Patent ID: 7124153
Filing Date: 2006-10-17
Classification: G06F,H03L

Abstract:
1. An apparatus for digital frequency conversion, the apparatus comprising: a digital phase detector unit configured to output a first frequency setting signal based on a multiplicity of input signals, the multiplicity of input signals including at least a first reference signal having a first frequency, a current phase feedback signal, and a target phase signal; a digital target phase accumulator unit coupled to the phase detector unit, wherein the target phase accumulator unit is configured to output the target phase signal based on a multiplicity of input signals including a second reference signal input, and a target phase input value; a digital frequency value generator unit coupled to the phase detector unit, wherein the digital frequency value is configured to receive the first frequency setting signal and output a frequency value signal; and a digital oscillator unit coupled to the frequency value generator unit, wherein the oscillator unit is configured to receive the frequency value signal, the digital oscillator unit being further configured to have a digital output signal at a second frequency that is directly fed back to the current phase feedback input of the phase detector unit, wherein the multiplicity of input signals to the target phase accumulator unit further includes a phase correction input value.