Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Research Laboratories, Inc.

Toshihiko Hata

Satoru Tomita

Kaoru Horiuchi

Toshiharu Nozawa

Anthony Vetro

Hao-Song Kong

Mitsunori Adachi

Naoki Kuwahara

A method transcodes an image in the form of an encoded input bitstream. The input bitstream includes quality layers, each quality layer includes a resolution levels, each resolution level includes components, each component includes precincts, and each precinct includes a packet partition location, a header length, and a body length. The input bitstream is decoded partially to obtain a structure of the encoded input bitstream. Coordinates of a region-of-interest in the image are specified, and progressive parameters are defined. The partially decoded input bitstream is then encoded according to the structure, the coordinates, and the progressive parameters to obtain an encoded output bitstream.

Image transcoding

A character drawing apparatus makes reference to character drawing time data to carry out a pattern drawing process at drawing speeds controlled on the basis of the character drawing time data. Character drawing time intervals required respectively for drawing a plurality of characters can be changed simply by changing the character drawing time data so that the different characters are drawn respectively at different drawing speeds. Thus, the character drawing apparatus attracts effectively the attention of persons looking at characters being drawn and impresses effectively on such persons the information expressed by the characters being drawn.

Character drawing and displaying apparatus with drawing speed control

A contour filling apparatus comprising a display frame memory and a draft memory spatially corresponding thereto. A target shape to be displayed is filled inside by a draft filling means according to a suitable draft scan pattern. The filled shape is drawn in the draft memory. Scan coordinates specifying each dot in the draft memory and the display frame memory are generated in accordance with any of a plurality of previously provided scan patterns. If a dot specified by scan coordinates in the draft memory is found to be a dot filled by the draft filling means, that dot is drawn in the display frame memory where specified by the scan coordinates. The target shape is thus filled on a display screen of the apparatus in a desired scan pattern.

Video display apparatus for filling the interior shapes of contour

A coordinate input apparatus of the present invention in which operation is switchable from an image pickup mode for displaying on a display apparatus an image of an object for image-taking to a coordinate input mode for inputting coordinates at a location indicated by a point indicator and vice versa, so that when the coordinate input mode is set, the duration of scanning by an image pickup element is controlled shorter than that in the case of the image pickup mode being set, whereby the duration required for image pickup during coordinate input mode operation can be reduced and speedy processing can be achieved for coordinate inputting, and which is provided with an image processing circuit for optimum image processing with respect to image signals for images taken, so that images taken in short image pickup duration during coordinate input mode can be prevented from deterioration.

Coordinate input apparatus

An image describing apparatus for describing a coupling area for forming an image via a graphic command of polygonal shape or a circular arc. The apparatus includes a device for extracting area data of boundary point row in the coupling area, a device for approximating the boundary point row in a linear primitive or curve primitive of a circular arc, a device for dividing the curve primitive so that other area does not exist in the area of the graphic command corresponding to the curve primitive if other area exists in the area of the graphic command corresponding to the approximated curve primitive, and a device for coverting the approximate boundary into a graphic command of polygonal shape or circular arc and setting a preferential sequence to the command to form encoded data.

Growing community of inventors

Hyogo, Japan

Toshihiko Hata