Abstract: Graphical objects, such as documents and pop-up items, are projected onto a display surface of a touch-sensitive graphical user interface. The pop-up items associated with a particular document are displayed at a distance from the document. The distance is sufficient to prevent occlusion of the associated document when any of the pop-up items are touched. The pop-up items are connected visually with the particular document by transparent, that is, alpha-blended, colored triangles, so that the pop-up items appear to hover above the display surface.

Abstract: A graphic multi-user interface resolves multi-user conflicts. The interface includes a touch sensitive surface on which items, such as documents and images, can be displayed. The items have an associated state and policy. Touch samples are generated when users touch the touch sensitive surface. Each samples is identified with a particular user generating the of sample. The samples are associated with particular items. Touching items generates events. A decision with respect to a conflict affecting a next state of a particular item is made according to the events, the state and the policy.

Abstract: A multi-user collaborative circular graphical user interface for displaying items includes a transformation engine responsive to external command, such as mouse clicks, for generating polar coordinates for the items, an asynchronous rendering engine for generating images of the items according to the polar coordinates, and a thread switching engine for controlling the rendering engine.

Abstract: A system and method provides visualization and layout schemes for a circular graphical user interface using global and local polar coordinate systems to display images. The system gives a user of the interface the full capability to relocate, re-orient, scale and layout images in the circular interface. Further, methods are provided to layout images in the Cartesian coordinate system, minimizing overlapping and crowding of images, and supporting users' focus in a group setting for group collaboration around the interface.

Abstract: A slit camera system and method generates and displays an image of a moving object. First, a user defines one or more scan lines. Then, a sequence of frames of the moving object are acquired. From each frame, pixels corresponding to a current position of the scan line are selected. The selected pixels are stored in a static portion of an image buffer and remaining pixels of the frame are stored in a dynamic portion of the image buffer without overwriting any pixels of the static portion to display a distorted image of the moving object.

Abstract: A multi-user collaborative circular graphical user interface for displaying items includes a transformation engine responsive to external command, such as mouse clicks, for generating polar coordinates for the items, an asynchronous rendering engine for generating images of the items according to the polar coordinates, and a thread switching engine for controlling the rendering engine.

Abstract: A system and method provides visualization and layout schemes for a circular graphical user interface using global and local polar coordinate systems to display images. The system gives a user of the interface the full capability to relocate, re-orient, scale and layout images in the circular interface. Further, methods are provided to layout images in the Cartesian coordinate system, minimizing overlapping and crowding of images, and supporting users' focus in a group setting for group collaboration around the interface.