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. 25, 2008
Filed:
Mar. 02, 2004
Phillip M. Sher, Derry, NH (US);
Sriram Krishnan, Kerala State, IN;
Colm J. Prendergast, Cambridge, MA (US);
Edmund J. Balboni, Littleton, MA (US);
Daniel E. Fague, Andover, MA (US);
Jeffrey R. Feigin, Boxborough, MA (US);
Thomas J. Liptay, Cambridge, MA (US);
Phillip M. Sher, Derry, NH (US);
Sriram Krishnan, Kerala State, IN;
Colm J. Prendergast, Cambridge, MA (US);
Edmund J. Balboni, Littleton, MA (US);
Daniel E. Fague, Andover, MA (US);
Jeffrey R. Feigin, Boxborough, MA (US);
Thomas J. Liptay, Cambridge, MA (US);
MediaTek, Inc., Hsin-Chu, TW;
Abstract
An RF receiver includes an analog GO circuit that recognizes the presence of a data packet within a received RF signal in the receiver's analog gain control section, and in response produces an analog GO signal, and a digital GO circuit that recognizes the presence of a data packet from the receiver's digital demodulator section, and in response produces a digital GO signal. Gain control functions within the analog gain control section, and digital demodulator functions within the digital demodulator section, are enabled in response to respective analog and digital GO signals. The system is capable of distinguishing a valid data packet from noise, co-channel interference and adjacent panel interference. A symbol timing recovery circuit within the receiver identifies periodic samples of a data packet preamble that most closely match the preamble bits, with the receiver employing a continuation of the identified periodic samples to decode the remainder of the data packet.