Daniel S Bishop

US Patent:

6633621, Oct 14, 2003

Filed:

Mar 20, 2000

Appl. No.:

09/531689

Inventors:

Daniel Eric Bishop - Gilbert AZ
George Jeffrey Geier - Scottsdale AZ
Jeffrey Scott Moffett - Gilbert AZ
George Arthur Schauer - Chandler AZ
Roger Charles Hart - Gilbert AZ
Joel Lloyd Gross - Gilbert AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03D 324

US Classification:

375376, 375375

Abstract:

A system for synchronizing a clock includes a phase-locked loop (PLL) circuit that generates or receives ( ) timing errors that are based on timing information from multiple timing sources. Gain blocks ( ) weight ( ) the timing errors, which are then combined ( ) into a loop time error. A loop integrator ( ) integrates ( ) the loop time error to produce an input used to adjust ( ) an oscillator frequency. A corresponding oscillator clock signal is fed back ( ) to one or more phase detectors ( ), which receive ( ) timing reference signals and generate timing errors. When a timing errors indicates that a problem exists with a timing source, the impact of the problematic timing source is reduced ( ), or oscillator frequency adjustments are suspended ( ). When used on a satellite ( ), at least one of the timing errors can be based on times of transmit and times of arrival of time messages exchanged between the satellite and its neighbors ( ).

US Patent:

20120088258, Apr 12, 2012

Filed:

Mar 25, 2010

Appl. No.:

13/258585

Inventors:

Daniel Bishop - Phoenix AZ, US
Jeffrey La Belle - Tempe AZ, US

Assignee:

Arizona Board of Regents, a body corporate of the State of Arizona - Scottsdale AZ

International Classification:

C12Q 1/54
G01N 27/327
G01N 33/53
G01N 21/76

US Classification:

435 792, 435 71, 435 14, 204400, 205789, 205782, 2057775

Abstract:

The invention relates to a device and method for non-invasive detection of an analyte in a fluid sample. In one embodiment, the device comprises: a collection chamber containing an absorbent hydrogel material; a fluidic channel connected to the collection chamber; a sensing chamber connected to the fluidic channel, wherein the device is comprised of a compressible housing that allows transfer of fluid collected by the collection chamber to be transferred to be extracted and withdrawn to the sensing chamber upon compression of the device, wherein the sensing chamber contains a material that specifically detects the analyte and wherein the sensing chamber is operably linked to a processor containing a potentiostat that allows detection of the analyte using electrochemical sensing.