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PCE
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DIFF Subgroup
H03K 17/968

using opto-electronic devices

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Electronic switching or gating, i.e. not by contact-making and -breaking > characterised by the way in which the control signals are generated > Switches controlled by moving an element forming part of the switch > using opto-electronic devices

CPC:

Electronic switching or gating, i.e. not by contact-making and –breaking (gated amplifiers H03F3/72; switching arrangements for exchange systems using static devices H04Q3/52) > characterised by the way in which the control signals are generated > Switches controlled by moving an element forming part of the switch > using opto-electronic devices

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • H03K 17/969 having a plurality of control members, e.g. keyboard since 1985 IPC+CPC Available in IPC and CPC