Abstract: A video display unit and deflection system are synchronized with a first video signal. A detecting circuit determines whether the first video signal has more than one field type. A second video signal has more than one field type. A multiplexer combines the first and a second video signals for a simultaneous video display. A video signal processor is responsive to the detecting circuit and has two modes of operation. In a first mode of operation, when the first video signal has more than one field type, all fields of the second video signal are an output to the multiplexer. In a second mode of operation, when the first video signal has only one field type, only one field type of the second video signal is an output to the multiplexer. The video signal processor has a memory for storing the second video signal. Only one field type of the video signal is written into and read from the memory during the second mode of operation.

Abstract: A bulk metal chip resistor includes an elongated resistor element having terminals at its opposite ends. The terminals are formed by coating the opposite ends of the resistor element with a conductive material. Insulative material may be molded around the center portion of the resistor to provide structural support, and the ends of the resistor can be bent downwardly so as to cause the central portion to be raised when the resistor is mounted on a circuit board. A modified form of the invention includes wrapping the resistance element around the ends of a rectangular substrate so that the substrate provides structural support. Another modified form includes placing four terminals at the four corners of the resistor element.

Abstract: A video system comprises a video display having a wide format display ratio for displaying a video signal. A signal processor has an interpolator and a first in first out line memory having asynchronous write and read ports for selectably expanding and compressing a picture represented by data in the video signal. The picture is cropped to define a subset of the picture for display by controlling writing of the data into the line memory. A microprocessor for controls provides control signals with selectable time durations and selectable phases relative to a synchronizing component of said video signal for selecting boundaries of the subset of the picture for display. The microprocessor can select the time durations and the phases responsive to user commands.

Abstract: A method and apparatus are disclosed for measuring the magnetic properties of magnetic materials by generating flux lines through a balanced magnetic core and through a magnetic sample placed adjacent to the core. Increased sensitivity is accomplished through a modulation of the flux in the magnetic core which is measured and subsequently demodulated to yield an electrical signal corresponding to the magnetic properties of the material being tested.

Abstract: A noise damping system for use in connection with an automatic blood pressure measuring device. The system includes a manifold divided into two expansion chambers in fluid communication with one another by way of a chamber port. The pressure waves and acoustic noise generated by a pump and modulated valves are attenuated by expanding in one chamber against a resistance caused by the chamber port and by expansion in the second chamber against a resistance caused by a manifold inlet/outlet port leading to the ambient environment.

Abstract: A display system controls vertical zoom and panning. A video display has a first format display ratio. A circuit, for example one generating a raster, maps on the video display an adjustable picture display area represented in a video signal having a vertical synchronizing component. The picture represented in the video signal has a second format display ratio. A vertical height control circuit, for example one controlling the vertical height of the raster by controlling the vertical deflection current, selectively enlarges the picture display area relative to the video display. A panning control circuit adjusts in phase a vertical blanking interval relative to the vertical synchronizing component to control which portion of the enlarged picture area is displayed and which portion is not displayed. The format display ratios can be the same or different, for example 16.times.9 for the video display and 4.times.3 for the picture, in the latter case.

Abstract: Conversion of an RF signal amplifier from an unbalanced signal configuration to a balanced signal configuration is provided while including an image trap for both sides of the balanced circuit. The grounded side of the secondary of a double tuned circuit is lifted from ground to provide a balanced circuit configuration. A trap filter is provided in the balanced circuit configuration by a pair of small capacitors coupled between the balanced secondary leads to appropriate signal nodes.

Abstract: A silicon chip is micromachined so that a plurality of tines extend radially and coplanarly from an outer peripheral surface of a circular base. First and second mounting members extend from the base for mounting the base to a support. The first mounting member is disposed generally perpendicularly to the second mounting member. A pulse generator applies electrostatic or electromagnetic pulses to successive free ends of the plurality of tines so that each tine momentarily vibrates in the plane in rotational sequence along the circumference of the base. The successive vibrations establish a net angular momentum approximating a spinning wheel so that rotation of the sensor about the axis of one of the first or second mounting members causes the other mounting member to experience a deformation due to coriolus force.

Abstract: A hardware implementation of a digitized image corrector is disclosed that converts a colorimetric representation of an original image into a new representation based upon the colors of the original and target images, as well as user supplied artistic parameters. The digitized image corrector receives digitized Red, Green and Blue input signals that comprise a colorimetric representation of an original film scene, and generates digitized Red, Green, and Blue output signals according to the specifications of SMPTE 240 M. The digitized image corrector is comprised of four identical hardware correction modules, which are coupled to receive correction parameters from an external source. Each module has a bypass switch for entering a bypass mode, which is used for reconfiguration of the module's correction parameters without affecting the output image.

Abstract: EMI suppression technique that pseudorandomizes the positive or negative going transitions that are used to represent one binary state in a transmitted digital signal such as in an MTL-3 data format. By pseudorandomizing the selection of these transitions, substantial spreading of the spectral energy occurs. Descrambling need not occur since each transition is recognized as the encoded binary state. Thus, the data sender can encode the data and suppress EMI without any changes to the receiver's equipment.

Abstract: A digital transversal IIR filter, in which the sum of the magnitudes of a large number of coefficient multipliers (which may be real or complex) is greater than unity, may be stable or it may be unstable. The present invention is directed to (1) a test for stability in such a filter which is simpler and faster than solving a large number of polynomial equations, and (2) the repair of a filter found by this test to be unstable. Specifically, means responsive to the respective gradients of the magnitudes of chirp-z transforms of time-domain multiplier coefficient values within one or more selected localized regions of the complex in-phase (I), quadrature(Q) frequency-domain plane determine that a filter is unstable whenever the gradient of the magnitude values of the chirp-z transform within a selected localized region of the frequency-domain plane indicates that there is a pole in the frequency-domain plane that is located beyond the boundary of a frequency-domain unit circle.

Abstract: An improvement in the leak proof construction and the rotating shaft attachment means for an oil-containing bearing includes a plurality of oil-storing grooves formed on the oil-containing bearing such that the lubricant oil required by the rotation of the rotating shaft can be received and contained therein. On an outlet portion of the rotating shaft and the oil-containing bearing, there is provided an oil guiding plate which rotates with the rotating shaft. The lubricant oil escaping along the rotating shaft will be expelled by the oil guiding plate into the oil-storing grooves of the oil containing bearing by the centrifugal force generated by the rotation of the oil guiding plate.

Abstract: A connector assembly includes first and second conductive probes, first and second conductive shields respectively enveloping the first and second probes in an insulated relationship and a cover insulatingly enveloping the shields. First and second barrels may be disposed within the cover at a first axial end of the cover. Third and fourth barrels may be disposed within the cover, at the opposite axial end of the cover in enveloping relationship to respective ones of the shields. An assembly including an impedance is insulatingly supported by the third and fourth barrels. An actuator assembly insulatingly supported by the first and second barrels has (a) a first operative relationship establishing electrical continuity between the probes and between the shields and (b) a second operative relationship interrupting such continuities and establishing a circuit including an individual one of the probes, the impedance and the corresponding one of the shields.

Abstract: A multiple speaker loudspeaker system wherein an internal baffle extends the full length of the interior volume dividing the interior volume into two unequal portions. The baffle has folded portions, which is not parallel to the walls of the enclosure. Loudspeakers are mounted onto the folded portions within a first volume. The loudspeakers radiate sound into a second volume. One of the first and second volume is ported in a bandpass configuration, to the outside of the enclosure. Thus, the non-parallel portions of the baffle reduce unwanted peaks and/or cancellations in the sound emanating from the enclosure. Additionally, the baffle is secured along its width to top and bottom walls of the enclosure, thus also providing extra rigidity to the enclosure.

Abstract: A drive circuit generates a quasi-square wave for use in switching power amplifiers by supplying square wave signals which are 180.degree. out of phase, but otherwise identical, to the respective control inputs of two switching transistors. Opposite ends of the respective controlled paths of the transistors are connected to the input of the device which is being driven. The driven device input has a capacitance associated therewith, which normally results in a voltage loss as this capacitance is alternately charged and discharged. The circuit component values are selected so that this capacitance is charged while the switching transistors have yet to reach their threshold voltages, and thus at the moment when either transistor is switched to a conducting state the voltage across that transistors controlled path will be substantially zero, and the normal switching loss, which is a product of the square of that voltage, the input capacitance of the driven device, and the operating frequency, is eliminated.

Abstract: A clamp fixing structure for connecting circuit boards. The structure includes an inlet slot terminal on each end of a connecting socket and a fixing set to be assembled with each terminal. Below and adjacent to the terminal are a catch slot and fixing holes, and a vertical slide guide is on one side of the terminal. On the fixing set, at corresponding mating positions of the catch slot, fixing holes, and slide guide of the terminal are respectively hook, inserting pins, and a slide to firmly fix a metal clamp when the fixing set is assembled with the inlet slot terminal.

Abstract: A device for safely collecting and transporting solvents in a manner that can be wheeled rather than carried, including a main tank for storing the solvent, and a neck member for transferring the solvent from the storage tank to the main tank. The device has a grounding strap for safety and a sight glass for viewing the solvent.

Abstract: A security device includes a portable transmission unit that gives an instruction to start or stop security, a sensor that detects an abnormality of a tuner which receives a signal from the transmission unit and of an automobile, a sensor circuit having predetermined characteristics for discriminating the output of the sensor, and a security control section for causing a theft prevention device like a siren to be activated after output from the sensor circuit is received, wherein the characteristics of the sensor circuit can be set by the transmission unit.

Abstract: A signal slicer of a sync separator includes a comparator for generating an output signal in accordance with a difference between a black level restored video signal and a slice level. The slice level is established dynamically, in accordance with the peak level of the sync pulse between the peak of the sync pulse and the black level. When the sync pulse occurs in the video signal, the output signal of the signal slicer assumes an active, first logical state; conversely, between consecutively occurring sync pulses, the output signal assumes an inactive, second logical state. The slice level is clamped to a predetermined level to prevent the occurrence of the first logical state when no video signal is received.