Mitsubishi Denki Kabushiki Kaisha

Satoru Tomita

Toshihiko Hata

Mitsunori Adachi

Toshiharu Nozawa

Kaoru Horiuchi

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

In an image pickup apparatus according to the present invention, a rotary scanning mirror (2) is rotated to sense the image of an original (10) by a linear image sensor (4), which in turn outputs picture signals to be stored in a frame memory (5), so that the image of the original (10) is displayed on a display unit (6) on the basis of the stored picture signals. A light pen (9) specifies a scanned range of the image displayed on the display unit (6) and a controller (8) indicates rotation angles of the rotary scanning mirror (2) on the basis of position signals from the light pen (9) to specify the scanned range while varying the step size of the rotary scanning mirror (2) thereby to vary resolution. Thus, a noted region in the original (10) can be easily image-sensed in high resolution.

Image pickup apparatus with range specification of displayed image

A band compression apparatus for transmitting a video signal having three color component signals sampled at a sampling frequency of 2Fs and a gradation of N bits per picture element by a transmission path of a gradation of N bits per sample and a sample transmission frequency 2Fs includes a prefilter for restricting the band of each color component signal; a sub-sample circuit for compressing the respective band restricted color component signal to a sampling frequency Fs; a signal separation switching circuit for separating data of 3n bits comprising the upper n bits of the sub-sampled color component signals

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Hyogo, Japan

Satoru Tomita