David Kenney Towner
Engineers at Red Stone Dr, Boise, ID

7271822, Sep 18, 2007

Oct 28, 2004

10/978014

David Kenney Towner - Boise ID, US

Hewlett-Packard Development Company, L.P. - Houston TX

B41J 2/435

347234, 347248

Systems and methods are described for stitching multiple images together in a printer to form a single, seamless, composite image. The use of multiple laser sources and multiple scan lenses with one or more scanner assemblies and various image stitching methods achieves seamless image stitching in a manner that provides benefits over prior printers using single laser sources and single scan lenses. Such benefits include, for example, a wider image format, smaller optical spot size, reduced cost, and reduced overall size for the printer.

7701836, Apr 20, 2010

Aug 9, 2006

11/416589

Daniel Y. Abramovitch - Palo Alto CA, US
David K. Towner - Boise ID, US

Hewlett-Packard Development Company, L.P. - Houston TX

G11B 7/24

3692754

An optical disk structure and optical disk recorder which enables data to be re-written onto the recording layer of the optical disk. A clock reference structure is permanently formed along servo tracks of the optical disk. An optical transducer is coupled to the clock reference structure and generates a clock reference signal simultaneously with writing new data onto the recording layer of the optical disk. The data is written as data marks along the servo tracks. Each of the data marks includes edges. The edges of the data marks are recorded in synchronization with a write clock. The write clock is phase-locked with the clock reference signal. Therefore, the edges of the data marks are aligned with the clock reference structure with sub-bit accuracy. Standard DVD-ROM disk readers are not able to detect the high spatial frequency of the clock reference structure. Therefore, the optical disk structure and optical disk recorder of this invention allow production of re-writable optical disks which can be read by standard DVD-ROM disk readers.

RE43788, Nov 6, 2012

Mar 16, 2010

12/725099

Daniel Y. Abramovitch - Palo Alto CA, US
David K. Towner - Boise ID, US

Hewlett-Packard Development Company, L.P. - Houston TX

G11B 7/00

369 4728, 369 592

An optical disk structure and optical disk recorder which enables data to be re-written onto the recording layer of the optical disk. A clock reference structure is permanently formed along servo tracks of the optical disk. An optical transducer is coupled to the clock reference structure and generates a clock reference signal simultaneously with writing new data onto the recording layer of the optical disk. The data is written as data marks along the servo tracks. Each of the data marks includes edges. The edges of the data marks are recorded in synchronization with a write clock. The write clock is phase-locked with the clock reference signal. Therefore, the edges of the data marks are aligned with the clock reference structure with sub-bit accuracy. Standard DVD-ROM disk readers are not able to detect the high spatial frequency of the clock reference structure. Therefore, the optical disk structure and optical disk recorder of this invention allow production of re-writable optical disks which can be read by standard DVD-ROM disk readers.

6046969, Apr 4, 2000

Mar 17, 1998

9/040142

David K. Towner - Boise ID
Josh N. Hogan - Los Altos CA

Hewlett-Packard Company - Palo Alto CA

G11B 700

369 48

A system and method for generating a write clock for writing data along servo tracks of an erasable/rewriteable optical disk utilize clock patterns that correspond on a one-to-one basis to designated data zones on an optical disk. The clock patterns are located in one or more clock tracks and are dedicated to providing reference clock information. In one embodiment, an optical disk is divided radially into constant angular velocity (CAV) data zones and corresponding circular clock tracks are located near the outer edge of the disk. The circular clock tracks correspond on a one-to-one basis to the CAV data zones, and the unique clock patterns within the clock tracks are utilized to generate write clock signals. Clock information is read by a dedicated reference clock transducer and data is written to and read from a servo track of an optical disk by a read/write transducer. An optical disk drive equipped with the reference clock transducer and the read/write transducer also contains a clock circuit that receives reference clock signals and generates write clock signals.

5070493, Dec 3, 1991

May 22, 1989

7/355738

Daniel R. Marshall - Boise ID
David K. Campbell - Boise ID
Bernard W. Bell - Boise ID
David K. Towner - Boise ID

Hewlett-Packard Company - Palo Alto CA

G11B 700, G00J 120

369112

An optical assembly incorporating a wedge-shaped optically transparent prism, a 45 degree right isosceles triangular prism which has two thin film coated surfaces, a rhomboidal prism attached to the triangular prism, a second, smaller 45 degree right isosceles triangular prism attached to one end face of the rhomboidal prism and two planoconvex lenses attached to the combination of the rhomboidal and second triangular prisms is mounted within a housing. All of the optical components are cemented to the adjacent component utilizing a transparent optical cement to form an integral unit. Data and servo detector assemblies and a diode laser light source are mounted on the external surfaces of the housing to form a stationary optical assembly which provides the following functions: generates a collimated beam of light whose power output may be modulated electronically to perform read, write and erase functions; generates an electrical data signal derived from a portion of a returning light beam; and generates suitable electrical error signals for servomechanical control of radial and axial motion of a focused light spot on information storage media.

8085289, Dec 27, 2011

Oct 24, 2008

12/258092

Dror Kella - Nes-Ziona, IL
Michael Plotkin - Rehovot, IL
Shai Emanueli - Rehovot, IL
Boris Aptekar - Rehovot, IL
Haim Livne - Kfar-Sava, IL
Haim Vladomirski - Rehovot, IL
David Kenney Towner - Boise ID, US

Hewlett-Packard Development Company, L.P. - Houston TX

B41J 15/14, B41J 27/00

347241, 347256

An optical beam is selectively output towards a scanner in accordance with image data for a scan line of an image. The optical beam has a beam irradiance distribution that is elliptical in shape. The optical beam passes through an aperture stop, ordinarily creating side lobes within a focus irradiance distribution of the optical beam. The scanner scans the optical beam to form the scan line on a photosensitive surface by selectively exposing positions along the scan line in accordance with image data. The optical beam is modified before it reaches the photosensitive surface to substantially remove the side lobes that have been created within the focus irradiance distribution and/or to substantially prevent the side lobes from being created within the focus irradiance distribution of the optical beam.

2008019, Aug 21, 2008

Feb 21, 2007

11/709394

Michael Plotkin - Rehovot, IL
David Towner - Boise ID, US
Haim Livne - Kfar-Sava, IL
Peter Gysling - New Plymouth ID, US
Craig Breen - Rehovot, IL
Dale Wolin - Boise ID, US

G02B 5/18

359566, 359565

An anamorphic optical element and an adjustment mechanism for selectively rotating the optical element either around an axis substantially in a vertical direction, an axis substantially in an optical axis direction, an axis substantially in a plane formed by the vertical direction and the optical axis direction, or combination of axes thereof is used to vary a vertical separation between two or more spots.

2007009, May 3, 2007

Oct 31, 2005

11/263327

Daniel Marshall - Boise ID, US
David Towner - Boise ID, US

G11B 7/00

369116000

Disclosed are various systems and methods for generating a data signal. In one embodiment, a system is provided that comprises a laser with a gain medium, the laser being configured to emit optical power. The laser is further configured to receive an external optical feedback optically coupled into the gain medium from an optical medium. The external optical feedback is modulated by data embodied in the optical medium. A circuit generates the data signal corresponding to the data based upon a variation in the optical output power of the laser due to the external optical feedback directed into the gain medium of the laser.

7460146, Dec 2, 2008

Oct 28, 2004

10/978078

David K. Towner - Boise ID, US

B41J 27/00, B41J 2/47, B41J 2/435

347259, 347234, 347248

Systems and methods are described that dynamically correct field curvature and other focus errors in imaging systems that use rotating scanners to scan an image field. The dynamic correction controls the focusing of an image field such that focus is maintained across the width of a photosensitive element as a rotating scanner scans the field. The described systems and methods enable the use of post-objective scanning configurations in which the complexity and expense of objective lenses is significantly reduced.

2003009, May 29, 2003

Nov 29, 2001

09/995776

David Towner - Boise ID, US
Ben Tyson - Eagle ID, US
Laurent Regimbal - Round Rock TX, US
Lori Clifton - Boise ID, US

G03F003/08

358/520000

A method of varying gloss in hard copy output from a hard copy output engine includes providing a user with a user-adjustable control for varying hard copy output gloss and varying at least one processing parameter in producing the hard copy output in response to user adjustment of the user-adjustable control to provide a first user-selected gloss level over a first portion of a page of hard copy output.