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. 17, 2000
Filed:
Nov. 04, 1991
Christopher H Strolle, Glenside, PA (US);
Chandrakant B Patel, Hopewell, NJ (US);
Werner F Wedam, Lawrenceville, NJ (US);
Jung Wan Ko, Suweon, KR;
Raymond Schnitzler, Piscataway, NJ (US);
Jong Kyung Yun, Suweon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An encoder separates luminance and chrominance signal components of a composite video signal. The frame-to-frame changes in the luminance signal are detected, and a motion signal is derived therefrom. The higher frequency portion of the luminance signal is adaptively de-emphasized in amplitude and folded into the spectrum of the lower frequency portion of the luminance signal, to generate a folded-spectrum luminance signal for modulating the frequency of a luma carrier. In a combined signal, suitable for magnetic recording in accordance with a modified VHS standard, the chrominance signal is translated in frequency to generate a color-under signal in a frequency band below that occupied by the FM luma carrier. The de-emphasized higher frequency portion of the luminance signal, as folded into its lower frequency portion, and encoding of the motion signal onto vacant portions of the frequency band below that occupied by the FM luma carrier in such a magnetic recording facilitate its being compatibly reproduced by conventional VHS reproduction devices. In a wideband reproduction device a decoder demodulates the folded-spectrum luminance signal from the FM luma carrier, unfolds the lumininance signal, and reemphasizes the high frequencies of the unfolded luminance signal. The color-under signal is translated in frequency to regenerate chrominance signal combined with the unfolded luminance signal with its high frequencies re-emphasized to their original amplitude, regenerating a composite signal descriptive of a full bandwidth image. The motion signal is utilized in the encoder for motion-adaptively pre-filtering the input luminance and is recovered in the decoder for motion-adaptively post-filtering the unfolded luminance.