Circuit arrangement for display boards having luminous elements arranged in a matrix
Patent
US-4134132-A
Inventor
MAGOS GABOR
SZALAI JOZSEF
Assignee
VILLAMOS BERENDEZES ES KESZULE
Country
United States
Dates
- Priority:1976/06/29
- Grant:1979/01/09
Description
This web page summarizes information in PubChem about patent US-4134132-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
Circuit arrangement for the shaded (gray-scale) displaying of images on display boards having individual luminous elements arranged in a matrix, wherein switching circuits of the luminous elements are connected to row and column bars, and each bar is coupled to a selecting circuit either directly or through a store element. Each switching circuit includes an analog memory, a comparator with a constant threshold level, and a power switch. The memory is preferably a capacitor which is connected -- over a switching element -- between the respective row bar and column bar. A function generator supplying a monotonously varying periodic signal is connected to the bars that are directly connected to the capacitors whereas a video-signal transmitter is connected to the bars that are linked to the switching elements.
1976/06/29
1977/06/01
1979/01/09
1979/01/09
MAGOS GABOR
SZALAI JOZSEF
VILLAMOS BERENDEZES ES KESZULE
United States
G09G3/00 (inventive)
H04N3/12 (inventive)
H04N5/66 (inventive, first)
G09F13/28 (inventive)
H03K17/735 (inventive)
H03K17/735 (inventive, first)
G09F13/28 (inventive)
H04N3/12 (inventive)
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