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Christopher William Watanabe, 49Denver, CO

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Resumes

Christopher Watanabe Photo 23

Design Engineer At Quantum V

Location:
Greater Denver Area
Industry:
Computer Hardware
Christopher Watanabe Photo 24

Christopher Watanabe

Location:
United States

Publications & IP owners

Us Patents

Detecting Lto Servo Patterns On Perpendicular Recorded Media

US Patent:
2011022, Sep 22, 2011
Filed:
Mar 16, 2010
Appl. No.:
12/724712
Inventors:
Christopher M. Watanabe - Broomfield CO, US
Assignee:
QUANTUM CORPORATION - San Jose CA
International Classification:
G11B 19/02
US Classification:
360 69, G9B 19001
Abstract:
In one embodiment, a servo processing circuit comprises a correlation filter and a Lagrange interpolator peak detector coupled to the correlation filter. The correlation filter is operable to receive a first signal as input; correlate the first signal with a reference signal; and produce a second signal as output, wherein the second signal indicates a correlation between the first signal and the reference signal. The Lagrange interpolator peak detector is operable to receive the second signal as input; detect one or more peaks in the second signal; and produce a third signal as output, wherein the third signal indicates one or more peak locations of the peaks in the second signal.

Replaceable Memory Element In A Single Reel Tape Cartridge

US Patent:
2004000, Jan 8, 2004
Filed:
Jul 3, 2002
Appl. No.:
10/189810
Inventors:
Christopher Watanabe - Broomfield CO, US
Chan Kim - Franklin MA, US
Stephen Stamm - Ft. Lupton CO, US
David Craft - Northborough MA, US
George Saliba - Northborough MA, US
Richard Chaney - Elbert CO, US
Satya Mallick - Milford MA, US
International Classification:
G11B023/02
US Classification:
360/132000
Abstract:
A tape cartridge including a replaceable memory element is provided. The tape cartridge includes a cartridge housing that includes a supply reel having a magnetic tape media spooled thereon and a memory element to communicate with a tape cartridge handling device via a wireless connection. In one embodiment of the invention, the memory element is connected to the cartridge housing using an attachment apparatus that provides a detachable connection with the cartridge housing. In one aspect of the invention, the attachment apparatus also includes a tuning mechanism for positioning the memory element following attachment to the tape cartridge housing to facilitate communication exchange with the tape-handling device.

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