摘要:
A receiving antenna apparatus for receiving broadcast by satellite and adapted for mounting on a mobile body in which radio wave interruption tends to occur by obstacles, attains high-speed automatic tracking function capable of catching the satellite again in a short time just after cutting off of radio waves. In the receiving antenna apparatus, an incoming direction of radio waves is roughly detected to limit a search area and then a gain of the tuners is reduced to a value in the tracking control capable of detecting a peak and confirming a main lobe in accordance with power level of the received signal, so that a narrow and fine search may be made only in the limited search area. The antenna apparatus includes a gain setting device for varying gains of AGC of the tuners. Upon searching for the satellite, gains of the tuners are set to a first gain by the gain setting device to perform the rough search and the gains of the tuners are reduced to a second gain level lower than the first gain to perform the fine search. Thus, a time required to catch the satellite after cutting off of radio waves can be reduced.
摘要:
The present invention relates to an antenna apparatus for a moving object. It comprises a casing mountable on a moving object and a base plate rotatably supported for rotation about a first rotary shaft which is fixed to the casing. A first drive is provided for rotatably driving the base plate about the first rotary shaft. An antenna unit includes a first antenna plate having a predetermined first beam axis, a second antenna plate having a predetermined second beam axis and connecting member for connecting the first and second antenna plates, with the first and second beam axes being oriented parallel to each other and with the antenna plates being positioned at a predetermined fixed offset distance between them along a line which is parallel to the first and second beam axes. The antenna unit is rotatable about a second rotary shaft perpendicular to the first rotary shaft and second drive is provided for rotatably driving the antenna unit about the second rotary shaft perpendicular to said first rotary shaft.
摘要:
A magnetic recording medium is disclosed, which is formed by providing on a non-magnetic support, a lower layer comprising at least one of a ferromagnetic powder and a non-magnetic powder dispersed in a binder, and providing on the lower layer while the lower layer is in a wet condition, an upper magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein the upper magnetic layer has a dry thickness of 1.0 .mu.m or less, and the non-magnetic support is a multi-layer structural support comprising at least an uppermost support layer and a lowermost support layer, wherein the uppermost support layer is coated with the lower non-magnetic or magnetic layer, each of the uppermost layer and the lowermost layer comprises a biaxially oriented film comprising a thermoplastic resin containing filler particles, and the uppermost support layer has a center line average surface roughness Ra in the range defined by the following formula:Ra(Cut off: 0.25 mm)-Ra(Cut off: 0.08 mm).ltoreq.10 nm.
摘要:
Secretory immunoglobulin A preparations substantially not containing virus are produced by a process wherein secretory immunoglobulin A which might be contaminated with viruses is (1) heated about 60.degree. C. for about 10 hours, or (2) subjected to the reaction with tri-n-butyl phosphate and a surfactant and the heating as mentioned above, as liquidized form in an aqueous medium, and then polymerized matters are precipitated from the resulting solution by adding polyethyleneglycol thereto.
摘要:
A one-way damper comprising, one forming member for forming an accommodating chamber, other forming member disposed opposite to the one forming member such that the one and other forming members form the accommodating chamber therebetween and the other forming member is rotatable relative to the one forming member, a coil spring wound around the other forming member, and a viscous fluid accommodated in the chamber.
摘要:
A method of supplying parts in a system for assembling a printed circuit board by mounting the parts on a substrate at corresponding predetermined positions thereof. One or more kinds of substrates and at least one group of parts, to be mounted on the corresponding substrates, are introduced into the system lot by lot. The introduced parts on one or more previously prepared parts containers are placed so as to correspond to the substrates on which the individual parts are to be mounted, thereby providing one or more sets of the parts, each set corresponding to a respective one of the substrates. The sets of parts are supplied to a parts mounting station of the system.
摘要:
The present invention relates to a character recognition equipment which is capable of recognizing with high accuracy those characters that have poor contrast and produce variation in printing density such as characters printed on industrial products.The character recognition equipment according to the present invention is composed of an input unit group which processes in image in a plurality of window regions that are set on a character image, a feature unit group which performs calculation on values obtained by adding thresholds to the output values therefrom, and an output unit group which performs calculation on values obtained by multiplying output values from the feature unit group and adding the thresholds to the sum total thereof. Here, the thresholds and the weights can be adjusted automatically with an actual object image.
摘要:
An information processing system having an original clock oscillator for delivering at least one original clock signal K defined as a first clock signal and a plurality of information processing units supplied with the original clock signal K, wherein each information processing unit comprises clock generating means for generating at least one second clock signal K.sub.1 which is phase-locked with the original clock signal K and which has a predetermined duty cycle and a logic device whose operation timing is controlled by the second clock signal K.sub.1, and the operation timing of an interface provided between at least one pair of logic devices is synchronously controlled by the clock signal K.sub.1.
摘要:
A semiconductor integrated circuit device having a plurality of logic circuits integrated on a semiconductor substrate is provided which can operate with a power source potential difference substantially less than 5 V. The logic circuit includes a bipolar transistor having a base and its collector-emitter current path coupled between a first power source terminal and an output terminal, together with at least one field effect transistor having its gate responsive to an input signal applied to an input terminal and its source-drain current path coupled between the first power source terminal and the base of the bipolar transistor. A semiconductor switch means is also provided which is responsive to the input signal applied to the input terminal for performing ON/OFF operations complementary to the ON/OFF operations of the bipolar transistor and which has a current path between its paired main terminals coupled between the output terminal and the second power source terminal. In order to improve the operating speed, a potential difference reducing element is provided having a current path between its paired main terminals coupled between the first power source terminal and the output terminal for reducing the potential difference, which is present between the first power source terminal and the output terminal based on the base-emitter forward voltage of the bipolar transistor when the bipolar transistor is ON.
摘要:
A hanger conveyance for the transport of left-hand and right-hand automobile door assemblies from and back to a loading site through a door fitting station and then through an unloading site, which hanger has first and second door supports for the support of the door assemblies generally in parallel relation to each other. The door assemblies removed from an automobile body structure are loaded onto the respective first and second supports at the loading site and are then transported towards the door fitting station with the left-hand and right-hand door assemblies confronting first and second directions opposite to each other, respectively. At the door fitting station, the hanger is turned 180.degree. about a vertical axis to render the left-hand and right-hand door assemblies to confront the second and first directions, respectively, after one of the door assemblies has been tooled up from one side and is again turned 180.degree. about a vertical axis to render the left-hand and right-hand door assemblies to confront the first and second directions, respectively, after the other of the door assemblies has been tooled up from the same side. Thereafter, the hanger is moved towards the unloading site for the fitting of the door assemblies to the automobile body structure.