Julie T Phan

US Patent:

8223657, Jul 17, 2012

Filed:

Aug 27, 2009

Appl. No.:

12/549043

Inventors:

Ed Geiger - San Martin CA, US
Vinh Le - Fremont CA, US
Nhan Nguyen - San Jose CA, US
Julie Phan - San Jose CA, US

Assignee:

Symbol Technologies, Inc. - Holtsville NY

International Classification:

H04W 24/02

US Classification:

370241, 370252

Abstract:

Techniques are provided for selecting one of a plurality of clock signals used to drive a bus of a WLAN-enabled device having a WLAN radio module coupled to the bus and designed to operate over a plurality of WLAN channels. A network infrastructure device, such as an access point or port, is provided that comprises a WLAN radio module, a PCI bus coupled to the WLAN radio module, a look up table (LUT) and a processor. The WLAN radio module designed to operate over a plurality of WLAN channels in a first frequency band. The LUT comprises a plurality of entries. Each entry comprises: a particular one of the WLAN channels and a corresponding one of a first clock signal having a first clock frequency and a second clock signal having a second clock frequency that is to be selected. The first clock signal causes interference at the WLAN radio module when operating over a first subset of the WLAN channels, and the second clock signal causes interference at the WLAN radio module when operating over a second subset of the WLAN channels. The processor selects, from the LUT based on the one of the WLAN channels that has been selected for the WLAN radio module to communicate over, either the first clock signal or the second clock signal that is to be used to drive the bus.

US Patent:

8225124, Jul 17, 2012

Filed:

Jul 30, 2008

Appl. No.:

12/182580

Inventors:

Edward W. Geiger - San Martin CA, US
Julie Hanh Phan - San Jose CA, US
Patrick Wallace - San Jose CA, US

Assignee:

Symbol Technologies, Inc. - Holtsville NY

International Classification:

G06F 1/26

US Classification:

713340, 713320

Abstract:

The present invention relates generally to methods and systems for determining a class of power delivered via power sourcing equipment (“PSE”) utilizing power over Ethernet (“POE”) technology. Described is a method including operating an network device at a first power setting, increasing a power requirement of the network device, detecting a second power setting based on an amount of power available from a power source, the second power setting being greater than the first power setting, determining whether one or more resources of the network device is operable at the second power setting, operating the network device at the second power setting if the one or more resources is operable, and activating an alert if the one or more resources is not operable. Further described is a system including a network device operating at a first power setting, the network device increases a power requirement, a power source providing an amount of power to the network device at a second power setting, the second power setting being greater than the first power setting, and a server determining whether one or more resources of the network device is operable at the second power setting, wherein the network device operates the at the second power setting if the one or more resources is operable, and the network device activates an alert if the one or more resources is not operable.

US Patent:

20090309420, Dec 17, 2009

Filed:

Jun 13, 2008

Appl. No.:

12/138890

Inventors:

Julie Hanh PHAN - San Jose CA, US
Eric Tokubo - Newark CA, US
Josh Rosenthal - San Jose CA, US

International Classification:

H02J 1/10

US Classification:

307 43

Abstract:

A system includes (a) an access point; (b) a switch providing power for use in the access point; and (c) a combiner disposed between the switch and the access point. The combiner receives at least two power supplies from the switch. The combiner is configured to combine the at least two power supplies to generate a third power supply. The third power supply is transferred to power the access point.