Abstract: An amplifier having improved input impedance and reduced susceptibility to power supply ripple, particularly suited for use with a high impedance signal source, utilizes at least two field-effect transistors; the signal source is connected to the gate of the first FET, which is connected to a reference potential by a high resistance, whereas the source electrode of the first FET is connected to the reference potential (usually ground) through a much smaller load resistance and is also connected to the gate of the second FET. The source of the second FET is connected to the drain of the first FET and the drain of the second FET is connected to a power source, usually a low voltage source.

Abstract: A hearing aid is programmable with dual-tone multiple-frequency signals, received through the hearing aid microphone, to adjust operating coefficients of signal conditioning circuitry in the aid. A DTMF receiver filters and detects DTMF tone pairs into digital words provided to a controller for decoding, some of the digital words representing programming instructions and others representing data. In accordance with the instructions, the controller conveys the data to memory operatively associated with a plurality of control ports to the signal conditioning circuitry, with operating coefficients of the conditioning circuitry determined by the contents of the memory.

Abstract: A railroad brake pressure recorder for use with both analogue and digital break pressure manifolds monitors the signal on its analogue air brake pressure input connector. If the signal on this input exceeds a predetermined frequency, inputs are processed as coming from an analogue manifold. If it is less than this frequency, the inputs are processed as coming from a digital manifold.

Abstract: An apparatus for transferring a kinescope and a chassis, which are coupled by cabling, from one location to another includes probes which engage apertures in the chassis to pick up the chassis. A frame supports suction cups to pick up the kinescope. The probes are supported by a bar which is pivotably attached to the frame. The chassis and kinescope are thus separately engaged and released but are simultaneously moved.

Abstract: An interfacing system for integrating a wide variety of cellular communication systems with most vehicle security systems. The system includes a controller and an interfacing arrangement for matching the cellular telephone to the controller. The interfacing arrangement includes a library, stored in memory, having a plurality of unique translation tables corresponding to the protocols of a plurality of unique cellular communication systems. The interfacing arrangement further includes an initializing capability for selecting an operating protocol for the interfacing system from the library which is compatible with the protocol of the cellular communication system. Hardware and software are included for interfacing the vehicle security to the controller and for interfacing the controller to the vehicle. In a specific embodiment, the selection of cellular telephone type or make is made from the keypad of the cellular telephone.

Abstract: A so-called "one-chip" television IC includes a dual purpose input terminal for receiving a control signal representing an image property, such as a contrast, and also a signal having an amplitude within a predetermined range for enabling a test mode of operation. The control signal is generated by at least first and second control circuits. The first control circuit provides a first control signal set by a user. The second control circuit provides a second control signal in response to the image content of an image-representative signal produced by the integrated circuit, and may comprise a beam current limiter responsive to the beam current drawn by an image reproducing device or a circuit responsive directly to the image-representative signal. The first and second control signals are combined to produce a combined control signal which is applied to the dual purpose input terminal.

Abstract: An apparatus is described which controls the movement and positioning of a platen on which wafers may be mounted. The apparatus comprises a stepper motor having a motor sprocket member operatively coupled to a platen by a drive mechanism. The drive mechanism comprises a chain which cooperates with the the stepper motor by engaging with the motor sprocket member. The drive mechanism also comprises a platen chain sprocket having a platen shaft member. The platen is movably connected to the platen shaft member. The chain cooperates with the platen by engaging with the platen chain sprocket. Operation of the stepper motor rotates the motor sprocket member and drives the drive mechanism, thereby rotating the platen chain sprocket and determining the movement and positioning of the platen. The apparatus is capable of controlled movement and positioning of the platen inside processing equipment, such as ion implantation equipment.

Abstract: A modular socket for an integrated circuit package, wherein a single base is adapted to receive a plurality of replaceable contact modules having a variety of conductive lead counts. The modularity permits tooling of a single base to accommodate a variety of integrated circuit packages.The socket includes a lid pivotally connected to the base by a hinge and hinge pin. The hinge pin defines a pivot axis which is in a plane with the bottom surface of the lid to limit lateral movement on the contacts carried by the module.

Abstract: In a television receiver, employing both a beam scan velocity modulation (SVM) system and an on screen display (OSD) generator, the OSD generator selectively operates to produce characters or graphics which are superimposed on the main video picture display. During operation of the OSD generator, the SVM circuit may tend to undesirably introduce artifacts into the picture display. Circuitry is provided for selectively disabling normal SVM circuit operation during OSD operation to prevent or reduce the perception of such artifacts.

Abstract: A secondary surveillance radar system in which monopulse processing is used to obtain angle estimation of azimuth bearing, the improvement residing in a precision method, involving a monopulse qualifier signal, for identifying the maximum unambiguous off-boresight azimuth (OBA), while ensuring reduced sensitivity to Omni channel variations; the monopulse qualifier signal is developed from coherently combining the IF limited signals derived from the Sum+JDelta and Delta+jSum signals, such that two amplitude varying signals are created, such signals bearing a direct relationship to the Sum and Difference antenna pattern ratios and being independent of antenna signal power.

Abstract: An improved battery jumper cable assembly having two or more battery terminals for interconnecting a plurality of truck batteries in line, the jumper cable assembly including a length of conductive flat cable, at least one take-off stud mounted in association with the cable, and a plate member to which the stud is mounted, the plate member being assembled to a portion of the length of the flat cable to aid in mounting the stud.

Abstract: A single use disposable esophageal electrode structure is formed with a planar sheet body member. The body member carries a plurality of spaced-apart conductive electrode members. A layer of adhesive on the body member can be used to affix it to an esophageal probe. A plurality of conducting members is coupled to the body member. Each of the conducting members is in turn coupled to a respective one of the electrodes. A free end of the conducting members carries an electrical connector for connection to other electrical units.

Abstract: A miniature bulb assembly adapted to be mounted on a base board includes a socketless miniature bulb, a base portion molded of synthetic resin and a pair of terminal members. The miniature bulb is received in a bulb receiving hole at the central part of the base portion while a pair of lead wires extending from the miniature bulb are inserted through lead wire holes on the bottom wall of the base portion. Each terminal member comprises an elongated plate-shaped terminal and a base fitting portion, both of which are integrated with the base portion during a molding operation. The lead wires are connected to tongue-shaped pieces projecting from lead wire connection tabs in a clamped state. The base portion may be formed with T-shaped terminal insert holes on the opposite sides thereof such that terminal members each having a disengagement preventive tapered portion are tightly inserted thereinto from the above.

Abstract: A DRAM cell structure having a capacitance electrode with a tapered end surface is disclosed. The tapered end surface eliminates prior art structures formed during fabrication of the cell structure that decreased yield. The cell structure of this invention provides increased yield without increasing the number of process steps required to form the cell structure. A unique process for forming the capacitance electrode with a tapered end surface is also provided.

Abstract: A control circuit comprises a first detector for detecting amplitude excursions of a signal related to luminance information beyond a white level threshold during each horizontal scan. This enables the circuit to be more sensitive by responding to excursions occurring during each horizontal scanning line. A first timer, responsive to the first detector, provides a first control signal related to a minimum duration of each amplitude excursion of the signal bey ond the threshold. A switch and second timer, responsive to the first control signal, provide a second control signal which falls at a first rate to reduce the signal; and, which rises at a second rate to permit the signal to increase after termination of the amplitude excursion, until the next minimum duration excursion. The time constant for the second rate is much greater than the time constant of the first rate.

Abstract: An improved high-frequency characteristic is achieved, in an otherwise conventional hearing aid receiver transducer, by connecting each of the acoustic chambers on the two sides of the receiver diaphragm, in the receiver housing, directly through an outlet port and a sound transmission tube coupled into the ear canal of the hearing aid user; phase reversals due to resonances in the receiving acoustic chambers and tubes produce a high pass band in the output of the receiver as applied to the user's ear. An acoustically transparent contamination stop prevents contaminants (e.g. cerumen) from reaching the transducer motor but does not interfere with acoustic performance.

Abstract: A manually installable coaxial cable connector comprises a housing sleeve, a connector body, a locking ring, and a center post which co-act to permit installation of the connector on both coaxial cable and an interface port, without the use of any installation tool. Cable outer jacket retention is ensured for a wide range of braided shield percentage cables by a plurality of serrations on fingers of the connector body. A stepped feature of an annular collar on the connector body ensures metal-to-metal contact and good retention between the connector body collar and an interface port. Installation of the connector onto a properly prepared piece of coaxial cable is achieved by simply pushing the connector onto the cable, removing a protective cap and manually sliding the housing sleeve until the locking ring locks into place. The connector is slipped onto an interface port whereupon the housing sleeve is manually pushed forward to lock the connector onto the interface port.

Abstract: Clock phase shifting circuitry includes a cascade connection of inverting amplifiers for generating a plurality of relatively delayed clock signals. Buffer amplifiers couple alternate ones of the inverting amplifiers to a clock phase selection circuit for providing a desired one of said plurality of delayed clock signals. A capacitor is coupled between the output of each inverting amplifier and a point of constant potential. Respective circuits, having an input impedance which emulates the input impedance of the buffer amplifiers, are coupled to the output connections of the inverting amplifiers located between said alternate inverting amplifiers.

Abstract: A method of forming an implosion protection band for a substantially rectangular CRT is disclosed. The band has at least one mounting lug comprising a base portion and an attachment portion cooperating therewith. The method includes the steps of expanding the dimensions of the band to form at least one outwardly directed concavity therein to accommodate the base portion of the mounting lug to prevent the lateral displacement thereof, attaching the mounting lug to the band and affixing the band to the CRT to compressively force the band and the base portion of the lug against the CRT.