Abstract: A keyboard has a plurality of key operated switches, each including a key having a manually engagable key surface. The keyboard selectively determines the function produced by operation of the key operated switches, and displays on each key its current function. The display provides a sensible output indication corresponding to the current function of each key, and includes an elongate strip symbol bearing member located alongside each key and lying in a plane generally perpendicular to the plane of each key surface.

Abstract: A system and method for limiting the number of simultaneously switching outputs of an integrated circuit chip to at or below a predetermined limit for the chip during a short, predetermined time window by dynamically arbitrating request signals from discrete on-chip logic elements for assignment of output pins according to the priority of the request signals based on the type and intended use of output signals from such elements, and the immediate state of the integrated circuit chip.

Abstract: A priority encoder, for determining one of a plurality of channels requesting service simultaneously, includes a selecting circuit provided between a channel determining circuit and a channel memory. The determining circuit selects one of channels to be served in a fixed priority mode or rotating priority mode and generates a next channel signal. The channel memory supplies a stored channel signal, which indicates a previously served channel, to the determining circuit for determining the one of channels in the rotating priority mode. The selecting circuit selects the stored channel signal in the fixed rotating mode and the next channel signal in the rotating priority mode, and supplies it to the channel memory. Owing to this structure, the last channel obtaining the service in the previous rotating priority mode is held in the channel memory until the priority encoder becomes the rotating priority mode followed by a temporary fixed priority mode.

Abstract: A color picture tube device equipped with a static convergence adjuster for outer electron beams. The magnetic lines of force of the quadrupole field produced by the adjuster have substantially straight vertical portions. The device is capable of suppressing broadening of the vertical diameters of the spots of the outer beams. Deterioration in the resolution concomitant with adjustment of the convergence of the outer beams can be suppressed.

Abstract: A keyless lock system for a vehicle includes a card for transmitting a radio signal, at least one onboard antenna for receiving the radio signal, and a control unit for allowing and preventing keyless lock and unlock operations in dependence on the existence or nonexistence of the card in a predetermined area near the antenna. The control unit monitors the position of at least one monitored door, and produces a card warning signal each time the monitored door is closed if the card is absent in the vehicle.

Abstract: A two wire/three wire utility data communications system for remotely reading utility meter registers. In the two wire version, a hand-held reading unit is inductively coupled over two wires via a port located remotely from a meter register. Alternatively, a meter interface unit (MIU) may be connected directly to the register via three wires. Each register includes one or more wheel position encoders. An AC interrogation signal is applied by the reading unit to encoder circuitry at the meter which powers the circuitry and causes the position of each encoder wheel to be read. In the two wire mode, register display information (e.g. the current meter reading) is transmitted back to the reading unit by varying the load (impedance) presented by the register side of the circuit. This causes a corresponding variation of the amount of current drawn from the reading unit. The current-modulated signal is decoded by the reading unit and converted into a register reading.

Abstract: A remote control apparatus has a plurality of manipulating buttons fitted in a plurality of windows, respectively, formed in a casing member, each of the manipulating buttons being formed of a transparent material and having a lower portion provided with a switch actuating projection and an upper portion disposed within each of the windows for allowing user to operate the button with his or her finger. A switch array includes a plurality of switches corresponding to the plural manipulating buttons and is mounted within the casing member such that each of the switches can be changed over between ON and OFF states by contact with a switch actuating projection in the operation of the corresponding manipulating button.

Abstract: An emergency lighting system includes a lighting unit having a battery which is kept in a charged condition in the presence of voltage on a power line to which the unit in connected. Upon loss of voltage, the battery is caused to discharge into a pair of flood lamps to provide emergency illumination to an area surrounding the unit. To provide for periodic testing of the unit without requiring the user to actuate a switch on the unit the system includes a radio frequency receiver in the unit which responds to signals generated by a hand-held radio frequency transmitter actuated by the user. A two stage battery charging circuit and a low voltage lamp cut-off circuit are included in the lighting unit for improved battery life.

Abstract: An interruption processing system in time division multiplex transmission system executes at a central control unit a group access for accessing in batch respective groups of a plurality of terminal units in response to at least part of superior bits of a specific address for one of the terminal units which requests an interruption, causes inferior bits of the address returned from the terminal unit requesting the interruption to the central unit, and allows the central control unit to specify the interruption requesting terminal unit on the basis of the superior and inferior bits of the address. Extremely rapid specification of the interruption requesting terminal unit is thereby made achievable, and the operational response time of the transmission system can be shortened to a remarkable extent.

Abstract: A cross connection apparatus which performs cross connection using divided VT signals, as cross connection units, obtained by division of the VT sizes foming virtual tributary (VT) signals of input side transmission line signals into whole integers by a predetermined common size unit, wherein it is possible to perform cross connection by common hardware even if a plurality of types of VT signals having different VT sizes are input.

Abstract: In order to ensure that the ignition voltage does not depend on whether a sark gap component is shielded or unshielded, a ring-shaped control electrode that makes electrical contact with the electrode not at ground potential is mounted adjacent to or on to the outer circumference of the insulator at an axial level almost equal to that of the active surface of the electrode not at ground potential. The control electrode comprises of either a metallic coating, a band-shaped strip, or a metal cap.

Abstract: Optical interference coatings useful on lamps for transmitting visible light radiation at about 90% average from 400-770 nm and for reflecting infrared radiation comprise three spectrally adjacent multiperiod stacks of alternating high and low index of refraction layers. Compared to conventional filters, these filters have a greater tolerance to layer thickness variations incurred during manufacture with little or no color shift when viewed at non-normal angles.

Abstract: A metal vapor discharge lamp has a small arc tube of a single end type. The maximum and minimum thicknesses of the wall of the arc tube and the ratio of the minimum thickness to the maximum thickness are set to the values in predetermined ranges. The set thicknesses prevents breakage of the arc tube and deterioration of the lamp characteristics.

Abstract: A security system which employs an optical key shape reader to photoelectrically derive an electrical signal from a shape characteristic of a key is disclosed. The system provides heightened security over standard key operated systems and is particularly well suited for use in motor vehicles.

Abstract: A shatter-proof fluorescent lamp which includes a glass tube, electrodes connected to opposite terminal ends of the glass tube, a phosphor layer coated on the inside surface of the glass tube, a gaseous mixture containing mercury and rare gases confined in the glass tube, at least one ultraviolet ray absorbing layer capable of absorbing ultraviolet rays of 400 nm or less formed on the glass tube, and a transparent polymer resin layer formed on the ultraviolet ray absorbing layer.

Abstract: A phosphor blend for a fluorescent lamp having four rare earth phosphors, each of which emits a narrow band of visible light energy in the visible spectrum. The color of the light produced by three of the phosphors is red, blue and green. The fourth phosphor producing light in the blue-green range improves the color rendering index of the visible light output without seriously afflecting the lumen output as compared to a blend in which only the red-blue-green phosphors are used. A fifth rare earth narrow band phosphor capable of producing energy in the ultraviolet A range can be added to the blend when it is desired to simulate various phases of natural daylight. The band of ultraviolet range energy produced can be smoothed by adding to the blend another phosphor capable of producing energy in the Ultraviolet A range.

Abstract: Disclosed in this invention are a cathode ray tube, especially glare type one, characterized in that a two-layer composite film consisting of a transparent electroconductive film and a protective film formed thereon is coated on the front panel so that surface glossiness thereof as measured by JIS Z-8741 Method 2 will become 80% or above, and a process for producing the cathode ray tube.

Abstract: An evaporable getter device, for mounting in an electron tube, comprises a holder whose bottom wall is provided with means for preventing detachment of getter metal vapor releasing material which has been pressed into the holder and which has a multiplicity of means which retard the transmission of heat in a circumferential direction through the getter metal vapor releasing material. When the getter device is heated by currents induced from a radio-frequency field generated by a coil positioned outside the electron tube large amounts of getter metal are released in a short time without detachment of material from the holder. The heat retarding means are preferably four equally spaced radial grooved formed in the upper surface of the getter metal vapor releasing material.

Abstract: Method and apparatus for operating a copier-duplicator which initially produces a master and thereafter produces copies from the master. The copier-duplicator is enabled upon receipt of a valid access code to begin producing the master and copies thereof. Counts of the number of masters and copies are accumulated. The copy count is compared against a minimum amount and each time a new master is made and if the number of copies produced is less than said minimum, a violation count is stored together with its associated access code. If the copier-duplicator is in a lock-out mode, access is denied to the access code having a violation. If in a flag mode, access to the machine is permitted even if a violation code is present. However, there is a capability of displaying all of those access codes having a violation associated therewith. It is further possible to prevent access to the copier-duplicator in the event that the number of copies or masters exceeds a maximum permissible amount.

Abstract: A selective call receiver displays messages in at least two scripts. The selective call receiver receives data including an address and a message to be displayed. A decoder decodes the data and recognizes a script select character therewithin. A memory stores at least two fonts corresponding to said at least two scripts, said scripts having different resolutions. A microcomputer is coupled to the decoder and the memory for selecting one of the fonts in response to the script select character, and a display is coupled to the microcomputer for displaying the message in the selected font.