Patent ID: 7928812

Claim:
A structure for use with a voltage controlled oscillator (VCO) having a plurality of frequency bands, the structure comprising: a jump-up structure and a jump-down structure; each jump-up and jump-down structure further comprising; an analog control signal to adjust a frequency value or a delay value within each frequency band; a plurality of digital control signals representing the analog control signal of a current band; a feedback loop to control an analog tuning control circuit; a monitor structure to detect a switching point for switching to an alternate band; a reset generating structure to issue one or more reset signals for suspending the operation of the VCO when the switching point is detected; a plurality of initializing structures to raise or lower the analog control signal to a value in a predetermined range; a band select structure which uses the reset signals to change the digital control signals to switch to the alternate band; a plurality of reset release structures to release the reset signals from the VCO to resume operation after switching to the alternate band when the analog control signal is equal to the value in the predetermined range; and a switch structure to couple at least one of the initializing structures to the analog control signal when the reset signal is issued, and to decouple at least one of the initializing structures from the analog control signal when the reset signal is released; wherein the jump-up and the jump-down structures detect when the analog control signal has reached a predetermined operational limit in the current band, and generate the reset signals to switch to the alternate band based on a direction of analog control signal movement, and setting a new value for the analog control signal to a predetermined operational limit for the alternate band after the VCO is released to functional mode.