Drive circuit for displaying seven-segment decimal digit

Details Drive circuit for displaying seven-segment decimal digit Drive circuit for displaying seven-segment decimal digit

1996-03-27

1997-12-30

Powell, Mark R.

Computer graphics processing and selective visual display system

Plural physical display element control system

Segmented display elements

345 33, 345 38, 368 84, G09G 314

Patent

active

057036071

ABSTRACT:
A drive circuit for displaying the partition symbol intermittently comprising at least a pair of buffers, a plurality of display units of seven-segment, a partition symbol display buffer, a control circuit, a display unit of partition symbol, is provided. The pair of buffers store a set of signals. Each of the plurality of display units of seven-segment includes a first display portion and a second display portion, and, responsive to the set of signals, the first display portion and the second display portion are enabled to display. The partition symbol display buffer has an output value. The control circuit resets and sets the partition symbol display buffer in accordance with a predetermined manner. The display unit of partition symbol, in response to the output value, displays the partition symbol intermittently.

REFERENCES:
patent: 3802182 (1974-04-01), Fujita
patent: 3855783 (1974-12-01), Luce
patent: 4064687 (1977-12-01), Kashio
patent: 4091609 (1978-05-01), Ishikawa et al.
patent: 4205516 (1980-06-01), Terao
patent: 4482894 (1984-11-01), Matsui et al.
patent: 4647924 (1987-03-01), Naqib
patent: 5396259 (1995-03-01), Pang et al.

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