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. 16, 2005
Filed:
Jul. 10, 2001
Masayuki Tomita, Saitama, JP;
Masayuki Tomita, Saitama, JP;
Advantest Corporation, Tokyo, JP;
Abstract
It is an object to provide an apparatus in which measurement of a bit error rate of a transmission network that is used for digital broadcasting is capable of being executed during the time that actual broadcasting of the digital broadcasting is performed, namely the measurement is executed during the time that the transmission network is used. A bit error measurement apparatus is provided with a NULL packet extraction circuitfor extracting a NULL packet whose whole data of a payload should be 0 from packets transmitted through transmission net work, a data comparison sectionfor comparing the data of the payload of the NULL packet to comparison data 0 that should be a value of the data of the payload of the NULL packet, and an error counterfor counting error while judging the data as error when result of comparison is disagreement. The bit error measurement apparatus is capable of measuring the bit error while extracting the NULL packet during the time that the packet is transmitted through the transmission network, therefore, it is possible to measure the bit error during the time that the transmission network is used.