Abstract: A system for feeding and controlling low intensity obstruction lights, involving low power drain especially in radio stations powered by solar cells includes:a sub-system which not only generates the energy necessary to feed the obstruction light, but also detects solar intensity;a control sub-system which delivers energy to the obstruction lights, triggered in correspondence to a light threshold, generates indicator signals on the operating state of the main on/off switch and the power circuit breaker and generates a lamp failure control for telemetering purposes and fault controls for the individual obstruction lights for local displaying purposes; and a low luminous intensity and low power drain lighting sub-system.

Abstract: An apparatus for determining the angle and height of a rotary power saw blade by sensing the angle of the saw blade from the vertical and the sine of the angle with respect to a horizontal reference as the blade height is changed. A display unit converts the sensor output to a visual indication.

Abstract: Graphics display system having a moving cursor, such as a cursor, for selecting a displayed entity with the capability of determining which one of several lower level entities in the vicinity of the cursor is to be selected. The correlation of a cursor with a entity intended to be selected is performed by calculating an index that does not represent the actual distance, which is time consuming, but rather represents a value, more quickly calculated, such that the size order among the indices is the same as the size order of the distances they represent.

Abstract: To improve the reliability of operation of an anti-skid braking system, and to provide a warning indication if malfunction should occur in such a system (ABS), a pressure-responsive switch (6, 62, 63) having two switching elements (S.sub.1 S.sub.2 ; 43a, 44a, 43b, 44b, 46a, 46b, 47a, 47b) is connected to a pressurized hydraulic brake fluid connection line to a control valve for a vehicle brake, the switches providing, respectively, control signals of different levels of pressure applied thereto, and, in case of failure of one switch to respond to a higher pressure level, at which time a pump motor is to be energized to resupply the pressure, a second switch, responsive to a lower pressure value, is provided, providing a further warning indication and, if appropriate, disconnecting the ABS with a disconnect indication to the operator that the braking system is placed back under operator control.

Abstract: A railway vehicle motion detector that monitors vibrations within the vehicle and the acceleration thereof to provide an indication of the condition of motion of the vehicle. The motion detector is adapted to be mounted on any railway vehicle, and in particular on the last vehicle of a railway train, and to be incorporated into a system that monitors and remotely displays a plurality of train status conditions. The motion detector includes a transducer (10) that converts the vehicle vibrations and acceleration into an electrical output signal. A velocity circuit (12) selectively passes and integrates a range of frequencies of the transducer output signal that are reliable indicators of vehicle motion to obtain a velocity signal having a magnitude that is proportional to a change in the velocity of the vehicle and a polarity that is indicative of the direction of a change in velocity.

Abstract: A DTE can control the modems attached thereto by transmitting command messages over the data path and analyzing report messages supplied by the modems in return. Each command message is identified by a specific header. A command message intended for a remote modem (34) is intercepted by the local modem (30) and reformatted so as to obtain a supervisory message that is then transmitted at the rate of one bit per baud. A command message intended for a remote multichannel modem (48) is transmitted either by a supervisory message or in the data mode of operation.

Abstract: An arrangement provides for the wireless transmission of a measuring signal from a sensor to an evaluating unit by a pair of first electrical coils that are temporarily inductively coupled with one another. The sensor is supplied with energy by a second pair of electrical coils that are also temporarily inductively coupled with one another. The sensor includes a power supply circuit means for receiving a low-frequency energy signal from the second pair of electrical coils and supplies an energy signal to a transmitting oscillator means. The transmitting oscillator means responds to at least one measured physical quantity and provides a medium-frequency measurement signal to be transmitted over the first pair of electrical coils. When used in a tire pressure control system, this arrangement provides for a reliable transmission of signals over a relatively large transmission path without strict mounting tolerances, while complying with governmental regulations.

Abstract: A remote utility reading and control system includes a central utility use data bank which communicates by communications link with a plurality of relay modules located at power sub-distribution transformers. Each relay module separately addresses and communicates by PLC with a number of site units in its locality. The site units may include on/off controls for buildings, light systems or single pieces of equipment, or may include utility meters or real power meters. The PLC communication utilizes error checking and message verifying to acquire valid status or measurement signals, which are then transmitted to the central data bank. A CRC error code identifies faulty messages. After multiple interrogation, five responses are stored, and a message is confirmed only when three of five reponses are identical. Systems for electricity, water, and gas are described.

Abstract: In a timing signal generating apparatus for generating a timing signal showing that a rotating member has reached a target rotational angle position, the apparatus comprises a first generator for generating scale pulses every time the rotating member rotates N degrees, a second generator for generating a reference pulse used for discriminating a prescribed scale pulse from other scale pulses, and a calculator for performing a calculation in which a target rotational angle position of the rotating member is the dividend and N is the divisor and outputs first and second calculation data representing the quotient A and the remainder B respectively. The apparatus is responsive to the reference pulse, the scale pulses and the result of the first calculator and produces a first timing pulse indicating the timing when the rotating member has assumed a rotational angle position indicated by N.times.

Abstract: A method and apparatus allows a user to scan through a predetermined character set through the implementation of a continuously variable volitional signal, and for selecting a specific character. The scanning rate is proportional to the user controlled volitional signal.

Abstract: Conventionally, such a sound producing device as a ceramic buzzer is constructed separately from its electric circuit that vibrates the buzzer. In contrast, in the present invention, one wall surface of a resonance frame (16) having a sound producer (3) fixed thereto is defined by a lid in the form of a printed circuit board (22) formed with a sound release hole (12), and electric parts constituting an electric oscillation circuit are arranged on the lid, thereby providing a sound producing device which is very compact and whose sound producing characteristics is stabilized.

Abstract: A cathode ray tube for use in a touch panel system that is capable of recognizing touch positions along a coordinate axis of a touch display surface of the system has a flat glass faceplate capable of propegating surface acoustic waves. An input surface wave transducer, acoustically coupled to the touch display surface, serves to launch a burst of surface waves on that surface. At least one array of wave reflective elements are disposed in or on the touch display surface for directing the surface waves derived from the input trasnducer across the touch display surface.

Abstract: A transmitter unit of a remote control system includes a key function display unit for identifying the function of key elements of the transmitter unit at various steps of a control sequence for one or more controlled devices. The memory for storing character-representative information for identifying the functions of the key elements of the transmitter and corresponding function control instructions is contained in the controlled devices rather than in the transmitter unit. This allows for the addition of new controlled device without modification of the transmitter units.

Abstract: A keyboard is provided, in which only alternate keys of each row of keys and only alternate keys of each column of keys are connected to switches; and in which a square array consisting of four adjacent keys is associated with each of a plurality of symbol fields. Each of the keys, with the exception of the terminal keys of the rows and columns, are associated with four symbol fields provided with respective symbols. The switches are connected to row conductors associated with respective rows of keys and to column conductors associated with respective columns of keys. In conjunction with such a keyboard, commercially available decoders can be used for decoding if interrogation input signals are delivered to consecutive input terminals and consecutive output terminals are tested for the presence of output signals.

Abstract: A remote control device for the joint or successive remote control of radio receivers, record players, tape recorders, television receivers and the like comprises a body having a plurality of control buttons for the items of equipment to be remotely controlled. The device further has a plurality of superimposed drop sheets each of which is associated with a specific item of equipment or function type. With the aid of a flap which is pivotally mounted on the body and a gripper provided on the flap, it is possible to raise the drop sheets, so that only that particular sheet required for the desired function type is present on the device. The drop sheets have openings through which the operating buttons can project. In the vicinity of these operating buttons a reference to a specific function is provided on each drop sheet.

Abstract: An improved planning purpose display device includes a board bearing a display surface with an electrically isolated matrix of conductors embedded therein, with the display surface having at least one hole at each intersection of conductors. A plurality of LCD display elements are conductively mountable in the holes of the display surface, and each LCD display element is controllable by a microprocessor therein. A computer connected to the conductors is adapted to communicate with the LCD display elements mounted on the display surface, interrogate each LCD display element with respect to its position on the display surface, the contents of the memory of its microprocessor and/or to program the memory of that microprocessor.

Abstract: The invention relates to a display system using a remote control handunit having "pointing function" capability for moving a cursor displayed on a display screen by changing the angular position of the remote control handunit. Specifically, the individual transmitting transducers of the remote control handunit are driven with signals having a predetermined phase relationship relative to each other such that the resultant phase received by the receiver is indicative of transmitter angular position.

Abstract: A signal transmission system over building or house wiring includes noise reduction circuit to reduce noise including asynchronous noise and synchronous noise. Received pulses are sampled in a given interval and the number of continous pulses in question during the sampling interval is counted. The pulses in question are ignored as noise if the number of pulse counting is less than a predetermined reference count and the pulses are treated as true signals if the number is more than said reference count.

Abstract: An electronic cam switching mechanism is used instead of a mechanical cam switching mechanism of a stamping machine or press. The former comprises a write/read memory which conducts track-wise characterizing signals ("0," "1," and "01," "10," "00"), address-controled by a travel distance measuring device to subsequent devices, by means of which the control signals corresponding to the binary positions of the mechanical cams are formed.

Abstract: A capacitive switch is formed of a dielectric layer having a first electrode disposed on or adjacent one surface and a second electrode and a conductive pad, such as a touch pad, disposed on the opposite side of the dielectric layer. The conductive pad and the second electrode are in superimposed relationship to the first electrode. The conductive pad and second electrode may be side by side, with a small gap between or they may be superimposed on one another with a further dielectric layer between. Such switches may be formed into an array and may be combined with a display by being superimposed over a display medium, such as an electroluminescent layer, having a display electrode on one side and the first electrode on the other side. In this arrangement all the components, except the display medium and the display electrode, are of transparent material.