Abstract: A mobile user terminal, which transmits downlink channel quality information indicating downlink channel quality and an uplink pilot signal to a base station, whereby a carrier frequency used for transmitting the downlink quality information and a carrier frequency used for transmitting the uplink pilot signal are selectable respectively from among a plurality of carrier frequencies assigned to the mobile user terminal; the mobile user terminal includes a radio transmitter, which transmits the downlink quality information and the uplink pilot signal in an intermittent fashion to the base station; and the radio transmitter transmits the downlink quality information and the uplink pilot signal by using a same carrier frequency among the plurality of carrier frequencies or by using adjacent carrier frequencies among the plurality of carrier frequencies, in a period corresponding to a state of intermittent communicate.

Abstract: An optical fiber is provided with a first measurement portion and a second measurement portion provided with covering layers different at least in any one of heat capacity and heat conductivity. Then, the first measurement portion and the second measurement portion are located in the same measurement position and light is inputted from a temperature measurement device into the optical fiber. Thereafter, the temperature measurement device receives backscattered light generated inside the optical fiber to measure temperature distribution in a longitudinal direction of the optical fiber. An analyzer analyzes a variation over time of the temperature distribution outputted from the temperature measurement device to calculate a temperature and a wind velocity in a measurement position where the first measurement portion and the second measurement portion are located.

Abstract: A mobile terminal includes a channel estimation processor to obtain the channel estimation value of a first channel reception signal in use of a plurality of known signals received from a base station within a channel estimation period; a channel compensation processor to perform a compensation process of the first channel reception signal in use of the channel estimation value; and a controller to control the channel estimation period so as to use a known signal which is received after the reception of the first channel reception signal for channel compensation. With this, throughput in downlink communication can be improved by controlling the deterioration of HS-SCCH reception quality itself without any particular transmission power control with the base station even under an environment such as high speed fading.

Abstract: The present invention relates to a Raman amplifier where flexibility in device design considering both of Raman amplification and dispersion compensation is high. In the Raman amplifier, the Raman amplification optical fiber included in the optical amplification section and the dispersion compensating optical fiber included in the dispersion compensation section are arranged while being optically connected to each other. Since the optical amplification section and the dispersion compensation section are provided as independent optical devices, one device can be designed without being restricted to the design conditions of the other device.

Abstract: In a verification supporting apparatus, when an obtaining unit obtains a verification scenario, a substituting unit substitutes an undefined value for a variable value in the verification scenario. A first executing unit executes a logic simulation using an input pattern. From a result of the logic simulation, a determining unit generates code-coverage upper-limit information. A setting unit sets input patterns by giving an arbitrary logic value to the variable value. A second executing unit executes a logic simulation using the input patterns set. A generating unit generates code coverage from the input patterns set. A calculating unit calculates a level of achievement of the code coverage with respect to the code-coverage upper-limit information.

Abstract: The present invention relates to a Raman amplification optical fiber and the like comprising a structure which can Raman-amplify signal light including a plurality of wavelength components at a high efficiency and effectively restrain signal waveforms from deteriorating due to influences of nonlinear optical phenomena, while improving the degree of freedom in the design of optical fiber transmission lines and Raman amplifiers. As characteristics at each wavelength of signal light, the Raman amplification optical fiber has a chromatic dispersion with an absolute value of 6 ps/nm/km or more but 20 ps/nm/km or less, and an effective area Aeff of 20 &mgr;m2 or less, preferably less than 15 &mgr;m2. More preferably, as a characteristic at each wavelength of signal light, the Raman amplification optical fiber has a Raman gain coefficient GR/Aeff of 0.005 (W·m)−1 or more.

Abstract: A method for fabricating a semiconductor device that prevents the formation of a side etch caused by fluoride (CFx) produced when a barrier insulating film is etched. As shown in FIG. 1(G), an opening in the shape of a wiring trench is made in an interlayer dielectric. Then, as shown in FIG. 1(H), a barrier insulating film is etched. As a result, fluoride will be produced. By performing plasma etching by the use of gas which contains hydrogen atoms in the following process shown in FIG. 1(I), the fluoride is converted to a highly volatile compound, such as hydrogen fluoride, and is removed.

Abstract: A ferroelectric memory includes memory cells, a pair of bit lines to which the memory cells are connected, and a control circuit which changes a reference cell applied to one of the pair of bit lines while data read from one of the memory cells is output to the other one of the pair of bit lines.

Abstract: A voltage generating circuit for a digital to analog converter divides a potential difference between a high potential supply and a low potential supply. The voltage generating circuit includes a voltage dividing circuit having three impedance elements connected in series between the high potential supply and the low potential supply. A first current source is connected to a node between the first two series connected impedance elements and a second current source is connected to a node between the second and third series connected impedance elements. The first and second current source supply first and second currents having the same value to the first and second nodes, respectively. A control circuit compares a reference voltage with a selected voltage output from the voltage dividing circuit and controls the first and second currents supplied by the first and second current source so that the selected voltage is made equal to the reference voltage.

Abstract: A binary device suitable for a bar code reader performs a binary signal conversion, without depending on a laser beam scanning rate.

Abstract: A remote supervisory control system is provided in which a master system performs monitoring and control of a plurality of slave systems, maintaining the fine control capability of the past, while enabling implementation with the minimum memory capacity. The master system is connected, via channels, to a plurality of slave systems, each of which has a plurality of individual control points in its purview. The plurality of individual control points are grouped into groups of individual control points having the same attributes, prescribed operations being performed on the status information of all individual control points within each group, the results of these calculations being taken as the status information of a representative control point. This status information is collected in memories located within the master system.

Abstract: A heat sink mounted on a heat producing element for cooling the heat producing element attached on the printed board of the electronic apparatus, having a heat sink body made of a good heat conductive material and a fan assembly installed inside the heat sink body. The heat sink body is efficiently air-cooled by a cooling air generated by the rotation of the fan assembly. The cooling air forcibly cools a base and a fixing wall of the base adjacent to the heat producing element and plate-like radiating fins or a pin-like radiating fins are protruded on the heat sink body to radiate the heat effectively. The position of the fan assembly is at the center of the heat sink body or is at the offset position from the center of the heat sink body. The heat sink of the present invention can be installed in a portable electronic apparatus such as a portable computer.

Abstract: The present invention relates to a system for controlling a miscellaneous device such as a remote device associated with an exchange which handles a fixed length cell with a control field and an information field. The object of the invention is to offer a system where an exchange can control a miscellaneous device such as a remote device in accordance with the feature of the exchange. The exchange includes a call processor, a switch and a signal device. In order to control the miscellaneous device, a path is formed between the signal device and the miscellaneous device. Control information from the call processor is cellulated. The path notifies the miscellaneous device of the control information including cell via the switch to control the miscellaneous device by the exchange.

Abstract: A switch interface unit, a monitor unit, and a control system interface unit are connected as external units to a highway to which a subscriber information processing unit is also connected so that a monitoring process, that is, a special study process, can be simplified and a cost charged for the subscriber information processing unit can be prevented from increasing greatly. Furthermore, in an accounting process, accounting parameters are accumulated in an accounting information accumulating unit for variations on compressed source addresses, not on source addresses. As a result, the accounting information accumulating unit, etc. can be realized with normal circuit elements only.

Abstract: A method and apparatus for detecting the presence or absence of errors caused along a designated section of a virtual path established within a communication network. The number of errors is detected at both the entrance and exit of a detection section. The number of errors detected at the entrance is transmitted to the exit by using a path overhead of a virtual path to be monitored, and the number of errors at the entrance is subtracted from the number of errors at the exit, thereby calculating the number of errors caused along the detection section. The path overhead containing data on the detected error count includes a parity compensation bit that is set so that the parity carried in the path overhead remains unchanged. This eliminates the need to recalculate bit interleave parity-2 for the virtual path under monitoring.

Abstract: A dynamic random access memory having a trench capacitor includes: a semiconductor substrate; a trench formed in a semiconductor substrate; an insulating layer formed on an inner surface of the trench and having a bottom opening; a first conductive layer formed at the bottom opening position and on the insulating layer and the first conductive layer is ohmically connected to the semiconductor substrate at the bottom opening. The device includes further a dielectric layer formed on the first conductive layer; a second conductive layer formed on the dielectric layer so as to fill the trench, the first conductive layer, the dielectric layer, and the second conductive layer constituting a charge storage capacitor; and a MIS transistor formed in the semiconductor substrate, wherein the second conductive layer is ohmically connected to a source or drain region of the MIS transistor.