Graphic display systems

Details Graphic display systems Graphic display systems

1987-06-29

1991-06-25

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34081503, 34081524, G09G 326, G04C 1700

Patent

active

050271121

DESCRIPTION:

BRIEF SUMMARY
This invention relates to improvements in graphic display systems.
The term graphic is defined to include sequences of any length made up from letters, words, numbers, idiographs, severally or in combination, symbols and artwork, in colour or in black and white, which can be defined by elements arranged in dot matrix form.
Australian Patent Specification No. 493435 (21004/76) has disclosed means whereby high definition graphics may be displayed using only a fraction of the picture elements necessary in prior systems. The previous invention capitalized on the fact, now established by scientific experiment, that the visual system of man can interpolate in space when visual mechanisms sensitive to motion are stimulated by stroboscopic sequences. Accordingly a viewer can be caused to see an entire image in motion when only fragments of it are displayed stroboscopically in sequences such as described in Patent Specification No. 493435 (21004/76).
The previous invention suffered from certain limitations and deficiencies, including: fragments of the image which were being displayed at any instant; axis orthogonal to the direction of motion of the image; than 12 vacant element sites between any two sequential picture elements adjacent to each other in the direction of motion of the image; and readily adapted for inclusion as an element in a network. graphics was severely impaired.
The object of the present invention is to provide a system or method in which some or all of the above limitations are substantially overcome.
In one form the invention resides in a display system for depicting a moving image of a graphic of the type hereindefined comprising: display area being defined by an array of elements arranged in the form of a matrix having a series of rows and columns, each element forming a cell of the matrix, said rows being arranged parallel to the intended direction of movement of said image and said columns being arranged orthogonal to said intended direction of movement; a first group of elements each having an image source associated therewith, to emit an image element being a portion of said graphic on activation thereof, said first group of elements located in selected rows of said matrix, wherein successive elements of said first group in the same row are spaced apart by one or more columns having blank elements in said same row which do not emit a said image element, and a second group of elements of similar formation to said first group of elements but located in other selected rows of said matrix, wherein said second group of elements are disposed in interlacing fashion relative to said first group such that one element of said second group is disposed intermediate to a pair of successive elements of said first group in an adjacent row to the row of said one element, and a cell occupied by an image source in one said group of elements partially overlaps with an immediately adjacent cell in the same column, said adjacent cell being defined by a blank element disposed in a row of another said group of elements; and said activating means being associated with each of said image sources to activate an image source in response to the generation of a corresponding electrical signal; and sequential groups, each set providing encoded data of a sample portion of said graphic to be represented by one column of said matrix at a prescribed instant, and successive groups of said sets providing further encoded data of successive sample portions of said graphic to be represented by said one column at successive prescribed instants, the period between successive prescribed instants being a display state period of said image, said encoded data being sequentially provided to be represented by successive columns of said matrix at said successive prescribed instants, wherein only those rows of image sources within a column of said matrix are activated for which an electrical signal has been generated in accordance with said encoded data.
Preferably, the image sources are arranged in discrete lines within selected colum

REFERENCES:
patent: 4090187 (1978-05-01), Kreinik
patent: 4112424 (1978-09-01), Lapeyre
patent: 4162493 (1979-07-01), Ross et al.
patent: 4240074 (1980-12-01), Gibson et al.
patent: 4344622 (1982-08-01), Nissim
patent: 4358761 (1982-11-01), Iwasaki
patent: 4365245 (1982-12-01), Colmenero
patent: 4449123 (1984-05-01), Muranaga

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