When a large number of bar-shaped display elements are installed at a site in any of various situations, even if the distances between the bar-shaped display elements are not necessarily fixed, an image of an aspect ratio which is correct over an entire screen can be displayed without distorting the displayed image. Data distribution means includes means for storing a standard value set corresponding to a standard arrangement distance of the bar-shaped display elements Bi as an interval control variable, and means for storing a correction value set for a particular bar-shaped display element B8 arranged in a displaced condition from the standard arrangement distance, and selectively extracts image data for one column to be distributed to each of the bar-shaped display elements B1 to B10 based on the standard value and the correction value.

A display apparatus includes a pedestal, a cylindrical display body rotatably mounted on the pedestal, a plurality of light emitting lines composed of a plurality of units, each line being equidistantly and axially arranged on a wall of the display body for displaying information when the display body rotates, a control circuit mounted on the display body for controlling a rotating speed of the display body and the information displayed on the display apparatus, and a power supply having a positive electrode and a negative electrode provided within the pedestal for providing the power required by the apparatus.

A definite multiple color image of a large size is scrolling displayed with a small number of light emitting cells. A physical screen which includes sixteen (16) dots in one column and thirty (30) dots in one row is formed from ten (10) light emitting cell column sets Si (RCi, GCi, BCi) connected to each other like a belt. The physical screen is regarded as an imaginary screen which includes sixteen (16) dots in one column and fifty seven (57) (=30+3.times.9) dots in one row. When the red light emitting cell column RCi in a certain light emitting cell column set Si is controlled and driven with red data for a certain column (k) selected at intervals, the green light emitting cell column GCi is controlled and driven with green data for an adjacent column (k+1) to the selected column (k), and the blue light emitting cell column BCi is controlled and driven with blue data for a further adjacent column (k+2).

A scrolling display system has a plurality of light emitting cell array segments, each being consisted of a given number of light emitting cells arranged in alignment with a given dot interval, the plurality of light emitting cell array segments being arranged in one of column and row directions in spaced apart relationship for forming a display plane, an interval of adjacent light emitting cell array segments being greater than the given dot interval, an image memory storing an image data to be displayed on the display plane, the image data containing pixel information for all pixels to form dot matrix on the display plane with the given dot interval in column and row directions, and a display controller reading out data fractions of the image data corresponding to respective of light emitting cell array segments and supplying the data fractions to respective light emitting cell array segments for driving light emitting cell array segments, the display controller controlling shifting of display image in the one of column and row directions for adjusting scroll speed depending upon the interval between adjacent light emitting cell array segments.

A device and method of displaying images using an afterimage caused by an optical illusion is disclosed In the device, a controller processes image data output from an image processing unit, thus generating an image display control signal and a motor control signal. A drive motor unit rotates a rotary display assembly at a speed in response to the motor control signal. A plurality of display units, individually designed to emit light beams at multi-angles, are orderly mounted on the rotary display assembly. The display assembly is rotated at a speed by the drive motor unit in response to the motor control signal while displaying images on the display units at multi-angles in response to the image display control signal, thus forming desired images due to an afterimage caused by an optical illusion.