CHRISTOPHER LYNN MCCRANK
Pilots at Bouldin Ave, Austin, TX

6356765, Mar 12, 2002

Jul 27, 1999

09/360953

Christopher L. McCrank - Austin TX

Legerity, Inc. - Austin TX

H04Q 720

455465, 455414, 455426, 455462, 455463

In one aspect of the present invention, a method and apparatus are provided for tracking a plurality of frequency-shift-key modulated signals in a communications device. The method includes determining a first threshold value for a first input signal of the plurality of signals, comparing the first input signal to the first threshold value and providing a first output signal. The method includes determining a second threshold value for a second input signal of the plurality of signals, and retaining at least a portion of the first threshold value while determining the second threshold value.

6269086, Jul 31, 2001

Feb 27, 1998

9/031896

Javier V. Magana - Austin TX
Christopher L. McCrank - Austin TX

Legerity, Inc. - Austin TX

H04J 300

370280

A cordless telephone provides extended operating range and battery life. In one embodiment, a time division duplex communications protocol is used when the measured signal strength or the signal quality between the handset and a corresponding base unit does not satisfy a known criteria, such as a predetermined threshold. The telephone is also configured to operate using a frequency division duplex communications protocol when the signal strength or signal quality between the handset and the base unit satisfies the known criteria. Other aspects of the invention are directed to measuring the received signal strength of the communications channel after initial communications is established, and selecting the communications protocol that is most advantageous in light of the measured signal strength and/or signal conditions.

7042923, May 9, 2006

Jul 27, 1999

09/361893

Christopher L. McCrank - Austin TX, US
Javier V. Magaña - Austin TX, US

Legerity, Inc. - Austin TX

H04K 1/00, H04B 15/00, H04L 27/30

375133, 375132, 375344, 370437

A communications system includes a first and second communication unit coupled together via a radio communications link. In one embodiment, the communications system takes the form of a frequency hopped, spread spectrum digital cordless telephone, where the first unit is a base unit and the second unit is the remote unit. The first and second communication units are respectively set to transmit and receive communication over a first radio frequency during a first time frame, select a second radio frequency during the first time frame, and set to respectively receive and transmit communication over the second radio frequency during a second time frame.

2010014, Jun 10, 2010

Dec 8, 2008

12/315935

Christopher L. McCrank - Austin TX, US
Joshua Caskey - Austin TX, US

G01C 21/30, G01S 1/00

701213, 34235706

In one embodiment, a method for performing testing of a receiver is provided. The method may include recording performance data associated with a radio signal received by a receiver, and recording global positioning system (GPS) data, where the GPS data is obtained from a GPS receiver co-located with the receiver. Then this data may be processed to map the performance data with the GPS data to indicate at least a location of the receiver and a corresponding receiver performance metric.

6865375, Mar 8, 2005

Feb 24, 1999

09/256543

Christopher L. McCrank - Austin TX, US
Javier V. Magaña - Austin TX, US

Legerity, Inc. - Austin TX

H04Q007/20

455 70, 455502, 455462

In one aspect of the present invention, a method and apparatus are provided. The method includes detecting a synchronization signal within a plurality of channels. The method includes selecting a subset of the plurality of channels, wherein the subset includes more than one channel. The method further includes determining if the synchronization signal exists on at least one of the subset of channels and initiating communications in response to determining that the synchronization signal exists on at least one of the subset of channels.