摘要:
An electronic media communication apparatus is provided in which encryption keys and decryption algorithms are provided as circuits concealed in logic programmable devices. When the client requests delivery of electronic media, the server individually encrypts the electronic media and delivers the encrypted electronic media to the client. In the client, an electronic media specific circuit section uses logic circuit data received via a client data communication section to generate an electronic media specific logic circuit. Then, a logic circuit configuration section combines the logic circuit with a terminal specific circuit section uniquely implemented for the client to form an electronic media security circuit section. The original digital content can then be generated by inputting the encrypted electronic media stored in a storage unit to the electronic media security circuit section. Correct decryption is only possible when the electronic media specific circuit section and the terminal specific circuit section are used together in combination.
摘要:
An etchant for copper and copper alloys, includes an aqueous solution containing: 14 to 155 g/liter of cupric ion source in terms of a concentration of copper ions; 7 to 180 g/liter of hydrochloric acid; and 0.1 to 50 g/liter of azole, the azole including nitrogen atoms only as heteroatoms residing in a ring. A method for producing a wiring by etching of copper or copper alloys, includes the step of: etching a portion of a copper layer on an electrical insulative member that is not covered with an etching resist using the above-described etchant so as to form the wiring. Thereby, a fine and dense wiring pattern with reduced undercut can be formed.
摘要:
An image display apparatus for displaying image signals of a form of packets incorporating display position information includes a combination of unit display devices so as to acquire translational objectivity. Each of the unit display devices including a receiving part for receiving image signals, a processing part for dividing input image signals into those falling inside and those falling outside a range for display or those subject to or those not subject to display based on the display position information and serving to process display positions of the image signals falling outside the range for display or not subject to display, an output part for outputting the processed image signals along an axis of translational objectivity to a subsequent unit display device, and a display part for displaying the images falling in the range for display, the image display apparatus displaying the image signals as a whole, with the image signals processed sequentially with the unit display devices.
摘要:
A crystalline material represented by M12a(M2bLc)M3dOyNx wherein M1 is at least one element selected from alkali metals, M2 is at least one element selected from Ca, Sr, and Ba, M3 is at least one element selected from Si and Ge, L is at least one element selected from rare earth elements, Bi, and Mn, a is 0.9 to 1.5, b is 0.8 to 1.2, c is 0.005 to 0.2, d is 0.8 to 1.2, x is 0.001 to 1.0, and y is 3.0 to 4.0 or less.
摘要:
There are provide a silicate-based phosphor excellent in emission intensity and a manufacturing method of the same. A manufacturing method of a silicate-based phosphor is characterized by: introducing in a vessel raw material powders having a compound containing light-emitting ions selected from at least one of Eu, Ce, Mn, and Tb; and firing the raw material powders while supplying SiOx (0.5≦x≦1.9, preferably, 0.8≦x≦1.2) in a gas phase. The raw material powders preferably further contains at least one of an alkali metal compound, an alkaline-earth metal compound, a magnesium compound, and a rare-earth compound. The silicate-based phosphor is preferably M2SiO4:Eu2+ (wherein M is one or more selected from a group consisting of Ca, Sr and Ba). The firing is preferably performed by supplying the SiOx to the raw material powders in a gas atmosphere at a temperature of 1200 to 1700° C. and subjecting the raw material powders to a gas-solid phase reaction at a temperature of 700 to 1700° C.
摘要:
A novel method for measuring airborne radon and thoron capable of separately measuring radon and thoron with high sensitivity, having a small-sized device structure, and free of the influence from its measurement environment. In the method, by measuring Cherenkov light generated when airborne radon and thoron are adsorbed to an absorbent and then β rays emitted in process of disintegrations of radon and thoron pass through the absorbent, radon and thoron are measured. Based on a decay time of the Cherenkov light, a mixture ratio between radon and thoron is measured. As the absorbent, porous glass is preferably employed which is provided with fine pores of 0.3 to 30 nm in diameter.
摘要:
A CRC value calculator enables throughput to be improved while keeping down the increase in the size of the circuitry. This is achieved by using (n+1) basic CRC circuits to configure a CRC value calculator in which the width of the data processed during one clock cycle is m2n bits. For example, when m2n bits is the data width processed per calculator cycle, the CRC value calculator of this invention is configured by using selectors to serially connect a CRC circuit that processes every m2n bits, a CRC circuit that processes every m2(n−1) bits, . . . , and a CRC circuit that processes every m20 bits. This configuration makes it possible to calculate a correct CRC value even when the remainder of an input network frame is not a multiple of m2n bits. Selectors are used to select CRC circuit output according to process data width. Reduction of the operating frequency is avoided by using registers to form a pipeline between CRC circuits.
摘要:
An object of the present invention is to provide fluorescence showing a peak wavelength of excited spectrum within the wavelength range of from 350 to 500 nm and suitable for a white LED emitting yellow light, and a white LED comprising this fluorescence. This object achieved by phosphor for white. LED comprising a silicate fluorescent material and a borate fluorescent material.
摘要:
Network device testing equipment capable of testing network devices using small size packets and for a transferring ability and a filtering ability at a media speed is described. A configuration is adopted in which a Field Programmable Gate Array (FPGA) included in a transmitter or receiver on one or both of transmitting and receiving sides is connected directly to a physical layer chip of a network and computers on both the transmitting and receiving sides are connected thereto. Each of the FPGAs of the transmitter and receiver has a circuit which has an integrated function of transmitting a packet pattern generation function and a packet-receiving function, thereby enabling a test and an inspection in real time. When inspecting the filtering function, a hash table storing therein a hash value and a list of occurrence frequencies for hash values is utilized. In order to avoid the hash values of different packets from having a same value, the hash function is configured so as to avoid that the same hash value is given to different packets or, when packet values have a common hash value, the packet is re-shaped into a packet having a different hash value.
摘要:
A coil surrounding only the tip of nozzles of a plastic extruding die is provided. By passing a high frequency current through the coil to selectively heat only the tip of the nozzles. Further, in a plastic extruding die in which a high frequency current is passed through a coil provided around nozzles to heat the periphery of the nozzles, the coil is formed of a conductor tube through which a coolant is caused to flow.