Patent ID: 6246443
Filing Date: 2001-06-12
Classification: H04N

Abstract:
A signal processing device comprising:a signal source selection device, which selects a signal source from a set of at least two signal sources, a signal from each of the signal sources having at least one controllable parameter, whose value W is defined by a global value G and a local value L, associated with a selected signal source;a control for adjusting the value W;a storage register for the storage of the global value G;for each signal source, a storage register for the storage of the local value L; anda device which obtains the resultant value W by means of a predetermined combination of G and L, further comprising:(a) detector which determines whether a change .delta.W of W occurs, induced by a change of the setting of the control, within a predetermined time interval .DELTA.T after selection of a signal source, and(b) an adaptor adapted to change L by an amount .delta.L and G by an amount .delta.G if .delta.W occurs within .DELTA.T.