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:
Oct. 18, 1983
Filed:
Jan. 18, 1982
Heinz Hess, Wetterstadt, DE;
Reinhard Kirschenstein, Rossdorf, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To obtain an aperture correction signal with improved signal-to-noise ratio and having steep flanks with low harmonic content, the video signal is twice differentiated to obtain the second differential (C), and is also once differentiated to obtain the first differential (B), which is squared, the squared first differential and the second differential being multiplied and the product, after phase-matching by inversion, is applied as a correction signal (F), additively, in an adder (11) to the video signal (A) to form an aperture corrected output signal (G). Prior to the addition step, the video signal is time delayed to compensate for delays in the signal processing stages (4, 6, 7, 8) of the system (2).