Seagate Technology Incorporated

CheeWee Cheng

Myint Ngwe

Scott Edward Ryun

Richard Edward Martin

Stefan Andrei Ionescu

Subhash Guddati

QuekLeong Choo

Jesse Speckhard

Andy Chou

KianWai Ng

KahLiang Gan

ShengYuan Lin

SweeChuan Samuel Gan

Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.

In situ sensor based contact detection

Methods and associated apparatus to reduce electrical power consumption in an information channel may include identifying times at which to restore power to elements in the information channel, and restoring power to the elements at the identified times. Times for each element are identified based on a recovery time for that element to reach a sufficiently stable operating point before a transition to an active mode of operation. By maximizing the length of time individual elements may stay in the reduced power mode, power savings may be maximized without negatively affecting information channel performance.

Power management in an information channel

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Singapore, Singapore

CheeWee Cheng