Abstract: Disclosed herein is a system for operating chirographic devices. The system may support a spatial chirographic sign reader, a spatial character recognition technique, a chirographic text character writer, a chirographic text character setter, a chirographic text character scanner, a spatial chirographic sign rendering technique, and a spatial chirographic styling sign marker. The system may include a central system unit having a real-time timer clock and bus connectors for chirographic input and output devices. Input device drivers may be adapted to collect spatial chirographic data and label samples with real-time data acquisition. Data may be transferred to chirographic applications of the system for character recognition, text setting, handwriting page scanning, sign styling, and image rendering to achieve specific chirographic effects.

Abstract: The present invention discloses spatial tracking of writing for interpretation of writing motion using three-dimensional position sensors to identify signs, symbols, or glyphs made by a writing stylus in real time. The present invention discloses an elongated pointing device capable of measuring angular directions in a plane and true geometrical distance measurement by tracking radial distance along a ray such that true Cartesian positions in the plane are capable of being tracked. A two-dimensional true geometry tracker may be applied twice. A first time to span the X-Y plane and then again on an orthogonal axis ensuring span in a three-dimensional volume. The tracker may form spherical or cylindrical spatial coordinates and may transform coordinates to Cartesian font coordinates. The present invention also discloses a platform capable of mounting the device for spatial tracking of a stylus.

Abstract: Disclosed herein is a configuration of a writing volume of a spatial chirographic reader facilitating an on-line method of recognition of handwriting characters. The writing volume may be partitioned by an ink depth into a positioning stereographic hemisphere and an inking stereographic hemisphere. Two projection spheres may be made to intersect on a projection typeface plane forming a disc encapsulating the writing volume. A center of the disc may be a universal reference point for converting handwriting movements of a stylus to inferred rotations. Characters may be mapped to reference rotations, wherein on-line reader data may be compared to effect identification of the characters. Labeling of cardinal positions and graduation of rotation paths may be configured such that inking strokes of a particular writing system may be observable in a minimal number of integer factors of rotation of ? radians.

Abstract: Disclosed herein is chirography system including a chirography stylus fitted with an ultrasonic transducer tip and a font frame reader employing sensors at reference points of a font coordinate system. The system may be provided with a symbol recognition module adapted to identify symbol path traces of the stylus as the stylus traces the path guided by a cue card for a handwritten symbol. The system may also include an output for affirming successful recognition of a spatial chirography symbol by audibly expressing the identified symbol when the recognition succeeds and/or audibly prompting for another attempt when the recognition procedure fails. The system may employ one of physical and electronic cue cards including symbols adapted to be traced during a learning session.

Abstract: Disclosed herein is a chirographic signal pulse-emitting source and chirographic reader system. In an embodiment according to the present invention, contact-free proximity sensors may replace mechanical sensors. Ultrasonic transducers emit position-signaling pulses from a tip of the signal pulse-emitting source. Ultrasonic sensors on a reader typeface frame receive the pulses (transmissions). Proximity may be determined from the duration of travel of a pulse. Also disclosed herein is a reader subsystem including at least two separate modules. The at least two separate modules may include a pulse transmitting unit for a hand-held part and a stationary typeface frame reader sensing and receiving unit. The method may provide multiple triangulation measurements from a sensor arrangement to sense a multi-dimensional direction of the signal pulse-emitting source. The method may also provide pulse-width resolution by averaging multiple triangulation measurements for each signal pulse.