Scan velocity modulation technique
AssigneeZilog, Inc.
InventorAnatoliy V. Tsyrganovich
Life of this patent
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Abstract
A video signal is split into a first signal and a second signal. The first signal includes low amplitude/high frequency components of the video signal, which can be properly amplified by a video amplifier. The second signal includes high amplitude/high frequency components of the video signal, which cannot be properly amplified by the video amplifier. The first signal is combined with the video signal, amplified by the video amplifier, and used to modulate the intensity of an electron beam. The second signal is amplified by a scan velocity modulation amplifier and used to modulate the horizontal scan velocity of the electron beam.
Claims30
A method for modulating a horizontal scan velocity of an electron beam, the method comprising:
- generating a first signal that includes high amplitude/high frequency components of a video signal, but does not include low amplitude/high frequency components of the video signal and does not include low frequency components of the video signal;
- and
- modulating the horizontal scan velocity of the electron beam using the first signal.
A circuit comprising a scan velocity modulation processor operable to generate a first signal that includes high amplitude/high frequency components of a video signal, but does not include low amplitude/high frequency components of the video signal and does not include low frequency components of the video signal, wherein the first signal is used to modulate a horizontal scan velocity of an electron beam.
A method comprising:
- receiving an input signal;
- and
- splitting the input signal into a first signal and a second signal, the first signal including low amplitude/high frequency components, but not high amplitude/high frequency components, and the second signal including high amplitude/high frequency components, but not low amplitude/high frequency components, wherein the second signal is used to modulate a horizontal scan velocity of an electron beam.
A circuit comprising:
- a scan velocity modulation processor coupled to receive an input signal, the scan velocity modulation processor operable to split the input signal into a first signal and a second signal, the first signal including low amplitude/high frequency components, but not including high amplitude/high frequency components, and the second signal including high amplitude/high frequency components, but not including low amplitude/high frequency components;
- wherein the second signal is used to modulate a horizontal scan velocity of an electron beam.
Dependencies are inferred from the claim text.