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| Number | Title | Issue Date |
| 8030967 | Method and apparatus involving a receiver with a selectable performance characteristic A circuit has a programmable mode control section, and a receiver section with first and second input terminals and an output terminal. The method and apparatus involve setting the mode control section to one of first and second states in response to user input, and... | 10/04/2011 |
| 7949912 | System and method of securing data stored in a memory A system and method of securing data stored in a memory are disclosed. The method comprises storing a payload data in a memory in one of first and second states related by a transform, reading the payload data from the memory, attempting to use the payload data for ... | 05/24/2011 |
| 5924048 | Automated material balance system for hydrocarbon reservoirs using a genetic procedure A system for producing a material balance solution for well patterns in a hydrocarbon reservoir is described that automatically optimizes the fluid allocation factors for each well used in determining the solution. The system automatically optimizes estim... | 07/13/1999 |
| 5771170 | System and program for locating seismic events during earth fracture propagation A system and computer program for determining the location of a seismic event in an earth formation zone using seismic traces corresponding to the event collected from one or more sensors in the zone. A graphical data window is displayed of the seismic tr... | 06/23/1998 |
| 5757663 | Hydrocarbon reservoir connectivity tool using cells and pay indicators A program and method for identifying connectivity of well perforation locations to cells of a reservoir description that meet selected pay criteria. First, a pay indicator is assigned to the cells that satisfy the selected pay criteria. A connectivity ind... | 05/26/1998 |
| 5600347 | Horizontal image expansion system for flat panel displays A system for horizontal expansion of low resolution display modes onto high resolution displays including flat panels at a variable scaling factor is disclosed. The system may be combined with known methods for vertical expansion to allow low resolution d... | 02/04/1997 |
| 5570321 | Seismic velocity model optimization method using simulated annearling to determine prestack travel-times A method of determining a reference seismic velocity model that includes lateral and vertical variations in a stratified subterranean medium is disclosed. The invention recognizes that each unknown prestack traveltime curve may be expressed as the sum of ... | 10/29/1996 |
| 5471570 | Hardware XOR sprite for computer display systems Method and apparatus for adjusting the color of the sprite in display systems, so that the sprite is always distinctively visible irrespective of the underlying displayed data. A palette DAC of a display system is provided with sprite control logic, which... | 11/28/1995 |
| 5428687 | Control voltage generator multiplier and one-shot for integrated surround sound processor A surround sound processor for presentation of a stereophonic source program on a multiple loudspeaker array surrounding the listening area. The processor includes input signal conditioning and matrixing circuits, a control voltage generator responsive to... | 06/27/1995 |
| 5414754 | System for providing proactive call services utilizing remote monitors A proactive call services system serving as a new node or switching network within a closed subsystem is disclosed. Remote monitors provide information necessary to allow the provision of enhanced services to the closed subsystem, which may be a telephone... | 05/09/1995 |
| 5381465 | System for providing automatic voice messaging in a digital network environment The present invention describes an automatic voice messaging system for use in a telephone network having a calling station connectible to a first switch and a called station connectible to a second switch, with the first and second switches connected by ... | 01/10/1995 |
| 5377269 | Security access and monitoring system for personal computer A system for controlling access to a computer. Memory-resident software logic cooperates with a remote electronic key device coupled to the computer's processor, through the printer port, to disable the computer unless an authorized key is inserted in the... | 12/27/1994 |
| 5339363 | Apparatus for enhancing monophonic audio signals using phase shifters A method and apparatus for generating control voltage signals in a surround sound processor is disclosed which utilizes a one-shot monostable multivibrator for minimizing intermodulation distortion while following rapid directional changes, yet minimizing... | 08/16/1994 |
| 5323448 | System for accessing amenities through a public telephone network An amenity accessing system is provided that includes an access telephone (10) with a plurality of access keys. The telephone includes a line powered card reader (62) that interfaces with a CPU (60). Information stored in a memory (70) can then be output ... | 06/21/1994 |
| 5307712 | Tool for installing and removing filters An oil filter canister gripping tool (9) is hereby disclosed to assist in the removal and installation of an oil filter (10) on an automobile engine or similar engine and is composed of a relatively flexible strip of U-shaped material (1) having a metal b... | 05/03/1994 |
| 5307415 | Surround processor with antiphase blending and panorama control circuitry A surround processor includes a time constant processing circuit for smoothing directional information signals from a detector with continuously variable time constants in order to generate one or more control voltage signals. The time constants produced ... | 04/26/1994 |
| 5301237 | Surround sound loudspeakers A system for the multichannel reproduction of sound in which a plurality of loudspeakers connectable to a surround sound processor is disclosed. Circuits for adapting the processor to provide left and right side output signals are also disclosed. Left and... | 04/05/1994 |
| 5295156 | Modem Method and apparatus for effecting mode switching from a transmission mode to a command mode of an intelligent modem operatively coupled to a digital data device and a telephone line is disclosed. A termination of the modem's transmission mode is effected... | 03/15/1994 |
| 5295003 | Color conversion system for monochromatic optical scanner A color conversion system for optically scanning a target document or the like utilizing a monochromatic scanner connected to a computer is disclosed. The target is illuminated with a light source. The light is filtered from the light source to direct eit... | 03/15/1994 |
| 5295189 | Control voltage generator for surround sound processor A surround sound processor for presentation of a stereophonic source program on a multiple loudspeaker array surrounding the listening area, the processor comprising input signal conditioning and matrixing circuits, a control voltage generator responsive ... | 03/15/1994 |
| 5280528 | Band pass filter circuit for rear channel filtering in a surround processor A method and apparatus for generating control voltage signals in a surround sound processor is disclosed which utilizes a on-shot monostable multivibrator for minimizing intermodulation distortion while following rapid directional change yet minimizing in... | 01/18/1994 |
| 5263087 | Time constant processing circuit for surround processor A method and apparatus for generating control voltage signals in a surround sound processor is disclosed which utilizes a one-shot monostable multivibrator for minimizing intermodulation distortion while following rapid directional changes, yet minimizing... | 11/16/1993 |
| 5261072 | Compact disk data transfer system using cache memory Method and apparatus for continuously reading data from a compact disk drive to a host computer is disclosed in which the data is transferred to the computer's cache memory so that it is available to the computer's central processor for processing without... | 11/09/1993 |
| 5210873 | Real-time computer system with multitasking supervisor for building access control or the like A method is disclosed for providing a single-tasking disk operating system with multitasking capability in a real-time computer system for building access control or the like. A number of reentrant, terminate-and-stay-resident application programs are loa... | 05/11/1993 |
| 5199075 | Surround sound loudspeakers and processor A system for the multichannel reproduction of sound in which a plurality of loudspeakers connectable to a surround sound processor is disclosed. Circuits for adapting the processor to provide left and right side output signals are also disclosed. Left and... | 03/30/1993 |
| 5172415 | Surround processor A surround processor includes a time constant processing circuit for smoothing directional information signals from a detector with continuously variable time constants in order to generate one or more control voltage signals. The time constants produced ... | 12/15/1992 |
| 5153907 | Telephone system gateway interface A method and apparatus for providing enhanced call service and call routing functions from a centralized location on a telephone network line through gateway connections to service providers is disclosed. A multiple function interface located between a pa... | 10/06/1992 |
| 5104071 | Antitheft mount for vehicle appliance An appliance mounting apparatus is provided for securing an appliance such as a radio to a vehicle instrument panel structure. A radio mount replacement bracket is secured to the inner wall of the vehicle instrument panel structure within the opening for ... | 04/14/1992 |
| 5095770 | Steering bearing assembly for wheeled vehicle A steering bearing assembly is provided for connecting the front wheel and handle bars of a bicycle to the frame. The assembly includes a steerer tube, connected to the front wheel and passing through a head tube on the frame. Bearing assemblies on the up... | 03/17/1992 |
| 4972929 | Bidirectional dual disc valve assembly The bidirectional valve assembly provides for selection of retraction and extension damping characteristics which can accommodate relatively large separation of damping curves. Two cooperable valve discs or ring members are provided which function in unis... | 11/27/1990 |
| 4923057 | Electrorheological fluid composite structures Controllable electrorheological fluid composite structure elements incorporate electrorheological fluids as a structural component between opposing fluid containment layers to form at least a portion of any variety of extended mechanical systems such as p... | 05/08/1990 |
| 4907680 | Semi-active damper piston valve assembly An improved isolation system for time responsive attenuation control led electromechanical valve assembly comprising the piston of motion between spaced members is provided having a remotely actuator of a fluid damper for generating motion attenuating for... | 03/13/1990 |
| 4896754 | Electrorheological fluid force transmission and conversion device An electrorheological fluid torque transmission and conversion system provides for variable control of torque in clutch and brake applications. Communication of mechanical energy between the drive elements is accomplished by magnetic coupling to eliminate... | 01/30/1990 |
| 4733758 | Tunable electrorheological fluid mount The mount has variable volume fluid chambers interconnected by fluid passageways and containing electrorheological fluid. Valves are arranged in series with a plurality of the passageways. Each valve has a flow area greater than that of the passageway in ... | 03/29/1988 |
