Microsoft Technology Licensing, LLC

Michael D Edwards

Jon Blossom

Terence R Spies

Chris E Tobey

Michael B Robin

Yung-Ho Shih

Wesley O Rupel

Robert B Seidensticker, Jr

James C Bovee, Jr

Mark R McCulley

A data processing apparatus includes a graphics display device for displaying a display frame comprising a plurality of display frame pixels. A sprite management system composes the display frame from a plurality of graphic sprites. Each graphic sprite comprises a plurality of sprite pixels and corresponding sprite pixel values. Each sprite has a specified depth relative to the other sprites. One of the sprites is designated to be a video sprite. This sprite is loaded with a chroma-key value. The sprite management system includes a data processing device connected to access a display frame composition buffer. The data processing device is programmed to write pixel values of individual sprites to the display frame composition buffer. This writing begins with the pixel values of the sprite having the greatest depth and proceeds with the pixel values of the remaining sprites in order of decreasing sprite depth. The display frame data is then passed to a video overlay board which overlays a video image over those pixels containing the chroma-key value. The result is a display frame in which the plurality of graphic sprites, including the video sprite, appear layered with respect to each other in accordance with their respectively specified depths.

System and method for composing a display frame of multiple layered

An apparatus and method for navigating through an application program on a computer coupled to a computer-controlled display screen. The user can control the cursor position on the computer-controlled display using simple controls. The invention may use a hand-held controller with a four direction control button and a function select button. The computer accepts the direction input information and moves the cursor or focus according to one of three different navigation functions. The first two navigation functions are selected by the application program, and may change from one navigation to another in different portions of the program or under user control. With the first navigation function, the direction buttons on the controller shift the focus from one hot spot to another hot spot in the selected direction using predefined criteria. With the second navigation function, the focus is shifted from a present position on the computer-controlled display to the adjacent position in the selected direction. If the function select button is depressed while the focus is on a hot spot, the function associated with that particular hot spot are enabled. A third navigation function is enabled if the function select button and the directional control button are both depressed. With the third navigational function, the focus moves from the current position in any direction selected by the directional control button. The focus movement may simultaneously occur in two dimensions using any of the navigational functions if the user selects directions in two dimensions on the four directional control button.

Apparatus and method for controlling cursor movement

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Redmond, WA, United States of America

Michael D Edwards