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:
Jan. 06, 1987
Filed:
Nov. 27, 1984
Michael Hausdorfer, Muhtal, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To improve TV image reproduction, and to suppress interference in the luminance channel of a color TV decoder, a controlled portion of the amplitude of a part of a TV signal, which part is within the frequency range of the chroma subcarrier, is subtracted from the TV signal. The portion of the luminance signal which is within the frequency range of the chroma subcarrier is rectified to derive a control signal and the amplitude of the controlled portion which is subtracted is controlled as a function of the controlled signal. Non-linearities of reproduction by the TV tube and of human perception can be compensated within the circuit which includes, for example, a matrix, and a non-linear signal transfer channel, or derived from the TV tube itself.