Abstract: The invention concerns a display device for displaying graphical information, in the form of point patterns forming symbols of an arbitrary size and shape, each symbol being allocated a unique symbol code, as well as in the form of non-symbolic information, on a display unit (8) of a raster-scan type and comprising a symbol memory (13) including information on the point pattern of the available symbols, a pixel oriented image memory (2) including all graphical information to be displayed on the display unit, and a processor (1), by which the symbols incorporated in the image are read into the image memory by processing the information that is stored in the symbol memory. What is characteristic of the invention is a pixel oriented auxiliary memory (3) with the same pixel division as the image memory, each symbol in the image memory (2) corresponding to a pixel in the auxiliary memory, which pixel defines the symbol position in the image.

Abstract: A signal analyzer outputs polar coordinate data to be displayed on an image display unit employing a raster scan scheme. First and second image memories having memory formats corresponding to the screen of the image display unit are provided. A memory switching circuit switches the first and second image memories at each measurement scan so that either one of the first and second memories is set at a write side and a remaining one is set at a deletion side. The polar coordinate data is sequentially written in one of the first and second image memories, data of a previous scan written in the other of the memories is sequentially deleted, and data of both memories are read out simultaneously, so that the polar coordinate data is displayed on the image display unit of the raster scan scheme without discontinuity and in a real time manner.

Abstract: An electronic information display system which is organized as a reference information display system. The system comprises a reference source in the form of a compact disc CD ROM, which constitutes a mass read-only memory for the system. The disc contains text, graphics and/or sound data portions for a plurality of items of information. The disc also contains a list of these items together with addresses for their respective data portions. The system is processor-controlled such that the list and addresses are read from the disc into a programme memory. Using scrolling and/or selection techniques, the list can then be displayed a part at a time until a required item is found. Selection of this item will result in its data portions being transferred from the CD ROM to the programme memory where they can be accessed for use (i.e. visual or audible).

Abstract: A circular array of equally spaced, identical stationary electrodes are arranged about the center of the array and a rotary electrode is substantially arranged on a surface of the rotary member to be monitored in such a manner that M among N stationary electrodes have a maximum capacitance by being in confronting relationship to the rotary electrode according to the angular position of the rotary member, a maximum capacitance is in proportion to .theta. which is the azimuthal angle of the radius as measured from the initial end of the stationary electrode. The angular position of rotary member is identified from the stationary electrodes which are in confronting relationship to rotary electrode and are identified by measuring the output signal owing to a maximum capacitance while scanning the stationary electrodes.

Abstract: A computer accessory is disclosed that includes a module. The computer accessory comprises a module having an input port and an output port and a microprocessor circuit that generates an output signal in keyboard character code at the output port that is of selected correspondence to an input signal in keyboard character code received at the input port. Coupling components enable insertion of the module in a data transmission path between a selected keyboard and an associated computer system.

Abstract: A brake system which has a brake booster, a brake pedal which acts via a travel simulator device upon the brake booster, at least one anti-skid valve, two sensors (S.sub.p, S.sub.I) and a pulse emitter. One of the sensors measures braking pressures. The other sensor (S.sub.I) measures the displacement distances of a piston, which is displaced in the brake booster to effect braking. A comparator connected to the sensors (S.sub.p, S.sub.I) switches the pulse emitter on whenever the piston travels a longer displacement distance than is permissible at a predetermined braking pressure. The pulse emitter controls the anti-skid valve such that a driver who actuates the brake system perceives changes in braking acceleration, and these changes are intended to emphatically cause him to seek a repair facility.

Abstract: The present invention encompasses a truck mounted brake system for double axle wheel trucks with pneumatic means operable through multiple levers to move the brake beams relative to each other. The lever system includes a double acting slack adjuster responsive to load changes to vary the braking force. Different load weights on the bolster causes it to assume different vertical positions relative to the side frames and the slack adjuster to vary in length so that uniform pressure to the pneumatic means produces higher brake pressure to the wheels of fully loaded cars and lower brake pressures to partially loaded and unloaded cars.

Abstract: A signal display element for the display of more than two informations with electromagnetically excited magnetic tilting plates supported in bearings on a baseplate (1 ) and displaced axially in relation to one another, provided with at least one magnetic part each, and the magnetic axes of the magnetic parts (4) are normal to the plane of the tilting plates (3), bipolarly excitable electromagnets are provided for controlling the radiation of the tilting plates (3) about the axis of rotation and on the ends of electromagnetic cores (5) facing the baseplate (1) guide plates (6) are axially displaced, the number of the tilting plates (3) is larger at least by one, than the number of the guide plates (6), but their number is less at least by one, than the power of two with an exponent corresponding to the number of cores (5).

Abstract: An operator panel for a data input unit has a printed circuit board on which key switches corresponding to a number of commodities are arrayed. A flexible sheet is bonded over the keytops of the key switches. Photographs depicting the external appearance and shape of the commodities, or sketches showing the characteristics of the commodities, are printed on the flexible sheet at positions overlying respective ones of the keytops. The sheet has enough flexibility to enable operation of the key switches without hindrance. To input data relating to a desired commodity, an operator finds the photograph or sketch of the commodity on the flexible sheet and presses this portion of the sheet, thereby pressing the underlying commodity key switch to effect the entry of the data.

Abstract: A brake shoe assembly for a vehicle includes a generally arcuate platform, to which a pad of friction lining is attached, and which is selectively connectable to a pair of supporting webs. Each web has a plurality of radially extending peripheral projections received by corresponding slots provided in the platform. Clamp members are provided for pressing the webs against the platform such that the projections and slots cooperate to locate the webs immovably on the platform. The platform and friction lining may thereby be removed from the webs while the webs remain installed within the brake drum of the vehicle.

Abstract: A touch sensitive data input device is provided for use with the screen of a cathode ray tube. The device has an annular bezel that loosely supports a firm clear backing plate. A rear transparent sheet element that has a coefficient of thermal expansion different from that of the backing plate is loosely retained against the backing plate to avoid deformation induced by differential thermal expansions. A closely spaced apart front transparent element is placed adjacent the rear transparent sheet, their respective adjacent surfaces having mutually orthogonal electrically conductive strips that make local electrical contact when a force is applied to the front element. An annular frame over the front element is secured to the bezel. In one aspect of the invention, a gasket with both sides coated with a resilient bonding material seals the frame to the bezel to protect the zone between the transparent front and rear elements from contamination by environmental pollutants.

Abstract: A variable color display device simultaneously indicates values of first digital data in digital format and values of second digital data in variable color.

Abstract: A matrix display system including a unit made up of a plurality of modules, each module containing an array of incandescent lamps which provides a low cost assembly for displaying video images and messages. The unit also includes the necessary electronics to control the brightness of each lamp of the array in order to form images in response to a standard video signal. Relatively simple circuitry is provided for controlling the video sampling, lamp brightness levels, and lamp pre-heat power. All signals are digitized, and no adjustments are required in the display unit itself. Each lamp plugs into the display unit to facilitate replacements. The display unit is divided into a plurality of modules for rapid servicing, and to allow for the possibility of larger or smaller displays by using different numbers of modules.

Abstract: A liquid crystal drive circuit includes a first buffer circuit for outputting a selection high level segment voltage V0' using a nonselection high level common voltage V1 from a common voltage generator as a reference, and a first operational amplifier for outputting a nonselection high level segment voltage V2' having an inverted voltage level of the selection high level segment voltage. The liquid crystal drive circuit also includes a second buffer circuit for outputting a selection low level segment voltage V5' using a nonselection low level common voltage V4 as a reference, and an operational amplifier for outputting a nonselection low level segment voltage V3' having an inverted voltage level of the nonselection low level segment voltage.

Abstract: A display head for a head-up display system for use in a confined space, such as a high performance aircraft cockpit. The display head has a first part (11, 13, 23, 25) adapted to be mounted on an overhead member and the remainder (15, 21, 28, 29, 31) of the display head is pivotally mounted on the first part so as to enable it to be moved readily between operative and stowed positions. In the stowed position the display head does not obstruct movement of the user's head or present an obstruction on which the user may strike his head.

Abstract: A reflective optical wheel speed transducer system is disclosed. The system utilizes a single optical fiber to transmit light to a pair of interrupter discs, and to collect light reflected from the discs. One of the interrupter discs is stationary, and one is rotated at an angular velocity proportional to the rotational speed of a wheel. Both discs are provided with alternating, regularly spaced reflecting and transmissible areas. The reflecting areas of the stationary disc reflect a constant bias level of light to the optical fiber. The reflecting areas of the rotatable disc modulate light passing through the transmissible areas of the stationary disc at a rate proportional to the angular velocity of the wheel. Thus, the interrupter discs generate a modulated light signal that rides on top of the fixed bias signal. Decoding circuitry is provided to convert the modulated component of the light signal to an electrical signal that represents the rotational speed of the wheel.

Abstract: For an oscilloscope capable of simultaneously displaying a plurality of waveforms on a screen and capable of performing operations with respect to a selected one of the displayed waveforms, a method and apparatus for permitting an operator to select a waveform. A touchscreen mechanism provides input signals to the oscilloscope indicating when and where an operator touches the surface of the screen and a microcomputer within the oscilloscope determines from data controlling the display of each waveform and from the data provided by the touchscreen whether the operator is touching any portion of a displayed waveform. If so, the microcomputer assumes that the operator has selected the waveform touched and reconfigures oscilloscope operation such that operations are performed with respect to the waveform touched by the operator.

Abstract: A caliper brake for wide-tire mountain bicycles. Each caliper arm is pivotally mounted to a stationary pivot post of the bicycle frame via a cylindrical bushing to which the arm is press fitted. A return spring is retained around the pivot post in a normally stationary portion enabling purposeful adjustment. A brake shoe holder is mounted on one end of the caliper arm, and a roller-mounting post is secured to the other end. A cam roller is mounted rotatably on the roller mounting post by a low-friction bearing and has a circumferential groove engaging a cammed edge of a cam plate, to which a brake-actuating cable is secured. The brake shoe holder is preferably asymmetrical and is mounted for adjustment lengthwise of the caliper arm and for rotation around it and is also made adjustable as to the spacing from the caliper arm and as to the rotational position around an axis perpendicular to that arm.

Abstract: A signal display element for the display of more than two informations by electromagnetically excited tilting plates supported in bearings on a baseplate (1) and containing magnetic parts and adapted to be rotated about an axis of rotation (3), wherein the magnetic axes of the parts of the tilting plates containing the magnets (5) run normal to the plane of the tilting plate, bipolarly excitable field coils are coupled to the tilting plate (4) for controlling the rotation thereof.

Abstract: A keyboard assembly has a PC board providing a series of switch contacts and a molded rubber keyboard providing a rubber base sheet overlying the PC board and having a series of rubber keys integral with the base sheet. Each key has contacts on its bottom surface for closing each of the switch contacts when its key is depressed. Stabilizing membranes prevent the keys from wobbling or binding. The membrane snugly engages each key, and the membrane is flexible along its Z axis but sufficiently stiff along its X and Y axes to limit the movement of the keys to strictly linear movement toward and away from their respective PC board switches.