摘要:
An image capturing device having a function of clamping an image signal. When the image capturing device is activated, a synchronous signal generating section begins creation of a horizontal synchronous signal, and a counter begins counting a pulse of the horizontal synchronous signal. When the counted value reaches a predetermined value, the clamping capability control section changes the level of a clamp mode signal to an H level. During a period from the start of power supply to the image capturing device to the raising of the level of a clamp mode signal to an H level, a clamp pulse generating section sets a longer width for a clamp pulse than in a normal operation so that a switch element of a clamping circuit remains in an on state in a longer period, whereby a smaller time constant for clamping is set. After elapse of a predetermined period, the switch element is controlled so as to remain in an ON state in a normal period, which is relatively short, whereby a larger time constant for clamping is set. With this arrangement, noise which would be caused with a small clamping time constant is suppressed.
摘要:
An image signal is processed which include an ineffective image signal period including a vertical optical black signal and an effective image signal period including a horizontal optical black signal and an effective image signal and following the ineffective image signal period, an AGC circuit for amplifying an image signal at an optional gain and a clamp circuit for clamping the reference level of the amplified image signal are included, and the clamp circuit performs clamping at clamp time constants different from each other when clamping the vertical optical black signal and when clamping the horizontal optical black signal. Thereby, an image having a preferable quality is obtained.
摘要:
The invention provides a process for producing an alcohol, including the step of hydrogenating a glyceride in the presence of a catalyst, adding water, or a process for producing an alcohol, including the step of hydrogenating a glyceride in the presence of a catalyst and in the presence of from 0.5 or more of water per mole of the starting glyceride.
摘要:
The present invention provides a process for producing lower alkyl fatty esters from fatty acids and lower alcohols, wherein lower alkyl fatty esters are produced in higher yield with a reduction in the amount of the remaining fatty acids. The process of the present invention comprises bringing fatty acids into contact with gaseous lower alcohols in fixed bed(s) charged with a weakly acidic solid catalyst by countercurrent operation, by co-current operation and subsequent countercurrent operation or by pseudo-countercurrent operation, thus feeding and reacting the fatty acids and lower alcohols in fixed-bed reactor(s) charged with a weakly acidic solid catalyst to produce lower alkyl fatty esters.
摘要:
A semiconductor flow velocity sensor having a semiconductor substrate and an electrical heating unit arranged on the substrate. The sensor located in the fluid flow to be measured can electrically detect the radiation from the heating unit which varies depending on the velocity of fluid flow. Thermal insulator is provided between the semiconductor (silicon) substrate and the heating unit so as to thermally shield the substrate from the heating unit. On the thermally isolated area of the substrate is provided an external sensor circuit so as to enable to increase the integration of the sensor.
摘要:
A floating head device has a floating surface for imparting a floating force for floating from a recording surface by air flow formed between the floating surface and the recording surface and a suction surface for imparting a sucking force in a relative movement of a head slider to the recording surface of a recording medium. The air inlet end of the suction surface has grooves and is disposed in down-stream of the air flow from the air inlet end of the floating surface.
摘要:
The invention provides a method of using an alcohol and a primary or secondary amine as the starting material to produce the corresponding secondary amine easily at a high yield and a catalyst used therein. The invention relates to a film-type catalyst for production of a tertiary amine, which is used in producing a tertiary amine from an alcohol and a primary or secondary amine as the starting material, and a process for producing a tertiary amine, which includes reacting an alcohol with a primary or secondary amine in the presence of the film-type catalyst.
摘要:
The invention provides a method of using an alcohol and a primary or secondary amine as the starting material to produce the corresponding secondary amine easily at a high yield and a catalyst used therein. The invention relates to a film-type catalyst for production of a tertiary amine, which is used in producing a tertiary amine from an alcohol and a primary or secondary amine as the starting material, and a process for producing a tertiary amine, which includes reacting an alcohol with a primary or secondary amine in the presence of the film-type catalyst.
摘要:
The present invention relates to a method of producing a fatty acid ester, including reacting fat and oil with an alcohol in the presence of at least one third component, wherein the third component is in a supercritical state or subcritical state under the condition of preventing a uniform phase from forming.
摘要:
For allowing processing of a material into an intended three-dimensional configuration having different processed depths while suppressing an influence exerted on a processed configuration by a configuration of a transparent portion, a processing device includes an SR light source 1 for emitting SR light, an X-ray mask having a transparent portion of a predetermined configuration for passing the X-rays emitted from the SR light source 1, and exposure stage 3 for oscillating the X-ray mask and the material relatively to each other in accordance with a movement pattern determined based on the processing configuration of the processing material for moving the X-ray mask and the material relatively to each other and thereby oscillating the region where the material is irradiated with the X-ray passed through the transparent opening.