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:
Aug. 09, 2005
Filed:
Aug. 06, 2002
Paul Barrett, Ipswich, GB;
Paul Barrett, Ipswich, GB;
Psytechnics Limited, Ipswich, GB;
Abstract
This invention relates to the measurement of the accuracy of a communication channel. The invention provides a method and apparatus for determining channel degradation information for a communications channel, in which a known data sequence is generated within a transmitter; a coded data sequence based on the known data sequence is transmitted using the transmission channel; said known data sequence is generated within the receiver; and the known data sequence generated within the receiver is compared with a decoded data sequence based on data received via the channel to provide said channel degradation information; wherein a source encoder in the transmitter has the ability to generate a predetermined output data sequence in response to a predetermined input data sequence; the known data sequence is generated within the transmitter and within the receiver in dependence upon the predetermined output data sequence; and the decoded data sequence is measured prior to source decoding in the receiver.