Abstract: Signals outputted from microphones 111 and 112 are inputted through filters 118 and 119 to noise suppressing sections A and B. One having smaller power is selected from output signals S107a and S107b by switching a selection switch SW in a signal power comparing section 117, to which the output signals S107a and S107b have been inputted, and a transmission signal S108 level-adjusted by a level adjuster is outputted. In the noise suppressing section A (similarly in the section B), microphone output signals S102 and S103 are processed by an adder 113a and a subtracter 114a, a signal S105a outputted from the subtracter 114a is inputted to a subtracter 116a through a filter 115a having a transmission function Fa(z) decided by the positions of the microphones 111 and 112 and a noise suppression signal S107a obtained by subtracting the signal S105a from a signal S104a outputted from the adder 113a is outputted.

Abstract: The invention provides an acoustic echo canceler which realizes sufficient echo suppression processing on an auditory sense which matches with an amount of calculation and realizes a good speech quality. The acoustic echo canceler includes a first analysis filter bank for dividing a reception signal into a plurality of sub-bands, a plurality of adaptive filters for individually producing false echo signals from the reception signal after divided into the sub-bands, a second analysis filter bank for dividing an input signal into a plurality of sub-bands, a plurality of subtractors for subtracting the false echo signals corresponding to the sub-bands from the input signal after divided into the sub-bands, and a synthesis filter bank for composing outputs of the subtractors. The acoustic echo canceler further includes a band information calculation section for estimating influences of the echoes for the individual sub-bands and determining a priority order based on the estimation.

Abstract: A light condensing plate (13) is disposed on the side of a rear surface of an LCD (2). A light guiding plate (9) is disposed on the side of a rear surface of the light condensing plate (13). A back light (5) is disposed on the side of a rear surface of the light guiding plate (9). The light guiding plate (9) has a light diffusing surface (10) formed on its surface opposed to the light condensing plate (13) and a reflection surface (11) formed on its surface opposed to the back light (5). The light guiding plate (9) has a light condensing surface (12) formed on its upper end portion so as to be opposed to an external light admitting window (6) defined on a viewfinder barrel (1). A lid (8) for opening and closing the external light admitting window (6) is provided on the viewfinder barrel.

Abstract: The user observes a liquid crystal display panel screen positioned within a lens barrel through a lens. An infrared LED that emits pulses of light and a phototransistor are positioned in an eyecup against which the user's eye is pressed. An ambient light detecting circuit provides a control signal showing whether or not the user's eye is pressed against the eyecup and a control signal showing the amount of ambient light on the basis of the output signal of the phototransistor. A control circuit controls the luminance of a backlight unit according to the control signals. When the user's eye is not pressed against the eyecup, the display luminance is reduced to zero and the display is turned off. The display luminance is enhanced only when the amount of ambient light is large. Thus, needless power consumption can be avoided, and the screen can be satisfactorily observed even if a large quantity of light enters into the ocular part where the ambient light is bright.

Abstract: Thin film devices including a film of a functional organic material, inorganic material or mixtures which are either insoluble or sparingly soluble in water, and deposited by electroplating. Particles of the functional material are dispersed in a micelle solution of a surfactant which is oxidizable and reducible by electrolysis in a colloidal state. Thin film devices prepared include color filters, optical recording media, electrochemical photoreceptors, nonlinear switching elements, and other devices requiring thin films of materials which are substantially insoluble in water.

Abstract: A bidirectional nonlinear resistor for use as a nonlinear active element having a highly insulating organic film formed on a first conductor by polymerizing in an electrolytic solution containing a supporting electrolyte and a soluble organic compound, and a second conductor identical or not identical in kind with the first conductor formed on the organic film is provided. An active matrix substrate including a plurality of the bidirectional nonlinear resistor elements may be used to have a liquid crystal display panel. In a preferred embodiment, the electrolytic solution includes an alkali hydroxide as a supporting electrolyte so that dopant need not be removed after formation of the film. The electrolytic solution which is electrolytically polymerized to form the insulating organic film includes a monomer, preferably pyrrole, pyrrole derivatives, phenol or phenol derivatives, dissolved in an electrolytic solution.

Abstract: Thin film devices including a film of a functional organic material, inorganic material or mixtures which are either insoluble or sparingly soluble in water, and deposited by electroplating. Particles of the functional material are dispersed in a micelle solution of a surfactant which is oxidizable and reducible by electrolysis in a colloidal state. Thin film devices prepared include color filters, optical recording media, electrochemical photoreceptors, nonlinear switching elements, and other devices requiring thin films of materials which are substantially insoluble in water.

Abstract: Thin film devices including a film of a functional organic material, inorganic material or mixtures which are either insoluble or sparingly soluble in water, and deposited by electroplating. Particles of the functional material are dispersed in a micelle solution of a surfactant which is oxidizable and reducible by electrolysis in a colloidal state. Thin film devices prepared include color filters, optical recording media, electrochemical photoreceptors, nonlinear switching elements, and other devices requiring thin films of materials which are substantially insoluble in water.

Abstract: A stereo microphone unit adapted to be installed in a video camera or the like, includes a cabinet, two nondirectional microphones disposed with a predetermined distance therebetween on respective walls of the cabinet for collecting an outside sound signal, delay circuits for delaying each output of the microphones by a time period corresponding to the predetermined distance, and signal subtractors for subtracting the output of the delay circuit relative to one microphone from the output of the other microphone. A stereo audio signal is provided only with regard to the output sound signal of any frequency lower than a predetermined frequency of 6 kHz or so.

Abstract: A bidirectional nonlinear resistor for use as a nonlinear active element having a highly insulating organic film formed on a first conductor by polymerizing an electrolytic solution containing a supporting electrolyte and a soluble organic compound, and a conductor identical or not identical in kind with the first conductor formed on the organic film is provided. An active matrix substrate including a plurality of the bidirectional nonlinear resistor elements may be used to have a liquid crystal display panel.

Abstract: A solid-state imaging device having a scanning circuit and a photoconductive film formed in layers on a semiconductor substrate, and a process for forming the same, wherein high resolution with substantially no color mixing is attained. An electrode layer is formed over the semiconductor substrate for providing the plural electrodes, and a photoconductive film is formed over the electrode layer. A first transparent electrode is produced over the photoconductive film, after which a resist pattern is formed on the first transparent electrode layer corresponding to the pixels. The first transparent layer and the photoconductive film are etched according to the resist pattern to spatially isolate adjacent pixels in the first transparent layer and the photoconductive film. Adjacent pixels are isolated by etching, using the resist pattern, that part of the electrode layer on which are disposed the first transparent electrode layer and the photoconductive film between isolated pixels.

Abstract: A solid-state imaging device having a scanning circuit and a photoconductive film formed in layers on a semiconductor substrate, and a process for forming the same, wherein high resolution with substantially no color mixing is attained. An electrode layer is formed over the semiconductor substrate for providing the plural electrodes, and a photoconductive film is formed over the electrode layer. A first transparent electrode is produced over the photoconductive film, after which a resist pattern is formed on the first transparent electrode layer corresponding to the pixels. The first transparent layer and the photoconductive film are etched according to the resist pattern to spatially isolate adjacent pixels in the first transparent layer and the photoconductive film. Adjacent pixels are isolated by etching, using the resist pattern, that part of the electrode layer on which are disposed the first transparent electrode layer and the photoconductive film between isolated pixels.

Abstract: A magnetic recording medium having, on a non-magnetic support, a magnetic recording layer of a mixture of a ferromagnetic material and an organic lubricant, which magnetic recording layer is prepared by the simultaneous vacuum evaporation process to result in improvements upon the surface strength and slip characteristics.

Abstract: A xeroradiographic material comprising a substrate at least one surface of which is electrically conductive, and an X-ray sensitive layer provided on the conductive surface of the substrate and essentially consisting of an organic binder, .gamma.-form crystal grains of a bismuth oxide-based compound oxide and n-type semiconductor grains dispersed in the organic binder. The material is made by dispersing these grains in an organic binder solution, applying the dispersion onto the conductive surface of the substrate, drying the coat of the dispersion at a temperature in a range not lower than the boiling point of the solvent but below the softening point of the organic binder to form an X-ray sensitive layer, and heat-treating the X-ray sensitive layer at a temperature in a range not lower than the softening point of the organic binder but below the temperature at which the organic binder begins decomposing.

Abstract: A photographic sensitive material is described comprising at least one photographic sensitive layer provided on a plastic film base through a subbing layer, wherein the improvement comprises said subbing layer containing fine particles of at least one electrically conductive crystalline metal oxide selected from ZnO, TiO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, MgO, BaO, and MoO.sub.3, or a compound oxide thereof having a volume resistivity of 10.sup.7 .OMEGA. cm or less.

Abstract: A magnetic recording medium comprising a non-magnetic support having thereon a vapor-deposited solid film of a ferromagnetic material formed by vacuum evaporation, on the surface of said magnetic recording medium being further provided a vapor deposited film of an organic lubricant, a macromolecular material or a mixture thereof.

Abstract: In a process for producing a stabilized oxymethylene copolymer by heat-melting, at a temperature ranging between the melting point of the copolymer and a temperature 100.degree. C.

Abstract: A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a continuously stirring-type mixer having two stirring shafts having a plurality of plate-like paddles fixed thereto the cross-section of each of said paddles taken perpendicularly of the axial direction of the stirring shaft having a shape of a convex lens, an ellipse or a quasipolygon inscribing a phantom circle at each vertex, one of said paddles facing another paddle fixed to the other stirring shaft and said one paddle being positioned such that it rotates while the edges thereof keep a slight clearance from the inner surface of the barrel and the other paddle; polymerizing the starting mixture while moving it toward the discharge opening by the rotation of the paddles, the improvement wherein the profiles of the paddles are changed, or the arrangement of the

Abstract: An image forming material comprising a support having thereon a layer composed of a Ge-S composition or a Ge-S-X composition wherein X represents at least one element selected from the group consisting of Al, Si, Mg, Ti, V, Mn, Co, Ni, Sn, Zn, Pd, In, Se, Te, Fe, I, P and O which undergoes a structural change capable of being detected optically, electrically or chemically upon exposure imagewise to light wherein the Ge-S or Ge-S-X composition layer has a thickness of at least about 300 A and contains therein at least one element selected from the group consisting of Ag, Cu and Pb in an amount of more than 2 atoms of Ag, Cu and/or Pb based on 100 atoms of the Ge-S composition or the Ge-S-X composition.

Abstract: An image forming material comprising a support having thereon a layer composed of a Ge--S composition or a Ge--S--X composition wherein X represents at least one element selected from the group consisting of Al, Si, Mg, Ti, V, Mn, Co, Ni, Sn, Zn, Pd, In, Se, Te, Fe, I, P and O which undergoes a structural change capable of being detected optically, electrically or chemically upon exposure imagewise to light wherein the Ge--S or Ge--S--X composition layer has a thickness of at least about 300A and contains therein at least one element selected from the group consisting of Ag, Cu and Pb in an amount of more than 2 atoms of Ag, Cu and/or Pb based on 100 atoms of the Ge--S composition or the Ge--S--X composition.