Seagate Technology Incorporated

Sumit Chandra

Paul Allison Beatty

Rory Stephan Goodman

Dennis Quinto Cruz

Jeffrey James Croxall

Jonathan Pahl Jones

Ishak Sugeng Iskandar

Robert Billings Church

Brian T Dahl

Serene Kiang Low

Richard Nguyen

MuChong Lim

Aspects of the disclosure are directed to apparatuses and methods involving particulate sampling. As may be consistent with one or more embodiments, an apparatus includes a flow direction structure, a flow sampler and a particle collector having a collecting surface. The flow direction structure has interior sidewalls that direct the flow of particulate-laden gas along a flow path. The flow sampler is located in the flow path within the interior sidewalls, and operates with the flow direction structure to sample a portion of the particulate-laden gas at a reduced velocity, while allowing another portion of the particulate-laden gas to exhaust around the flow sampler. The flow sampler operates with the particle collector to direct the sampled portion of the particulate-laden gas to the collecting surface, and to adhere particulates from the particulate-laden gas to the collecting surface.

Particle collector

Aspects of the disclosure are directed to apparatuses and methods involving filters and detection of operation thereof. As may be consistent with one or more embodiments, an apparatus includes a fixture having mechanical components that hold a filter. Gas flow componentry operates with the fixture to eject particles from the filter by subjecting the filter to gas flow. A flow metering circuit meters the gas flow, and a particulate counter detects the ejected particles.

Filtration, filter characterization, and methods and apparatuses therefor

A control method is provided for loading a data transfer head to a data storage medium comprising: determining a desired maximum displacement between a parked position of the head and an encroaching position of the head in relation to a selected data storage track of the medium; determining a spin interval associated with a predetermined quantity of medium movement before the head reaches the encroaching position; rotating the data storage medium at a beginning of the spin interval; and moving the actuator during the spin interval from the parked position and at a velocity resulting in the head being displaced at the end of the spin interval a distance that is less than the maximum displacement. A data storage device is contemplated comprising programmed instructions for performing this method for a predetermined number of loading occurrences, or in relation to observing a threshold data transfer error rate.

Adaptive control of head velocity during data storage device startup

Growing community of inventors

Longmont, CO, United States of America

Sumit Chandra