Frank W Sinden

6580826, Jun 17, 2003

Feb 28, 2000

09/514835

Frank William Sinden - Princeton NJ

Lucent Technologies Inc. - Murray Hill NJ

G06K 948

382187, 382198

A method for encoding handwritten symbols operates upon penstroke data received from a device capable of sampling a stylus position at discrete intervals. Each handwritten symbol is segmented into an ordered sequence of discrete strokes. An are length and initial and final tangent angles are evaluated for each of these strokes. Each stroke is encoded in the form of a parameter set comprising position coordinates of the initial and final endpoints of the stroke, the arc length, and the initial and final tangent angles. In specific embodiments of the invention, the segmentation is based, in part, on properties of the handwritten symbol when it is expressed as a curve (s), wherein s represents arc length and represents the net turning angle.

7637221, Dec 29, 2009

Feb 27, 2009

12/380426

Frank W. Sinden - Princeton NJ, US

B63H 9/10

114 90, 114 3924, 114 3929, 114 3932, 11410216

A sailboat has a preferably solid hull with lateral and longitudinal symmetry, a centrally located ring-shaped seat secured to a central portion of the top of an hull, a selectively rotatable carousel being mounted about an outer circumferential wall of said ring-shaped seat, a frame being secured to said carousel for retaining a pair of spaced apart identical sails that slant inward toward one another, a pair of removable selectively rotatable cylindrical booms being positioned on the frame with an associated halyard system for controllably furling and allowing easy reefing of the pair of sails, a pair of selectively removable rotatable hydrofoils each serving as a rudder and centerboard projecting downward from the bottom of and proximate the ends of the hull, a steering wheel being secured to the hull at the center of the ring-shaped seat and linked to each of the hydrofoils, whereby the carousel can be selectively rotated to position the sails at any desired angular position relative to the direction of the wind, without interfering with crew members who sit facing inward on the ring-shaped seat. Color-coded spaced-apart markings about a top circular portion of the carousel, relative to stripes applied to the top of the seat, show at a glance the angle of the frame to the seat, representative of the angle of the sails to the hull.

56255756, Apr 29, 1997

Aug 3, 1993

8/100906

Suresh Goyal - Chatham NJ
Elliot N. Pinson - Watchung NJ
Frank W. Sinden - Princeton NJ

Lucent Technologies Inc. - Murray Hill NJ

G06F 1700

364578

Apparatus for modelling or simulating the dynamics of interacting rigid bodies. In the apparatus, the rigid bodies are represented as convex polyhedra. Contacts between the bodies are modelled as contacts between a face and a vertex or between edges. All other types of contact are reduced to these types. The beginning or end of a contact is determined by means of linear interpolation. The dynamics of the contacts are modelled as contacts between massless rigid surface elements which are connected by massless viscous layers to the objects. The viscous layer connecting a surface element to its object permits the surface element to move either perpendicular to or tangent to the plane of contact. The properties of the viscous layers determine the dynamics of the contacts. In the implementation, the properties are described by means of two systems of springs and dampers, one permitting motion in the perpendicular direction and the other motion in the tangential direction.

60441747, Mar 28, 2000

Oct 11, 1996

8/729463

Frank William Sinden - Princeton NJ

Lucent Technologies Inc. - Murray Hill NJ

G06K 900

382187

A method for encoding handwritten symbols operates upon penstroke data received from a device capable of sampling a stylus position at discrete intervals. Each handwritten symbol is segmented into an ordered sequence of discrete strokes. An arc length and initial and final tangent angles are evaluated for each of these strokes. Each stroke is encoded in the form of a parameter set comprising position coordinates of the initial and final endpoints of the stroke, the arc length, and the initial and final tangent angles. In specific embodiments of the invention, the segmentation is based, in part, on properties of the handwritten symbol when it is expressed as a curve. phi. (s), wherein s represents arc length and. phi. represents the net turning angle.

53332091, Jul 26, 1994

Mar 24, 1992

7/857198

Frank W. Sinden - Princeton NJ
Gordon T. Wilfong - Gillette NJ

AT&T Bell Laboratories - Murray Hill NJ

G06K 922

382 13

An unknown handwritten symbol written on a digitizing tablet is compared with symbols in a predefined "alphabet" or library of model symbols and the closest match chosen. Recognition is independent of the size, position or orientation of the symbols. The alphabet can be any collection of symbols, such as alphanumeric characters, ideograms or words in cursive script and is created by writing at least one example of each symbol on the tablet. A sequence of samples of the pen position is recorded while a symbol is being written. The samples form a vector, which is then translated so that the centroid of the symbol lies at an origin. The comparison, which can easily be done in real time, involves calculating a correlation factor from scalar products of the vector for the unknown symbol and two versions of the vector for each model symbol and choosing the model symbol having the highest correlation factor. If needed to distinguish between model symbols with similar correlation factors, the comparison can also include calculating a rotation factor from such vectors for use in making such choice. Embodiments of the invention can be configured that are user-independent, user-dependent or that evolve from one to the other.

58898891, Mar 30, 1999

Dec 13, 1996

8/766285

Frank William Sinden - Princeton NJ

Lucent Technologies Inc. - Murray Hill NJ

G06K 900
G06K 946
G06K 966
G06K 962

382187

A method is described for the automatic recognition of at least one handwritten symbol. A representation of such symbol is provided, in a data storage medium, as a sequence of one or more discrete strokes having respective initial and final endpoints, a spatial location and a tangent angle being associated with each endpoint. Representations of plural library symbols, each a prototype of a possible class to which the input symbol may be assigned, are retrieved from a data storage medium. A comparison between the input-symbol representation and each of the retrieved library symbol representations includes comparing the respective tangent angles of the input symbol with the corresponding tangent angles of at least some of the library symbols, and comparing the respective endpoint locations of the input symbol with the corresponding endpoint locations of at least some of the library symbols.

62087576, Mar 27, 2001

Oct 11, 1996

8/729466

Frank William Sinden - Princeton NJ

Lucent Technologies Inc. - Murray Hill NJ

G06K9/00

382187

A method and apparatus for reconstructing legible characters from stored data are described. For each of a plurality of handwritten strokes, a set of endpoint conditions is received. The endpoint conditions are data which define an initial and a final tangent angle for the stroke, and positions of an initial and a final endpoint of the stroke. For each set of endpoint conditions, an artificial stroke is constructed such that it satisfies the corresponding endpoint conditions and consists of at most three segments. Each of these segments consists of a straight line or an arc. Within any given stroke, lines and arcs may occur only in alternation.

49362364, Jun 26, 1990

Mar 20, 1989

7/325646

Frank W. Sinden - Princeton NJ

B63H 904

114 391

A fully symmetrical sailboat includes a mechanism that balances the moment of a sailor on a boom against the force of the wind on the sail in such a way that the hull remains level. The sailboat comprises a hull with both lateral and longitudinal symmetry and a rig consisting of a short, rotatable mast to which is attached by hinges a sail of symmetrical plan and a boom bearing a slidable seat. The rig as a whole can assume any angular position about a vertical axis. Under pressure of the wind, the foot of the sail can swing outward. The sail is mechanically linked to the seat boom so that its outward motion lifts the seat boom's outer end. The linkage is such that over a wide range of wind forces and regardless of the sailor's position along the boom, the rig as a whole exerts substantially no net moment on the hull. Foot operable rails are used to adjust the angle of the rig about the vertical axis, hence the angle of the sail to the wind. Steering is controlled by hand held reins connected to a symmetrical, linked pair of hydrofoils, which serve as both rudders and centerboards.