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.
Patent No.:
Date of Patent:
Sep. 18, 1979
Filed:
Feb. 13, 1978
Jerry L Ervin, Playa del Rey, CA (US);
Lexitron Corp., Chatsworth, CA (US);
Abstract
An electronic system for reducing a full page of text to fit onto the visual display screen of a partial page display word processing device for purposes of reviewing the format and page layout of the text. The text is not always legible in this condensed mode, which is switch selectable by the operator, but while in this mode the text may be edited and manipulated in the normal manner provided by the controls of the word processing device. The system utilizes both electronic digital logic and analog circuits to condense the size of an entire page of text by approximately a factor of three. The digital logic selects and displays only five of the normal fourteen horizontal lines of dots comprising each row of characters within the page of text to be reduced, thus condensing the characters vertically. The analog circuit causes less current to flow through the horizontal winding of the deflection yoke of the cathode ray tube which constitutes the visual display screen without otherwise affecting the display circuit. This causes less deflection of the beam, thus condensing the page of text horizontally.