摘要:
An image reading apparatus is disclosed which reads from above a book document mounted as opened upwardly. This image reading apparatus decides the positions of face terminal parts of the document by detecting longitudinal edges in accordance with differences in luminance contrasts which occur in the face part of document and the lateral face part of document in the lateral direction of an image and further detecting the pattern of longitudinal edges due to the overlap of pages in the lateral face part of document and the amount of change of the position of the upper side edge of the document. The apparatus, therefore, is capable of accurately detecting the face of the document and the lateral face of the document and producing exclusively the image of the face of the document in spite of the presence of an index, a pattern of black frame, or a black background in the terminal parts of the face of the document.
摘要:
This invention concerns an image processing device for adjusting the density of an image and an image reading device incorporating the image processing device and aims to enhance the repeatability of pseudo-gradient without reference to density distribution of the image. The image processing device which fulfills the purpose of compensating the gradient of image data consisting of multivalue digital signals comprises means ME1 to ME3 for storing a plurality of gradient compensation data T1 to T3 having mutually different contents of compensation, means for detecting a contrast of an image on the basis of a group of image data conforming to one image, and means for switching the contents of compensation for the image data by selecting one of the three gradient compensation data T1 to T3 in conformity with the contrast.
摘要:
An absorption refrigerator uses water as a refrigerant and a halogen compound as an absorption solution, and is characterized in that an oxide film of thickness of 0.02-5.0 .mu.m is formed on a surface of at least one of a heat exchanger and a high temperature regenerator. And a production method of the absorption refrigerator is characterized by oxidizing a surface of at least one of a heat exchanger and a high temperature regenerator at a temperature of 200-800.degree. C., and adjusting a heating temperature and a heating retaining time so that a value of parameter (P), obtained according to P=T (5+log t) is 3.5-6.0.times.10.sup.3, wherein T represents heating temperature (.degree.K), and t heating retaining time (minute).
摘要:
A composite pitch pattern of an artificial waveform of a composite sound indicating characters is produced according to a general pitch pattern producing model, and a pitch pattern of a VCV phoneme-chain waveform of each of VCV phoneme-chains corresponding to the characters is produced from an actual voice sample. Each VCV phoneme-chain composed of a preceding vowel, a consonant and a succeeding vowel has a pitch fine structure and a pitch fluctuation. Thereafter, an overall inclination of the pitch pattern of each VCV phoneme-chain waveform is adjusted to that of a portion of the composite pitch pattern corresponding to the-same VCV phoneme-chain to overlap transitional portions of preceding and succeeding vowels in a changed pitch pattern of each VCV phoneme-chain waveform with those in the corresponding portion of the composite pitch pattern. Therefore, when changed pitch patterns of the VCV phoneme-chain waveforms are connected with each other, a synthesized sound of the characters can be obtained while the synthesized sound maintains a pitch fine structure and a pitch fluctuation.
摘要:
An image reading apparatus that reads a first image and a second image which were photographed on a microfilm side by side in the width direction of the microfilm. The image reading apparatus has a reading device which reads the images on the microfilm, a parameter setting device which sets separately a first image processing parameter for the first image and a second image processing parameter for the second image, and a control device which controls the reading device to read the first image in accordance with the first image processing parameter and to read the second image in accordance with the second image processing parameter.
摘要:
An absorption refrigerator uses water as a refrigerant and a halogen compound as an absorption solution, and is characterized in that an oxide film of thickness of 0.02-5.0 .mu.m is formed on a surface of at least one of a heat exchanger and a high temperature regenerator. And a production method of the absorption refrigerator is characterized by oxidizing a surface of at least one of a heat exchanger and a high temperature regenerator at a temperature of 200.degree.-800.degree. C., and adjusting a heating temperature and a heating retaining time so that a value of parameter(P), obtained according to P=T (5+log t) is 3.5-6.0.times.10.sup.3, wherein T represents heating temperature (.degree.K), and t heating retaining time (minute).
摘要:
A chroma signal is emphasized then sub-sampled using a sampling offset differing by 90.degree. in four consecutive fields, then recorded on a recording medium. After reproduction from the recording medium, the phase of the reproduced chroma signal is corrected, and the phase corrected reproduced chroma signal is interpolated to increase its bandwidth and then non-linearly de-emphasized to reduce the noise contained therein. The interpolation is performed on adjacent pixels of four consecutive fields of the phase corrected reproduced chroma signal, and occurs before non-linear de-emphasis to reduce flicker.
摘要:
A recording mode discriminating circuit corresponding to reproduced signals of first and second recording modes in which a carrier frequency of frequency-modulated luminance signal becomes high and low includes a first bandpass filter using an upper side band wave frequency of the first recording mode as a central frequency thereof, a second bandpass filter using a predetermined carrier frequency of the second recording mode as a central frequency thereof, a discharge control circuit for flowing or interrupting a current of a first predetermined value in response to the presence or absence of the first bandpass filter when the reproduced signals are supplied, a charge and discharge control circuit for flowing or interrupting a current of a second predetermined value smaller than the first predetermined value in response to the presence or absence of the output of the second bandpass filter, and a capacitor commonly connected to the discharging circuit and the charging and discharging circuit, wherein the recording modes of the reproduced signals are discriminated on the basis of a voltage across the capacitor. Also, there is a magnetic recording and reproducing apparatus, to which the above-mentioned recording mode discriminating circuit can be suitably applied.
摘要:
In a nuclear fuel reprocessing plant for processing a used nuclear fuel by a nitric acid solution, the present invention provides a nuclear fuel reprocessing plant characterized by including electrolytic reduction means for reducing the valence of oxidizing metal ions consisting of the nuclear fuel and dissolved in the nitric acid solution while they are kept under the ionic state. In a processing method of a nuclear fuel reprocessing plant for processing a used nuclear fuel by a nitric acid solution, the present invention provides also a corrosion-proofing method of a nuclear fuel reprocessing plant characterized in that electrolytic reduction is carried out so that the valence of oxidizing metal ions consisting of the nuclear fuel and dissolved in the nitric acid solution is reduced while the metal ions are kept under the ionic state and NOx gas is also generated. The invention is directed to provide a nuclear fuel reprocessing plant and its corrosion-proofing method which prevents corrosion of equipment without allowing the precipitation of corrosive metal ions in a nitric acid solution as the metals.
摘要:
In a boiling water-type, nuclear power plant, deposition of radioactive substances on the surfaces of out-of-core components in the primary cooling water system in the nuclear power plant is suppressed by injecting an alkaline element into reactor water in the presence of more than an amount of the oxygen formed by nuclear fission of the reactor water and dissolved in the reactor water, particularly without hydrogen gas injection, during the nuclear heatup operation period of a boiling water type, nuclear power plant and circulating the injected alkaline element through the primary cooling water system of a nuclear reactor, thereby forming an oxide film on the surfaces of out-of-core components in the primary cooling water system of the nuclear reactor. Exposure of plant personnel to radioactivity can be reduced thereby. The present boiling water-type, nuclear power plant is provided with a means for forming such oxide film.