Patent ID: 7515208

Claim:
A processing apparatus to direct operation of a set of digital-to-analog converters, comprising: a load detection module connected to said set of digital-to-analog converters said load detection module being configured to detect an output voltage of each of said set of digital-to-analog converters to determine whether said each of said set of digital-to-analog converters is connected to an output device via a coupling capacitor, said output voltage being detected subsequent to a start of transmission of a pulse of electrical energy by said each of said set of digital-to-analog converters and prior to said coupling capacitor being substantially charged up by said pulse of electrical energy; and a control module connected to said set of digital-to-analog converters and to said load detection module, said control module being configured to direct transmission of a signal to said output device via at least one of said set of digital-to-analog converters that is connected to said output device, said control module being configured to select a format of said signal based on how many of said set of digital-to-analog converters are connected to said output device.