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US 9,318,153 B2Granted
HAMR drive fault detection system
AssigneeSeagate Technology LLC
InventorsJon D. Trantham, Robert Matousek, Todd M. Lammers
Life of this patent
Estimating the term…
Abstract
A data storage apparatus includes a controller capable of being coupled to a read/write head. The controller is configured to receive a fault signal from a sensor of the read/write head. The sensor indicates whether an energy source used to heat the recording medium is malfunctioning during a write operation. In response to the fault signal, the controller takes remedial action to protect the data associated with the write operation.
Claims12
An apparatus, comprising:
- a controller capable of being coupled to a read/write head;
- an energy source configured to heat a recording medium during a write operation;
- and
- a preamplifier coupled to the controller and the energy source, the preamplifier configured to detect an electrical fault of the energy source and in response thereto provide a fault signal to the controller, wherein the controller is configured to take remedial action comprising protecting data associated with the write operation in response the fault signal.
1 more element
A system, comprising:
- an energy source configured to heat a recording medium;
- a read/write head comprising a sensor configured to detect whether the energy source is heating a recording medium during a write operation;
- a preamplifier coupled to the energy source, the preamplifier configured to detect an electrical fault of the energy source;
- and
- a controller coupled to the read/write head and the preamplifier, and configured to:
- receive a first fault signal from the sensor indicating that the energy source is malfunctioning during the write operation and, in response to the first fault signal, take remedial action to protect data associated with the write operation;
- and
- receive an electrical fault signal from the preamplifier and, in response to the electrical fault signal, take remedial action.
5 more elements
A method, comprising:
- monitoring an energy source used to heat a recording medium during a write operation;
- detecting an electrical fault of the energy source;
- issuing an electrical fault signal if an electrical fault occurs;
- and responding to the electrical fault signal to remediate the electrical fault, wherein the responding comprises protecting data associated with the write operation.
1 more element
Dependencies are inferred from the claim text.