Stephen M Shu

US Patent:

6511402, Jan 28, 2003

Filed:

Jan 23, 2001

Appl. No.:

09/768775

Inventors:

Stephen K. Shu - Fountain Valley CA
Kirk A. Buhler - Corona CA
James W. Pittaway - Anaheim CA

Assignee:

Unisen, Inc. - Irvine CA

International Classification:

A63B 2100

US Classification:

482 4, 482900

Abstract:

An exercise machine is described which is entirely self-contained without any source of outside power. A rechargeable battery is used to maintain the exercise system operative for a time-out period. At all other times the machine is powered by the user. The machine is compact, light, rigid and sized to fit through a standard doorway. The entire exercise machine is provided with a wrap-around handrail into which a display input/output unit has been integrally provided. The exercise machine or stepper utilizes a dynamically controllable load or alternator which is controlled by a computer circuit to maintain the power input into the exercise machine or to maintain metabolically energy consumption rate within a user of the exercise machine at a predetermined, approximately constant level, regardless of the speed of stepping or the actual or effective weight of the user. The alternator is dynamically controlled by pulse width modulating its field coils. The power output by the generator is sensed by monitoring the alternators output current and voltage.

US Patent:

6818017, Nov 16, 2004

Filed:

Feb 15, 2001

Appl. No.:

09/788041

Inventors:

Stephen Shu - Laguna Niguel CA 92677

International Classification:

A61F 216

US Classification:

623 611, 623 632, 623 634, 623 637

Abstract:

A high gain lens system for implant into the capsular bag after removal of the natural crystalline lens. A preferred embodiment of the invention comprises a combination of a positive or convex lens and a negative or concave lens. These two lenses are spaced from one another and their relative spacing and respective focal lengths determine their combined focal length. When the lens system is inserted into the capsular bag, two opposed haptic flanges on each side, extend toward the inner radial edge of the bag adjacent the ciliary muscles. When the muscles contract, the bag is stretched thereby compressing the haptic flanges together or at least toward one another. This action cause the two lenses to separate further from each other and the increased spacing between the positive and negative lenses shortens the focal length to permit focusing of objects at near distances. On the other hand, when the muscles relax, the bag relaxes also, the haptic flanges separate and the lenses come closer together. The reduced spacing between the positive and negative lenses, increases the focal length to permit focusing of objects at far distances.

US Patent:

7200088, Apr 3, 2007

Filed:

Jan 10, 2002

Appl. No.:

10/043688

Inventors:

Mark Oscar Worthington - Irvine CA, US
Stephen Kou-An Shu - Laguna Niguel CA, US
Kevin Robert McIntyre - Irvine CA, US

Assignee:

Burstein Technologies, Inc. - Irvine CA
Nagaoka & Co., Ltd. - Hyogo

International Classification:

G11B 11/03

US Classification:

369 5331, 369 4441

Abstract:

An optical disc system includes a photo detector circuit of an optical disc drive and a signal processing system. The photo detector circuit is configured to generate at least one information-carrying signal from an optical disc assembly. The signal processing system is coupled to the photo detector circuit to obtain from the at least one information-carrying signal both operational information used to operate the optical disc system and data indicative of presence and/or characteristics of an investigational feature associated with the optical disc assembly. Methods and discs for imaging a biological or medical investigational feature are also provided.

US Patent:

8419789, Apr 16, 2013

Filed:

Nov 23, 2011

Appl. No.:

13/304251

Inventors:

Stephen K. Shu - Irvine CA, US
Benton Bejach - North Tustin CA, US

Assignee:

Patentsplus LLC - North Tustin CA

International Classification:

A61M 1/10

US Classification:

623 31

Abstract:

Disclosed herein is a fully implantable artificial heart. The use of flat helical springs to align and reciprocate a bellows structure allows the bellows to pump blood, the multiple solenoids with floating magnetized rods and permanent magnet assemblies held by the flat helical springs provide the power. The artificial heart pumps blood with virtually no friction and no parts to wear out. The use of solenoids advantageously move blood in a gentle, controllable manner.

US Patent:

20040148023, Jul 29, 2004

Filed:

Jan 15, 2004

Appl. No.:

10/758830

Inventors:

Stephen Shu - Laguna Niguel CA, US

International Classification:

A61F002/16

US Classification:

623/006340, 623/006370

Abstract:

A high gain lens system for implant into the capsular bag after removal of the natural crystalline lens. A preferred embodiment of the invention comprises a combination of a positive or convex lens and a negative or concave lens. These two lenses are spaced from one another and their relative spacing and respective focal lengths determine their combined focal length. When the lens system is inserted into the capsular bag, two opposed haptic flanges on each side, extend toward the inner radial edge of the bag adjacent the ciliary muscles. When the muscles contract, the bag is stretched thereby compressing the haptic flanges together or at least toward one another. This action cause the two lenses to separate further from each other and the increased spacing between the positive and negative lenses shortens the focal length to permit focusing of objects at near distances. On the other hand, when the muscles relax, the bag relaxes also, the haptic flanges separate and the lenses come closer together. The reduced spacing between the positive and negative lenses, increases the focal length to permit focusing of objects at far distances.

US Patent:

20080062839, Mar 13, 2008

Filed:

Apr 2, 2007

Appl. No.:

11/695369

Inventors:

Mark Worthington - Irvine CA, US
Stephen Shu - Laguna Niguel CA, US
Kevin McIntyre - Irvine CA, US

International Classification:

G11B 11/03

US Classification:

369053310

Abstract:

An optical disc system includes a photo detector circuit of an optical disc drive and a signal processing system. The photo detector circuit is configured to generate at least one information-carrying signal from an optical disc assembly. The signal processing system is coupled to the photo detector circuit to obtain from the at least one information-carrying signal both operational information used to operate the optical disc system and data indicative of presence and/or characteristics of an investigational feature associated with the optical disc assembly. Methods and discs for imaging a biological or medical investigational feature are also provided.

US Patent:

50500210, Sep 17, 1991

Filed:

Mar 16, 1990

Appl. No.:

7/495034

Inventors:

Stephen K. Shu - Fountain Valley CA
John A. Rawson - Orange CA
Robert C. Beauchamp - Westminster CA

Assignee:

Del Mar Avionics - Irvine CA

International Classification:

G11B 511

US Classification:

360 95

Abstract:

A micro cassette recorder-player is disclsoed having capactity for increased signal-to-noise ratio by utilizing a mobile capstan which pulls tape out of a micro cassette and across an enlarged head placed distal to and shielded from all electric motors, solenoids, and inductors which typically create spurious electric and magentic flux fields that traditionally diminish S/N.

US Patent:

41575717, Jun 5, 1979

Filed:

May 20, 1977

Appl. No.:

5/798765

Inventors:

Stephen K. Shu - Fountain Valley CA

Assignee:

Del Mar Avionics - Irvine CA

International Classification:

G11B 500

US Classification:

360 8

Abstract:

Apparatus under control of an operator for selectively displaying signals stored on a magnetic tape. The tape is normally first played back at a high speed, with the reproduced signal displayed at high speed to permit the operator to determine which parts of the tape to view at real-time speed. In the real-time viewing mode, a segment of the tape is played again at high speed to provide a better quality signal; the signal from the segment is converted to digital form and stored in a memory for use in creating a real-time display. The operator then can view the display of the stored signal in a variety of ways: stationary, advancing at real-time speed, or in reverse at real-time speed. The length of the segment stored is relatively short to minimize the size of the memory. After a segment is played back, the tape is brought to a stop and then moved in the opposite direction to position it for playing back the next segment.