Patent ID: 7920207

Claim:
Video apparatus comprising: an MPEG encoder receiving a first analogue video signal with ancillary information in a given time window and generating, exclusively from said first analogue video signal, on an output a digital video stream based at least partly on said first analogue video signal; an MPEG decoder at least connectable to the output and generating a second analogue video signal exclusively from said digital video stream at least when being connected to said output; control means for determining the occurrence of said time window and correspondingly generating a control signal; selecting means for selectively outputting, based on said control signal, the first analogue video signal, when said time window occurs, and otherwise, the second analogue video signal, wherein the MPEG decoder includes means for synchronising the second analogue video signal to the first analogue video signal; wherein the control means uses a first signal which is high only during periodical predetermined time intervals corresponding to said time window, wherein the control signal is generated by a combination of the first signal and of a second periodical signal corresponding to active parts of the first analogue video signal, and wherein the first analogue video signal is a CVBS signal, wherein said first signal is high during predetermined lines of the first analogue video signal and wherein said second periodical signal is high during a determined part of each line.