Radio-controlled clock

Details Radio-controlled clock Radio-controlled clock

2006-03-14

2006-03-14

Hirshfeld, Andrew H. (Department: 2854)

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

C368S046000

Reexamination Certificate

active

07012856

ABSTRACT:
A radio-controlled clock (RCC) for receiving and decoding a transmitted time signal to display a precise time in accordance with a time standard. A light emitting diode (LED) display emits sufficient light for easy readability under all lighting conditions, including the time numerals. A signal reception indicator remains lit if the RCC has successfully decoded a time signal. If the time signal is currently being received and decoded, the signal reception indicator flashes. If the decoding is unsuccessful, the signal reception indicator will be unlit until the next decoding attempt. A power transformer to supply current to electronic circuitry contained within in the housing of the RCC is located in the power line cord, as at the plug end, to minimize electromagnetic interference with the decoding of the time signals. A signal strength indicator may have multiple segments to indicate if the received signal is strong, medium, weak or too weak for decoding. Capability is also provided to program a special day, such as a birthday, anniversary, or the like.

REFERENCES:
patent: 4582434 (1986-04-01), Plangger et al.
patent: 5036500 (1991-07-01), Ganter
patent: 5177714 (1993-01-01), Ganter et al.
patent: 5349570 (1994-09-01), Kaiser et al.
patent: 6219302 (2001-04-01), Tanoguchi et al.
patent: 6269055 (2001-07-01), Pikula et al.

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