Circuit for driving a multiple-element display

Details Circuit for driving a multiple-element display Circuit for driving a multiple-element display

G - Physics

09

G

375/37

G09G 3/14 (2006.01)

Patent

CA 1271859

Abstract A circuit for driving a display device having n display elements, where n is a positive integer greater than one, comprises a device for providing a repetitive digital signal having a predetermined sequence of n digital values. The digital signal is converted to analog form in accordance with a predetermined transfer function and the resulting analog signal is compared with a second signal. A display enable signal is generated in the event that the magnitude of the analog signal bears a predetermined relationship to the magnitude of the second signal. A decoder circuit has a plurality of output terminals at which n distinct output signals, corresponding respectively to the n digi- tal values, can be provided. The decoder circuit is responsive to the display enable signal for providing one of the n output signals when it receives the corresponding one of the n digital values.

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