06114915 is referenced by 56 patents and cites 10 patents.

Method and circuitry for a frequency synthesizer having wide operating frequency range. The frequency synthesizer uses multiple programmable loadable counters in a phase-locked loop arrangement to generate any combination of clock frequencies based on user programmed values. In a specific embodiment of the invention, the phase-locked loop includes a voltage-controlled oscillator with a built-in programmable phase shift. The present invention further provides a preferred embodiment for a high speed loadable down counter for use in the frequency synthesizer.

Title
Programmable wide-range frequency synthesizer
Application Number
9/285180
Publication Number
6114915
Application Date
March 23, 1999
Publication Date
September 5, 2000
Inventor
In Whan Kim
San Jose
CA, US
Wayne Yeung
San Francisco
CA, US
Khai Nguyen
San Jose
CA, US
Bonnie I Wang
Cupertino
CA, US
Chiakang Sung
Milpitas
CA, US
Xiaobao Wang
Santa Clara
CA, US
Joseph Huang
San Jose
CA, US
Agent
Townsend and Townsend and Crew
Assignee
Altera Corporation
CA, US
IPC
H03K 21/38
H03L 7/183
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