U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Process and apparatus for manipulating a boundless data stream in an object oriented programming system

Patent 5202981 Issued on April 13, 1993. Estimated Expiration Date: Icon_subject April 13, 2010. 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.

Patent References

Higher order language-directed computer
Patent #: 4791550
Issued on: 12/13/1988
Inventor: Stevenson ,   et al.

System for animating program operation and displaying time-based relationships
Patent #: 4821220
Issued on: 04/11/1989
Inventor: Duisberg

System for merging virtual partitions of a distributed database Patent #: 4853843
Issued on: 08/01/1989
Inventor: Ecklund

Inventor

Application

No. 425813 filed on 10/23/1989

US Classes:

707/1, DATABASE OR FILE ACCESSING707/200FILE OR DATABASE MAINTENANCE

Examiners

Primary: Kulik, Paul V.

Attorney, Agent or Firm

International Classes

G06F 015/40
G06F 015/403

Abstract

A process and apparatus for manipulating boundless data streams in an object oriented programming system provides a stream class of objects which includes as attributes an ordered list of object references to selected ones of the data objects stored in the data storage device. Methods for manipulating the object include move to first, move to last, move to next and move to previous which provide a bi-directional data stream. The data appears to the user as though it resides entirely in memory, even though it does not. The stream class implements a "sliding window" in an object oriented programming system which permits manipulation of any number of lists of virtually unlimited size when remaining within the physical limitations of finite storage.

Other References

  • Gray, S. N., "Notes on Database Operating Systems", In Operating Systems: An Advanced Course, ed. R. Bager et al., 1977, Chapter 3.f., 394-48
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