摘要:
A mobile wireless communication system includes: a wireless base station that controls, for each timing, a transmission state of a radio wave repeatedly transmitted at timings that respectively differ; and a plurality of wireless mobile devices that are respectively allocated one of the timings, receive the radio wave at the timing allocated, and based on the radio wave received, respectively detect a connection destination. The wireless base station controls the transmission state of the radio wave transmitted at an arbitrary timing to be any one of a complete suspension state of continuously suspending transmission, a discontinuous suspension state of discontinuously suspending transmission, and an invalid information transmission state of transmitting invalid information.
摘要:
A conductive paste for a photovoltaic cell and a method for producing the photovoltaic cell are disclosed. The conductive paste includes a silver powder, glass frit and a sintering inhibitor that suppresses sintering of the silver powder. The sintering inhibitor contains at least one substance selected from aluminum oxide, silicon oxide and silicon carbide. The method includes forming a first anti-reflective layer on a first region of a main surface of a semiconductor substrate; forming a second anti-reflection layer on a second region of the main surface which is different from the first region; coating the electrically conductive paste onto the second anti-reflective layer on the second anti-reflection layer; and forming a surface electrode in the second region by reacting the second anti-reflection layer with the electrically conductive paste at an elevated temperature.
摘要:
A solar cell element is disclosed. The solar cell element comprises a semiconductor substrate and electrodes. The semiconductor substrate with a first and second main surface comprises a body and a first layer. The electrodes comprise first electrodes on the first layer and second electrodes on the second main surface. At least one of the first electrodes and the second electrodes comprises silver, copper and nickel as a main component. A method for manufacturing a solar cell element is disclosed. An electrically conductive paste containing silver, copper and nickel is prepared. The electrically conductive paste is applied on the semiconductor substrate. The electrically conductive paste is fired to form the solar cell element.
摘要:
A constant linear velocity disk rotating apparatus for rotating a disk storing data recorded therein substantially at fixed linear recording speed detects a signal recorded in the disk by signal detecting means, obtains a control signal through the comparison of phase of the signal detected from the disk and that of a reference signal by phase comparing means, and controls the rotating speed of the disk on the basis of the control signal. To maintain the sensitivity of phase error detection which tends to vary in proportion to the radial position r of the signal detecting means relative to the disk at a fixed level, the gain of the phase control system is regulated in inverse proportion to the radial position r of the signal detecting means according to the output of detecting means which detects the rotating frequency or period of the disk. The control signal provided by the phase comparing means is applied to disk driving means after regulating the gain thereof by varying the duty factor in transmitting the control signal to the disk driving means.
摘要:
An optical disc player for optically recording the video information or audio information onto a recording medium or optically reproducing the recorded information. The disc player includes a search unit for searching an information track having no signals recorded thereon prior to additionally recording an information signal on the unrecorded track. The search unit has a level detection circuit for detecting the energy value of the light reflected by the recording medium or an RF signal detection circuit for detecting the RF signal component. When the reflected light energy exceeds a predetermined value or the RF signal component is not detected, the search unit regards the track as a track having no signals recorded thereon, the search operation for a track having no signals being terminated and information can be recorded of the track having no signals recorded thereon.
摘要:
A control apparatus for controlling an optical video disk player capable of optical recording and reproduction of video and/or audio information on a recording medium by a light beam. The control apparatus comprises a tracking failure detection circuit detecting failure of the light beam to accurately track along a track formed on the recording medium, and a light beam control signal generator circuit reducing the energy of the light beam in response to the detection of the tracking failure by the tracking failure detection circuit, whereby recording of information on the recording medium is inhibited in the event of occurrence of a tracking error.
摘要:
A high frequency heating apparatus is provided with a hood so constructed as to limit infrared ray energy reaching an infrared ray detecting element for detecting infrared rays radiated from an object to be heated within a heating chamber. In heating apparatus, the influence by the reflection of infrared rays is minimized by making the absorption factor approach to about "1" with blackening the inner surface of the hood. Also, the rotation of a chopper to detect infrared rays radiated from the object through chopping operation is detected by a mechanical switch. The output signal from the infrared ray detecting element is synchronous-rectified in synchronism with the switching operation of the mechanical switch.
摘要:
Apparatus for winding a linear, elongated object into a coil including a bending roller assembly for bending the linear, elongated object into loops of the coil, and a leveling device for bringing the curvature of the coil to a predetermined level. The leveling device includes a base movable toward and away from the bending roller assembly so as to adjust the spacing between the bending roller assembly and the base, a plurality of sliders supported by the base and located circumferentially of the coil in spaced relation to one another for movement in sliding motion toward and away from the center of curvature of the coil, a plurality of leveling roller assemblies each supported by one of the sliders for imparting a bending moment to the coil to correct the curvature thereof to a desired value, and an actuator for radially positioning the sliders in accordance with the spacing between the bending roller assembly and the base. One of the two adjacent leveling roller assemblies imparts a bending moment to the coil in a direction which is opposite to the direction in which the other leveling roller assembly imparts a bending moment to the coil.
摘要:
The main body of the winding machine comprises: a rotating driving section and a support portion both mounted on a base; and a main shaft supported at one end thereof by a bearing mounted on said support portion and rotated in accordance with the rotation of the rotating driving section. The main shaft is detachably provided at one end thereof with a universal winding barrel comprising: a slider coupled on to the main shaft and sliding on the main shaft; and a plurality of winding barrel plates connected on to said slider through a plurality of links and changing the circumferential dimension to mount the insulating tube thereon when the slider slides axially on the main shaft. At the same time, the urging of the insulating tube against the plurality of winding barrel plates to support it and the releasing of said winding barrel plates are carried out automatically.
摘要:
A tracking control apparatus is provided for controlling a displacement error between a pickup system and a track when reproducing information recording on an information-recording and reproducing medium having tracks on which information is recorded or reproduced. The tracking control apparatus includes on-track detecting means for detecting a light beam is located on the track, traveling-direction detecting means for detecting the direction of the pickup system traveling toward the track from the displacement error and the output signal supplied by the on-track detecting means and outputting a traveling-direction signal representing the traveling direction, track-slippage detecting means for detecting a track-slippage signal representing the direction of the light beam being slipped out of a target track from the traveling-direction signal supplied by the traveling-direction detecting means, and tracking control means for supplying as a control signal the displacement error when the light beam is located on the target track or as a control signal the track-slippage signal supplied by the track-slippage detecting means when the light beam is not spotted on the target track and driving the pickup system in a manner to allowing the light beam to follow the tracks.