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:
Jun. 14, 2005
Filed:
Mar. 12, 2002
Masaki Matsui, Tokyo, JP;
Shigeo Sato, Tokyo, JP;
Toshiaki Fujikura, Tokyo, JP;
Akio Horibe, Tokyo, JP;
Muneki Ito, Tokyo, JP;
Masaki Matsui, Tokyo, JP;
Shigeo Sato, Tokyo, JP;
Toshiaki Fujikura, Tokyo, JP;
Akio Horibe, Tokyo, JP;
Muneki Ito, Tokyo, JP;
Uniden Corporation, Tokyo, JP;
Abstract
The present invention provides a diversity receiving device with superior interference resistance in a simple construction, comprising a plurality of antennas (); an antenna switching device () that selects any one of a plurality of antennas () and carries out connection switching thereof; a demodulator () that demodulates a wireless signal and obtains a baseband spread spectrum signal; an A/D converter () that A/D converts the baseband spread spectrum signal and generates chip data; a digital matched filter () that finds the correlation value of the chip data and the spreading code; a maximum correlation value detection portion () that detects the maximum correlation value; an average value calculation portion () that finds the average value per frame of the maximum correlation value; and a level comparison device () that compares the above-mentioned average value and a predetermined threshold value, and outputs a control signal to the antenna switching device () to control antenna switching in the antenna switching device ().