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:
Jul. 04, 1995
Filed:
Oct. 12, 1993
Gerd Reime, Schomberg, DE;
Nokia Unterhaltungselektronik GmbH, Pforzheim, DE;
Abstract
A brightness signal distortion correction circuit (8, 11, 21) is provided for a video recorder, having distortion correction circuit (11), responsive to frequency-modulated brightness signals, and further responsive to feedback disturbance recognition control signals (U, J), for providing distortion corrected brightness signals; and also having disturbance recognition circuit (21), responsive to the distortion corrected brightness signals, for providing the feedback disturbance recognition control signals (U, J). In one embodiment, the distortion correction circuit (11) includes an adjustable transmission circuit (8) being arranged between the distortion correction circuit (11) and the disturbance recognition circuit (21), and having a voltage divider circuit (50, 51) including a resistor (51) and first and second diode circuit (50), responsive to the disturbance recognition control signals (J). In another embodiment the distortion correction circuit (11) includes adjustable threshold switching circuit (16), which is responsive to the feedback disturbance recognition control signal (I).