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4618 results about "Ellipse" patented technology

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same. The elongation of an ellipse is measured by its eccentricity e, a number ranging from e = 0 (the limiting case of a circle) to e = 1 (the limiting case of infinite elongation, no longer an ellipse but a parabola).

Determining and/or using location information in an ad system

The usefulness, and consequently the performance, of advertisements are improved by allowing businesses to better target their ads to a responsive audience. Location information is determined (or simply accepted) and used. For example, location information may be used in a relevancy determination of an ad. As another example, location information may be used in an attribute (e.g., position) arbitration. Such location information may be associated with price information, such as a maximum price bid. Such location information may be associated with ad performance information. Ad performance information may be tracked on the basis of location information. The content of an ad creative, and/or of a landing page may be selected and/or modified using location information. Finally, tools, such as user interfaces, may be provided to allow a business to enter and/or modify location information, such as location information used for targeting and location-dependent price information. The location information used to target and/or score ads may be, include, or define an area. The area may be defined by at least one geographic reference point (e.g., defined by latitude and longitude coordinates) and perhaps additional information. Thus, the area may be a circle defined by a geographic reference point and a radius, an ellipse defined by two geographic reference points and a distance sum, or a polygon defined by three or more geographic reference points, for example.
Owner:GOOGLE LLC

Determining and/or using location information in an ad system

The usefulness, and consequently the performance, of advertisements are improved by allowing businesses to better target their ads to a responsive audience. Location information is determined (or simply accepted) and used. For example, location information may be used in a relevancy determination of an ad. As another example, location information may be used in an attribute (e.g., position) arbitration. Such location information may be associated with price information, such as a maximum price bid. Such location information may be associated with ad performance information. Ad performance information may be tracked on the basis of location information. The content of an ad creative, and / or of a landing page may be selected and / or modified using location information. Finally, tools, such as user interfaces, may be provided to allow a business to enter and / or modify location information, such as location information used for targeting and location-dependent price information. The location information used to target and / or score ads may be, include, or define an area. The area may be defined by at least one geographic reference point (e.g., defined by latitude and longitude coordinates) and perhaps additional information. Thus, the area may be a circle defined by a geographic reference point and a radius, an ellipse defined by two geographic reference points and a distance sum, or a polygon defined by three or more geographic reference points, for example.
Owner:GOOGLE LLC

Apparatus and method for determining orientation parameters of an elongate object

An apparatus and method employing principles of stereo vision for determining one or more orientation parameters and especially the second and third Euler angles θ, ψ of an elongate object whose tip is contacting a surface at a contact point. The apparatus has a projector mounted on the elongate object for illuminating the surface with a probe radiation in a known pattern from a first point of view and a detector mounted on the elongate object for detecting a scattered portion of the probe radiation returning from the surface to the elongate object from a second point of view. The orientation parameters are determined from a difference between the projected and detected probe radiation such as the difference between the shape of the feature produced by the projected probe radiation and the shape of the feature detected by the detector. The pattern of probe radiation is chosen to provide information for determination of the one or more orientation parameters and can include asymmetric patterns such as lines, ellipses, rectangles, polygons or the symmetric cases including circles, squares and regular polygons. To produce the patterns the projector can use a scanning arrangement or a structured light optic such as a holographic, diffractive, refractive or reflective element and any combinations thereof. The apparatus is suitable for determining the orientation of a jotting implement such as a pen, pencil or stylus.
Owner:ELECTRONICS SCRIPTING PRODS

Interactive TV audience estimation and program rating in real-time using multi level tracking methods, systems and program products

An interactive TV content creation tool imports video and other assets, including WebPages, Java script, etc., as a series of resources for interactive TV content creation for real time audience estimation and program ratings. A processing system embeds hyperlinks into one or more objects contained in a program frame as desired. Each hotlink has attributes. These attributes include shape, name, description and Z-order. The hotlink can have one of several shapes, including rectangle, ellipse and parallelogram. The hotlink types are included in an object tree which is displayed in a window to a creator. A hotlink type is selected in the hotlink tree, and a window displays a linked properties tab available for the selected object. There are several link types available; linking to a URL, another interactive TV content file, a video clip, an audio clip, an image, or a tracking action and transaction action. There are different parameters for different actions. One parameter is a tracking script. Another parameter is a tracking flag. The tracking flag can be set to follow different tracking modes. If the "enable global tracking" is chosen, a name/value pair "global=true" will be appended to the tracking script transmitted to the global tracking server through network. If the "enable local tracking" is chosen, a name/value pair "local=true" will be appended to the tracking script. The embedded tracking information can follow three multi-level tracking patterns (MTP): regular program viewing tracking, enhanced program viewing tracking, and per object granularity tracking. The viewer returns the script to a server which calculates audience estimation and program ratings for the interactive TV program.
Owner:IBM CORP

Magnetic resonance whole body antenna system, elliptically polarized with major ellipse axis tilted/non-horizontal at least when unoccupied by an examination subject

A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).
Owner:SIEMENS HEALTHCARE GMBH

Method and apparatus for fast elliptic encryption with direct embedding

The present invention takes advantage of a quadratic-only ambiguity for x-coordinates in elliptic curve algebra as a means for encrypting plaintext directly onto elliptic curves. The encrypting of plaintext directly onto elliptic curves is referred to herein as "direct embedding". When performing direct embedding, actual plaintext is embedded as a "+" or "-" x-coordinate. The sender specifies using an extra bit whether + or - is used so that the receiver can decrypt appropriately. In operation their are two public initial x-coordinates such that two points P1+ and P1- lie respectively on two curves E+ and E-. A parcel of text xtext is selected that is no more than q bits in length. The curve (E+ or E-) that contains xtext is determined. A random number r is chosen and used to generate a coordinate xq using the public key of a receiving party. An elliptic add operation is used with the coordinate xq and the parcel of text to generated a message coordinate xm. A clue xc is generated using the random number and the point P from the appropriate curve E±. The sign that holds for xtext is determined and called g. The message coordinate xm, the clue xc, and the sign g are sent as a triple to the receiving party. The receiving party uses the clue xc and its private key to generate coordinate xq. Using the sign g and coordinate xq, the text can be recovered.
Owner:APPLE INC
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