Patent ID: 6366314
Filing Date: 2002-04-02
Classification: H04N

Abstract:
A method of measuring the quality of digital television signals comprising a data stream, said method including measuring quality and producing measurement signals representative of the quality of at least some of the data of the data stream, and said method comprising the following steps:a) selecting a reference time signal (PCR) from the data stream; b) generating a multibit digital clock signal (STCâ€²) on the basis of the reference time signal, with the phase of the clock signal being locked on the basis of said reference time signal (PCR), and with the count thereof being deduced unambiguously from the count of a time base (STC) generated during initial encoding of the digital television signals; and c) labelling said measurement signals using at least some of the bits (HDT) of the digital clock signal, that are meaningful given the nature of the measurements performed.