. The command control unit determines that the issuance of the precharge command is unnecessary if another read/write request from/into the same page as a page requested in a memory access cycle is made, and determines that the issuance of the precharge command is necessary if another read/write request from/into a page different from a page requested in a memory access cycle is made, or no read/write request is repeated with a predetermined number of times, which are equal to or greater than two, as an upper limit.
摘要:
On a surface-roughened aluminum foil, an aluminum oxide film as an anodic oxide film is formed. Then, a conductive polymer layer as a solid electrolyte is formed thereon and thereafter a first metal plating layer is directly formed on the conductive polymer layer, thereby forming a cathode portion. On the other hand, a second metal plating layer is formed on another portion of the surface-roughened aluminum foil, which is not subjected to anodic oxidation or which is subjected to anodic oxidation followed by polishing or formation of an anode deposition film, to thereby form an anode portion. Third metal plating layers are formed at the anode and the cathode portions to obtain a capacitor element. A plurality of capacitor elements are stacked and bonded together fusion after formation of the third metal plating layers. Alternatively the capacitor elements may be bonded together by conductive paste without the third metal layers.
摘要:
An electronic apparatus includes a memory control circuit that controls a first memory and a second memory, the first memory is connected to the memory control circuit through a first data bus, the second memory is connected to the memory control circuit through the first data bus and a second data bus, and a sum of bus widths of the first data bus and the second data bus is larger than the bus width of the first data bus by a times. When the memory control circuit receives an access request for the second memory, the memory control circuit generates a command for accessing the second memory b times on the basis of an address of the access request point and accesses the second memory.
摘要:
A method produces an undercoat-covered smoothed printed wiring board, requiring no step of polishing the surface of the printed wiring board. A method for producing a solder-resist-covered printed wiring board causes no depression in an area between circuit traces. A printed wiring board so produced is also described. The method for producing a printed wiring board includes applying a photo- and heat-curable resin composition onto at least a part of a surface of a printed wiring substrate; placing an optically transparent smoothing member on the resin layer; moving a hard roller on the smoothing member to thin the applied resin layer to a thickness of interest; placing a negative-image mask on the smoothing member; exposing the applied resin layer to light via the negative-image mask; removing the optically transparent smoothing member; removing a light-unexposed portion of the applied resin layer through development; and completely heat-curing the cured light-exposed portion.