Brian D Terry

US Patent:

6731712, May 4, 2004

Filed:

Feb 4, 2000

Appl. No.:

09/497717

Inventors:

Mats Lindstrom - San Diego CA
Brian K. Terry - Carlsbad CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H03D 324

US Classification:

375376, 327156, 375374

Abstract:

A fully integrated single-loop frequency synthesizer, which can serve as a local oscillator for a broadband tuner, is disclosed, thus allowing the creation of a single-chip solution for broadband applications. The tank circuits are integrated into the tuner chip through the combination of a phase-locked loop and multiple on-chip VCOs comprising narrow-tuning range varactors. Drift in the VCOs caused by heat is overcome by designing the VCOs to overlap each other. Initial tolerance problems associated with the VCOs are overcome by the use of a calibration method. The calibration of the VCOs is accomplished by utilizing the lock detect output of the phase-locked loop and a binary search algorithm. The edges of each VCO are determined with this calibration method, thereby enabling VCO selection based on the desired channel. A sufficient number of VCOs are provided such that whatever the initial tolerance shift, the full broadband spectrum can still be covered after calibration.

US Patent:

7177382, Feb 13, 2007

Filed:

Feb 25, 2004

Appl. No.:

10/786921

Inventors:

Mats Lindstrom - San Diego CA, US
Brian K. Terry - Carlsbad CA, US

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H03D 3/24
H03C 7/06

US Classification:

375376, 375373, 327156

Abstract:

A fully integrated single-loop frequency synthesizer, which can serve as a local oscillator for a broadband tuner, is disclosed, thus allowing the creation of a single-chip solution for broadband applications. The tank circuits are integrated into the tuner chip through the combination of a phase-locked loop and multiple on-chip VCOs comprising narrow-tuning range varactors. Drift in the VCOs caused by heat is overcome by designing the VCOs to overlap each other. Initial tolerance problems associated with the VCOs are overcome by the use of a calibration method. The calibration of the VCOs is accomplished by utilizing the lock detect output of the phase-locked loop and a binary search algorithm. The edges of each VCO are determined with this calibration method, thereby enabling VCO selection based on the desired channel. A sufficient number of VCOs are provided such that whatever the initial tolerance shift, the full broadband spectrum can still be covered after calibration.

US Patent:

20040123410, Jul 1, 2004

Filed:

Aug 13, 2003

Appl. No.:

10/640426

Inventors:

Brian Terry - Coronado CA, US
Nicholas Stein - Coronado CA, US

International Classification:

A46B013/02
A47L017/04

US Classification:

015/023000, 015/028000, 015/097100

Abstract:

The present invention relates to a cleaning device for use in the kitchen sink having a drive shaft, joint assembly, a housing and a storage rack. The drive shaft rotates about an axis of rotation which is defined by the joint assembly. The drive shaft includes an applicator for cleaning a surface. The applicator may be in the form of a sponge, pad, scourer, brush or other cleaning tool. The surface may be that of a dish, glass, piece of cutlery, cooking utensil, pot, pan or other tableware.