摘要:
The invention provides an R-T-B rare earth sintered magnet 100 including R2T14B-containing crystal grains as the main phase 10, and having an RL-T-M1 based compound 12 at the grain boundary triple points, wherein R represents a rare earth element, T represents at least one element selected from among Fe, Co and Cu, B represents boron, RL represents a light rare earth element, and M1 represents at least one element selected from among Al, Zn and Ga.
摘要:
A mobile communication system capable of determining a communication path to implement fast communication by multihop connection. The mobile communication system includes a mobile station, at least one relay station, and a base station and implements packet transmission from the mobile station to the base station through a communication path with an intermediary of at least one relay station or through a communication path without an intermediary of a relay station. The mobile communication system is provided with a communication path determiner for determining a communication path with a largest communication speed or a communication path satisfying a required line quality, based on interference levels of respective signals received at a relay station constituting a communication path between the transmitting station and the receiving station, and at the base station.
摘要:
The multi-hop communication system according to the present invention is configured by a radio control station 1 connected to a core network, and radio stations 21, 22, 31-33. The radio control station 1 has a control signal TX/RX unit 12 which transmits/receives the control signal, an information signal TX/RX unit 13 which transmits/receives the information signal, and a communication channel controller 15 which transmits a “usage notification” indicating usage of communication channels managed by the radio control station 1 to the radio stations 21, 22, 31-33 using the control signal. The radio station has a control signal TX/RX unit 42 which transmits/receives the control signal, and an information signal TX/RX unit 43 which transmits/receives the information signal.
摘要:
A destination station in a wireless communication system for a multi-hop connection selects a transmission path having a minimum total of required transmission power values of respective stations on the transmission path among candidates of the transmission path from a source station to the destination station and transmits a pilot signal to the source station and a relay station, the pilot signal including identification information about the respective stations on the selected transmission path and required transmission power values thereof. Thus, the source station and the relay station, which have received this pilot signal, can determine the transmission path having the minimum total of the required transmission power values by use of the identification information included in the received pilot signal.
摘要:
A writing operation selecting circuit is provided for selecting a temporary writing operation having a prescribed writing time for a memory cell transistor element and an additional writing operation for the memory cell transistor element. A writing time control circuit is provided for controlling an additional writing operation time by an output signal of the writing operation selecting circuit.
摘要:
A coding and decoding system which uses CRC check bits is disclosed. When a coding apparatus performs coding, symbol interleaving is performed after coding by an outer code of a concatenated code, and coding by an inner code is performed after CRC check bits are added. Then, upon decoding by a decoding apparatus, error detection using the CRC check bits is performed after decoding of the inner code. After symbol deinterleaving is performed, decoding of the outer code by erasure decoding or error correction is performed depending upon the number of symbols included in a frame in which an error has been detected.
摘要:
A liquid crystal injecting method, wherein the area of a portion of a liquid crystal cell, which is dipped in a liquid crystal contained in a liquid crystal vessel, is reduced to a minimum, thereby preventing the liquid crystal in the vessel from being contaminated with foreign matter and reducing the amount of the liquid crystal which unnecessarily adheres to the outer surface of the cell. The liquid level of the liquid crystal in the vessel is detected by a sensor. Liquid crystal is supplied to the vessel on the basis of the detected liquid level to maintain the liquid level at a predetermined height. A portion of the liquid crystal is raised. A liquid crystal injecting port of the cell is dipped into the raised portion of the liquid crystal after an inner space of the cell is evacuated. Thus, the liquid crystal is injected into the cell. Since only the injecting port of the cell is dipped into the liquid crystal in the vessel, the area of the cell which contacts the liquid crystal is reduced, thereby preventing the liquid crystal from contamination by foreign matters adhering to the cell. Further, since the amount of the liquid crystal adhered to the outer surface of the cell is reduced, the liquid crystal can be saved.
摘要:
In a MOS integrated circuit is provided a first differential amplifying circuit for receiving complementary sets of input data at the gates of its two p-channel MOS transistors and for transmitting complementary sets of internal data. There is also provided a second differential amplifying circuit for receiving the complementary sets of internal data at the gates of its two n-channel MOS transistors and for transmitting complementary sets of output data. This realizes high-speed data transmission in which data transmission speed is independent of the generation of a clock signal. By preventing the flow of current from a power supply terminal to a ground terminal, a differential transmission circuit which consumes reduced current can be obtained.
摘要:
A method is provided for testing a semiconductor integrated circuit including a main circuit, a self testing circuit for testing at least one part of the functions of the main circuit, and a test result output circuit having at least one light emitting device for outputting results from the self testing circuit in the form of light. The method includes the steps of inputting a test start to the self testing circuit so as to initiate operation of the self testing circuit; detecting light emitted from the light emitting device with an optical system, the light being emitted based on the test results from the self testing circuit; and obtaining the test results based on the light detection.
摘要:
A radio channel allocation apparatus of a node in a radio communication system which controls to allocate a radio channel between nodes by a virtual carrier sense is disclosed. The radio channel allocation apparatus includes a node information collecting unit which collects information of a neighboring node to which the node can directly transmit data, and a radio channel determining unit that determines a radio channel, which is allocated to a communication link between a node which has transmission inhibition conditions and another node which does not have the transmission inhibition conditions by communications between predetermined nodes. The determined radio channel is a different radio channel from a radio channel between the predetermined nodes, based on node information of the node and the neighboring node.