Patent ID: 7230465

Claim:
A duty cycle corrector, comprising: a first circuit configured to receive a clock signal having a first phase and a second phase and to obtain a first threshold value based on the length of the first phase and part of the second phase and provide a first pulse in response to the first threshold value; and a second circuit configured to receive the clock signal and to obtain a second threshold value based on the length of the second phase and part of the first phase and provide a second pulse in response to the second threshold value, wherein the time between the start of the first pulse and the start of the second pulse is substantially one half clock cycle, and wherein the first circuit is configured to adjust charge on a first capacitor during the first phase and part of the second phase to obtain the first threshold value and the second circuit is configured to adjust charge on a second capacitor during the second phase and part of the first phase to obtain the second threshold value.