Charles E Stone

US Patent:

6577201, Jun 10, 2003

Filed:

Dec 17, 2001

Appl. No.:

10/023954

Inventors:

John C. Ho - Woodbury NY
Charles Stone - Kings Park NY
Thomas McClelland - Northport NY

Assignee:

Frequency Electronics, Inc. - Northport NY

International Classification:

H03L 706

US Classification:

331 16, 331 25, 331 66, 327156, 375376

Abstract:

A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.

US Patent:

6753737, Jun 22, 2004

Filed:

Mar 17, 2003

Appl. No.:

10/390557

Inventors:

John C. Ho - Woodbury NY
Charles Stone - Kings Park NY
Thomas McClelland - Northport NY

Assignee:

Frequency Electronics, Inc. - Mitchel Field NY

International Classification:

H03L 706

US Classification:

331 16, 331 25, 331 66, 327156, 375376

Abstract:

A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.

US Patent:

53574281, Oct 18, 1994

Filed:

Apr 5, 1993

Appl. No.:

8/042821

Inventors:

Charles L. Stone - Darien CT

Assignee:

Micro-Tek, Inc. - Westport CT

International Classification:

G06F 1542
A61B 504

US Classification:

36441305

Abstract:

A system for mapping and/or displaying spatio-temporal features of underlying event-related neural activity involves measuring the event-related evoked potential values at a limited number of points over the region of interest, deriving a first grid of potential values at points over the area of interest representing at least a tenfold increase in the number of points by a Kriging-type of spatial statistical interpolation, and using the first grid to derive for the region of interest a second grid of points current density values by a Laplacian conversion. A plurality of second grids of current density values spaced apart in time are derived and displayed on a monitor in cartoon-type fashion to provide a cartoon-type display of the features of the event-related evoked response over the region of interest varying with time. Various other displays are possible for highlighting specific features.

US Patent:

52474364, Sep 21, 1993

Filed:

Sep 20, 1991

Appl. No.:

7/763862

Inventors:

Charles L. Stone - Darien CT

Assignee:

Micro-Tek, Inc. - Westport CT

International Classification:

G06F 1542
A61B 504

US Classification:

36441305

Abstract:

A system for mapping and/or displaying spatiotemporal features of underlying event-related neural activity involves measuring the event-related evoked potential values at a limited number of points over the region of interest, deriving a first grid of potential values at points over the area of interest representing at least about a five fold increase in the number of points by a Kriging-type of spatial statistical interpolation, and using the first grid to derive for the region of interest a second grid of points of current density values by a Laplacian conversion. A plurality of second grids of current density values spaced apart in time are derived and displayed on a monitor in cartoon-type fashion to provide a cartoon-type display of the features of the event-related evoked response over the region of interest varying with time. Various other displays are possible for highlighting specific features.