Canon Kabushiki Kaisha

Shinsuke Takeuchi

Takeshi Miyazaki

Kazuo Yoshinaga

Noriyuki Suzuki

Tetsuro Fukui

Hideaki Mitsutake

Akihiro Mouri

Masato Katayama

Kazuhiro Matsubayashi

Yoshio Takasu

Kazuo Isaka

Hajime Sakata

Tsunekazu Arai

Katsuya Oikawa

Disclosed are a pattern recognition method and apparatus which eliminate the complications of handwritten input by storing two or more patterns in memory beforehand, matching input patterns with the stored patterns, and delimiting and recognizing individual patterns from the input patterns based upon the pattern matching.

Segmentation of handwritten patterns using stroke and jump vectors

An optical wavelength multiplexing and demultiplexing device includes a first waveguide and a plurality of waveguides having different propagation constants. The first waveguide is caused to be coupled with the plurality of waveguides in different modes. The plurality of waveguides have different structures or different indices so as to provide different propagation constant from each another. According to the optical wavelength multiplexing and demultiplexing device, light components having various wavelengths and modes can be simultaneously multiplexed or demultiplexed.

Optical wavelength multiplexing and demultiplexing device for

A coordinate input apparatus includes a coordinate input member for inputting the coordinate value of an indicated position by pointing to a desired position with an indicating pen, a display device for displaying in dot form the indicated position of the indicating pen on the coordinate input member, an instruction device for instructing a calibration process for matching the coordinate systems of the coordinate input member and the display device, a correction parameter derivation device for deriving a correction parameter for matching coordinate systems on the basis of the indication by the indicating pen to a specific region of the coordinate input member when the instruction device has instructed, a coordinate value derivation device for deriving the coordinate value of the indicated position of the indicating pen to the specific region by using the correction parameter derived by the correction parameter derivation device, and a judgment device for judging the validity of the correction parameter according to whether or not the coordinate value derived by the coordinate value derivation device belongs to the specific region.

Coordinate input apparatus and calibration method for the same

In a multi-wavelength light detecting and/or emitting apparatus, there are provided of a first unit of a first directional coupler having a grating for an optical coupling function and a photodetector having a photoelectric conversion function and a second unit of a second directional coupler having a grating for an optical coupling function and a semiconductor laser, and a common light waveguide extending parallel with the unit in a light propagating direction. The first directional coupler and the photodetector are serially arranged in the light propagating direction and parallel with the common light waveguide, and the second directional coupler and the semiconductor laser are serially arranged in the light propagating direction and parallel with the common light waveguide. When there are formed a plurality of the first units and the gratings have different pitches, wavelength multiplexed light signals can be simultaneously detected per each wavelength with an equal detection performance. When there are formed a plurality of the second units and the gratings have different pitches, laser lights of different wavelengths can be emitted from a single emission end of the common waveguide and the semiconductor lasers can be independently driven.

Multi-wavelength light detecting and/or emitting apparatuses having

A photosensitive material comprises a photosensitive and heat-developable element, and further a light-to-heat conversion element or a nonlinear optical function element. The photosensitive and heat-developable element comprises at least a photosensitive silver halide, an organic silver salt and a reducing agent. The light-to-heat conversion element comprises at least one of an inorganic metal and an organic coloring matter. The nonlinear optical function element comprises a comprises a compound selected from the group consisting of an inorganic crystal, an organic crystal, a polymer, a polymeric liquid crystal, a polymeric composition and a polymeric liquid crystal composition. An image forming method employing the photosensitive material comprises the steps of imagewise exposing the material by use of a laser beam, heating the material and forming a polymer image on the material.

Photosensitive material and image forming method

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Yokohama, Japan

Shinsuke Takeuchi