Steven M Rogers

US Patent:

20040179462, Sep 16, 2004

Filed:

Mar 10, 2003

Appl. No.:

10/385242

Inventors:

Robert Freedman - Culver City CA, US
Steven Rogers - Los Angeles CA, US
Ruben Marquez - Canyon Country CA, US

Assignee:

NATIONAL FILM LABORATORIES, INC. dba CREST NATIONAL

International Classification:

G11B007/24

US Classification:

369/275400

Abstract:

The invention pertains to an optical disc having increased storage capacity that provides sufficient signals for readability in a majority of players. Pursuant to a first aspect of the invention, acceptable cross-talk levels and increased storage capacity are achieved by decreasing track pitch and pit width. Pit width is decreased based in part on the amount the track pitch has been decreased, and in part on cross-talk levels that are produced by the optical disc when scanned in a majority of players. Pursuant to a second aspect of the invention, acceptable data signals, acceptable tracking signals, and increased storage capacity are achieved by decreasing the pit lengths and by selecting a pit depth. The pit depth is selected based in part on the pit lengths, and based in part on the data signals and the tracking signals produced by the optical disc when scanned in a majority of players. Pursuant to a third aspect of the invention, a cross sectional shape of the pits is selected so that the cross sectional shape increases tracking signals produced by the optical disc when the disc is read in a majority of players.

US Patent:

20170057857, Mar 2, 2017

Filed:

May 5, 2016

Appl. No.:

15/146953

Inventors:

- Crane IN, US
Craig A. MacDougall - Norco CA, US
Steven J. Rogers - Phelan CA, US
Robert A. Heller - Corona CA, US
Matthew P. Khalil - Corona CA, US
Matthew T. McCormick - Angelus Oaks CA, US
Dylan R. Switzer - Riverside CA, US

International Classification:

C03B 19/10
B22D 25/00

Abstract:

Apparatuses and methods of forming hollow spheres are provided. Hollow sphere forming apparatus incorporate a bubble forming nozzle assembly in which outlets for gas and liquid materials are disposed substantially coaxially. The relative positions of the gas and liquid outlets are adjustable in at least one dimension (e.g., axially, radially or angularly relative to each other), such that a more uniform annular exit region for the gas and liquid outlets may be configured, such that more symmetric bubbles may be formed thus reducing the rejection rate in solidified bubbles due to asymmetry or decentering of entrapped gas.