Abstract: An apparatus includes input channels, output channels, a control channel, and switching circuitry. The input channels receive position signals from multiple medical instruments located in an organ of a patient. The output channels forward one or more of the position signals to a position tracking system. The control channel receives control signals from the position tracking system. The switching circuitry forwards at least some of the position signals to the output channels in accordance with a first switching scheme, receives from the position tracking system, over the control channel, in response to the forwarded position signals, a control signal indicative of a given medical instrument that was identified as being located within a working volume of the position tracking system, and switches to a second switching scheme, in which all the position signals of the given medical instrument are forwarded to at least some of the output channels.

Abstract: An apparatus includes input channels, output channels, a control channel, and switching circuitry. The input channels receive position signals from multiple medical instruments located in an organ of a patient. The output channels forward one or more of the position signals to a position tracking system. The control channel receives control signals from the position tracking system. The switching circuitry forwards at least some of the position signals to the output channels in accordance with a first switching scheme, receives from the position tracking system, over the control channel, in response to the forwarded position signals, a control signal indicative of a given medical instrument that was identified as being located within a working volume of the position tracking system, and switches to a second switching scheme, in which all the position signals of the given medical instrument are forwarded to at least some of the output channels.