G
PHYSICS
G
PHYSICS
G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G09G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
G09G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
G09G2360/00
Aspects of the architecture of display systems
G09G2360/00
Aspects of the architecture of display systems
G09G2360/14
Detecting light within display terminals, e.g. using a single or a plurality of photosensors
G09G2360/14
Detecting light within display terminals, e.g. using a single or a plurality of photosensors
G09G2360/145
the light originating from the display screen
G09G2360/145
the light originating from the display screen