Programmable writer overdrive
AssigneeAvago Technologies International Sales Pte. Limited
InventorsJeffrey A. Gleason, Jason Paul Brenden, Cameron Carroll Rabe, Paul Mark Mazur
Life of this patent
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Abstract
An apparatus including a current source. The current source divides a current from a voltage supply into current streams in response to converting a voltage from a voltage supply into a plurality of current streams. The current source modulates a current streams with signals to convert the current streams into first and second current streams. The current source combines the first and second current streams into a single current stream and supplies the single current stream to a load in a flow direction.
Claims19
An apparatus comprising:
- a current source configured to:
- divide current from a voltage supply into a plurality of current streams, produce, by modulating a first one of the current streams with a first signal, a first current stream that mirrors the first signal, produce, by modulating a second one of the current streams with a second signal, a second current stream that mirrors the second signal, and
- supply, in response to combining the first and second current streams into a single current stream, the single current stream to a load in a flow direction;
- wherein the second signal comprising a signal having a pulse width shorter than a pulse width of the first signal.
An apparatus comprising:
- a controller configured to:
- create a first signal that transitions along with a transitioning of data, and create a second signal a pulse width shorter than a pulse width of the first signal;
- and
- a current source configure to:
- divide, in response to converting a voltage from a voltage supply into a plurality of current streams, a current from the voltage supply into the current streams, convert, by modulating a first one of the current streams with the first signal, the first one of the current streams into a first current stream, convert, by modulating a second one of the current streams with the second signal, the
- second one of the current streams into a second current stream, and
- supply, in response to combining the first and second current streams into a single current stream, the single current stream to a load in a flow direction;
- wherein the second signal comprises a signal that transitions on an edge of the first signal.
A method comprising:
- creating, by a controller, a first signal that transition along with a transitioning of data, and
- creating, by the controller, a second signal a pulse width shorter than a pulse width of the first signal;
- and
- dividing, by a current source in response to the current source converting a voltage from a voltage supply into a plurality of current streams, a current from the voltage supply into the current streams,
- converting, in response to the current source modulating a first one of the current streams with the first signal, the first one of the current streams into a first current stream,
- converting, in response to the current source modulating a second one of the current streams with the second signal, the second one of the current streams into a second current stream, and
- supplying, by the current source in response to combining the first and second current streams into a single current stream, the single current stream to a load in a flow direction;
- wherein the second signal comprising a signal having a pulse width shorter than a pulse width of the first signal.
Dependencies are inferred from the claim text.