Preamp mode status diagnostic
AssigneeSeagate Technology LLC
InventorDale T Riley
Life of this patent
Estimating the term…
Abstract
An apparatus may include a preamplifier configured to implement multiple operational modes and configured to be connected to a magnetic read/write head, wherein the magnetic read/write head includes a read sensor to read data from a disk and a write element to write data to the disk. The preamplifier may further include an input configured to receive a test mode control signal to activate a mode monitoring mode of one or more test modes of a test mode circuit of the preamplifier, the test mode circuit configured to determine an indicator of the current operational mode of the preamplifier, and an output to provide the determined indicator of the current operational mode of the preamplifier.
Claims20
An apparatus comprising:
- a preamplifier configured to implement multiple operational modes and configured to be connected to a magnetic read/write head, wherein the magnetic read/write head includes a read sensor to read data from a disk and a write element to write data to the disk;
- the preamplifier including:
- an input configured to receive a test mode control signal to activate a mode monitoring mode of one or more test modes of a test mode circuit of the preamplifier;
- the test mode circuit configured to determine an indicator of a current operational mode of the preamplifier;
- and
- an output to provide the determined indicator of the current operational mode of the preamplifier.
A system comprising:
- a preamplifier configured to implement multiple operational modes and configured to be connected to a magnetic read/write head, wherein the magnetic read/write head includes a read sensor to read data from a disk and a write element to write data to the disk;
- the preamplifier further configured to:
- receive a test mode control signal to activate a mode monitoring mode of one or more test modes of a test mode circuit of the preamplifier;
- receive a monitored mode of the multiple operational modes to be monitored;
- determine, by the test mode circuit, an indicator of a current operational mode of the preamplifier at least in part by determining whether the current operational mode of the preamplifier is the monitored mode of the multiple operational modes;
- and
- output the determined indicator of the current operational mode of the preamplifier.
A method comprising:
- receiving, by a preamplifier configured to implement multiple operational modes, a control signal indicating a current operational mode for the preamplifier, the preamplifier configured to be connected to a magnetic read/write head, wherein the magnetic read/write head includes a read sensor to read data from a disk and a write element to write data to the disk;
- applying, by the preamplifier, a signal processing to a read signal from the read sensor based on the current operational mode;
- receiving, by the preamplifier, a test mode control signal to activate a mode monitoring mode of one or more test modes of a test mode circuit of the preamplifier;
- receiving, by the preamplifier, a monitored mode of the multiple operational modes to be monitored by the a test mode circuit;
- determining, by the test mode circuit, an indicator of the current operational mode of the preamplifier at least in part by determining whether the current operational mode of the preamplifier is the monitored mode of the multiple operational modes;
- and
- outputting, by an output of the preamplifier, the determined indicator of the current operational mode of the preamplifier.
Dependencies are inferred from the claim text.