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. 08, 1997
Filed:
Sep. 06, 1996
Jian Yang, Bensalem, PA (US);
Allen LeRoy Limberg, Ringoes, NJ (US);
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
BPSK modulation of suppressed carrier in quadrature with a video carrier amplitude-modulated by composite video signal is used for transmitting a serial-bit digital signal, which is subjected both to 'pre-line-comb' and 'pre-frame-comb' partial-response filtering prior to conversion to BPSK modulating signal. The 'pre-frame-comb' partial-response filtering of the serial-bit data is done on a continuous basis, rather than transmitting frames of the BPSK twice, once in positive logic and once in negative logic, during successive pairs of consecutive frames of the NTSC television signal. This results in the full luminance bandwidth below chroma frequencies being available on average for the transmission of BPSK, rather than half that bandwidth.