摘要:
A brake booster includes a master cylinder which is disposed rearwardly of a booster mechanism including a power piston, or toward a brake pedal. A valve mechanism which mechanically cooperates with an input shaft to produce a fluid pressure differential across the power piston includes a first valve seat formed on a valve body defined by a shank portion of the power piston, a second valve seat formed on the input shaft, and a valve head adapted to seat upon the first and the second valve seat in a direction opposite from the direction which is utilized in a conventional brake booster, or in a direction from the front side of the power piston. The valve mechanism is supplied with a fluid pressure from the front side of the power piston, thereby simplifying the construction of a brake booster of the type described.
摘要:
A method of improving an image quality of a video signal, which is supplied on a frame-by-frame basis, includes extracting low frequency components from a video signal of an n-th frame, where n is a natural number excluding zero, subtracting the extracted low frequency components from a video signal of an (n+m)th frame to produce high frequency components, where no is a natural number excluding zero, and adding the produced high frequency components to the video signal of the (n+m)th frame. The extracted low frequency components include a horizontal component and a vertical component.
摘要:
A projection display apparatus comprises a lamp; a display element that modulates light emitted from the lamp according to an amplitude of the image signal, and emits the light as the image light; a light intensity controller that changes a lamp power according to a power changing operation, and, if the changed lamp power is lower than a rated power of the lamp and supplied to the lamp for a certain period of time, increases the lamp power and then reduces the lamp power to an original power, identifies an amplitude of the image signal where an intensity of the image light is constant before and after the change of the lamp power; and an image signal controller that controls the amplitude of the image signal to the identified amplitude, and supplies the display element with the image signal.
摘要:
To provide a video display apparatus and an afterimage correcting method for solving the problem of image quality degradation. Removing unit 2 removes DC components from the video signal received by input terminal 1. Integrating unit 3 integrates the video signal with DC components removed by removing unit 2 to generate an integration signal. Subtracting unit 4 subtracts the integration signal generated by integrating unit 3, from the video signal received by input terminal 1.
摘要:
A characteristic automatic compensating apparatus of an oscillator includes oscillating means, temperature detecting means, characteristic determining means for measuring a drift value of an oscillating frequency while changing the temperature and for determining a coefficient of an approximated equation representing temperature and the drift value, storing means for storing the coefficient, drift value predicting means, and characteristic updating means for updating the coefficient by the measured drift value of the oscillating frequency and the temperature, wherein the characteristic determining means represents the approximated equation representing the characteristic of the temperature detected by the temperature detecting means and the drift value of the oscillating frequency of the oscillating means by a polynomial.
摘要:
A single-plate color projector includes a color wheel for chromatically separating light emitted from a light source in time series. An image forming device optically modulates each separated color light in sequence. A driving mechanism rotates the color wheel in a circumferential direction. A reflective marker is rotated together with the color wheel. A detector circuit detects movement of the reflective marker to generate a signal. A driving mechanism control circuit drives the driving mechanism in synchronization with the signal generated by the detector circuit. An image forming device control circuit drives the image forming device in synchronization with the signal generated by the detector circuit, and a time adjusting mechanism moves either the reflective marker or the detector circuit or both the reflective marker and the detector circuit to change a relative positional relationship therebetween.
摘要:
An average value signal of the G two-phase input signal is generated by means of an average value calculation circuit. This average value signal is regarded as a signal in which a one-dimensional low-pass filter process, in which the number of taps is 2 and the filter coefficient for each tap is 0.5, has been carried out for a single-phase signal and the number of items of data then thinned to one half. A two-dimensional LPF circuit next subjects this average value signal to a low-pass filter process to eliminate the high-frequency component (edge component). The average value signal that has undergone the low-pass filter process is then subtracted from the input signal of each phase to extract the edge component of the input signal of each phase. An amplification circuit then multiplies the edge component of the input signal of each phase by a prescribed factor, and an addition circuit next adds this multiplied edge component to the input signal of each phase. The above-described processes emphasize the edges of a video picture that is realized by a two-phase signal and thus realize flare correction.
摘要:
A single-plate color projector includes a color wheel for chromatically separating light emitted from a light source in time series. An image forming device optically modulates each separated color light in sequence. A driving mechanism rotates the color wheel in a circumferential direction. A reflective marker is rotated together with the color wheel. A detector circuit detects movement of the reflective marker to generate a signal. A driving mechanism control circuit drives the driving mechanism in synchronization with the signal generated by the detector circuit. An image forming device control circuit drives the image forming device in synchronization with the signal generated by the detector circuit; and a time adjusting mechanism moves either the reflective marker or the detector circuit or both the reflective marker and the detector circuit to change a relative positional relationship therebetween.
摘要:
A method for the manufacture of paper comprising the steps of: a) forming an aqueous cellulosic papermaking slurry; b) adding an effective coagulating amount of a coagulant and a flocculant to said cellulosic papermaking slurry, wherein said coagulant is prepared by blending i) an effective coagulating amount of an aqueous conditioned colloidal silica sol with an average particle size within the range of from 1 to 150 nm and wherein the aqueous colloidal silica sol is conditioned by contacting said sol with a strong acid cation exchange resin, and ii) an effective coagulating amount of a cationically-charged water-soluble polymeric coagulant; c) draining said cellulosic suspension to form a sheet; and, d) drying said sheet. The components of the invention are blended together so that addition is simultaneous. The colloidal silica is conditioned by passing over a cationic exchange resin prior to addition of cationic polymer. The term conditioned as used herein refers to the act of passing the colloidal silica over a cationic exchange resin.
摘要:
This invention relates to the clarification of natural waters containing turbidity-causing components. This method comprises the addition of a stable colloidal silica suspension and water based polymeric coagulant to the turbid water. The components of the invention may be added independently, or blended together so that addition is simultaneous. The colloidal silica may also be conditioned by passing over a cationic exchange resin prior to addition of cationic polymer.