Patent · US Active

Method and assembly for checking the operating mode of a screen

US11355074B2 · kind B2 · utility

1Cited by

3References

9Claims

0Family size

Assignee

siOPTICA GmbH · DE

Inventors

André Heber · Weimar, DE
Ambrose Peter Nari · Jena, DE
Markus Klippstein · Jena, DE
Uwe Schroeter · Naschhausen, DE

Key dates

Filing date	Jun 3, 2019
Grant date	Jun 7, 2022
Priority date	—
Expiry date	Jun 3, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG09G2360/145
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for checking an operating mode of a display screen switchable between a free-viewing operating mode B1 and a restricted-viewing operating mode B2, comprising: in operating mode B2, determining a brightness value H of a surface and/or edge of a transparent light guide; then, depending on the brightness value H: i) unchanged use of operating mode B2 if the brightness value lies within a range of specified Hg values; ii) switching off operating mode B2 if the brightness value lies within a range of specified Hs values; or iii) changed use of operating mode B2 if the brightness value lies within a range of specified Hm values, with the control unit exerting an influence on the image content perceptible on the display screen by reducing the latter's brightness and/or contrast, with the range Hm lying between the ranges Hs and Hg, and with the ranges bordering on each other.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.