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. 09, 1999
Filed:
Jun. 27, 1997
Sang-wook Kim, Suwon, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A video signal copying apparatus for copying a signal recorded on a recording medium onto other recording media is provided. The video signal copying apparatus includes a first filter for blocking a color signal and passing a luminance signal of a video signal detected from a video signal recording medium, a second filter for passing only the color signal of the video signal, a burst detection signal generator for generating a burst detection signal for detecting a burst signal, a color signal determiner for generating a color killer signal when a color signal does not exist in the video signal, a peak level detector for detecting the peak level of the input signal over all frequency bands when the color killer signal is generated, or over only a burst detection signal section when the color killer signal is not generated, by receiving the filtered color signal, a voltage-controlled amplifier for automatically controlling the gain of the color signal in correspondence to the detected peak level, and a mixer for mixing the filtered luminance signal and the gain-controlled color signal to output a video signal to be recorded via a recording amplifier. Therefore, loss of a luminance signal which is part of a low-frequency component can be prevented when copying a black and white signal, thereby improving picture quality.