§
Luxuse
Patent Intelligence
Sign In
Patent EP0256838A2 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0256838A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

System for improving two-color display operations

Assignee: Tektronix Inc
•
Filing: 1987-08-11
•
Granted: —
•
Expires: 2007-08-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A system is disclosed which reduces significantly the time for processing multi-bit two-color data for display. The system generates multi-bit two-color data by expanding single-bit monochromatic data, and provides three types of output data: a first expanded multi-bit color data, a second expanded multi-bit color data, and a third unchanged multi-bit data, the unchanged data being combinable with other data for producing data overlays. The system comprises a data expansion circuit for maintaining selected data unchanged and for expanding selected single-bit data to multi-bit two-color data, a memory for storing multi-bit data, and a data compression circuit for compressing selected multi-bit data to single-bit data.

Inventors

  • 👤 Merlin R. Miller

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 18:25
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/02; G09G5/026; G09G5/36; G09G5/39

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 109 words
System for processing data for display, comprising: memory means for storing multi-bit data represent­ing of pixels of an image; and means coupled to the memory means and coupled to receive applied data, the applied data identifying stored data that are to be changed and not changed and identifying data expansion and non-expansion modes of operation, for changing stored data identified to be changed by expanding a first selected bit of the applied data to a first multi-bit data value, and a second selected bit of the applied data to a second multi-bit data value during expansion mode, and for maintaining as unchanged stored data identified to be not changed.
Claim 2
Dependent Claim 109 words
System for processing data for display, comprising: memory means for storing multi-bit data represent­ing of pixels of an image; and means coupled to the memory means and coupled to receive applied data, the applied data identifying stored data that are to be changed and not changed and identifying data expansion and non-expansion modes of operation, for changing stored data identified to be changed by expanding a first selected bit of the applied data to a first multi-bit data value, and a second selected bit of the applied data to a second multi-bit data value during expansion mode, and for maintaining as unchanged stored data identified to be not changed.
Claim 3
Dependent Claim 92 words
Method of processing pixel data values for display, comprising the steps of: specifying at least first and second data values to which pixel values may be changed; identifying at least one of first and second pixels whose values are to be changed, and third pixels whose values are not to be changed; changing the values of the first pixels to the first data, value, and the values of the second pixels to the second data value; and restoring the values of the third pixels such that the third pixel values remain unchanged.
Claim 4
Dependent Claim 92 words
Method of processing pixel data values for display, comprising the steps of: specifying at least first and second data values to which pixel values may be changed; identifying at least one of first and second pixels whose values are to be changed, and third pixels whose values are not to be changed; changing the values of the first pixels to the first data, value, and the values of the second pixels to the second data value; and restoring the values of the third pixels such that the third pixel values remain unchanged.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag