DC-control for post processor
AssigneeMarvell International Ltd.
InventorMats Oberg
Life of this patent
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Abstract
Systems and techniques relating to interpreting signals on a noisy channel. A direct current (DC) correction can be applied to an input of a post processor outside of a main read path that supplies data detector output to the post processor. A signal processing apparatus can include a data detector, a post processor responsive to an output of the data detector, and one or more DC control units configured and arranged to apply a first DC correction to an input of the data detector and a second DC correction to an input of the post processor, wherein the second DC correction is different from the first DC correction.
Claims18
A signal processing apparatus comprising:
- a data detector;
- a post processor responsive to an output of the data detector;
- one or more direct current (DC) control units configured and arranged to apply a first DC correction to an input of the data detector and a second DC correction to an input of the post processor, wherein the second DC correction is different from the first DC correction;
- and
- an adder that combines an output signal of the one or more DC control units with an input signal of a signal equalizer to apply the second DC correction to the input of the post processor.
A signal processing apparatus comprising:
- a data detector;
- a post processor responsive to an output of the data detector;
- one or more direct current (DC) control units configured and arranged to apply a first DC correction to an input of the data detector and a second DC correction to an input of the post processor, wherein the second DC correction is different from the first DC correction;
- and
- an adder that combines an output signal of the one or more DC control units with an output signal of a signal equalizer to apply the second DC correction to the input of the post processor.
A method comprising:
- processing a signal with a data detector to identify data in the signal;
- applying a first direct current (DC) correction to an input of the data detector;
- and
- applying a second DC correction, which is different from the first DC correction, to an input of a post processor that is responsive to an output of the data detector;
- wherein applying the second DC correction comprises combining a DC correction signal with an input signal of an equalizer.
A method comprising:
- processing a signal with a data detector to identify data in the signal;
- applying a first direct current (DC) correction to an input of the data detector;
- and
- applying a second DC correction, which is different from the first DC correction, to an input of a post processor that is responsive to an output of the data detector;
- wherein applying the second DC correction comprises combining a DC correction signal with an output signal of an equalizer.
Dependencies are inferred from the claim text.