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:
Nov. 17, 1981
Filed:
Feb. 22, 1980
Applicant:
Inventors:
Kurt F Wallace, Redwood City, CA (US);
Greg G Frye, San Leandro, CA (US);
David A Grayson, Sunnyvale, CA (US);
Assignee:
Atari, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358166 ; 358242 ;
Abstract
The resolution of relatively low resolution type information signals is enhanced by inserting black level signals between adjacent picture elements at predetermined positions in each odd horizontal scanning line, and inserting black level signals between adjacent picture elements at different predetermined positions in even horizontal scanning lines. The black level signals are inserted by extinguishing a CRT beam in accordance with phase displaced clock signal trains, preferably phase displaced by 180.degree..