Automatic gain control with improved cross-modulation
AssigneeThomson Licensing
InventorAlexander Sarapin
Life of this patent
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Abstract
An apparatus such as a television signal receiver provides an AGC function which reduces cross-modulation distortion. According to an exemplary embodiment, the apparatus includes a source of an input signal and a gain control circuit coupled to the source of the input signal. The gain control circuit provides a first control signal at a first level to a first amplifier while a magnitude of the input signal is within a first range and provides the first control signal at a second level to the first amplifier while the magnitude of the input signal is within
Claims24
A method, comprising steps of:
- receiving an input signal;
- providing a first control signal at a first level to a first gain controlled amplifier while a magnitude of said input signal is within a first range;
- and
- providing said first control signal at a second level to said first gain controlled amplifier while said magnitude of said input signal is within a second range.
An apparatus, comprising:
- a source of an input signal;
- and
- a gain control circuit coupled to said source of said input signal, wherein:
- said gain control circuit provides a first control signal at a first level to a control input of a first amplifier while a magnitude of said input signal is within a first range;
- and
- said gain control circuit provides said first control signal at a second level to said control input of said first amplifier while said magnitude of said input signal is within a second range.
An apparatus, comprising:
- first means for receiving an input signal;
- and
- second means for providing a first control signal at a first level to a first gain controlled amplifier while a magnitude of said input signal is within a first range and providing said first control signal at a second level to said first gain controlled amplifier while said magnitude of said input signal is within a second range.
Dependencies are inferred from the claim text.