David Oseto

US Patent:

20030149830, Aug 7, 2003

Filed:

Dec 28, 2001

Appl. No.:

10/034415

Inventors:

Terry Torr - Auburn CA, US
David Oseto - Newcastle CA, US

International Classification:

G06F012/00
G06F012/14
G06F012/16
G06F013/00
G06F013/28
G06F009/00
G06F009/46

US Classification:

711/100000, 709/219000

Abstract:

An interface technology is disclosed by which an application program running on a host can invoke a command to cause a third party copy engine (“3PCE”) to carry out a desired copy operation without actually generating the command needed by the 3PCE. A first code arrangement is provided, receipt of which causes a processor to generate a second code arrangement representing a third party copy command and its corresponding parameters. Also, a liaison system and method are provided. The liaison system is interposed between an application program running on a host and a 3PCE external to the host. Such a liaison system comprises: an application program interface (“API”) to receive the first code arrangement (mentioned above); and a copy command generator to generate the second code arrangement representing the third party copy command and its corresponding parameters.

US Patent:

20030177306, Sep 18, 2003

Filed:

Mar 14, 2002

Appl. No.:

10/096936

Inventors:

Robert Cochran - Roseville CA, US
David Oseto - Newcastle CA, US
Harald Burose - Herrenberg, DE

International Classification:

G06F012/00

US Classification:

711/114000, 711/154000, 711/162000

Abstract:

An apparatus, method, computer readable medium and logical device have been created for storing essentially only modified or changed information from one of a pair of mirrored storage devices. In one exemplary embodiment, essentially only tracks of information from a primary volume of a mirrored pair of mirrored storage units, which have been modified since creation of the mirror, need be stored. In another exemplary embodiment, essentially only tracks of information from a primary volume of a mirrored pair of mirrored storage units, which have been modified since a last resynchronization, need be stored. In yet another exemplary embodiment, essentially only tracks of information from a primary volume of a mirrored pair of mirrored storage units, which have been modified since a last command, need be stored. By storing actual information which was modified and by storing essentially only information which was modified, a small amount of actual information need be stored. In addition, such information can be stored on the same storage unit as, or on a storage unit separate from, one or more of the primary and secondary volumes. As such, recovery of information can occur quickly. Only necessary information need be recovered; recovery can occur quickly; and/or recovery can occur in either a forward or backward direction.

US Patent:

20040022546, Feb 5, 2004

Filed:

Jul 31, 2002

Appl. No.:

10/209023

Inventors:

Robert Cochran - Roseville CA, US
David Oseto - Newcastle CA, US

International Classification:

H04B010/04

US Classification:

398/183000

Abstract:

A pulse width of a pulse having a nominal pulse width is modulated in accordance with a digital value to be communicated. The number of clock cycles that the modulated pulse width exceeds the nominal pulse width is counted. Various embodiments use a counter to determine the extent that the modulated pulse exceeds the nominal pulse width. The counter is initialized to a value (P) upon detection of a first edge of the extended pulse. The counter is configured to rollover or is reset when the counter reaches a count of P+M, where M represents the nominal pulse width count. In various embodiments, P is zero. The counter is halted upon detection of a second edge of the extended pulse. The resulting count represents the digital data value.