A clock recovery circuit capable of automatically adjusting the frequency range of a VCO (Voltage controlled Oscillator) without involving a look-up-table. The clock recovery circuit includes a main PLL (Phase locked loop) and an auxiliary PLL. The main PLL is a typical PLL for generating a main oscillation...http://www.google.com/patents/US20040196941?utm_source=gb-gplus-sharePatent US20040196941 - Clock recovery circuit capable of automatically adjusting frequency range of VCO
