Andrew F Pavelchek

US Patent:

20020071160, Jun 13, 2002

Filed:

Sep 12, 2001

Appl. No.:

09/955520

Inventors:

Andrew Pavelchek - Poway CA,

International Classification:

H04B010/00

US Classification:

359/152000, 359/169000

Abstract:

A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced or moved. The system and method also provide a protocol for tracking small movements of one or both nodes in a link. Also, the system and method provide a protocol for recovering a link that is temporarily lost.

US Patent:

20050276608, Dec 15, 2005

Filed:

May 17, 2005

Appl. No.:

11/131746

Inventors:

Andrew Pavelchek - Poway CA,

International Classification:

H04B010/00

US Classification:

398135000

Abstract:

A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced or moved. The system and method also provide a protocol for tracking small movements of one or both nodes in a link. Also, the system and method provide a protocol for recovering a link that is temporarily lost.

US Patent:

20060291864, Dec 28, 2006

Filed:

Aug 31, 2006

Appl. No.:

11/514019

Inventors:

Andrew Pavelchek - Poway CA,

International Classification:

H04B 10/00

US Classification:

398129000

Abstract:

A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced or moved. The system and method also provide a protocol for tracking small movements of one or both nodes in a link. Also, the system and method provide a protocol for recovering a link that is temporarily lost.

US Patent:

20070297808, Dec 27, 2007

Filed:

Jun 18, 2007

Appl. No.:

11/764576

Inventors:

Andrew Pavelchek - Poway CA,

International Classification:

H04B 10/24

US Classification:

398158000

Abstract:

A system and method for establishing and maintaining optical links between optical transceiver nodes in a free space optical communications network is disclosed. The system and method provide a protocol for acquisition of an optical link between transceivers in two adjacent nodes and for re-acquisition should a node be replaced or moved. The system and method also provide a protocol for tracking small movements of one or both nodes in a link. Also, the system and method provide a protocol for recovering a link that is temporarily lost.

US Patent:

20090184860, Jul 23, 2009

Filed:

Nov 14, 2008

Appl. No.:

12/271689

Inventors:

Victor J. Chan - San Diego CA,
Gene Morgan - Lakeside CA,
Bruce Allen Brentlinger - San Diego CA,
Jimmy Hannan - San Diego CA,
Andrew Pavelchek - Poway CA,

International Classification:

G01S 7/40

US Classification:

342 21, 342173

Abstract:

Methods and apparatus are provided to facilitate the alignment of an antenna. In one aspect, there is provided a transceiver. The transceiver may include an antenna and a downconverter module coupled to the antenna. The downconverter module may convert a signal received at the antenna to another signal. The downconverter module may measure received signal strength. The transceiver may also include a sequence detector for detecting an error rate of a sequence included in the other signal. The transceiver may also include an output module for providing an output representative the error rate, the received signal strength, and a combination of the error rate and the received signal strength. The provided output may be used to enable alignment of an antenna. Related apparatus, systems, methods, and articles are also described.