摘要:
A logarithmic amplifier comprises an amplifier provided with a feedback circuit, a logarithmic conversion device in the feedback circuit, an oscillation preventing circuit which is provided with a capacitor connected in parallel with the logarithmic conversion device, and a control circuit. The control circuit controls the oscillation preventing circuit in accordance with the current fed into the logarithmic amplifier, so that the amount of certain components in the output from the amplifier, which components are fed back to an input terminal of the amplifier through the oscillation preventing circuit, decreases as the current fed into the logarithmic amplifier becomes smaller. An image read-out apparatus comprises a photoelectric detector which detects light from a recording medium, which light is emitted by the recording medium when it is scanned, and the logarithmic amplifier into which the output current generated by the photoelectric detector is fed. An image having good sharpness is thereby obtained.
摘要:
A user data protection method in which a management server includes an address replacement table having correspondence relation of memory addresses of a memory assigned to a virtual server and memory addresses of a memory assigned to a virtualization mechanism which is different from that at usual time, comprising the steps of: making, when an event occurs, the virtual server send virtual server identifier information for identifying the virtual server to the management server; making the management server detect the event; making the management server specify the virtual server in which the event occurs in accordance with the virtual server identifier information; sending the address replacement table to the virtualization mechanism of the physical server including the specified virtual server; and changing the correspondence relation of the memory addresses of the virtual server and the memory addresses of the virtualization mechanism on the basis of the address replacement table.
摘要:
A reversing operation detecting device for a work vehicle, in which a forward and reverse travel operating lever is favorable in operability and which stably detects the reversing operation of the operating lever to be capable of issuing a vehicle reversing alarm. A non-contact type sensor detects the reversing operation of the forward and reverse travel-operating lever. A detected link is provided to perform opposite swinging motions in forward and reverse directions, respectively, following the swinging of the operating lever in forward and reverse directions, and the reverse swinging motion of the detected link intersects the non-contact type sensor for detection of reverse operation. The detected link is composed of an interlocking lever interlocking with a forward and reverse swinging shaft of the operating lever to swing, and a seesaw movement lever performing a motion to follow swinging of the interlocking lever in a reverse direction to approach a detecting surface of the non-contact type sensor to actuate the non-contact type sensor and a motion to follow swinging of the interlocking lever in a forward direction to separate from the detecting surface of the sensor to make the sensor inactive.
摘要:
An image recording and read-out apparatus comprises an endless recording belt having a stimulable phosphor layer, a group of conveyor rollers for supporting and circulating the recording belt, a snaking detection means for detecting the amount and direction of snaking of the recording belt, and a snaking suppression means for suppressing snaking of the recording belt which, in response to the output of the snaking detection means, swings the axis of rotation of a prescribed one of the group of conveyor rollers in a direction which produces substantially no change in the length of the conveyance path of the recording belt.
摘要:
A beam-combining laser beam source device comprising an airtight housing and a laser beam source unit housed in the housing. The laser beam source unit comprises laser beam sources and collimator optical systems respectiely positioned in optical paths of laser beams, which are radiated from the laser beam sources, in order to collimate the laser beams. Optical path adjusting elements are respectively positioned in the optical paths of the laser beams in order to radiate the laser beams along optical paths parallel and close to one another. The laser beam sources, the collimator optical systems, and the optical path adjusting elements are supported on a single support. The housing is provided with a temperature sensor, which detects the temperature in the housing, and temperature adjusting elements which heat or chill the housing on the basis of control of the temperature sensor so that the temperature in the housing is kept constant.
摘要:
A radiation image read-out apparatus comprises many stimulating ray sources and a single light deflector for making many beams of stimulating rays emitted by the stimulating ray sources impinge upon different portions of a stimulable phosphor sheet carrying a radiation image stored therein so that the different portions are scanned by the beams of stimulating rays in a main scanning direction. The stimulating ray sources are turned on pulsewise at timings deviated from each other so that they generate large outputs. The stimulable phosphor sheet is moved with respect to the beams of stimulating rays in a sub-scanning direction normal to the main scanning direction, and light emitted by the stimulable phosphor sheet when exposed to the beams of stimulating rays is detected and converted into electric image signals.
摘要:
A radiation image read-out apparatus is constituted for exposing a stimulable phosphor sheet carrying a radiation image stored thereon to stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and photoelectrically detecting the light emitted by the portion of the stimulable phosphor sheet exposed to the stimulating rays by use of a photodetector to obtain an image signal representing the radiation image. The apparatus comprises a sharpness adjuster for adjusting sharpness of a visible image reproduced based on the image signal, a light amount detector for detecting the light amount of stimulating rays, and a control circuit for receiving the output of the light amount detector, and controlling the sharpness adjuster in accordance with a decrease in the light amount of stimulating rays so that sharpness of the visible image is decreased.
摘要:
A signal representing the period between adjacent positive-going edges and the period between adjacent negative-going edges of a pulse train generated by a rotary encoder coupled coaxially to a motor is compared with a reference period signal for the motor to produce a deviation signal. The rotation of the motor is controlled by the deviation signal.
摘要:
A shut-off valve for a liquid fuel includes a valve housing in which a float, adapted to bs raised by buoyant force as the liquid fuel flows into the valve housing, and a valve disc, for sealably closing a fuel vapor outflow hole, are arranged in such a manner as to allow the valve disc to be vertically displaceable relative to the float. A plate-like valve member, which carries a rod-shaped protuberance for sealably closing a through hole formed through the valve disc, is disposed between the valve disc and the float. When the float is lowered as the liquid fuel returns from the valve housing to the fuel tank, a first engagement pawl engages the plate-like valve member at a single point and, at the same time, a second engagement pawl engages a flange portion of the valve disc at a single point, whereby the plate-like valve member and the valve disc are opened so as to enable the fuel vapor generated in the fuel tank to flow into a receiving canister. At the time of an occurrence of vehicular accident or emergency, a ball member disposed in the valve housing is slidably displaced along a concave conical surface until the fuel vapor outflow hole is sealably closed by the valve disc via the ball member, thus preventing the liquid fuel from flowing into the canister.
摘要:
A beam-combining laser beam source device comprising an airtight housing and a laser beam source unit housed in the housing. The laser beam source unit comprises laser beam sources and collimator optical systems respectively positioned in optical paths of laser beams, which are radiated from the laser beam sources, in order to collimate the laser beams. Optical path adjusting elements are respectively positioned in the optical paths of the laser beams in order to radiate the laser beams along optical paths parallel and close to one another. The laser beam sources, the collimator optical systems, and the optical path adjusting elements are supported on a single support. The housing is provided with a temperature sensor, which detects the temperature in the housing, and temperature adjusting elements which heat or chill the housing on the basis of control of the temperature sensor so that the temperature in the housing is kept constant.