The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 06, 1989

Filed:

Jul. 07, 1987
Applicant:
Inventor:

Brian D Tucker, Ilford, GB;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340722 ; 324112 ; 3241 / ; 364487 ;
Abstract

According to a method and apparatus for displaying data on a display screen, such as the screen of a digital storage oscilloscope, in a ROLL mode and prior to a trigger event, newly acquired data is continuously newly displayed at a given point on the screen as the oldest displayed data is rolled off the screen at a first side. This is continued even during a REFRESH mode until a trigger event occurs, at which time the displayed data is frozen on the screen and newly acquired data is written across the screen toward a second side of the screen, so that at the time the newly acquired data is written to the second end of the screen, data is observable which represents a certain period before the trigger event and after the trigger event.


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