METHOD AND SYSTEM FOR MEASURING THE QUALITY OF DIGITAL TELEVISION SIGNALS
摘要
The invention concerns a method and a system for measuring the quality of digital television signals comprising a data stream, said method including carrying out quality measurements and producing measurement signals representing quality. It comprises the following steps: (a) selecting in the data stream a reference temporal signal (PCR); (b) generating on the basis of the reference temporal signal a multibit clock signal (STC') whereof the phase is automatically controlled from the temporal reference signal (PCR) and the count is unequivocally deducted from that of an initial time base (STC); (c) labelling said measurement signals using at least certain digital clock signal bits (HDT), constituting data bits for the measurements carried out.
申请公布号
WO9931891(A1)
申请公布日期
1999.06.24
申请号
WO1998FR02717
申请日期
1998.12.14
申请人
TELEDIFFUSION DE FRANCE;GOUDEZEUNE, GABRIEL;BAINA, JAMAL;HOCQUARD, PHILIPPE;MASSE, DENIS