Junghans Uhren Gmbh

Holger Rudolph

Johannes Neudecker

Thomas Lechner

Wolfgang Ganter

Reiuer Furch

In a solar-powered, radio-controlled timepiece an incorrect display can occur before the operating voltage definitively falls below the switch-off level if each pulse for the electromechanical transducer is no longer sufficient for advancing the display. A step monitor senses such an insufficient pulse and triggers a reset command in order to switch on the radio signal receiver for automatically correcting the hands position to the absolute time which is decoded from the current time telegram.

Method and apparatus for controlling a solar-powered radio-controlled timepiece when a storage element is inadequately charged

A radio-controlled wristwatch includes a casing, a printed circuit board disposed in the casing, and an antenna disposed in the casing. The antenna includes a core and a coil carried by the core. The core comprises a stack of soft-iron strips stacked in a direction parallel to a plane of the circuit board. The stack is arranged in a curved shape extending along and adjacent to an outer peripheral edge of the circuit board. The core is bonded to a surface of the circuit board and supports the coil within a pocket formed in the circuit board.

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Munich, Georgia

Holger Rudolph