Thomas G Stockham

US Patent:

51499606, Sep 22, 1992

Filed:

Jul 3, 1991

Appl. No.:

7/725657

Inventors:

Bruce Dunne - Westmont IL
Thomas G. Stockham - Salt Lake City UT

Assignee:

R. R. Donnelley & Sons Company - Lisle IL

International Classification:

G01J 346

US Classification:

250226

Abstract:

A method of developing a set of colorant signals representing substantially exact amounts of colorants required to reproduce a color in a medium includes the steps of using a scanner to develop a first set of scanner signals, processing the set of scanner signals in an iterative conversion loop and selecting a set of colorant estimates developed by the iterative conversion loop that meets a solution criterion as the set of colorant signals. The colorant signals may thereafter be converted to colorimetric data by a converter.

US Patent:

52736326, Dec 28, 1993

Filed:

Nov 19, 1992

Appl. No.:

7/978915

Inventors:

Thomas G. Stockham - Salt Lake City UT
Jeffrey T. Ives - Salt Lake City UT

Assignee:

University of Utah Research Foundation - Salt Lake City UT

International Classification:

B01D 5702
B01D 1508

US Classification:

2041801

Abstract:

A method and apparatus for sharpening signal peaks in a signal representing the distribution of biological or chemical components of a mixture separated by a chromatographic technique such as, but not limited to, electrophoresis. A key step in the method is the use of a blind deconvolution technique, presently embodied as homomorphic filtering, to reduce the contribution of a blurring function to the signal encoding the peaks of the distribution. The invention further includes steps and apparatus directed to determination of a nucleotide sequence from a set of four such signals representing DNA sequence data derived by electrophoretic means.

US Patent:

44333480, Feb 21, 1984

Filed:

Sep 8, 1981

Appl. No.:

6/299829

Inventors:

Thomas G. Stockham - Salt Lake City UT
Bruce C. Rothaar - Salt Lake City UT

Assignee:

Soundstream, Inc. - Salt Lake City UT

International Classification:

G11B 509

US Classification:

360 51

Abstract:

The synchronization circuitry can be described as operating in essentially four states and is particularly useful at startup, to locate synchronization codes and spacing there between in the data flows. In operation, the synchronization circuitry looks in a data flow at startup for any sync code and, when such sync code is found, counts ahead to where the next sync code should be. If a proper sync code is found, again the circuitry counts ahead to where the next sync code should be, continuing looking at points along the data flow until a certain number (n) of properly located sync codes are discovered whereat synchronization is declared and normal playback is ordered. However, if sync codes are not located where they should be in the data flow, then such failures are subtracted from success until either (n) successes are found or a total of successes less failures reaches zero whereat the circuitry returns to the first state of looking for any sync code.

US Patent:

42020182, May 6, 1980

Filed:

Sep 27, 1978

Appl. No.:

5/946067

Inventors:

Thomas G. Stockham - Salt Lake City UT

Assignee:

Soundstream, Inc. - Salt Lake City UT

International Classification:

G11B 509

US Classification:

360 47

Abstract:

The present invention involves apparatus and techniques for converting analog data, preferably audio signals, to digital information, which digital information is preferably recorded from two separate main channels onto main tracks and includes a third or backup track for recording thereon partial or most significant portions of that information recorded on the main tracks. The invention involves apparatus and techniques of each data group on each main track and the backup track; checking for synchronization codes arranged between data groups; and checking for a match of that appropriate portion of the main track data against the data on the backup track, with, when potentially erroneous or questionable data is detected, the invention providing for comparison of main and backup track data groupings for determining which is most likely correct or, in the case where neither data grouping is identifiable as most likely correct, the invention provides for substitution of last correct data or integration between good data. The preferred invention incorporates clocking at the signal input for data stablization, and first-in-first-out circuitry at the output for reducing the effects of wow and flutter to produce a very high quality conversion of digital to analog form to pass to a speaker system.

US Patent:

6072885, Jun 6, 2000

Filed:

Aug 22, 1996

Appl. No.:

8/697412

Inventors:

Thomas G. Stockham - Salt Lake City UT
Douglas M. Chabries - Orem UT
Carver A. Mead - Pasadena CA

Assignee:

Sonic Innovations, Inc. - Salt Lake City UT

International Classification:

H04R 2500

US Classification:

381321

Abstract:

A hearing compensation system for the hearing impaired comprises an input transducer for converting acoustical information at an input to electrical signals at an output, an output transducer for converting electrical signals at an input to acoustical information at an output, a plurality of bandpass filters, each bandpass filter having an input connected to the output of said input transducer, a plurality of AGC circuits, each individual AGC circuit associated with a different one of the bandpass filters and having an input connected to the output of its associated bandpass filter and an output connected to the input of the output transducer. The bandpass filters and AGC circuits may be divided into two processing channels, one for low frequencies and one for high frequencies and may drive separate audio transducers, one configured for maximum efficiency at low frequencies and one configured for maximum efficiency at high frequencies.

US Patent:

55009026, Mar 19, 1996

Filed:

Jul 8, 1994

Appl. No.:

8/272927

Inventors:

Thomas G. Stockham - Salt Lake City UT
Douglas M. Chabries - Woodland Hills UT

International Classification:

H04R 2500

US Classification:

381 684

Abstract:

A hearing compensation system for the hearing impaired comprises an input transducer for converting acoustical information at an input to electrical signals at an output, an output transducer for converting electrical signals at an input to acoustical information at an output, a plurality of bandpass filters, each bandpass filter having an input connected to the output of said input transducer, a plurality of AGC circuits, each individual AGC circuit associated with a different one of the bandpass filters and having an input connected to the output of its associated bandpass filter and an output connected to the input of the output transducer.

US Patent:

43285805, May 4, 1982

Filed:

Jul 6, 1979

Appl. No.:

6/055689

Inventors:

Thomas G. Stockham - Salt Lake City UT
Bruce C. Rothaar - Salt Lake City UT

Assignee:

Soundstream, Inc. - Salt Lake City UT

International Classification:

G06F 1120

US Classification:

371 8

Abstract:

The present invention involves an apparatus and method for processing of digital information that includes duplication of information from each channel of a multi-channel recorder on main and backup tracks and provides a combination of error detection apparatus and procedures where data groupings or words on each track are individually subject to four separate tests for detecting errors and provides, from that analysis, for a selection of most likely correct data for further processing. Additionally, further system reliability is obtained by providing circuitry whereby a detected error activates a selection of data groupings coming before and after the detected error, providing where appropriate, for switching from main to backup track data over a certain number of data groupings. The present invention further provides a unique synchronization coding format with circuitry and a procedure for its use for rapidly acquiring synchronization coding in a data flow and includes an arrangement for averaging the content of first-in-first-out buffers of each track for controlling tape speed to enable a smooth over-dubbing of information recorded at different times on separate tracks.

US Patent:

58481710, Dec 8, 1998

Filed:

Jan 16, 1996

Appl. No.:

8/585481

Inventors:

Thomas G. Stockham - Salt Lake City UT
Douglas M. Chabries - Woodland Hills UT

Assignee:

Sonix Technologies, Inc. - Salt Lake City UT

International Classification:

H04R 2500

US Classification:

381321

Abstract:

A hearing compensation system for the hearing impaired comprises an input transducer for converting acoustical information at an input to electrical signals at an output, an output transducer for converting electrical signals at an input to acoustical information at an output, a plurality of bandpass filters, each bandpass filter having an input connected to the output of said input transducer, a plurality of AGC circuits, each individual AGC circuit associated with a different one of the bandpass filters and having an input connected to the output of its associated bandpass filter and an output connected to the input of the output transducer.