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PCE
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DIFF Subgroup
H03M 11/26

using opto-electronic means

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys > using opto-electronic means

CPC:

Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys (keyboard switch arrangements, structural association of coders and keyboards H01H13/70, H03K17/94) > using opto-electronic means

No child classifications to compare. This is a leaf node in both IPC and CPC.