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DIFF Main Group
H03M 11/00

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)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys

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)

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

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)

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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  • H03M 11/003 CPC only CPC only
  • H03M 11/006 CPC only CPC only
  • H03M 11/20 Dynamic coding, i.e. by key scanning (H03M11/26 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
  • H03M 11/26 using opto-electronic means since 1990 IPC+CPC Available in IPC and CPC