Autonomous radio timepiece
First Claim
1. An autonomous timepiece comprising:
- an internal timekeeping circuit for generating an autonomous time signal;
a radio receiver for receiving radio transmissions of time information and generating an absolute time signal;
a register for registering time according to said absolute time signal when said radio receiver is activated and according to said autonomous time signal when said radio receiver is not activated, whereby the received time information corrects any deviation in the registered time according to the absolute time signal and the autonomous time signal advances the registered time when said receiver is not activated; and
a display for displaying the registered time and for displaying the field intensity of the time information transmission.
1 Assignment
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Reexamination
Accused Products
Abstract
An autonomous radio timepiece (1), in particular small, portable timepiece such as a travel alarm clock or a wrist watch includes a display (25) of the prevailing radio field intensity. The display (25) is capable of simultaneously signaling the actuation of a receiver (14) for the decoding of absolute time information and is conveniently combined, in the form of a bar graph, with day indicator flags adjacent a day-of-the-week display (26). When operating outside the time zone for which the transmitter emits the coded absolute time information, the time piece may be manually switched to the instantaneously prevailing time zone. The number of time zone changes may be entered and displayed, or the prevailing hour (H) of the time zone involved is entered, from which an electro-mechanical time display (18) then continues to advance.
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Citations
19 Claims
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1. An autonomous timepiece comprising:
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an internal timekeeping circuit for generating an autonomous time signal; a radio receiver for receiving radio transmissions of time information and generating an absolute time signal; a register for registering time according to said absolute time signal when said radio receiver is activated and according to said autonomous time signal when said radio receiver is not activated, whereby the received time information corrects any deviation in the registered time according to the absolute time signal and the autonomous time signal advances the registered time when said receiver is not activated; and a display for displaying the registered time and for displaying the field intensity of the time information transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification