Videotex frame processing

Patent 4751669 Issued on June 14, 1988. Estimated Expiration Date:

June 14, 2005. 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

Pictorial information retrieval system
Patent #: 4028733
Issued on: 06/07/1977
Inventor: Ulicki

System for digital transmission and text display
Patent #: 4290062
Issued on: 09/15/1981
Inventor: Marti , et al.

Pictorial information processing technique
Patent #: 4454593
Issued on: 06/12/1984
Inventor: Fleming , et al.

Cursor controlled page selection in a video display Patent #: 4587520
Issued on: 05/06/1986
Inventor: Astle

Inventors

Assignee

Wang Laboratories, Inc.

Application

No. 06/719777 filed on 04/04/1985

US Classes:

345/635, Non-overlapping705/400FOR COST/PRICE

Examiners

Primary: Zache, Raulfe B.

Attorney, Agent or Firm

International Class

H04M 11/08 (20060101)

Abstract

A videotex decoder apparatus which, in various aspects, displays a status line to indicate when connect charges are occurring; overlays menus over displayed videotex frames with portions of the displayed frames remaining visible; provides easily called log-on procedures; retrieves remote information frames by user-specified keywords names; prints information frames in selectable different overall sizes; provides selectable different character sets for display; is table-driven; is structured to include a device independent decoder and device dependent drivers; includes a controller which feeds bytes to the decoder for decoding without regard to the protocol-dependent information content of those bytes; and uses an added frame header on stored frames to indicate the videotex protocol for decoding the frames.