Michael K Gibson

US Patent:

57348588, Mar 31, 1998

Filed:

Oct 24, 1994

Appl. No.:

8/327971

Inventors:

Stuart R. Patrick - Issaquah WA
Richard A. Pletcher - Redmond WA
Michael S. Gibson - Redmond WA
Amit Chatterjee - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 926
G06F 1202
G06F 1204
G06F 1210

US Classification:

395412

Abstract:

A method and apparatus for providing access to a banked peripheral memory via a contiguous linear address space. The present invention provides a linear address space having a present region that is mapped to a host memory region of a computer system. The present invention further provides a relocatable selector that provides access to a portion of the linear address space. Accessing programs exchange data with the banked peripheral memory via the relocatable linear address space. When an accessing program references an address of the relocatable address base that is not mapped to the present region, the relocatable linear address space is positioned so that the referenced address maps to the present region. Additionally, a bank of the peripheral memory that corresponds to the referenced address is also mapped into the host memory region so as to enable the accessing program to exchange data with the banked peripheral memory via the relocatable linear address space.

US Patent:

58283617, Oct 27, 1998

Filed:

Jun 12, 1996

Appl. No.:

8/662843

Inventors:

Michael Scott Gibson - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G09G 502

US Classification:

345150

Abstract:

A method and system for rapidly transmitting multicolor or gray scale display data having multiple bits per pixel to a display device is provided. In a preferred embodiment, the method and system constitutes a software facility. The facility first encodes the image into multiple bit per pixel raster data. The multiple bit per pixel raster data has a number of pixels. Each pixel stores a color value corresponding to the color of a particular region within the image. The facility then associates one or more single bit per pixel raster planes with the multiple bit per pixel raster data. Each single bit per pixel raster plane corresponds to a color value that appears in the multiple bit per pixel raster data. Each pixel of each single bit per pixel raster plane corresponds to a pixel of the multiple bit per pixel raster data, and indicates whether the corresponding pixel in the multiple bit per pixel raster data contains the color value of the single bit per pixel raster plane. The facility then transmits the associated single bit per pixel raster planes to the display device.

US Patent:

57710341, Jun 23, 1998

Filed:

May 5, 1997

Appl. No.:

8/851410

Inventors:

Michael Scott Gibson - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G09G 522

US Classification:

345141

Abstract:

An improved font format for displaying text-based characters on pixel-oriented display devices. The improved font format includes a simplified header that includes font information and a plurality of flags indicating one of a plurality of predetermined formats for the plurality of glyph bitmaps. The header also includes a flag indicating whether the font was derived from a bitmapped font and a flag indicating whether the font is stored as a small format (i. e. , less than 64k) or a large format (i. e. , greater than 64k). A movable glyph offset table and a movable advance width table are also provided. To facilitate antialiased textout, additional background mode values are provided to allow for a blending of the glyphs into the background.

US Patent:

55658865, Oct 15, 1996

Filed:

Nov 1, 1993

Appl. No.:

8/146413

Inventors:

Michael S. Gibson - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G09G 536

US Classification:

345136

Abstract:

A method and system for rapidly transmitting multicolor or gray scale display data having multiple bits per pixel to a display device is provided. In a preferred embodiment, the method and system constitutes a software facility. The facility first encodes the image into multiple bit per pixel raster data. The multiple bit per pixel raster data has a number of pixels. Each pixel stores a color value corresponding to the color of a particular region within the image. The facility then associates one or more single bit per pixel raster planes with the multiple bit per pixel raster data. Each single bit per pixel raster plane corresponds to a color value that appears in the multiple bit per pixel raster data. Each pixel of each single bit per pixel raster plane corresponds to a pixel of the multiple bit per pixel raster data, and indicates whether the corresponding pixel in the multiple bit per pixel raster data contains the color value of the single bit per pixel raster plane. The facility then transmits the associated single bit per pixel raster planes to the display device.