285 results about "Sweet spot" patented technology

A “Constrained Predictive Interface” uses predictive constraints to improve accuracy in user interfaces such as soft keyboards, pen interfaces, multi-touch interfaces, 3D gesture interfaces, EMG based interfaces, etc. In various embodiments, the Constrained Predictive Interface allows users to take any desired action at any time by taking into account a likelihood of possible user actions in different contexts to determine intended user actions. For example, to enable a virtual keyboard interface, various embodiments of the Constrained Predictive Interface provide key “sweet spots” as predictive constraints that allow the user to select particular keys regardless of any probability associated with the selected or neighboring keys. In further embodiments, the Constrained Predictive Interface provides hit target resizing via various piecewise constant touch models in combination with various predictive constraints. In general, hit target resizing provides dynamic real-time virtual resizing of one or more particular keys based on various probabilistic criteria.

An autostereoscopic multi-user display comprising a sweet-spot unit which is directionally controlled by a tracking and image control device (160), wherein an illumination matrix (120) is provided with separately activatable illuminating elements (11 . . . 56), in addition to an imaging device used to alternatingly image active illuminating elements, for making expanded sweet spots (SRI/SR2) visible to various eye positions (EL1/ERI, EL2/ER2) of viewers observing alternating images or a stereoscopic image sequence on a transmissive image matrix (140) with the aid of directed beams (B1R . . . B5L). According to the invention, the imaging device comprises an imaging matrix (110) provided with a plurality of lens elements (111 115) whose focal length is small in order to image the active illuminating elements in an enlarged manner onto the sweet spots (SRI/SR2), and a field lens (171), which follows the imaging matrix (110), in order to keep the distances of the activated illuminating elements between adjacent beams (B1, B2,B4, B5) as constant as possible and in order to assist selection of the directions (D1. . . D5) with the illumination matrix (120) for the beams.

An apparatus and method of reproducing a 2-channel virtual sound while dynamically controlling a sweet spot and crosstalk cancellation are disclosed. The method includes: receiving broadband signals, setting compensation filter coefficients according to response characteristics of bands and setting stereophonic transfer functions according to spectrum analysis; down mixing an input multi-channel signal into two channel signals by adding head related transfer functions (HRTFs) measured in a near-field and a far-field to the input multi-channel signal, canceling crosstalk of the down mixed signals on the basis of compensation filter coefficients calculated using the set stereophonic transfer functions, and compensating levels and phases of the crosstalk cancelled signals on the basis of the set compensation filter coefficients for each of the bands.

The invention provides a wood type golf club head, wherein in a measuring state where a center line of a shaft axis arranged within a vertical plane and is inclined at a set lie angle, and a face angle is set to zero, a distance (d) of center of gravity corresponding to a shortest distance between the center line of the shaft axis and a center of gravity (G) of the head is between 45 and 50 (mm), and a point (T) on which a horizontal tangential line passing through an area center of gravity (FC) of the face surface and being in contact with the face surface intersects a perpendicular line dropped to the tangential line from a sweet spot (SS) is arranged on the tangential line within 2 (mm) from the area center of gravity FC close to a toe, and within 4 (mm) close to a heel.

A golf club comprises a club shaft and a hollow club head, wherein the club head has a loft angle of from 14 to 18 degrees, a head volume of not less than 250 cc, and a sweet spot at a vertical distance of from 1 to 5 mm downwards of a face center, and the club shaft has a variable flexural rigidity whose minimum is in a range of from 5 to 10 N·m², and the minimum flexural rigidity occurs in a range between 0% and 40% of the length of the club shaft from the end of the club shaft.

A practice putter head includes a substantially flat centrally located sweet spot, and a pair of surfaces that will deflect the golf ball when various flaws occur in a putter's stroke. In one embodiment, the putter head has a putting surface that includes a centrally located sweet spot, a proximal end, and an opposing distal end. A distal claw defines an inner distal claw surface that extends forward from the distal end of the putting surface and extends proximally, and a proximal claw defines an inner proximal claw surface that extends forward from the proximal end of the putting surface and extends distally. The putter head may also include a distal surface inclining from the distal edge of the sweet spot and a proximal surface inclining from the proximal edge of the sweet spot.

Provided is a method and composition for the in-situ generation of synthetic sweet spots in tight-gas formations. The composition can include nitrogen generating compounds, which upon activation, react to generate heat and nitrogen gas. The method of using the composition includes injecting the composition into a tight-gas formation such that upon activation, heat and nitrogen gas are generated. Upon the generation of nitrogen gas and heat within the formation, microfractures are produced within the formation and the hydrostatic pressure within the reservoir is reduced to less than the reservoir fluid pressure, such that the rate of production of hydrocarbons from the formation is increased.

A golf club head 1 comprising a hollow head body 1b and a gravity center adjuster 14 fixed to the head body 1b and comprising a first weight member 15 and a second weight member 16 having a lower specific gravity than the first weight member 15, wherein the first and second weight members are provided in the head body 1b so that the locations thereof are exchangeable with each other, and a depth GL of the center of gravity which is a distance from the head's center of gravity G to a sweet spot SS of a face 2 can be changed by location exchange between the first and second weight members 15 and 16 without substantially changing a distance GK of the center of gravity which is the shortest distance from an axial center line of a shaft-inserting hole 7a to the head's center of gravity G.

A tennis racquet that provides audio or visual feedback to a player. Sensors sense the impact of a ball on the racquet. A feedback indictor provides visual or audio feedback. A controller controls the indicator based on data provided by the sensors. In an entertainment mode, feedback is provided based on any ball impact. In a training mode, feedback is based on a ball impact within a sweet spot of the racquet. The sensors may collect performance data such as number of impacts, location of impacts, ball speed and racquet angle. A communication link may be provided to download the performance data to an external device.

The present invention discloses a method for evaluating shale gas reservoirs and searching sweet spot regions, which includes steps as follows: drilling corestone columns with different directions and measuring dynamic and static parameters of the corestone columns after saturation to obtain a transformable relational expression of dynamic and static elasticity modulus, processing physical simulation of anisotropic rocks, and calculating elastic parameters; intersecting to obtain related relationship corresponding to elastic and sensitive parameters or the combination of the elastic and sensitive parameters and parameters of shale gas sweet spot regions, getting and predicating the parameters or parameter combination of the shale gas sweet spot regions; correcting log data to obtain optimal well log; utilizing multi-mineral analysis and corestone test analysis methods to obtain a model and processing in series; inverting three-dimensional high resolution post-stack seismic data; synthesizing obtained various favorable parameters of the shale gas reservoirs and combining the accurate burial depth, thickness, occurrence and planar distribution of the shale gas reservoirs to obtain the gas bearing characteristic prospect of the shale gas reservoirs and outline the sweet spot regions for shale gas exploration and development.

A golf putter head of triangular shape. A ball-striking leading wall has a first breadth greater than a second breadth of a trailing wall. The leading and trailing walls are interconnected at their respective opposite ends by sidewalls that converge toward one another and define a cavity of trapezoidal shape. The center of gravity of the golf putter head is closer to the trailing wall than the leading wall to provide a moment of inertia that reduces the effects of missing a sweet spot on the leading wall during a putt. In one embodiment, the trailing wall is weighted to move the center of gravity closer to the trailing wall. In another embodiment, a web interconnects the leading and trailing walls along a longitudinal axis of the golf putter head. Another embodiment adds a pair of weights to the leading end of each sidewall, significantly increasing the moment of inertia.

A golf club head is provided having a body and a face insert, with a slot in a perimeter region of the body of the club head adjacent the face insert. The slot increases the flex of the hitting surface on impact with a golf ball, thereby increasing the speed with which the ball rebounds off the hitting face and increases the overall distance the ball is hit. The slot preferably moves the sweet spot of the hitting face a distance X from the face center of the hitting face. The slot may be filled with an elastomeric material.

A golf club head having a recess located in a top portion thereof is described and claimed. The recess is located between the heel and the toe and extends toward the sole. The recess may be in the top line of the club head. An insert may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. The insert may include one or more dampening materials. The recess removes material from the club head, which in turn may do one or more of the following: increase the overall size of the club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater club head moment of inertia. Thus, the recess and insert produce a more forgiving and playable golf club. As an alternative to a recess, a thin protrusion may be provided at the top line of the club head and the insert provided with a corresponding groove to facilitate attachment.