Abstract: A system for surveying a subsurface formation includes one or more electromagnetic sensors located at or above the surface of the Earth. The sensors are configured to detect passive-source source signals and return signals that are based on seismoelectric or electroseismic conversion of the source signal in the subsurface formation. The system includes a processor communicatively coupled to the one more electromagnetic sensors. The at least one processor is configured to align and stack the passive-source source signals and the return signals and determine a property of the subsurface formation based, at least in part, on the aligned and stacked passive-source source signals and the return signals.

Abstract: The present invention discloses a simple method for transforming cashew nut shell liquid into an active herbicidal composition.

Abstract: The present invention discloses a simple method for transforming cashew nut shell liquid into an active herbicidal composition.

Abstract: An advertising business method which includes removable and replaceable panels for display on the backs of seats in stadium, arena and other multi-purpose venues, for making one or more visual advertisements on the surface of the seat backs. A seat back advertising panel, system, program product, and methods for enhancing and tracking target audience and user response activity, and for rewarding user response and promotional participation are also provided.

Abstract: A processing system comprises: a shared system resource; a plurality of control devices, each assignable with a task having a predetermined maximum time to complete, the control devices time sharing the system resource in the process of performing their assigned tasks in accordance with a predetermined sequence; and an arbiter circuit for regulating access of said control devices to the system resource. Each control device includes a throttle circuit coupled to the arbiter circuit and individually programmable to control in cooperation with the arbiter circuit utilization of the system resource by the corresponding control device so that each control device may perform its task within the predetermined maximum completion time thereof.

Abstract: A digital processing system comprises a central processing unit (CPU) operating in a virtual address domain for executing both operating system software and user software to perform various processing tasks; a direct memory access (DMA) controller; a memory management unit (MMU) programmed to translate virtual memory addresses to physical memory addresses; and a plurality of memory blocks for storing digital words in registers having physical addresses; wherein the DMA controller is governed by the CPU and is operable in the virtual address domain for controlling a transfer of digital words from a source block of memory to a destination block of memory through the MMU which translates the virtual source and destination memory addresses received from the DMA controller to corresponding source and destination physical addresses of the memory. Also disclosed is a method of operating the digital processing system.

Abstract: A memory management unit (MMU) of a digital processing system operating in a virtual address domain and a physical address domain comprises a memory programmable to store translation mappings between virtual addresses and physical addresses of the processing system. The memory is also programmable to store control codes representative of EDAC protection corresponding to the translation mappings. A method of operating the memory management unit (MMU) comprises the steps of: programming a memory of the MMU with virtual to physical address translation mappings; and programming the memory of the MMU with control codes representative of EDAC protection corresponding to the translation mappings.

Abstract: The present invention provides a device for generating callused skin on a fingertip of a user while simultaneously providing an individual finger and overall hand exerciser. The device forms an exposed upper surface area having a raised ridge or a series of raised ridges extending the length of the upper surface area. Grooves transect each ridge, forming a crest extending perpendicular to the length of the ridge. A series of grooves are provided along the length of the raised ridge and the overall upper surface area simulates a string of a stringed instrument.

Abstract: A storage cell of an integrated circuit is operable in a radiation environment to capture and store at predetermined time intervals a time sample of a data input signal. A signal representative of the stored data sample for each time interval is generated at an output of the storage cell. At least three data capturing circuits operate to capture and store a time sample of the data input signal at each predetermined time interval, the stored data sample of each circuit being generated correspondingly at an output thereof. Coupled to the outputs of the data capturing circuits is a circuit for generating a signal representative of a stored data sample selected from at least two of the circuit outputs. Also coupled to the data capturing circuits is a circuit for causing each data capturing circuit to capture a different time sample of the input data signal from the other data capturing circuits over each predetermined time interval.

Abstract: A multiple voted integrated circuit logic cell testable by a scan chain comprises: an odd plurality of latching registers, each register having a data input for receiving a scan chain data signal and capable of latching the scan chain data signal and generating an output signal representative thereof; a multiple vote circuit governed by the output signals of the registers for generating an output signal of the logic cell; and a circuit coupled to each latching register for altering selectively the scan chain data signal input thereto. A scan chain test system for and method of testing at least one multiple voted logic cell of the aforementioned type are also disclosed.

Abstract: Method and apparatus are provided for a new type of geophysical prospecting. The method applies an electric field to a fluid-containing porous subsurface formation to create a fluid pulse from changes in the polarization of pore fluid dipoles. The fluid pulse propagates in the subsurface as a seismic wave that may be detected by an appropriate array of seismic detectors. The apparatus is a pulsed DC or AC source for generating an applied electric field and a seismic detector.

Abstract: A conventional definition camera acquires video data relating to a portion of an image to be televised and stores the data in a higher definition capacity store. The camera is panned and tilted to acquire data relating to other parts of the image. A motion detector determines the degree of movement of the camera and controls the writing of data to the store. A spatio-temporal interpolator interpolates the video data to correct for spatial or sensitivity incompatibilities. The output from the store may again be spatio-temporally interpolated by an interpolator under control of the motion detector to compensate for movement within the image to be televised. In a further embodiment image data is acquired by a plurality of overlapping lower definition sources.

Abstract: Each of first N flip-flop stages, where N is an integer greater than one, has steered thereto an appropriate one of N bits of the data to be transmitted by a transmit write counter and a first N stage decoder under control of a transmit write clock. A transmit read counter under control of a transmit read clock steers the stored bits to a transmit data bus by means of a first multiplexer and first logic circuitry under control of a transmit read counter and a transmit channel timing signal. Each of second N flip-flop stages has steered thereto an appropriate one of N bits of received data by a receive write counter and a second N stage decoder under control of a receive write clock. A receive read counter under control of a receive read clock steers the stored bits to a receive data bus by means of a second multiplexer and second logic circuitry under control of the receive read counter.

Abstract: An aircraft undercarriage suspension includes a liquid filled telescopic suspension strut and a gas spring. Liquid displaced by the strut into the gas spring is selectively directed through alternative flow restrictors, one of which is matched for optimum damping during aircraft landing and the other of which is matched for optimum damping during taxing. A ride control valve operates on the nose wheel undercarriage to control aircraft pitching, the ride control hydraulic system being separated from the damping oil by a floating piston.

Abstract: An asynchronous digital time division multiplexer and demultiplexer combination at one communication terminal is disclosed that will multiplex first N asynchronous source data signals having a first mixture of different bit rates into a transmitted synchronous data stream having a predetermined fixed data format and a given bit rate greater than the total of the bit rates of the source data and to demultiplex second N asynchronous source data signals having a second mixture of different bit rates from a received synchronous data stream having the predetermined fixed data format and the given bit rate.

Abstract: A transmit phase locked loop receives data to be transmitted having a bit rate equal to a first given one of a predetermined number of different bit rates. A diphase demodulator responds to the transmit phase locked loop and the data to be transmitted to provide output data for transmission. A receive write timing signal and a receive read timing signal is coupled to a receive phase locked loop to compare the phase relation of the two timing signals. A diphase modulator responds to received data having a bit rate equal to a second given one of the predetermined number of different bit rates and a clock signal provided by the receive phase locked loop to provide output data for utilization. The first given one of different bit rates and the second given one of different bit rates may have equal or different bit rates.