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:
Aug. 20, 1996
Filed:
Jan. 10, 1995
Hee B Park, Kyungki-do, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A demodulating system for a high definition television (HDTV) that includes a tuning circuit for selecting one out of a plurality of received radio frequency (RF) signals and for converting the selected signal into an intermediate frequency (IF) signal according to an input loop-controlling signal. An oscillating circuit generates a sine wave signal. A filtering circuit passes only a pilot signal containing HDTV carrier information from the IF signal and cancels the remainder. A FPLL circuit for using a predetermined algorithm to form a loop-controlling signal for synchronizing the frequency and phase of the pilot signal and the frequency and phase of the sine wave and providing the loop-controlling signal to the tuning circuit.