Computer graphics processing and selective visual display system – Plural physical display element control system – Segmented display elements
Patent
1993-10-07
1995-05-30
Brier, Jeffery
Computer graphics processing and selective visual display system
Plural physical display element control system
Segmented display elements
345 34, G09G 336
Patent
active
054206006
ABSTRACT:
An IC for use in an IC apparatus for providing a timed drive of a display matrix, the display matrix displaying a multi-place text composed of at least one of letters, figures and other characters, and the display matrix having more columns than lines in order to display at least 1-line text. A plurality of identically structured ICs form a chain of such ICs that supply column signals for controlling the columns of the display matrix. Each IC has at least a shift register, a character generator and or read-only memory. The shift register into which bits are shifted which correspond to at least a section of text to be displayed on the display matrix has an input and an output operatively connected to an input pin and an output pin, respectively, of the IC. The character generator is connected downstream of the shift register, the character generator having a separate memory unit, and during operation, the character generator converting into output signals at least some of the bits, which correspond to only a short code for the contents of relevant characters by means of the memory unit which is addressed by these bits. The read-only memory stores bits which are required for different displays and which are to be loaded into shift registers of further ICs and which transmits the relevant bits to the shift register of this IC when a relevant address or start address is called up. During operation only the read-only memory of the first IC of the chain, that transmits to the shift register of this first IC, also transmits bits to a shift register of a next, further IC, and during operation the shift registers of the further ICs of the chain are loaded by a respective shift register of a respective preceding IC of the chain.
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Forster Robert
Gotz Max
Strobel Karl-Heinz
Brier Jeffery
Siemens Aktiengesellschaft
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