Abstract: A pager receiver includes an addressable data memory for storing sets of digital frequency data for application to a frequency synthesizer which responds to each set of frequency data to tune the pager receiver to a channel or frequency identified by the frequency data, and a process controller which controls both the storing in the memory of the frequency data identifying a plurality of channels or frequencies and the reading out of the frequency data one set at a time in sequence in searching for a paging signal being transmitted to the paging receiver.

Abstract: A virtual control apparatus for emulating a video mixer through a computer, wherein the computer can receive data and command information from its own command input devices. The data and command information are mapped into data in format recognizable by the CPU within the computer. The resulting data and command are stored in the memory of the computer and/or transferred to the video mixer for immediate video manipulation. Data transfer between the video mixer and the computer is implemented through a communication tool, which establishes the protocol of communication between the computer and the video mixer. Edit decisions from the video mixer can be transferred to and saved in the computer memory for subsequent use. Also disclosed is a video communication tool between a video mixer and a computer.

Abstract: A self-contained, computer controllable, video synchronization and frame pulse signal generator for generating a video synchronization signal, such as video black burst, and a video frame pulse signal indicating the presence of a video signal frame. The present invention can be connected as a subsystem within an existing personal computer having an open architecture (e.g., as a plug-in interface board in a PC-AT.RTM.). The video synchronization signal is useful as a master synchronization signal source within a video signal processing system (e.g., an off-line video editing system). The video frame pulse signal is synchronized to the video synchronization signal and can be selectively gated under computer control to produce an interrupt signal useful as a stimulus for a computer's software interrupt routines within a video signal processing system.

Abstract: A television apparatus comprises a display for a video signal and a panning control circuit. The panning control circuit counts the horizontal lines, or half lines, and generates a vertical reset signal delayed by a variable pan delay relative to the vertical synchronizing component of the video signal. The pan delay varies in a first range for vertically panning the video signal down and varies in a second range for vertically panning the video signal up. The first and second ranges are mutually exclusive to control interline flicker of the panned video signal when successive fields have different numbers of horizontal lines. The first range is less than the number of horizontal lines in each field and the second range is greater than the number of horizontal lines in each field and less than the number of horizontal lines in each frame.

Abstract: An laminated article heater terminal assembly and connector for electrically uniting a source of electricity with a conductive polymer film laminated between two nonconductive materials. The terminal assembly includes a conductive metal foil tab and a terminal body further including dimples and first and second foldable shoulders which act in unison to mechanically grasp the conductive metal foil tab. A plurality of terminal assemblies are then captivated in a connector.

Abstract: A film-to-video frame image convertor includes a 3-2 pulldown frame convertor for converting signals representing input film frame images, having a lower associated film frame image rate, to signals representing output video frame images having a higher associated video frame image rate. The output video frame images consist of genuine and simulated video frame images, which correspond to actual input film frame images and multiple input film frame images, respectively, in accordance with a 3-2 film-to-video frame pulldown. Each genuine video frame image consists of two video field images corresponding to two actual film field images from the same film frame image. Each simulated video frame image consists of two video field images corresponding to two actual film field images from different film frame images, with one of the two video field images being a duplicate of a video field image in an adjacent video frame image.

Abstract: An apparatus for monitoring and testing a twisted pair, particularly useful for an Ethernet network. First and second DC currents alternated with one another are applied to both ends of the line, asynchronously. By monitoring the potential on the line, a determination is made as to the condition of the line. For example, shorted, crossed, improperly terminated or open conditions can be detected. A visual indication of the condition of the line is provided and additionally, the visual indication provides an indication of the traffic level in the network.

Abstract: A voice over circuitry comprises a comparator for comparing a fader signal to a predetermined threshold level which may be determined during a rehearsal. The output of the comparator is connected to a two part display. When the fader signal is greater than the threshold level, the first part of the display is activated and when the fader level is less than the threshold level the second part of the display is activated. Neither of the two parts of the display are activated when the fader signal equals the threshold level. Based on the state of the display, the fader signal is adjusted as necessary to equal the threshold level. Thus, the mixing fader may be set quickly, accurately and consistently to the desired depth of fade during a mixing session.

Abstract: In a telephone answering machine, a detector for a automatic disconnect function uses a first amplifier to detect, amplify, and invert small input signal changes, and second amplifier to detect large input signal changes and a logic arrangement responsive to the output signals of the first and second amplifiers to detect the presence of only the small input signal changes.

Abstract: The invention provides a thermal design of a catheter where the active electrode is partially covered by a heat conducting and electrically insulating heat-sink layer for localizing and controlling an electrical heating of tissue and cooling of the active electrode by convective blood flow. The invention further comprises a current equalizing coating for gradual transition of electrical properties at a boundary of a metallic active electrode and an insulating catheter tube. The current equalizing coating controls current density and the distribution of tissue heating.

Abstract: In an interpolating method for interpolating interpolated data between discrete items of digital data, there are obtained values of (2.sup.n-1) number of interpolated points which divide, into 2.sup.n -number of almost equal portions, the interval between two intermediate items of data, which are among four consecutive items of data with the exception of two items of data at both ends thereof. These values are obtained from the four consecutive items of data using a bit-shift operation and an addition/subtraction operation. For example, let g(x.sub.i-1), g(x.sub.i), g(x.sub.i+1), g(x.sub.i+2) represent the data values of four, i.e., first through fourth, consecutive points x.sub.i-1, x.sub.i, x.sub.i+1, x.sub.1+2. Three interpolated points are interpolated between the two intermediate points x.sub.i, x.sub.i+1 by computing an interpolated value f(P.sub.i) at a point P.sub.i intermediate the two intermediate points x.sub.i, x.sub.i+1 in accordance with the following equation:f(P.sub.i)=[g(x.sub.i-1)+g(x.sub.

Abstract: An automatic microphone mixer for a multi-microphone audio system in which each microphone audio channel is provided with a control channel including a comparator that compares the microphone output, as an A.C. signal, with a D.C. threshold signal, and that switches the microphone channel to "on" condition when the microphone signal exceeds the threshold; the threshold signal starts at a maximum level for a time T1 and then decreases as a function of time. A D.C. offset is added to the threshold signal in order to prevent low-level extraneous noise sources from activating a channel. All of the control channels are coupled to a threshold signal restoration circuit that drives the threshold signal back to its maximum level each time an audio channel is switched "on." An audio channel that has been switched "on" remains "on" for a time T2 substantially longer than the time T1.

Abstract: A broadband antenna system including a frequency-dependent antenna and a frequency-independent antenna coupled to the frequency-dependent antenna. The antenna system can be arranged so that a dipole or monopole antenna is coupled to the inner or outer termination points of a spiral antenna. When the dipole antenna is coupled to the outer termination points of the spiral antenna, the elements of the spiral antenna may be extended.

Abstract: This is a specialized hand-held and battery-powered unit for field testing of backflow valves. It displays and prints a permanent record of simultaneous source- and discharge-port pressure values and their difference. To reduce operator distraction and confusion during backflow tests the source and discharge values are automatically equalized, bringing the difference to zero, whenever the actually sensed pressures are within a threshold differential such as 0.2 pounds per square inch. Preferably two pressure sensors are provided for connection to source and discharge ports respectively, yielding independent analog electrical signals representing the pressures; and two independent analog-to-digital converters respond to the two sensor signals respectively. Digital input signals from the converters pass to a microprocessor--which controls a digital display to show the three values continuously.

Abstract: An improved ion source is provided with multiple filaments and wiring for selectively connecting various combinations of filaments to a current source. In one embodiment an additional filament is a spare filament which is connected to the current source when the primary filament burns out. This decreases down time due to filament replacement. In another embodiment, an additional filament operates simultaneously with a primary filament to provide a more homogenous electron cloud and to increase filament life.

Abstract: A means for precisely identifying the location of an error in a computer program executing in a microprocessor is provided by an instruction complete counter circuit that counts each of the program instructions completed by the microprocessor up to the time of an error in execution.

Abstract: In a cellular mobile telephone system wherein a mobile station is provided with a status indicator which provides a HOME indication when the mobile station communicates with a base station in its home system and a ROAM indication when the mobile station communicates with a base station in a "visited" system, the particular indication that is provided by the mobile station is dependent upon the system identification data (SID) that is received from the base station with which the mobile station communicates. The mobile station also includes a status order control message sensor for sensing an indicator status order control message transmitted by the base station which serves to selectively activate or deactivate the status indicator at the mobile station, notwithstanding that the indicator had been activated previously by the received SID.

Abstract: The universal remote control system includes a computer having a memory and code data for creating appropriate IR lamp driver instructions for causing an infrared signal generator to emit infrared signals which will cause specific functions to occur in a specific controlled device, for operating a variety of devices to be controlled, stored in the memory of the computer.

Abstract: An apparatus and method by which a flat film-type resistor is intentionally caused to thermal-shock fracture in response to a predetermined high-voltage overload condition. A stressed spring wire is mounted on such film-type resistor and connected in circuit with it. A predetermined solder and temperature gradient are employed to hold the spring wire in bent condition until the solder melts, whereupon the spring flexes and the circuit breaks. Heatsink portions are provided in the circuit board for such resistor, and receive terminal pins thereof.

Abstract: Read column conductors and write column conductors of a memory array are addressed by respective triggerable sequential pulse generators which, upon receiving respective trigger pulses, provide respective read and write address pulses to respective column conductors of the array. Data to be stored is written in parallel to cells of the memory a column at a time at a rate determined by the write sequential pulse generator and is recovered a column at a time at a rate determined by the read sequential pulse generator. Advantageously, (1) the ratio of the read and write rates may be selected to provide time compression, time expansion or constant delay of video data; (2) additionally data may be written and read concurrently without bus contention and (3) addressing is simplified by a timed application of trigger pulses to the pulse generators whereby there is no need for application to the memory of binary addressing data.