Patent ID: 6094491
Filing Date: 2000-07-25
Classification: H03K,H04H

Abstract:
A multi-channel signal mixing console comprising a plurality of groups of controls each including a motorized fader, such that each group of controls is assigned by an input means to particular signal channels, each motorized fader including a touch detection circuit, wherein each of said touch detection circuits is associated with a respective conductive area for detection of increased capacitance at the conductive area, wherein each of said touch detection circuits is operable during a predetermined active period, and wherein a timing circuit is provided for generating non-overlapping active periods for each of the touch detection circuits by applying an enable pulse from one of a plurality of pulse generators to one respective one of said plurality of touch detection circuits to define said predetermined active period, and to an input of a next one of said plurality of pulse generators to define a next active period to form a cascading touch detection circuit enabling scheme such that no more than one detection circuit is active at any time, thereby minimizing interaction between the detection circuits if more than one conductive area should be touched simultaneously, wherein upon detection of touch of a motorized fader, the other controls in the group associated with that fader are assigned to the channel represented by that fader.