Robert Wayne Horton

US Patent:

6424826, Jul 23, 2002

Filed:

Feb 3, 2000

Appl. No.:

09/497543

Inventors:

Robert Ray Horton - Apex NC

Assignee:

Ericsson, Inc. - Research Triangle Park NC

International Classification:

H04B 106

US Classification:

455255, 455259, 455552, 455314

Abstract:

A wireless mobile terminal for a wireless communication system comprises a wireless transceiver, a global positioning system (GPS) receiver, wherein the wireless transceiver and the GPS receiver share a frequency reference signal. The frequency reference signal can be multiplied by an integer multiple to create a first local oscillator for a signal conversion to an intermediate frequency for signal processing of the GPS signal. In addition, the frequency reference signal can also be divided into a lower frequency to create a second local oscillator for a conversion to a second intermediate frequency. The frequency reference signal can also be divided to create a frequency necessary for other signal processing, such as an analog-to-digital converter sampling signal at the GPS receiver. The frequency reference signal can be taken from different places within the frequency synthesis mechanism of the wireless transceiver. For example, in one embodiment the frequency reference signal is a reference oscillator signal, in another embodiment the frequency reference signal is a radio frequency signal, and in yet another embodiment the frequency reference signal is a radio frequency control signal.

US Patent:

7415626, Aug 19, 2008

Filed:

Dec 22, 2004

Appl. No.:

11/020312

Inventors:

Patrik Lilja - Raleigh NC, US
Robert R. Horton - Apex NC, US
Peter Cotterill - Cary NC, US

Assignee:

Sony Ericsson Mobile Communications AB - Lund

International Classification:

G06F 1/00

US Classification:

713500, 713323, 713322

Abstract:

Methods for activating operations of a communication device coupled to an external communication bus include detecting a communication event on the external communication bus at a wake up circuit while a host controller coupled to the external communication bus is in an inactive state. An interrupt signal is provided to a processor of the communication device that is operating using a first clock signal running at a first clock rate from a first clock responsive to detection of the communication event by the wake up circuit. A clock enable signal is provided from the processor of the communication device, responsive to the interrupt signal, to a second clock in an inactive state. The second clock is coupled to a second circuit of the communication device separate from the processor of the communications device. Active state operations of the second clock are initiated to generate a second clock signal at a second clock rate greater than the first clock rate responsive to the clock enable signal. Operation of the host controller are initiated responsive to active state operations of the second clock.

US Patent:

52652386, Nov 23, 1993

Filed:

Jan 25, 1991

Appl. No.:

7/646138

Inventors:

Francis J. Canova - Boynton Beach FL
Neil A. Katz - Parkland FL
Shaun Astarabadi - Irvine CA
Robert L. Horton - Alta Loma CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 300

US Classification:

395500

Abstract:

Apparatus and a method for automatically configuring communication port assignments in dockable portable computer systems wherein a portable computer unit is operable both on a stand-alone basis and attached (docked) to a generally stationary expansion (docking) unit providing extended connectivity and power sourcing facilities. The portable computer unit may contain integral connectors (RS232, telephone jacks, parallel port connectors, etc. ) and internal circuit devices operating through the connectors (modems, circuits supporting RS232 signalling, etc. ). The docking unit may also have such connectors and associated circuits. The computer user may assign internal logical communication paths com x (x=1, 2,. . . ) to these connectors and their associated circuits. When the portable unit is in a docked mode, care must be taken that duplicate paths are not concurrently active in the portable and docking units leading to potentially conflicting signal processes in the units.

US Patent:

60412224, Mar 21, 2000

Filed:

Sep 8, 1997

Appl. No.:

8/925566

Inventors:

Robert Ray Horton - Apex NC
William O. Camp - Chapel Hill NC

Assignee:

Ericsson Inc. - Research Triangle Park NC

International Classification:

H04B 140

US Classification:

455255

Abstract:

A wireless mobile terminal for a wireless communication system comprises a wireless transceiver, a global positioning system (GPS) receiver, wherein the wireless transceiver and the GPS receiver share a frequency reference signal. The frequency reference signal can be multiplied by an integer multiple to create a first local oscillator for a signal conversion to an intermediate frequency for signal processing of the GPS signal. In addition, the frequency reference signal can also be divided into a lower frequency to create a second local oscillator for a conversion to a second intermediate frequency. The frequency reference signal can also be divided to create a frequency necessary for other signal processing, such as an analog-to-digital converter sampling signal at the GPS receiver. The frequency reference signal can be taken from different places within the frequency synthesis mechanism of the wireless transceiver. For example, in one embodiment the frequency reference signal is a reference oscillator signal, in another embodiment the frequency reference signal is a radio frequency signal, and in yet another embodiment the frequency reference signal is a radio frequency control signal.

US Patent:

58024506, Sep 1, 1998

Filed:

Apr 19, 1996

Appl. No.:

8/634723

Inventors:

Robert R. Horton - Apex NC

Assignee:

Ericsson Inc. - Research Triangle Park NC

International Classification:

H04B 104

US Classification:

455114

Abstract:

A method and apparatus for initializing a radio transmission apparatus comprising a voltage control oscillator, a phase lock loop, and a power amplifier is disclosed so as to avoid generating unwanted interference in neighboring radio channels. First, the voltage control oscillator is enabled and the phase locked loop is switched from a narrow band mode to a wide bandwidth mode to give faster settling time and reduced overshoot. The power amplifier is then smoothly ramped up to a final power level. Finally, the phase locked loop is switched from the wide bandwidth mode to the narrow bandwidth mode after the power amplifier has substantially reached the final power level.

US Patent:

59493836, Sep 7, 1999

Filed:

Oct 20, 1997

Appl. No.:

8/953939

Inventors:

Gerard James Hayes - Wake Forest NC
Robert Ray Horton - Apex NC

Assignee:

Ericsson Inc. - Research Triangle Park NC

International Classification:

H01Q 916
H01Q 124

US Classification:

343795

Abstract:

An antenna structure includes a center feed dipole antenna having first and second radiating sections that extend along a substrate from a center feed point. A feed section is electrically coupled to the center feed point. The feed section includes a radio frequency input line and a ground line extending along the substrate adjacent one another. A balun extends along the substrate between the first radiating section and the ground line. The first radiating section, the radio frequency input line, the ground line and the balun preferably extend along the substrate in parallel. A tuning shunt may also be provided across the balun for dual band operation. Accordingly, compact dual band antenna structures including baluns may be provided.