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US 2006/0232312 A1Published application
Method and apparatus for reducing duty cycle distortion of an output signal
AssigneeMicron Technology, Inc.
InventorsR. Baker, Timothy Cowles
Life of this patent
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Abstract
A method and apparatus for reducing the duty cycle distortion of a periodic signal in high speed devices. More specifically, there is provided a device having a switching point modulation circuit coupled to input logic and configured to modulate the periodic output signal from the input logic such that the periodic output signal is centered about a known voltage signal, such as a switching point voltage signal.
Claims20
A device comprising:
- input logic configured to receive a input periodic signal and output an intermediate periodic signal having a DC component and an AC component;
- output logic coupled to the input logic and configured to receive the intermediate periodic signal and output an adjusted signal;
- and
- a switching point modulation circuit coupled to the input logic and the output logic, wherein the switching point modulation circuit is configured to drive the DC component of the intermediate periodic signal to a switching point voltage.
1 more element
A device comprising:
- a modulation circuit having a differential amplifier configured to sense a central voltage of a periodic signal and adjust the periodic signal such that the central voltage generally equals a switching point voltage.
A method, comprising:
- comparing the average voltage of a periodic signal to a desired voltage;
- if the average voltage of the periodic signal is less than the desired voltage, conducting current to the periodic signal;
- and
- if the average voltage of the periodic signal is greater than the desired voltage, conducting current from the periodic signal.
1 more element
Dependencies are inferred from the claim text.