David R Erickson

US Patent:

8072324, Dec 6, 2011

Filed:

Feb 20, 2009

Appl. No.:

12/390386

Inventors:

David Lee Erickson - San Jose CA, US

Assignee:

iControl, Inc. - Santa Clara CA

International Classification:

G08B 21/00

US Classification:

340540, 34053926, 340521, 3405681

Abstract:

Monitoring data is received from a remote device and represents a current status value of a monitored condition at the remote device. The monitored condition is characterized by a current state that can be any one of a number of possible states. A determination is made as to whether the current status value of the monitored condition as indicated by the received data satisfies a hysteresis criterion associated with the current state of the monitored condition. If the current status value of the monitored condition satisfies the hysteresis criterion, then a determination is made as to whether the hysteresis criterion has been continuously satisfied for a specified persistence period. If the hysteresis criterion has been continuously satisfied for the specified persistence period, then the current state of the monitored condition is changed to reflect the current status value of the monitored condition, and the changed current state is recorded.

US Patent:

8199972, Jun 12, 2012

Filed:

Feb 6, 2009

Appl. No.:

12/367490

Inventors:

David Lee Erickson - San Jose CA, US

Assignee:

Icontrol, Inc. - Santa Clara CA

International Classification:

G06K 9/00
G06Q 99/00

US Classification:

382103, 382105, 382104, 705 28, 705 6

Abstract:

An unknown named territory encloses a known physical target location that is specified by a target longitude and a target latitude. An operation is performed to identify a number of rectangular-shaped terrestrial areas that each enclose both the target longitude and the target latitude. Each of the identified rectangular-shaped terrestrial areas respectively encloses a polygonal-shaped named territory. Each polygonal-shaped named territory is defined by a respective circumscribing set of contiguously positioned vectors. An operation is performed to evaluate the circumscribing sets of contiguously positioned vectors of the polygonal-shaped named territories to determine if a given polygonal-shaped named territory includes both the target longitude and the target latitude. When both the target longitude and the target latitude are found to reside within a given polygonal-shaped named territory, the identity of the given polygonal-shaped named territory is conveyed.

US Patent:

20090199002, Aug 6, 2009

Filed:

Feb 5, 2009

Appl. No.:

12/366636

Inventors:

David Lee Erickson - San Jose CA, US

Assignee:

iControl, Inc. - Santa Clara CA

International Classification:

H04L 9/32

US Classification:

713171, 713168

Abstract:

A first hash result is generated at a client system in accordance with hash input parameters known to the client system. A second hash result is generated at a server system in accordance with hash input parameters known to the server system. Each of the first hash result and the second hash result is truncated in a same manner. The truncated first hash result is transmitted from the client system to the server system. The truncated first hash result as transmitted to the server system is compared with the truncated second hash result generated at the server system. Equality between the truncated first hash result as transmitted to the server system and the truncated second hash result generated at the server system authenticates the client system to the server system.

US Patent:

20120002731, Jan 5, 2012

Filed:

Sep 2, 2010

Appl. No.:

12/874424

Inventors:

Alex Pelts - Morgan Hill CA, US
Jeffrey Fisher - Dublin CA, US
David Erickson - San Clemente CA, US
Jong-Hon Theodore Na - Irvine CA, US

International Classification:

H04N 7/26

US Classification:

37524025, 375E07027

Abstract:

A video stream demultiplxer receives video streams comprising a selected current content channel and one or more adjacent content channels. Time stamp management is concurrently performed on the adjacent content channels while decoding the selected current content channel. Timing information such as Decoding Time Stamp (DTS) and Presentation Time Stamp (PTS) values, and/or random access points (RAPs) may be determined for pictures stored for the selected current content channel and the adjacent content channels. The determined timing information is utilized to determine a Program Clock Reference (PCR) value for each of the selected current channel and the adjacent channels for channel monitoring. A timebase, derived from a PCR rate that is determined based on the determined PCR value, is determined for decoding the selected current content channel. An adjacent content channel, which is primed during decoding of the selected current content channel, may be directly decoded for display if selected.

US Patent:

20150373400, Dec 24, 2015

Filed:

Aug 31, 2015

Appl. No.:

14/841326

Inventors:

- Irvine CA, US
Jeffrey Fisher - Dublin CA, US
David Erickson - San Clemente CA, US
Jong-Hon Theodore Na - Irvine CA, US

International Classification:

H04N 21/438
H04N 21/426
H04N 21/44
H04N 21/43

Abstract:

A video stream demultiplxer receives video streams comprising a selected current content channel and one or more adjacent content channels. Time stamp management is concurrently performed on the adjacent content channels while decoding the selected current content channel. Timing information such as Decoding Time Stamp (DTS) and Presentation Time Stamp (PTS) values, and/or random access points (RAPs) may be determined for pictures stored for the selected current content channel and the adjacent content channels. The determined timing information is utilized to determine a Program Clock Reference (PCR) value for each of the selected current channel and the adjacent channels for channel monitoring. A timebase, derived from a PCR rate that is determined based on the determined PCR value, is determined for decoding the selected current content channel. An adjacent content channel, which is primed during decoding of the selected current content channel, may be directly decoded for display if selected.