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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.

1 Abstract

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.

2 Full Text

3 Important Dates

3.1 Priority Date

1976/06/29

3.2 Filing Date

1977/06/01

3.3 Publication Date

1979/01/09

3.4 Grant Date

1979/01/09

4 Inventor

MAGOS GABOR

SZALAI JOZSEF

5 Assignee

VILLAMOS BERENDEZES ES KESZULE

6 Country

United States

7 Patent Family

8 Classification

8.1 IPC

G09G3/00 (inventive)

H04N3/12 (inventive)

H04N5/66 (inventive, first)

G09F13/28 (inventive)

H03K17/735 (inventive)

8.2 CPC

H03K17/735 (inventive, first)

G09F13/28 (inventive)

H04N3/12 (inventive)

9 Citations

10 Cited By

11 Similar Patents

12 Information Sources

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