1219 results about "Concentric ring" patented technology

An actuation mechanism for assisting the operation of the natural heart has a varying shape for deforming the heart. In one embodiment, a plurality of links articulates with respect to each other for varying the shape of the actuation mechanism. The plurality of links is configured for being positioned proximate to an outer surface of the heart for deforming the heart by varying the shape of the actuation mechanism. In another embodiment, a jacket for coupling with an outer surface of the heart has a tether coupled to successive sections of the jacket. The tether is operable to be translated with respect to the jacket sections to vary the shape of the jacket for deforming the heart. In another embodiment, a plurality of concentric ring structures are coupled together to move with respect to each other in a concentric fashion. A movement mechanism coupled to the rings is operable to vary their positions with respect to each other to vary the overall shape for deforming the heart.

A printed image is disclosed wherein the image may be in the form of an array of magnetically aligned platelets or flakes that may by uniform in shape and size and wherein the flakes are arranged in a particularly manner to form optically illusive images useful as security devices, or useful in beam steering applications. In one embodiment of this invention printed array is disclosed a plurality of concentric rings of magnetically aligned platelets disposed upon a substrate in the form of a Fresnel structure, preferably a Fresnel reflector. Advantageously, since the magnetic field can be controlled with respect to strength and direction, one can easily design a field that will correct for spherical aberration that would otherwise be present in a typical Fresnel reflector. In other embodiments of the invention optically illusive images of funnels, domes and cones are printed.

System, method, article for determining registration and / or skew errors in a print medium with respect to a printing element includes a print medium including a two-dimensional pattern including a grid within a geometric shape. The grid has a plurality of vertical and horizontal lines, the intersection of each forming a cross-hair defining an X-Y positional data point; the collection of data points defining a data set. The geometric shape is in the form of a two-dimensional target having a plurality of concentric rings; an innermost one enclosing at least one of the X-Y positional data points in the data set. The printing element provides a marker onto the print medium. The positional location of the marker with respect to the one of the at least one enclosed X-Y positional data point defines a directional displacement vector for correcting registration and / or skew error between the print medium and the printing element.

Disclosed are devices and methods for detecting, preventing, and / or treating neurological disorders. These devices and methods utilize electrical stimulation, and comprise a unique concentric ring electrode component. The disclosed methods involve the positioning of multiple electrodes on the scalp of a mammal; monitoring the mammal's brain electrical patterns to identify the onset of a neurological event; identifying the location of the brain electrical patterns indicative of neurological event; and applying transcutaneous or transcranial electrical stimulation to the location of the neurological event to beneficially modify brain electrical patterns. The disclosed methods may be useful in the detection, prevention, and / or treatment of a variety of indications, such as epilepsy, Parkinson's Disease, Huntington's disease, Alzheimer's disease, depression, bipolar disorder, phobia, schizophrenia, multiple personality disorder, migraine or headache, concussion, attention deficit hyperactivity disorder, eating disorder, substance abuse, and anxiety. The disclosed methods may also be used in combination with other peripheral stimulation techniques.

A system 10 for controlling the automatic scrolling of information on a computer display or screen 12 is disclosed. The system 10 generally includes a computer display or screen 12, a computer system 14, gimbaled sensor system 16 for following and tracking the position and movement of the user's head 18 and user's eye 20, and a scroll activating interface algorithm using a neural network to find screen gaze coordinates implemented by the computer system 14 so that corresponding scrolling function is performed based upon the screen gaze coordinates of the user's eye 20 relative to a certain activation area(s) on the display or screen 12. The gimbaled sensor system 16 contains a gimbaled platform 24 mounted at the top of the display or screen 12. The gimbaled sensor system 16 tracks the user's 22 head 18 and eye 20, allows the user to be free from any attachments while the gimbaled sensor system 16 is eye tracking, and still allows the user to freely move his or her head when the system 10 is in use. A method of controlling automatic scrolling of information on a display or screen 12 by a user 22 is also disclosed. The method generally includes the steps of finding a screen gaze coordinate 146 on the display or screen 12 of the user 22, determining whether the screen gaze coordinate 146 is within at least one activated control region, and activating scrolling to provide a desired display of information when the gaze direction is within at least one activated control region. In one embodiment, the control regions are defined as upper control region 208, lower region 210, right region 212, and left region 214 for controlling the scrolling respectively in the downward, upward, leftward, and rightward directions. In another embodiment, the control regions are defined by concentric rings 306, 308, and 310 for maintaining the stationary position of the information or controlling the scrolling of the information towards the center of the display or screen 12.

A graphical hierarchical data wheel for displaying hierarchical nodes includes a top level circle on a central axis of the wheel representing a top level node. The wheel further includes a first concentric ring adjacent to the top level circle and comprising a plurality of first level segments, each representing a first level node. The size of each first level segment is proportional to a weight of the corresponding first level node. The wheel further includes a second concentric ring having a larger radius than the first concentric ring and adjacent to the first concentric ring, and comprising a plurality of second level segments, each representing a second level node. The size of each of the second level segments is proportional to the weight of the corresponding second level node. The wheel may include additional concentric rings as needed, and depending on the resolution and size of the display.