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. 25, 2000
Filed:
Oct. 28, 1997
Applicant:
Inventors:
Assignee:
U. S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ;
U.S. Cl.
CPC ...
4551611 ; 4551611 ; 4551613 ; 4551861 ; 4551865 ;
Abstract
An RDS or RDBS radio broadcast receiver, utilizing a microcontroller and a serial communication bus, receives a list of alternative frequencies to allow the receiver to switch to an alternative frequency when the quality of the main radio broadcast signal deteriorates. Therefore the quality of the alternative frequency transmissions has to be updated from time to time. To avoid time delays caused by the relatively slow serial communication bus, the tuning section includes further controller for performing the alternative frequency updates.