Patents Represented by Attorney Edward E. Pascal
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Patent number: 5694143Abstract: A single chip display processor comprised of a dynamic random access memory (DRAM) for storing at least one of graphics and video pixel data, a pixel data unit (PDU) for processing the pixel data, integrated in the same integrated circuit (IC) chip as the DRAM, the IC chip further comprising a massively parallel bus for transferring blocks of pixel data at the same time from the DRAM to the PDU, whereby the PDU can process the blocks of pixel data for subsequent display of processed pixel data.Type: GrantFiled: June 2, 1994Date of Patent: December 2, 1997Assignee: Accelerix LimitedInventors: Dennis Fielder, James Derbyshire, Peter Gillingham, Randy Torrance, Cormac O'Connell
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Patent number: 5677650Abstract: A ring oscillator comprising an odd number of inverters connected in a ring, and apparatus for driving the ring oscillator so that it oscillates at a frequency slightly less than its maximum oscillating frequency such that harmonics of the oscillating frequency are suppressed.Type: GrantFiled: December 19, 1995Date of Patent: October 14, 1997Assignee: PMC-Sierra, Inc.Inventors: Tadeus Kwasniewski, Maamoun Abou-Seido, Stephan Iliasevitch
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Patent number: 4688045Abstract: This invention relates to apparatus and a method of controlling the amount of delay or phase-shift which is applied to a signal received at or transmitted from each transducer in a multi-transducer antenna to produce a beam directed at a specific target point. For each transducer a first look-up table is used for storing first digital words representative of the included angle between the lines joining the target to a reference point, and the same reference point to a transducer. A second look-up table is associated with the first look-up table for each transducer, and stores second digital words representing delay or phase-shift control signals corresponding to ranges of the target relative to the reference point for each of said first digital words. Each first look-up table is addressed with an address signal representing the direction of the line from the reference point to the target, to obtain a corresponding first digital word.Type: GrantFiled: March 17, 1986Date of Patent: August 18, 1987Inventor: Donald C. Knudsen
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Patent number: 4678916Abstract: The invention is a radiation dosimeter and method of operation of its elements comprising a pair of silicon insulated gate field effect transistors integrated into the same substrate, each having a gate, a source and a drain. The dosimeter includes apparatus for measuring a first differential threshold votlage between the transistors, appartus for forward biasing the gate of the first transistor and inhibiting operation of the second, while allowing both to be subjected to ionizing radiation, and apparatus for measuring a second differential threshold voltage between the transistors following the irradiation. The first differential threshold voltage can be subtracted from the second to obtain a measure of the radiation dosage. Threshold drift and offset is thereby substantially eliminated.Type: GrantFiled: February 10, 1986Date of Patent: July 7, 1987Assignee: Thomson & Nielsen Electronics Ltd.Inventor: Ian Thomson
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Patent number: 4667093Abstract: This invention distinguishes coins by electronically checking their various masses, diameters and thicknesses. The coins are subjected to a constant acceleration force, i.e., gravity, and slide along a side of a ramp, which results in different velocities for different kinds of coins. The speeds of the coin are measured at two different times at one location on the ramp, or alternatively at two different adjacent locations along the ramp. The width and thickness of the coin are also measured. It has been found that an accurate determination can be made of the designation of the coin based on correspondence between the acceleration (which is related to the mass), the width (which is specifically the diameter of a round coin), and the thickness, or a proportional section of the width and thickness with predetermined ranges of acceleration, width and thickness.Type: GrantFiled: February 21, 1984Date of Patent: May 19, 1987Inventor: J. Randall MacDonald
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Patent number: 4660007Abstract: A graded leaky coaxial cable comprised of a center conductor, a dielectric surrounding the center conductor, and a braided conductive shield woven around and surrounding the dielectric. The shield has progressively fewer ends along its length, whereby progressively larger non-conducting gaps are formed separated by closely woven groups of carriers, thus facilitating controlled penetration of a radial frequency field through the shield.Type: GrantFiled: December 30, 1985Date of Patent: April 21, 1987Assignees: Allied Corporation, Senstar Security Systems CorporationInventors: Hugh A. Edwards, John W. Patchell
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Patent number: 4643656Abstract: A take-away device for a plastic tubing produced in a blowing process in which the tubing is flattened by squeeze rollers followed by a pair of take-away rollers. The pair of take-away rollers which have horizontal axes of rotation swivel reversingly about a vertical axis of rotation. The flattened tubing is fed to a stationary wind-up device, whereby two turning rods over which the flattened tubing is guided, are arranged between the take-away rollers and the stationary wind-up device, and swivel reversingly about the vertical axis of rotation of the pair of squeeze rollers. The first turning rod can thereby be swivelled about a first vertical axis which, together with the take-away rollers, swivels about the vertical axis of rotation of the pair of take-away rollers.Type: GrantFiled: January 9, 1986Date of Patent: February 17, 1987Assignee: Alpine AktiengesellschaftInventor: Veit-Holger Karl
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Patent number: 4630478Abstract: This invention relates to apparatus for determining the amount of liquid in a tank by measuring the pressure at the bottom and at a height above the bottom of the tank, and provides apparatus for compensating for apparent volume measurement variations caused by expansion and contraction of the tank and liquid with variation in temperature. A tube which expands in length at an exactly compensating rate varies the height of the second pressure sensor relative to the first. A further embodiment is a pneumatic system which avoids the necessity to immerse the pressure sensor, and utilizes an inexpensive single differential pressure transducer instead of two, and which cancels out the effect of any changes in zero setting of the transducer, changes in sensitivity of the transducer, or changes in atmospheric pressure.Type: GrantFiled: June 15, 1984Date of Patent: December 23, 1986Assignee: Pakwa Engineering Ltd.Inventor: Dennis Johnson
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Patent number: 4599121Abstract: A method of producing a leakage graded coaxial cable having a braided shield, in which ends of the shield wire are dropped as braiding progresses. Gaps in the shield having progressively increasing size are produced through which the radio frequency field leakage occurs, which facilitates providing a constant radio frequency field around the cable. The cable is coated with a jell flooding agent prior to extrusion of its protection jacket, which fills the interstices and gaps of the shield, and solidifies to a waxy, semi-resilient consistency. The resulting cable can be coiled and flexed, maintaining its shield reliability, and rejects water and fluids in case pinholes in the jacket occur.Type: GrantFiled: September 19, 1983Date of Patent: July 8, 1986Assignees: Allied Corporation, Senstar Security Systems CorporationInventors: Hugh A. Edwards, John W. Patchell
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Patent number: 4493080Abstract: A method and apparatus which can significantly reduce the matched filter requirements in decoding cyclic block codes, and is particularly advantageous for decoding maximal length block codes, and other cyclic block codes in which the number of codewords is .ltoreq.2.sup.k where .sup.k is the number of data bits encoded into each codeword. The signal containing the codeword is concatenated with itself, then the concatenated signal is applied to a matched filter to provide a peaking signal at some point in time as the concatenated signal is passed through the matched filter. The position of the peaking signal relative to a predetermined instant of time is sensed whereby the identity of the codeword (and thus data) can be determined.Type: GrantFiled: September 23, 1982Date of Patent: January 8, 1985Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventor: Russell J. Campbell
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Patent number: 4484076Abstract: A direct reading dosimeter having a range such that it can be used by personnel workers in the medical, nuclear and industrial fields, and provides and indication of dose rate as well as total received dosage. The dosimeter uses a semiconductor sensor of MOS or bipolar transistor or MOS capacitor form which traps positive charge under the influence of ionizing radiation. A current is applied to the sensor substrate, the voltage across a portion of the substrate is sensed, differentiated and displayed. The dosimeter circuit can be integrated and packaged in a wrist watchcase, in a probe, or other convenient form.Type: GrantFiled: November 13, 1981Date of Patent: November 20, 1984Assignee: Canadian Astronautics LimitedInventor: Ian Thomson
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Patent number: 4479661Abstract: A fork bar for motorcycles with two clamps surrounding the fork halves of the front wheel fork, which are connected to one another by two bar parts running essentially parallel to each other. The two bar parts are rigidly connected with one clamp each. The bar parts contact one another along a surface and are connected to one another by means of at least one connecting bolt running at right angles to this surface which is led through a through-hole running at right angles, on one of the bar parts. The through-hole has a larger diameter than the shaft of the connecting bolt.Type: GrantFiled: July 6, 1982Date of Patent: October 30, 1984Inventor: Richard Weigl
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Patent number: 4453257Abstract: This invention is a digital phase modulator for microwave transmitter systems. A digital signal is bandwidth limited at baseband, then is shaped to compensate for the nonlinear reflection coefficient versus bias voltage characteristics in a phase modulator. The shaped signal is applied to the phase modulator to modulate a carrier. The carrier signal is derived from a high power amplifier operating at its maximum power handling capability. Linear multiplication is then obtained, and use of linear intermediate frequency stages, up-converters as well as operation of the high powered amplifier at less than maximum power to obtain linear operation is thus avoided.Type: GrantFiled: September 21, 1982Date of Patent: June 5, 1984Assignee: Canadian Patents and Development LimitedInventors: Gerald J. P. Lo, Misel Cuhaci, N. S. Hitchcock
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Patent number: 4420284Abstract: A device for the feeding of material bars for processing machines, with which in a tube the rearward end of the bar is moved in the direction of the processing machine by a piston guided in the tube and loaded by a pressurizing medium. A loading bellows loaded by the pressurizing medium is located behind the piston and a tubular diaphragm, loaded by the pressurizing medium, is located in the tube, supported in a rotatable manner.Type: GrantFiled: May 22, 1979Date of Patent: December 13, 1983Assignee: Hans EisingerInventors: Hans Eisinger, Quido Kraus
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Patent number: 4378486Abstract: A temperature controlled timer useful for controlling the application of power to apparatus such as automobile block heaters or the like. In one embodiment the time of application of power prior to a shut off time is decreased with increasing ambient temperature. In another embodiment the duty cycle of cyclically applied power is changed so that the power on period becomes shorter and the power off period becomes longer with increasing ambient temperature. Significant conservation of power results.Type: GrantFiled: December 29, 1980Date of Patent: March 29, 1983Assignee: The Conserver Group Inc.Inventors: Maurice Yunik, David Waldman
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Patent number: 4375827Abstract: An improved workbench table top cut away at a corner to provide a rectangular rabbet, and having an extension arm extending across the corner below the top surface of the table. A U-shaped clamping member includes an elongated arm adjoining outer and inner legs, and is disposed in a plane parallel to the table top around the extension arm. The extension arm includes a hole spaced from its end. A brace bar of similar but slightly smaller dimensional cross-section as the hole joins the legs through the hole. A conventional adjustment means such as a screw is utilized to adjust the clamping member relative to the extension arm along an axis of adjustment. Narrow extensions in the elongated arm are fitted in cooperatively shaped slots in abutting portions of the legs, and pins extend orthogonally through the legs and arm extensions. A first rail extends from the extension arm across the rabbet and is fixed to the opposite side thereof, and is disposed against and in sliding contact with the brace bar.Type: GrantFiled: December 3, 1980Date of Patent: March 8, 1983Inventor: Ranko Ignjatic
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Patent number: 4365867Abstract: This invention relates to an electrically operated adjustable apparatus for a motor vehicle rear view mirror having a mirror casing, and included therein, a mirror support to which the mirror casing is connected via a first fixed junction point, and on a straight line through this first junction point and parallel thereto are two more junction points, the distance between the mirror casing and mirror support being electrically variable. The first fixed junction point is arranged to be very far from both further junction points, making a stable housing of the mirror support possible. Since both of the further junction points can be arranged on a small edge of the mirror support beside one another, it is possible to design the means for driving of both the two further junction points on the side of the mirror support which permits the mirror housing to be flat. The driving means are located preferably in a side housing unit in the vicinity where the mirror housing is connected with the motor vehicle.Type: GrantFiled: December 18, 1980Date of Patent: December 28, 1982Inventor: Roland Siefert
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Patent number: 4251536Abstract: Anticoagulant compounds have been extensively used as rodenticides during the last 20 years. In most parts of the world rats have become resistant to anticoagulants. This circumstance seriously limits the usefulness of anticoagulant rodenticides, and gives rise to the need for a novel effective rodenticide. 6-Aminonicotinamide and 6-aminonicotinohydroxamic acid have been found to be potent rodent poisons, moreso in the rat than in the mouse. They are much less toxic to other species, such as the dog. An important feature of these compounds as rodenticides is the fact that nicotinamide is an excellent and complete antidote, even when administered after toxic symptoms have appeared. 6-Aminonicotinamide and 6-aminonicotinohydroxamic acid do not have objectionable taste or odor, and hence can be mixed with food products as edible carriers.Type: GrantFiled: October 22, 1979Date of Patent: February 17, 1981Inventor: Willard J. Johnson
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Patent number: D401234Type: GrantFiled: June 19, 1996Date of Patent: November 17, 1998Assignee: Mitel CorporationInventor: Luc Forget