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:
Feb. 25, 2003
Filed:
Dec. 22, 1998
Chandrakant B. Patel, Hopewell, NJ (US);
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
Apparatus for reproducing data from a selected digital television signal, transmitted in packet form as quadrature-amplitude-modulation (QAM) of a carrier, has a tuner for selecting a digital television signal and converting it to a final intermediate-frequency signal, which is digitized by an analog-to-digital converter before synchrodyning to baseband in the digital regime. QAM synchrodyning circuitry responsive to the digitized final intermediate-frequency signal generates real and imaginary digital sample streams of QAM symbol code, by synchrodyning the final IF signal to baseband in the digital regime. Symbol decoding circuitry responsive to the real and imaginary digital sample streams of QAM symbol coding generates a digital data stream. Data synchronization recovery circuitry recovers data synchronizing information included in the digital data stream. A video decoder of decompression type, such as an MPEG-2 video decoder responsive to portions of the digital data stream, as selected in response to the data synchronizing information, generates digital signals descriptive of red, green and blue video signals.