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. 18, 2003
Filed:
Jun. 30, 2000
Sony International (Europe) GmbH, Berlin, DE;
Abstract
An alternative frequency of e. g. a digital shortwave signal like a DRM signal can easily and satisfactorily be checked whether or not the same service is transmitted before a fast seamless switching to this alternative frequency can be performed. The inventive method to perform such a checking is characterized by a respective correlation of at least two sets of samples taken from the signal transmitted on the alternative frequency having a predetermined time relationship (&Dgr;t ) and a comparison of said respective correlation results, i.e. comparison of the time (t ) of occurance of a correlation peak included in a first correlation result with the time (t ) of occurance of a correlation peak included in a respective further correlation result, to verify that both services are the same when the time relationship (|t |) between said correlation peaks is the same as said predetermined time relationship (&Dgr;t ) of the at least two sets of samples.