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| Number | Title | Issue Date |
| 7233687 | System and method for identifying optimized blood signal in medical images to eliminate flow artifacts In a sequence of medical image data showing tumors and blood vessels, a plasma signal is optimized to avoid flow artifacts by receiving a user input of a blood region and using the user input to seed an automated search. Each voxel is scored by time point of maximum... | 06/19/2007 |
| 7213008 | Method and apparatus of creating application-specific, non-uniform wavelet transforms A method and an apparatus of designing a set of wavelet basis trained to fit a particular problem. The method and apparatus include constructing a neural network of arbitrary complexity using a discrete and finite Radon transform, feeding an input wavelet prototype ... | 05/01/2007 |
| 6976012 | Method and apparatus of using a neural network to train a neural network A method and apparatus of training a neural network. The method and apparatus include creating a model for a desired function as a multi-dimensional function, determining if the created model fits a simple finite geometry model, and generating a Radon transform to f... | 12/13/2005 |
| 5596562 | Controlling method and apparatus for supporting hard disk and/or CD-ROM drives through the PCMCIA interface An apparatus for controlling to support hard disk and/or CD-ROM drives through the PCMCIA interface of a notebook computer system. The apparatus comprises a PCMCIA controller connected to the ISA bus of said computer system for implementing PCMCIA interfa... | 01/21/1997 |
| 5329478 | Circuit and method for estimating gradients A circuit and method for estimating gradients of a target function using noise injection and correlation is provided. In one embodiment, an input signal is combined with an input noise signal and the combined signal is input to a circuit which computes th... | 07/12/1994 |
| 5168461 | Switched capacitor differentiators and switched capacitor differentiator-based filters Backward-mapping switched capacitor (SC) differentiators for MOS technology integrated circuit implementation, as well as forward mapping (FM) and bilinear-mapping (BIM) SC differentiators, are disclosed. The SC differentiator is employed in filters eithe... | 12/01/1992 |
| 4819199 | Extrema coder employing noisy limiting amplifier stages An extrema coding circuit comprising a differentiator and a noisy limiting-amplifier. The limiting-amplifier may comprise any one of a number of commercially available limiting-amplifier integrated circuits, for example, a limiting-amplifier front end of ... | 04/04/1989 |
| 4580227 | Device for determining and following the instantaneous coordinates of the extreme value of a curve The invention relates to a device for determining and following the instantaneous coordinates of the extreme value of a curve y=f(x), characteristic of a system having an input x and an output y. The device comprises a multiplier having two inputs and one outp... | 04/01/1986 |
| 4454604 | Virtual time base direct synchronizer and method therefor A system for virtual time base direct synchronization in which a hopping sequence signal grossly synchronized with a received hopped base band has a fine synchronization correction performed by a virtual time shift of the hopping reference through first d... | 06/12/1984 |
| 4418566 | Gas analyzing techniques Gas analyzing techniques for monitoring the amount of oxygen in the exhaust of motor vehicles. An oxygen sensor produces a sensor signal having a sensor value proportional to the partial pressure of the oxygen produced by the motor vehicle. Processing cir... | 12/06/1983 |
| 4409667 | Process and device for the derivation of an analog electric signal The present invention relates to a process and device for obtaining the derivation of an analog electric signal P varying slowly as a function of a variable t. According to the invention, a combination of analog means, digital means, analog-to-digital con... | 10/11/1983 |
| 4331877 | Transverse tomography with optical filtering The disclosure is directed to an apparatus and method for generating a two-dimensional back-projected image of a slice of an object, and also to an optical filtering apparatus and method which, inter alia, is useful therein. Successive beams of light are ... | 05/25/1982 |
| 4289397 | Laser ceilometer signal processing means For use in a pulsed-laser lidar such as a laser ceilometer, there are shown several examples of signal processing means for separating desired pulses due to targets such as clouds from strong background signals due to suspended particles causing poor visi... | 09/15/1981 |
| 4138728 | Electronic tachometer with variable bandwidth differentiator An electronic tachometer, for use in a disk drive system, to sense velocity of an accessing head mechanism relative to data tracks being accessed, comprises a first feedback loop comprising a variable bandwidth differentiator for receiving a position sign... | 02/06/1979 |
| 4106096 | Derivative measurement by frequency mixing A dual-frequency technique for electronically measuring high-order derivatives by frequency mixing is described. The technique utilizes an ac modulation at two distinct but synchronous frequencies to produce a derivative signal at a useful difference freq... | 08/08/1978 |
| 4068811 | Hotbox detector An apparatus for determining the temperature of railroad car wheel journals (i.e., "hotbox" detector) includes a sensor including a pyroelectric cell responsive to infrared radiation signals, which are focused onto the cell, to output voltage signals as a... | 01/17/1978 |
| 4062632 | Constant modulation index technique for measuring the derivatives of device parameters Described is a technique for generating directly certain derivatives of device parameters by measuring the device response to ac modulation under conditions of constant modulation index. In particular, the technique as it applies to measuring directly idF... | 12/13/1977 |
| 4025763 | Process control including simulating a derivative Control of a process in response to a process signal which is incrementally altered at periodic intervals is accomplished by performing a simulated differentiation of the process signal prior to use of the process signal as an input to a process controlle... | 05/24/1977 |
| 4021658 | Angular rate deriving apparatus The circuitry illustrated utilizes duty cycle conversion means for providing signals indicative of Sin and Cos of an angle θ as well as the derivative of Sinθ and Cosθ. The derivative signals are then duty cycle multiplied by the Sinθ and Cosθ signal... | 05/03/1977 |
| 4011440 | System for generating an angular rate signal from an angular position signal utilizing a constant amplitude-variable carrier phase signal The instant invention relates to turn-rate signal generating circuitry for interrupting slaving of the directional gyro and roll erection of the vertical gyro in a heading, attitude and reference system whenever the turn-rate of the vehicle on which the s... | 03/08/1977 |
| 3946691 | Autopilot employing improved hall-effect direction sensor An improved marine compass employs a Hall-effect device which provides an output signal related to the relative rotation of the compass card therein. When the Hall-effect device is mounted on a course dial whose position with respect to the compass' lubbe... | 03/30/1976 |
