IPC Classification

Class code (prefix) Descriptions Number of results
G04G 3/00 Producing timing pulses
G04G 3/02 Circuits for deriving low frequency timing pulses from pulses of higher frequency
G04G 3/04 Temperature-compensating arrangements
G04G 5/00 Setting, i.e. correcting or changing, the time-indication
G04G 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
G04G 5/04 Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
G04G 7/00 Synchronisation
G04G 7/02 by radio
G04G 9/00 Visual time or date indication means
G04G 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
G04G 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
G04G 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
G04G 9/08 Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
G04G 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
G04G 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
G04G 11/00 Producing optical signals at preselected times
G04G 13/00 Producing acoustic time signals
G04G 13/02 Producing acoustic time signals at preselected times, e.g. alarm clocks
G04G 15/00 Time-pieces comprising means to be operated at preselected times or after preselected time intervals
G04G 17/00 Structural details; Housings
G04G 17/02 Component assemblies
G04G 17/04 Mounting of electronic components
G04G 17/06 Electric connectors, e.g. conductive elastomers
G04G 17/08 Housings
G04G 19/00 Electric power supply circuits specially adapted for use in electronic time-pieces
G04G 19/02 Conversion or regulation of current or voltage
G04G 19/04 Capacitive voltage division or multiplication
G04G 19/06 Regulation
G04G 19/08 Arrangements for preventing voltage drop due to overloading the power supply
G04G 19/10 Arrangements for supplying back-up power
G04G 19/12 Arrangements for reducing power consumption during storage
G04G 21/00 Input or output devices integrated in time-pieces
G04G 21/02 Detectors of external physical values, e.g. temperature
G04G 21/04 Input or output devices integrated in time-pieces using radio waves
G04G 21/06 Input or output devices integrated in time-pieces using voice
G04G 21/08 Touch switches specially adapted for time-pieces
G04G 99/00 Subject matter not provided for in other groups of this subclass