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| Number | Title | Issue Date |
| 7822798 | Dead reckoning for coordinate conversion Novel methods for converting coordinates for a position from a first coordinate system into coordinates in a second coordinate system are provided. Linear approximations of trigonometric functions are used to calculate values for the trigonometric functions when a p... | 10/26/2010 |
| 7423960 | Orthogonal frequency division multiplexing (OFDM) equalizer A novel and simplified orthogonal frequency division multiplexing (OFDM) equalizer uses a coordinate rotation digital computer (CORDIC) to convert the estimated channel effects from rectangular coordinate to polar coordinate and to compensate the phase error with th... | 09/09/2008 |
| 7379623 | Method to quickly warp a 2-D image using only integer math Systems and methods are disclosed that facilitate rapidly warping a two-dimensional image using integer math. A warping table can contain two-dimensional floating point output pixel offset values that are mapped to respective input pixel locations in a captured imag... | 05/27/2008 |
| 7369144 | Method and device for correcting the rotation of a video display A method for displaying a video image on a display screen by a scanning of the display screen along lines inclined by a first angle with respect to a reference direction by at least one electron beam modulated by a modulation signal. The method includes the steps of... | 05/06/2008 |
| 7356819 | Task distribution Methods, signals, devices and systems are provided for matching tasks with processing units. A region within a multi-faceted task space is allocated to a processing unit. A point in the multi-faceted task space is assigned to a task. The task is then associated with... | 04/08/2008 |
| 7336742 | Frequency error correction device and OFDM receiver with the device A frequency error correction device for an OFDM receiver is proposed. The receiver receives an OFDM signal with a preamble section and a payload section including pilot carriers. The frequency error correction device includes a first frequency correction unit for co... | 02/26/2008 |
| 7180384 | Universal signal modulators Universal signal modulators structures are shown which are particularly useful for selectively generating polar-modulated digital sequences from input phase and amplitude symbols and for generating quadrature-modulated digital sequences from input first and second q... | 02/20/2007 |
| 7123274 | Combining drawing system, combining drawing method, and recording medium A combining drawing system includes storage means for storing a template defining a plurality of temporary coordinate systems A and B, the template defining a plurality of layout coordinates E, F, G, H, and J defined in any of the temporary coordinate systems; outpu... | 10/17/2006 |
| 7120301 | Efficient re-sampling of discrete curves System and method for re-sampling discrete curves, thereby efficiently characterizing point sets or curves in a space. The method may also provide improved means for mapping point sets or curves to new point sets or curves for curve matching. A weight vector or func... | 10/10/2006 |
| 7082451 | Reconfigurable vector-FFT/IFFT, vector-multiplier/divider Systems and methods are described for providing a reconfigurable circuit having multiple distinct circuit configurations with respective distinct operating modes The circuit may be controllably configures to perform a fast Fourier transform function, a multiplier fu... | 07/25/2006 |
| 7079574 | Carrier phase recovery system for adaptive burst modems and link hopping radio networks A method for a carrier phase recovery apparatus in a multiple-link hopping radio system includes hopping among a plurality of radio links to receive bursts of radio signals on the plurality of radio links and determining channel information for each radio link from ... | 07/18/2006 |
| 7039494 | Controller for machine A controller that eliminates an error caused by acceleration/deceleration control, and controls the velocity of drive axes which is not represented by a rectangular coordinate system such that maximum allowable values of velocity, acceleration, and jerk of the drive... | 05/02/2006 |
| 6982726 | Non-Cartesian representation The present invention provides systems, methods, and computer readable media for manipulating and formatting data sets (e.g., 105, 106) described using different coordinate systems. One version of the invention provides a method for formatting data sets descr... | 01/03/2006 |
| 6915317 | Method of converting a linear value to an integer A linear value is converted to an integer equivalent, where a triangle OAB is considered, consisting of the origin 0 (0,0), point A (L,Y) and point B (L,0), and the conversion is accomplished by figuring out the y coordinate value Z of point P, whose x... | 07/05/2005 |
| 6876745 | Method and apparatus for elliptic curve cryptography and recording medium therefore A method and an apparatus capable of realizing at a high speed an elliptic curve cryptography in a finite field of characteristic 2, in which the elliptic curve is given by y2+xy=x3+ax2+b (b≠0) and an elliptic curve cryptography me... | 04/05/2005 |
| 6874006 | Apparatus and method for rectangular-to-polar conversion A rectangular-to-polar-converter receives a complex input signal (having X0 and Y0 components) and determines an angle φ that represents the position of the complex signal in the complex plane. The rectangular-to polar-converter determines a c... | 03/29/2005 |
| 6766343 | Method and apparatus for coordinate system conversions A method for converting between source coordinates in a source coordinate system and target coordinates in a target coordinate system includes the step of defining a coordinate system conversion tree extending from a root coordinate system and branching to a plurali... | 07/20/2004 |
| 6181983 | Method of command control for a robot manipulator Beginning with a successive commanded end-effector destination shift, the method of the invention, which includes a calculation corresponding to a special algorithm of inverse kinematics using the Jacobi Matrix in the control of a manipulator, effects an ... | 01/30/2001 |
| 6125304 | Coordinate data converting method and device thereof The present invention aims at providing a coordinate data converting method, which is adaptable to any coordinate data in different data formats, for converting coordinate data into predetermined coordinate data, and a device thereof. A conversion paramet... | 09/26/2000 |
| 6018598 | Image data processing apparatus An image data processing apparatus for adding a special effect to an input image data, which is provided with function data generating circuit for generating function data in accordance with positions of pixel data for each pixel data forming the image da... | 01/25/2000 |
| 5986604 | Survey coordinate transformation optimization A system for selecting an optimal transformation T(G2;G1) between a first ellipsoid E1 (e.g., WGS 84) in a first global coordinate system G1, relative to which the survey measurements are made, and a second ellipsoid E2 (e.g., NAD 27) in a second global c... | 11/16/1999 |
| 5982953 | Image displaying apparatus of a processed image from temporally sequential images An image displaying apparatus includes a memory, an image reader, an image processor, an image adder and a display. The memory stores a plurality of medical images including temporally sequential images of a common portion of a same patient taken at diffe... | 11/09/1999 |
| 5889822 | Signal processor with reduced complexity, and receiver comprising such a signal processor A signal processor has an X-Y rotation circuit and a phase angle control circuit, in the phase angle control circuit, an input phase being approximated by a series of consecutive, in magnitude, decreasing phase angles for forming an output vector by rotat... | 03/30/1999 |
| 5598486 | Image transformation apparatus In an image transformation apparatus, the image formed by an input video signal is stored into a memory, and the input video signal is read based on a read-address data of a predetermined read-address generator means, to execute a predetermined image tran... | 01/28/1997 |
| 5581259 | Life for old maps Methods for determining the present location coordinates of a user moving in a two-dimensional or three-dimensional space, with reference to an old map that may be inaccurate. Location coordinates (xi',yi') of two or three non-collinear landmarks in two d... | 12/03/1996 |
| 5546327 | Apparatus for calculating geometrical view factor The zenithal angle of a spherical surface is divided at regular intervals, the horizontal angle thereof is also divided at regular intervals in correspondence with each of the zenithal angles, and in addition, the intensity of each energy line emitted fro... | 08/13/1996 |
| 5530347 | Induction-based semi-automatic device and method for reading coordinates of objects with a complicated structure and inputting data thereon into a computer A device and method for reading three-dimensional information involves generating a variable magnetic field in a Cartesian coordinate system and coaxially placing first and second magnetometric sensors made up of three bi-orthogonal receiver induction coi... | 06/25/1996 |
| 5530450 | Radar scan converter for PPI rectangular and PPI offset rectangular modes A process provides radar scan conversion from radar amplitude data in polar coordinates to rectangular coordinates by a digital computer which receives (r,θ) coordinate amplitude data from a radar receiver and which supplies (x,y) coordinate amplitude wh... | 06/25/1996 |
| 5519401 | Programmed radar coordinate scan conversion A pseudo-code representation and a C language representation of a scan converter system whereby radar amplitude data specified in polar coordinates may be displayed on a computer monitor display controlled by rectangular coordinates is provided. The inven... | 05/21/1996 |
| 5483567 | Computerized method for converting polar tomographic data to a cartesian image format Tomographic data acquired in a polar reference frame is rapidly converted into data arranged in a Cartesian system suitable for processing and/or display by a program that may operate efficiently on an electronic computer. The program identifies each pola... | 01/09/1996 |
| 5432892 | Volummetric linear interpolation A technique which efficiently approximates a continuous function employs volummetric linear interpolation and implements the interpolation process in an arithmetic apparatus which calculates a value v of the function according to: ##EQU1## where... | 07/11/1995 |
| 5220615 | Apparatus for and method of hough-converting coordinate data Disclosed herein is an apparatus for and a method of Hough-converting coordinate data in a rectangular coordinate system. The apparatus includes circulating means for receiving prescribed data corresponding to the coordinate data therein so as to successi... | 06/15/1993 |
| 5202766 | Sound channel circuit for digital television receivers A circuit capable of handling all television sound transmission standards, including the "NICAM" standard. The circuit contains an analog antialiasing low-pass filter which is fed by the analog sound and video signal and followed by an analog-to-digital c... | 04/13/1993 |
| 5068808 | Imager and process An apparatus and process for the flexible and rapid manipulation of multidimensional data is disclosed. Coordinates ae transformed by the use of a plurality of transform memories, each being addressable by a coordinate of an n-tuple. Each member provides ... | 11/26/1991 |
| 5063604 | Method and means for recognizing patterns represented in logarithmic polar coordinates Image processing method and apparatus wherein candidate points are first selected in a log-polar image domain. The points may be selected by edge detection, thresholding, or any method suitable for identifying image points which are likely to lie on some ... | 11/05/1991 |
| 5051734 | Special effects using polar image coordinates Special effects using polar image coordinates produce a new class of television special effects, such as spherical mapping and kaleidoscope effects. Rectangular coordinates for an input image are converted into polar coordinates, and the polar coordinates... | 09/24/1991 |
| 4975977 | Rotation processing method of image and system therefor In an image data rotating system for applying rotation processing to input image data of a large picture plane, the image data is divided into rectangular small blocks and rotation processing is applied to the image data of each block. The rotation proces... | 12/04/1990 |
| 4939439 | Robot vision and optical location systems Robot vision and optical location systems capable of recovery of "depth" information normally lost from the two-dimensional image collected by a conventional image system comprises a radiation source for projecting a beam of light or other suitable radiat... | 07/03/1990 |
| 4837684 | Data input/output system for application system in numerical control equipment A data input/output system for an application system (AS) which is provided with a processor (6) and a memory (8) therefor and is connected to numerical control equipment (NC) to take partial charge of its NC functions. The data input/output system makes ... | 06/06/1989 |
| 4823279 | Coordinate conversion system and method for controlling an industrial robot A coordinate conversion system is provided for moving the manipulator arm and hand in repsonse to an input command signal of the 3×4 matrix type. The manipulator is provided with a fixed offset between two of the secondary wrist axes so that a stronger w... | 04/18/1989 |
