Setting, i.e. correcting or changing, the time-indication [3]
G04G 5/02
·
by temporarily changing the number of pulses per unit time, e.g. quick-feed method [3]
G04G 5/04
·
by setting each of the displayed values, e.g. date, hour, independently [3]
G04G 7/00
Synchronisation [3]
G04G 7/02
·
by radio [3]
G04G 9/00
Visual time or date indication means [3]
G04G 9/02
·
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
· ·
by controlling light sources, e.g. electroluminescent diodes [3]
G04G 9/06
· ·
using light valves, e.g. liquid crystals [3]
G04G 9/08
·
by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques [3]
G04G 9/10
· ·
by controlling light sources, e.g. electroluminescent diodes [3]
G04G 9/12
· ·
using light valves, e.g. liquid crystals [3]
G04G 11/00
Producing optical signals at preselected times [3]