G04G

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ELECTRONIC TIME-PIECES

Subclasses

SubclassTitle
3/00 Producing timing pulses (driving circuits for stepping motors G04C 3/14; producing preselected time intervals for use as timing standards G04F 5/00; pulse technique in general H03K; control, synchronisation, or stabilisation of generators in general H03L)
3/02 Producing timing pulses (driving circuits for stepping motors G04C 3/14; producing preselected time intervals for use as timing standards G04F 5/00; pulse technique in general H03K; control, synchronisation, or stabilisation of generators in general H03L) Circuits for deriving low frequency timing pulses from pulses of higher frequency (pulse frequency dividers in general H03K 23/00-H03K 29/00)
3/04 Producing timing pulses (driving circuits for stepping motors G04C 3/14; producing preselected time intervals for use as timing standards G04F 5/00; pulse technique in general H03K; control, synchronisation, or stabilisation of generators in general H03L) Temperature-compensating arrangements
5/00 Setting, i.e. correcting or changing, the time-indication
5/02 Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method
5/04 Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
7/00 Synchronisation
7/02 Synchronisation by radio
9/00 Visual time or date indication means
9/02 Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
9/04 Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes
9/06 Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
9/08 Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
9/10 Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes
9/12 Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
11/00 Producing optical signals at preselected times
13/00 Producing acoustic time signals
13/02 Producing acoustic time signals at preselected times, e.g. alarm clocks
15/00 Time-pieces comprising means to be operated at preselected times or after preselected time intervals (G04G 11/00, G04G 13/00 take precedence; pulse delay circuits H03K 5/13; electronic time-delay switches H03K 17/28; electronic time-programme switches which automatically terminate their operation after the programme is completed H03K 17/296; time programming for television signal recording H04N 5/761)
17/00 Structural details; Housings

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