Daniel C Nelson

US Patent:

51213737, Jun 9, 1992

Filed:

Oct 25, 1989

Appl. No.:

7/426357

Inventors:

Mark A. Barton - Rochester NY
Daniel L. Nelson - Penfield NY
Gerald J. Smart - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G11B 2108

US Classification:

369 4428

Abstract:

Track jumping in the present system is accomplished by using a two step track jump method which accelerates the tracking actuator toward the desired track at maximum acceleration and then decelerates the tracking actuator at a maximum deceleration so that the desired track is reached in a minimum amount of time without the actuator ringing. A matrix containing the times for each jump pulse from track X to track Y is recorded. The matrix table is updated after each jump to compensate for variance factors. The table is stored in memory which allows the system to become more accurate with each jump. If the actuator falls short of the desired position, the jump pulse next applied is lengthened slightly. If the jump pulse causes the actuator to overshoot, the desired position the jump pulse is shortened for the next jump.

US Patent:

54405343, Aug 8, 1995

Filed:

Jan 10, 1994

Appl. No.:

8/179474

Inventors:

Clarke K. Eastman - Rochester NY
Daniel L. Nelson - Penfield NY
Gerald J. Smart - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G11B 709

US Classification:

369 4427

Abstract:

A method and apparatus for, in an optical data recorder, maintaining a recording light beam in an on-track position on a recording medium. In the apparatus an optical head has a tracking arrangement movable in a direction parallel to the recording medium for changing the tracking position of the recording light beam on the recording medium. The method comprises the steps of: i)detecting light reflected from the optical recording medium and producing a corresponding tracking error signal; ii) generating a mark formation effectiveness signal for each of a plurality of trial tracking positions, each mark formation effectiveness signal being associated with a given value of the tracking error signal; iii) determining the mark formation effectiveness signal corresponding to an on-track position and determining an on-track the value of the associated tracking error signal; and iv)during data recording periods, in response to the tracking error signal, adjusting the position of the movable tracking means so that the on-track value of the tracking error signal is maintained.

US Patent:

55616453, Oct 1, 1996

Filed:

Aug 21, 1995

Appl. No.:

8/517306

Inventors:

Clarke K. Eastman - Rochester NY
Daniel L. Nelson - Penfield NY
Gerald J. Smart - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G11B 709

US Classification:

369 4429

Abstract:

A method and apparatus for, in an optical data recorder, focusing a recording light beam on a recording medium. In the apparatus, an optical head has focusing means movable in a direction perpendicular to the recording medium for changing the focus position of the recording light beam on the recording medium. The method comprises the steps of: i) detecting light reflected from the optical recording medium and for producing a corresponding focus error signal; ii) generating a mark formation effectiveness signal for each of a plurality of trial focus positions, each mark formation effectiveness signal being associated with a given value of the focus error signal; iii) determining the mark formation effectiveness signal corresponding to an in-focus position and determining an offset value of the associated focus error signal; and iv) during data recording periods, in response to the focus error signal, adjusting the position of the movable focusing means so that the value of the focus error signal is maintained at the offset value.

US Patent:

51213745, Jun 9, 1992

Filed:

Oct 25, 1989

Appl. No.:

7/426356

Inventors:

Mark A. Barton - Rochester NY
Daniel L. Nelson - Penfield NY
Gerald J. Smart - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G11B 2110

US Classification:

369 4429

Abstract:

The present method operates upon an optical disk type servo-system of the type having an optical tracking servo for maintaining a lens centered over a track on a disk and a tracking position servo for moving an optical head's lens to a desired position. Included within such a system is an eccentricity sub-system for providing a compensating sine wave signal for reducing errors in tracking due to disk decentering. The present method automatically adjusts the gain in one of the servos to match the gain appearing in the other servo so as to improve the smoothness of control when switching between the servos.

US Patent:

50200453, May 28, 1991

Filed:

Dec 19, 1988

Appl. No.:

7/286094

Inventors:

Gerald J. Smart - Penfield NY
Daniel L. Nelson - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G11B 700

US Classification:

369 4429

Abstract:

A focus acquisition servo system and method which speeds the acquisition process by focusing on the recording media of an optical disk while the disk is coming up to speed. Focus is accomplished by jumping the focus actuator from a start position close to the focus position and by ramping the focus actuator away from the surface of the disk while monitoring focus gain. When the focus gain reaches a peak amplitude the disk is in rough focus, ramping is stopped and the focus servo system is activated to lock the focus actuator onto a fine focus on the disk's recording media.

US Patent:

20190220449, Jul 18, 2019

Filed:

Mar 25, 2019

Appl. No.:

16/363859

Inventors:

- Austin TX, US
Peter J. Pickerill - Austin TX, US
Robert E. Reeves - Austin TX, US
Daniel P. Nelson - West Lake Hills TX, US

International Classification:

G06F 16/21

Abstract:

Database servers may maintain a database according to a database schema. A database change management system can include a profile service configured to collect database profile information and a simulation service configured to receive a set of changes to be simulated for the database and simulate an application of the set of changes to the database. A forecast service can be configured to receive a result of a simulation from the simulation service and database profile information and generate a report indicative of a prediction of a failure or success of an implementation of the set of changes.

US Patent:

20160179499, Jun 23, 2016

Filed:

Feb 26, 2016

Appl. No.:

15/054710

Inventors:

- Houston TX, US
Daniel P. NELSON - Austin TX, US

International Classification:

G06F 9/445
H04L 29/08

Abstract:

Embodiments described herein provide systems and methods for installing or otherwise supporting applications in a cloud environment and systems and methods for provisioning a cloud environment. One embodiment includes abstracting a set of configuration information associated with a first environment into a set of environment independent attributes and a set of environment dependent attributes. A second environment may then be configured using the mapped environment independent attributes and the values for the set of environment dependent attributes. If the second environment is a cloud environment, embodiments described herein can include provisioning the cloud environment by mapping hardware and/or software characteristics of the first environment and/or user selected characteristics to abstractions of the characteristics and sending API calls to a cloud environment interface based on the abstractions of the characteristics to provision a selected target environment in the cloud environment.

US Patent:

20150066340, Mar 5, 2015

Filed:

Aug 30, 2013

Appl. No.:

14/014579

Inventors:

Daniel K. Nelson - Round Rock TX, US

Assignee:

SIEMENS INDUSTRY, INC. - Alpharetta GA

International Classification:

G08G 1/081

US Classification:

701117

Abstract:

Embodiments include a method for single cycle offset adjustment for a traffic signal includes receiving a current signal control plan and a new signal control plan. The method also includes calculating an offset between the current signal control plan and a new signal control plan and determining if the offset is less than a threshold percentage of a cycle length of the new signal control plan. If the offset is less than a threshold percentage of the cycle length, the method includes reducing a time period of each phase of a next cycle of the new signal control plan. If the offset is greater than the threshold percentage of the cycle length, the method includes increasing the time period of each phase of the next cycle of the new signal control plan. The method also includes executing the new signal control plan.