Apparatus and method for timekeeping and time correction for analog timepiece
First Claim
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1. A time synchronizer for an analog timepiece, comprising:
- (a) a time source;
(b) means for transmitting a wireless electromagnetic signal from the time source at a pre-determined periodic time interval;
(c) an analog timepiece;
(d) means carried by said analog timepiece for receiving said electromagnetic signal and processing said electromagnetic signal into signal pulse;
(e) motive means cooperating with the hands of the analog timepiece and with the means for receiving and processing said electromagnetic signal to move the hands of the timepiece to the position to display the time indicated by the time source; and
(f) means for transmitting correction signal at a periodic interval, and wherein said means for receiving and processing said electromagnetic signal includes means for reviewing and processing said correction signal at given intervals in order to compensate for an accumulated time error between the time source and the analog timepiece.
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Abstract
A time synchronizer is disclosed for an analog timepiece. An electronic circuit 20 is disclosed which generates a direct current pulse upon receipt of an input signal from a remote source. Circuit 20 is operable in two separate modes through outputs from a timekeeping output 25 and a time correction output 38. The time correction mode operates through a feather switch 35 having a contact 35b which rides in a cam 34 of a rotating wheel 33 which moves in synchronization with hands 12A and 12B of an analog timepiece.
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Citations
10 Claims
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1. A time synchronizer for an analog timepiece, comprising:
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(a) a time source; (b) means for transmitting a wireless electromagnetic signal from the time source at a pre-determined periodic time interval; (c) an analog timepiece; (d) means carried by said analog timepiece for receiving said electromagnetic signal and processing said electromagnetic signal into signal pulse; (e) motive means cooperating with the hands of the analog timepiece and with the means for receiving and processing said electromagnetic signal to move the hands of the timepiece to the position to display the time indicated by the time source; and (f) means for transmitting correction signal at a periodic interval, and wherein said means for receiving and processing said electromagnetic signal includes means for reviewing and processing said correction signal at given intervals in order to compensate for an accumulated time error between the time source and the analog timepiece. - View Dependent Claims (2, 3)
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4. A time synchronizer for an analog timepiece, comprising:
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(a) a time source; (b) means for transmitting wireless electromagnetic signals from the time source at a predetermined periodic time interval, including a timekeeping signal and a time correction signal; (c) an analog timepiece; (d) means for receiving and processing said electromagnetic signals carried by said analog timepiece, and comprising; (i) a timekeeping circuit for converting said timekeeping signal into an electromagnetic time indicating movement of the timepiece; and
,(ii) a time correction circuit for converting said time correction signal into electromechanical time correcting movement of the timepiece. - View Dependent Claims (5, 6, 7)
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8. A method for synchronizing an analog timepiece, comprising the steps of:
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(a) transmitting a wireless electromagnetic signal from a time source at a pre-determined periodic time interval; (b) providing an analog timepiece with means carried by said analog timepiece for receiving said electromagnetic signal and for processing said signal into a signal pulse; (c) using said signal pulse for activating motive means cooperating with the hands of the analog timepiece to move the hands of the timepiece to the position to display the time indicated by the time source; and (d) transmitting a correction signal at a periodic interval and receiving and processing said correction signal at given intervals in order to compensate for an accumulated time error between the time source and the analog timepiece. - View Dependent Claims (9)
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10. A method of synchronizing time of an analog timepiece, comprising the steps of:
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(a) transmitting a wireless electromagnetic timekeeping signal from a time source at a pre-determined time interval; (b) transmitting a wireless electromagnetic time correction signal at a pre-determined time interval; (c) providing an analog timepiece with means for receiving and processing electromagnetic signals into a signal pulse; (d) converting said timekeeping signal pulse into an electromagnetic time-indicating movement of the hands of the timepiece; and
,(e) converting said correction signal into electromechanical time correcting movement of the hands of the timepiece.
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Specification