Radio controlled clock and method for retrieving time...

Details Radio controlled clock and method for retrieving time... Radio controlled clock and method for retrieving time...

2004-08-02

2009-02-03

Chan, Wing F (Department: 2419)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S509000

Reexamination Certificate

active

07486657

ABSTRACT:
Time information is retrieved from time signals transmitted by a transmitter and received by a receiver. The retrieval relies on the examination of at least one time portion (86, 87, 88) within a time frame. The time portion has a duration shorter than the duration of the time frame (80-82), to reduce processing operations. The examination checks whether an amplitude of the time signal changed within a time portion. The amplitude change either up or down is then evaluated for the retrieval of the time information. A receiver for receiving the time signals includes components for preprocessing the received time signals thereby reducing the processing steps of a microprocessor connected to the output of the receiver.

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