William C Shoemaker

US Patent:

47776161, Oct 11, 1988

Filed:

May 12, 1986

Appl. No.:

6/862281

Inventors:

B. J. Moore - Monte Sereno CA
William E. Shoemaker - Monte Sereno CA

Assignee:

Outlook Technology, Inc. - Saratoga CA

International Classification:

G06F 1100
G01R 3128

US Classification:

364900

Abstract:

Techniques for a logic analyzer instrument that permit the acquisition of digital samples from a plurality of logic signals in a large mainframe computer, or other system under test, in a manner that the signals can be reconstructed for viewing and analysis of the relationship between them. Edges of the signals are located, during their reconstruction, with many times higher resolution than that of the sampling clock. A plurality of sample records, asynchronously timed, are taken of the logic signals from the system under test, and the samples are combined in a way that locates logic signal edges with precision.

US Patent:

44556136, Jun 19, 1984

Filed:

Nov 25, 1981

Appl. No.:

6/324732

Inventors:

William E. Shoemaker - Santa Clara CA

Assignee:

Gould Inc. - Rolling Meadows IL

International Classification:

G01R 2316

US Classification:

364487

Abstract:

A technique utilizing either particular software with a microprocessor or computer or a hard wired digital or analog circuit for determining, from a few sample magnitudes acquired from an analog signal at equal time intervals, the shape of the waveform and displaying it. The analog waveform slope at each sample is calculated from the magnitude of the two samples taken from the waveform immediately preceding a given sample and the two immediately following the given sample. A slope of the analog waveform intermediate of each sample interval is then calculated from this information, leading to a final calculation of the magnitude of a selected number of points during the sample interval. The acquired sample magnitudes and the calculated intermediate magnitudes are then combined in a display of a reconstruction of the original analog waveform.

US Patent:

42041147, May 20, 1980

Filed:

Feb 24, 1978

Appl. No.:

5/880876

Inventors:

William E. Shoemaker - Los Altos CA
David W. Wilson - San Jose CA

Assignee:

Gould Inc. - Rolling Meadows IL

International Classification:

G06F 1106
G01R 1512

US Classification:

371 25

Abstract:

Techniques for displaying on a cathode ray tube a plurality of logic signals either from a single electronic circuit under test wherein the signals are acquired by a single probe, or in comparison to signals from a known good electronic circuit of the same type wherein compensation is provided to eliminate differences in the logic signals that are due to differences in the timing signal frequencies of the two circuits.

US Patent:

20180319482, Nov 8, 2018

Filed:

May 22, 2018

Appl. No.:

15/986596

Inventors:

- Mountain View CA, US
William C. Shoemaker - Campbell CA, US

International Classification:

B64C 13/14
B64C 29/00

Abstract:

A lever outputs a first signal level where the first signal level is based at least in part on the position of the lever and the first signal level is used to control a first set of rotors associated with a vertical propulsion system. A thumb controller (coupled to the vertical thrust lever) outputs a second signal level where the second signal level is based at least in part on the position of the thumb controller, the second signal level is used to control a second set of rotors associated with a horizontal propulsion system, and the thumb controller includes a detent associated with a recommended sustained maximum.