Patent ID: 8072361

Claim:
An apparatus, comprising: a first input; a second input; a time-to-digital converter, said time-to-digital converter comprising a first time-to-digital converter input, a second time-to-digital converter input, a first oscillator, and a second oscillator; a first multiplexer, a first input of said first multiplexer being coupled with said first input, a second input of said first multiplexer being coupled with an output of said first oscillator, and an output of said first multiplexer being coupled with said first time-to-digital converter input; and a second multiplexer, a first input of said second multiplexer being coupled with said second input, a second input of said second multiplexer being coupled with an output of said second oscillator, and an output of said second multiplexer being coupled with said second time-to-digital converter input.