Oki Electric Industry Co., Ltd.

Elo Touchsystems, Inc.

Masao Takeuchi

Joel Christopher Kent

Robert J Adler

Akihiko Fujisawa

Keiko Takahashi

Makoto Morito

Shigeki Kambara

Hiroshi Kaneda

Yukio Tabei

Bruce W Maxfield

An acoustic touch sensing device, comprising a substrate, having a surface; and an acoustic wave transducer, transducing a bulk wave in said substrate propagating through said substrate along an axis intersecting said surface, wherein energy of said bulk wave is coupled to a wave having a converted wave mode with appreciable energy at said surface and propagating along said surface. The device may include a set of scattering centers to couple the bulk wave to a Rayleigh wave or plate wave. The Rayleigh wave or plate wave may be dispersed over a region of the substrate, and analyzed to detect a perturbation indicative of a position of touch.

Grating transducer for acoustic touchscreens

In a speech recognition system for effecting substantially linear matching, a start point of an input speech pattern is detected to start counting the frames of the input speech pattern for updating a speech frame number. Each time the speech frame number is updated, a plurality of frame numbers of reference templates are generated in substantially a linear relationship to the frame number, thus providing a plurality of matching paths between each of the reference templates and the input speech pattern. The distance between the input pattern data and the reference template data between the corresponding frames specified by each matching path is calculated each time the speech frame number is updated. An accumulated value of the distances along a matching path from the start point of the input speech until a desired speech frame is regarded as a dissimilarity, and the dissimilarity corresponding to each matching path in each reference template is calculated each time the speech frame is updated. The number of the reference template which gives a minimum dissimilarity is detected and stored. At the time of confirming an end of the input speech, the number of the reference template with the minimum dissimilarity is determined to be the recognized result of input speech.

Apparatus and method for recognizing speech

Growing community of inventors

Tokyo, Japan

Masao Takeuchi