Method and apparatus for computer display memory management

Patent 5929868 Issued on July 27, 1999. Estimated Expiration Date:

September 27, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Multi-screen display control system and its method
Patent #: 4914607
Issued on: 04/03/1990
Inventor: Takanashi, et al.

Display system with symbol font memory
Patent #: 4918429
Issued on: 04/17/1990
Inventor: Clarke

Row interleaved frame buffer
Patent #: 5357606
Issued on: 10/18/1994
Inventor: Adams

Method and apparatus for separate window clipping and display mode planes in a graphics frame buffer
Patent #: 5448264
Issued on: 09/05/1995
Inventor: Pinedo, et al.

Method and apparatus for increasing the speed of operation of a double buffered display system
Patent #: 5587726
Issued on: 12/24/1996
Inventor: Moffat

Interleaving pixel data for a memory display interface
Patent #: 5608427
Issued on: 03/04/1997
Inventor: Hoffert, et al.

Method and apparatus for interleaving display buffers Patent #: 5625386
Issued on: 04/29/1997
Inventor: Howard, et al.

Inventors

Assignee

Apple Computer, Inc.

Application

No. 722543 filed on 09/27/1996

US Classes:

345/545, Frame buffer345/531Graphic display memory controller

Examiners

Primary: Lao, Lun-Yi

Attorney, Agent or Firm

Liu; Richard C.

International Class

G09G 005/00

Abstract

A method and an apparatus for interleaving display frame buffers is disclosed. The system includes a processor providing CPU addresses for peripheral (access, a display system, a single memory system for storing multiple frame buffers, data buses for transferring image information and a video controller for processing the image information received and for converting CPU addresses into memory addresses for accessing the memory system. The multiple frame buffers stored in the memory system in accordance with the present invention provide either overlay images for a display or separate images for separate displays or both.