Abstract: A sense amplifier senses and stores data from a memory cell in an array of memory cells arranged in rows and columns. The sense amplifier includes a sense circuit having a pair of first and second complementary digit lines which senses a voltage differential between the first and second complementary digit lines and in response to the sensed voltage differential drives the first and second complementary digit lines to voltage levels corresponding to complementary logic states. An isolation circuit is coupled between the pair of first and second complementary digit lines of the sense amplifier and a pair of first and second complementary digit lines associated with a column of memory cells. The isolation circuit is operable to couple the first complementary digit line of the sense amplifier to the first complementary digit line of the column of memory cells and the second complementary digit line of the sense amplifier to the secondary complementary digit line of the column of memory cells.
Type:
Grant
Filed:
March 12, 1998
Date of Patent:
November 9, 1999
Assignee:
Micron Technology, Inc.
Inventors:
Leland R. Nevill, Ray Beffa, Warren M. Farnworth, Gene Cloud
Abstract: A sense amplifier circuit for a semiconductor memory device comprises first current/voltage conversion means for converting a current of a memory cell to be read into a voltage signal, second current voltage/conversion means for converting a reference current into a reference voltage signal, and voltage comparator means for comparing the voltage signal with the reference voltage signal. The sense amplifier circuit comprises capacitive decoupling means for decoupling the voltage signal from the comparator means, and means for providing the capacitive decoupling means with an electric charge suitable for compensating an offset voltage introduced in the voltage signal by an offset current superimposed on the current of the memory cell to be read.
Abstract: A building having a plurality of floors, a plurality of detectors, such as smoke detectors, located on the floors, and an elevator system usable for moving building occupants between floors during an emergency condition, such as a building fire. The elevator system includes a control unit that controls movement of an elevator car between selected floors within an emergency evacuation zone for evacuation of building occupants to a designated evacuation assistance floor. The vertical movement of the elevator car is controlled relative to the detection of smoke within the building to increase the efficiency of emergency evacuation. The elevator and smoke detection systems are equipped with an emergency power source for operation in the event of a power outage.
Abstract: A weapons training range provides a simulated weapons use scenario including return fire. A microprocessor selects branches from a multi-branch program and causes an image projector to project subscenarios on a display screen visible to a participant. In response to the subscenarios, the participant fires at projected threats. Return fire simulators positioned behind the display screen return fire toward the participant. Obstructions are placed in the weapons range to provide cover for the participant. A video camera and X-Y position sensor identify the X-Y location of the participant and try to detect exposed portions of the participant. Based upon the identified X-Y location and any detected exposed portions, the microprocessor aims the return fire simulators to provide simulated return fire. To simulate real world aiming, the microprocessor induces time-based and response-based aiming errors.
Abstract: A maskable data output buffer includes an output stage receiving data signals from a data coder. The signals output from the data coder are normally complementary data signals corresponding to complementary data input signals. However, in response to receiving a mask signal, the data coder forces the output signals to be other than complementary. The output stage normally generates a data output signal corresponding to the complementary data input signals. However, when the data input signals are other than complementary, the output of the output stage assumes a high impedance condition. Since the timing of the high impedance condition is determined from the data signals themselves, the timing of the mask operation is inherently properly timed to the output of the data from the data output buffer.
Abstract: The present invention is an under-pad placed between a polishing pad and a platen of a planarizing machine used in chemical-mechanical planarization of semiconductor wafers. The under-pad has a body and a plurality of thermal conductors positioned in the body to conduct heat through the body. The body has a top face upon which the polishing pad is positionable and a bottom face engageable with the platen. In operation, heat from the platen and polishing pad flows through the thermal conductors to reduce temperature gradients across the planarizing surface of the polishing pad.
Abstract: A method and apparatus for reading or strobing antifuse circuits in a memory device is described. A read signal, also called a strobe signal, is generated from a circuit which includes a model antifuse similar to antifuses employed in the antifuse circuits. The read signal is a single pulse having a duration determined by an amount of time needed to charge the model antifuse such that the read signal is long enough to be applied to properly read antifuse circuits in the memory device. A reset pulse may be generated having a duration determined by the amount of time needed to charge the model antifuse, and the reset pulse may be applied to initialize registers in the memory device and to generate the read signal.
Abstract: Quercetin chalcone, an effective, soluble and bioavailable bioflavonoid, is disclosed. Also disclosed are compositions containing quercetin chalcone in combination with an acceptable carrier and/or diluent, as well as methods for administration thereof to warm-blooded animals. Such administration is beneficial in generally maintaining good health of the animal and, more specifically, for the treatment of allergies.
Abstract: A single pull-up circuit is shared between a redundant row antifuse cell, and a redundant column antifuse cell. Additionally, a single selection circuit is shared between the two antifuse cells. A row selection signal supplied thereto selects the antifuse cell for the redundant row, while a column selection signal selects the antifuse cell for the redundant column. A small channel length transistor is employed within the latch circuit. As a result, the latch can quickly pull up a value when the antifuse cell is not blown, and quickly latch that value within the latch since an RC time constant of the latch is decreased. A pulsed pull-up signal having a very short duration is employed to enable the latch. Since the pulsed pull-up signal has a short duration, a high voltage supply V.sub.CC is provided through the latch and a blown antifuse cell to ground for only a short duration, thereby minimizing the possibility of such a low resistance current path from damaging the circuitry.
Abstract: A non-volatile integrated device having first and second dimensionally different polysilicon gate layers separated by an oxide layer for hot-carrier reliability. More specifically, the oxide and second polysilicon gate layer are selectively etched to form a second gate region over the first polysilicon gate layer that electrically contacts the first polysilicon gate in one direction and is isolated by the oxide in the other direction. Insulating sidewalls are formed over the first polysilicon gate layer regions that are not electrically contacted by the second gate layer to help isolate the second polysilicon gate and form an LDD structure within the substrate for the device.
Abstract: A cold-cathode emitter includes a high-voltage tank of a second conductivity that is formed in a substrate having a first conductivity. An emitter tip is integral with the tank and extends outwardly from the substrate. The tank forms either a drain region or a collector region of a transistor. A cold-cathode emitter device includes a drive transistor formed in a substrate of a first conductivity. The transistor includes an electron receive region of a second conductivity. An emitter tip is integral with the electron receive region and extends outwardly from the substrate.
Abstract: A fire hydrant lifting harness includes a lifting triangle, a pair of connecting cables, and a pair of rigid paddles. The lifting triangle includes two bracing members, one each at two corners, forming eyelets therein. For each eyelet, a cable passes through it and the cable is wound around itself. The other end of each cable is attached to a respective lifting paddle in a similar manner. The paddle is made from a rigid material and includes a bend, between the two ends, so that the paddle does not contact the head of the fire hydrant. The end of the paddle opposite from where the cable connects includes an aperture designed to accommodate one of the ports from the fire hydrant. For lifting, the port cap is removed, the paddle is placed around the port and against the hydrant, and the port cap replaced. A lifting force then raises the fire hydrant lifting device which in turn raises the fire hydrant.
Type:
Grant
Filed:
November 17, 1997
Date of Patent:
November 2, 1999
Assignee:
Taurman Distributing & Manufacturing, Inc.
Abstract: A wash station assembly and method for washing selected samples in a sample containing assembly. The wash station assembly includes a wash station having a frame and a fluid dispensing assembly connected to the frame. The fluid dispensing assembly has a selector valve that is connectable to a plurality of fluid lines and is adjustable to allow only one of the fluids to pass through the selector valve at a time. An array of syringes is coupled to the selector valve and positioned to receive the fluid passing through the selector valve. Each syringe includes a check valve that prevents backflow of fluid or air into the syringe through the pipetting needles. A distribution manifold is connected to the selector valve and receives the fluid passing through the selector valve. The manifold has a plurality of distribution channels coupled to the syringes, to direct the fluid into the syringes. Each distribution channel has a manifold valve therein that prevents backflow of fluid into the manifold from the syringes.
Abstract: A hard polishing pad with a porous surface for use in chemical-mechanical planarization of semiconductor wafers. The polishing pad has a body with a planarizing surface upon which a slurry may be deposited, and a plurality of particles are suspended in the body. The body is made from a continuous phase matrix material, and the particles are made from a substantially incompressible material that is soluble in the slurry. As a wafer is planarized, the particles at the planarizing surface of the polishing pad dissolve in the slurry and create pores in the pad. Also, because the particles are substantially incompressible, they reinforce the pad to provide a hard, substantially incompressible pad.
Abstract: There is disclosed a diagnostic sensor device comprising a plurality of sensor probes, a detection device, and a computer for analyzing the signals generated from each sensor probe by multivariate statistical analysis. The plurality of sensor probes comprise a substrate that allows transmission of a signal and a partially selective surface coating the substrate wherein the partially selective surface binds proteins from a biological fluid by multiple, noncovalent interactions, and with the proviso that the partially selective surfaces of each sensor probe in the diagnostic sensor device be different. The diagnostic sensor device can be used as a method for diagnosing disease states in humans and animals, wherein the disease states are characterized by altered protein character and behavior of a biological fluid.
Type:
Grant
Filed:
April 15, 1992
Date of Patent:
November 2, 1999
Assignee:
The Board of Regents of the University of Washington
Abstract: A method and apparatus for selectively conditioning a planarizing surface of a polishing pad. In one embodiment, a conditioning system has a carrier assembly with an arm that may be positioned over a polishing pad, a conditioning element coupled to the arm, and an actuator coupled to the arm to move the conditioning element into engagement with the planarizing surface of the polishing pad. The conditioning element is an abrasive member, such as an abrasive disk or a brush. The conditioning system may also have a controller operatively coupled to the engagement actuator to control an operating parameter of the conditioning element as a function of the distribution of a surface characteristic across the planarizing surface of the polishing pad.
Abstract: An absorbent dressing for absorbing exudate from a wound is disclosed. The absorbent dressing contains a plurality of dried absorbent hydrogel particles sealed within a porous container. The porous container is non-adherent to the wound, and the hydrogel particles remained sealed within the container after absorbing the wound exudate. In a preferred embodiment, the particles are dried polyacrylonitrile hydrogel particles, and the porous container is in the form of a sachet bag made from nylon, cotton, polyester, polypropylene and the like.
Type:
Grant
Filed:
February 3, 1997
Date of Patent:
November 2, 1999
Assignee:
ProCyte Corporation
Inventors:
Haig P. Bozigian, Guy Gendron, Janelle Roberts
Abstract: A computer system and method concurrently process transactions directed to computer devices coupled to a bus agent. The method transmits first and second transaction requests from one or more computer processors across a computer bus to the bus agent. The bus agent transmits the first transaction request to a first computer device coupled to the bus agent. In addition, the bus agent transmits the second transaction request to a second computer device before the bus agent has received a transaction response to the first transaction request from the first computer device, thereby concurrently processing the transaction requests. The bus agent includes plural device managers each uniquely associated with one of the computer devices. Each device manager employs a queue pointer into a transaction queue to track each transaction involving the computer device associated with the device. manager.
Type:
Grant
Filed:
April 24, 1998
Date of Patent:
November 2, 1999
Assignee:
Micron Electronics, Inc.
Inventors:
A. Kent Porterfield, Paul A. LaBerge, Joe M. Jeddeloh
Abstract: Methods for targeting cytotoxins to target sites by administration of a combination of conjugates are provided. Novel cytotoxic combinations for use in such methods are also provided.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
November 2, 1999
Assignee:
NeoRx Corporation
Inventors:
Alan R. Fritzberg, Paul G. Abrams, John M. Reno, Donald B. Axworthy, Scott S. Graves, Sudhakar Kasina