| G | SK | PHYSICS |
| G04 | KL | HOROLOGY |
| G04G | UKL | ELECTRONIC TIME-PIECES [3] |
| G04G 1/00 | HGR | Subject matter not provided for in groups G04G 3/00 to G04G 19/00 [3, 7] |
| G04G 1/02 | UGR1 | | . | Input or output devices integrated in time-pieces [7] |
|
| G04G 1/04 | UGR2 | | . . | Detectors of external physical values, e.g. temperature [7] |
|
| G04G 1/06 | UGR2 | |
| G04G 1/08 | UGR2 | |
| G04G 1/10 | UGR2 | | . . | Touch switches specially adapted for time-pieces [7] |
|
| G04G 3/00 | HGR | 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] |
| G04G 3/02 | UGR1 | | . | Circuits for deriving low frequency timing pulses from pulses of higher frequency (pulse frequency dividers in general H03K 23/00 to H03K 29/00) [3] |
|
| G04G 3/04 | UGR1 | | . | Temperature-compensating arrangements [7] |
|
| G04G 5/00 | HGR | Setting, i.e. correcting or changing, the time-indication [3] |
| G04G 5/02 | UGR1 | | . | by temporarily changing the number of pulses per unit time, e.g. quick-feed method [3] |
|
| G04G 5/04 | UGR1 | | . | by setting each of the displayed values, e.g. date, hour, independently [3] |
|
| G04G 7/00 | HGR | Synchronisation [3] |
| G04G 7/02 | UGR1 | |
| G04G 9/00 | HGR | Visual time or date indication means [3] |
| G04G 9/02 | UGR1 | | . | 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 [3] |
|
| G04G 9/04 | UGR2 | | . . | by controlling light sources, e.g. electroluminescent diodes [3] |
|
| G04G 9/06 | UGR2 | | . . | using light valves, e.g. liquid crystals [3] |
|
| G04G 9/08 | UGR1 | | . | by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques [3] |
|
| G04G 9/10 | UGR2 | | . . | by controlling light sources, e.g. electroluminescent diodes [3] |
|
| G04G 9/12 | UGR2 | | . . | using light valves, e.g. liquid crystals [3] |
|
| G04G 11/00 | HGR | Producing optical signals at preselected times [3] |
| G04G 13/00 | HGR | Producing acoustic time signals [3] |
| G04G 13/02 | UGR1 | | . | at preselected times, e.g. alarm clocks [3] |
|
| G04G 15/00 | HGR | 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) [3] |
| G04G 17/00 | HGR | Structural details; Housings [7] |
| G04G 17/02 | UGR1 | | . | Component assemblies [7] |
|
| G04G 17/04 | UGR2 | | . . | Mounting of electronic components [7] |
|
| G04G 17/06 | UGR2 | | . . | Electric connectors, e.g. conductive elastomers [7] |
|
| G04G 17/08 | UGR1 | |
| G04G 19/00 | HGR | Electric power supply circuits specially adapted for use in electronic time-pieces [7] |
| G04G 19/02 | UGR1 | | . | Conversion or regulation of current or voltage [7] |
|
| G04G 19/04 | UGR2 | | . . | Capacitive voltage division or multiplication [7] |
|
| G04G 19/06 | UGR2 | |
| G04G 19/08 | UGR1 | | . | Arrangements for preventing voltage drop due to overloading the power supply [7] |
|
| G04G 19/10 | UGR1 | | . | Arrangements for supplying back-up power [7] |
|
| G04G 19/12 | UGR1 | | . | Arrangements for reducing power consumption during storage [7] |
|