System and method of supporting a plurality of color maps in a display for a digital data processing system

Patent 5142615 Issued on August 25, 1992. Estimated Expiration Date:

August 25, 2009. 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

System for electronically displaying portions of several different images on a CRT screen through respective prioritized viewports
Patent #: 4542376
Issued on: 09/17/1985
Inventor: Bass , et al.

Dynamic generation and overlaying of graphic windows for multiple active program storage areas
Patent #: 4555775
Issued on: 11/26/1985
Inventor: Pike

Multiprocessor computer system for forming a color picture from object elements defined in a hierarchic data structure
Patent #: 4631690
Issued on: 12/23/1986
Inventor: Corthout , et al.

Presentation space management and viewporting on a multifunction virtual terminal
Patent #: 4642790
Issued on: 02/10/1987
Inventor: Minshull , et al.

Bitmapped graphics workstation
Patent #: 4700320
Issued on: 10/13/1987
Inventor: Kapur

Control device for writing for multi-window display
Patent #: 4769762
Issued on: 09/06/1988
Inventor: Tsujido

Attribute hierarchy system
Patent #: 4794389
Issued on: 12/27/1988
Inventor: Luck , et al.

Virtual memory image controller for multi-windowing
Patent #: 4815010
Issued on: 03/21/1989
Inventor: O'Donnell

Data flow machine Patent #: 4972315
Issued on: 11/20/1990
Inventor: Yamasaki, et al.

Inventors

Assignee

Digital Equipment Corporation

Application

No. 394498 filed on 08/15/1989

US Classes:

345/595, Expert system or AI345/589, Color or intensity715/853Hierarchy or network structure

Examiners

Primary: Harkcom, Gary V.
Assistant: Zimmerman, Mark

Attorney, Agent or Firm

Fish & richardson

International Class

G06F 015/62

Abstract

A display arrangement in a digital data processing system having an interface for controlling the display of hierarchically arranged display objects, each having associated display criteria, in response to a hierarchically-arranged layer control arrangement. The interface comprises a display criteria testing portion for determining the display criteria for each object, and a layer hierarchy control portion for controlling the creation of said layer control arrangement in response to the display criteria determined by the display criteria testing portion.