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US 4,357,693 AGranted
Electronic hour timesetting device for electronic analog timepiece
AssigneeTimex Corporation
InventorsMichel Plancon, Jean-Pierre Migeon, Paul Grand Chavin
Life of this patent
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Abstract
An electronic analog timepiece with hour and minute hand driven by a stepping motor in accordance with low frequency timekeeping signals supplied by a high frequency quartz time reference. The electronic time-setting control circuit is controlled by a single manual push-button switch. The time is adjusted for correction, daylight saving or time zone change at slow, fast and accelerated rate in the clockwise and counterclockwise directions. Both an automatic single hour time correction with automatic restart, and a manual restart option are incorporated.
Claims12
An electronic analog timepiece comprising:
- a time standard providing periodic high frequency signals,
- a frequency divider providing periodic low frequency signals in response to said high frequency signals, said divider also providing first, second, and third intermediate frequency signals,
- a drive circuit responsive to stepping motor pulses supplied at a plurality of different frequencies and adapted to provide forward pulse wave shapes and reversing pulse wave shapes at selected frequencies,
- a reversible stepping motor adapted to rotate the hands of said timepiece in response to signals from the drive circuit, and
- control circuit responsive to said low frequency and to said first, second, and third intermediate frequency signals, said control circuit having first gating means furnishing normal, slow, fast, and accelerated stepping pulses to the drive circuit for movement of said timepiece in at least one direction, said control circuit further including a plurality of counters having a plurality of second gating means connected to selected counter outputs, and a plurality of flip-flop means arranged to control transition from one stepping speed to the next in response to preselected numbers of counts registered by said counters, and
- a manual time correcting switch connected to said control circuit for controlling said logic switching means.
3 more elements
The combination according to claim 8 wherein said control circuit includes time delay and switching means associated with said manual switch such that a single momentary closure of the switch actuates rotation in one direction and increments the time by one hour in accordance with the pulse count from said counters and wherein momentary closure of the switch more than once within a predetermined time interval initiates time correction of the hands first in said one direction and then in the opposite direction for an increment of one hour in accordance with the same pulse count from said counters, whereby the same number of pulse counts serves to provide time correction and to compensate for time required to make the correction, regardless of the direction of rotation.
An electronic analog timepiece comprising:
- a time standard providing periodic high frequency signals,
- a frequency divider connected to the time standard and providing a periodic low frequency signal in response to said high frequency signals, said divider also providing a plurality of trains of periodic intermediate frequency signals.
- a drive circuit responsive to stepping pulses at a plurality of frequencies and adapted to provide forward pulse wave shapes and reverse pulse wave shapes,
- a reversible stepping motor adapted to rotate the hands of said timepiece clockwise or counterclockwise in response to the pulse wave shapes from said drive circuit, and
- control circuit responsive to said low frequency and said intermediate frequency signals with an output connected to said drive circuit, said control circuit including logic switching means supplying first intermediate frequency signals for time correcting at a slow speed with automatic switching to a second intermediate frequency signal for time correcting at a fast speed after a preselected number of pulses furnished by said divider to said control circuit and wherein said control circuit includes a plurality of counters which count a preselected number of pulses at said first intermediate frequency, and wherein said logic switching means is responsive to a preselected pulse count from said counters actuating a first device which enables stepping pulses to said drive circuit at said second higher intermediate frequency.
2 more elements
An electronic analog timepiece comprising:
- a time standard providing periodic high frequency signals,
- a frequency divider connected to the time standard and providing a periodic low frequency signal in response to said high frequency signals, said divider also providing a plurality of trains of periodic intermediate frequency signals,
- a drive circuit responsive to stepping pulses at a plurality of frequencies and adapted to provide forward pulse wave shapes and reverse pulse wave shapes,
- a reversible stepping motor adapted to rotate the hands of said timepiece clockwise of counterclockwise in response to the pulse wave shapes from said drive circuit, and
- a control circuit responsive to said low frequency and said intermediate signals with an output connected to said drive circuit, said control circuit including logic switching means supplying first intermediate frequency signals for time correcting at a slow speed with automatic switching to a second intermediate frequency signal for time correcting at a fast speed after a preselected number of pulses furnished by said divider to said control circuit and wherein said logic switching means includes a second device which is connected to return the timepiece to normal running speed after a second preselected number of pulses at slow and fast time correcting speeds have been counted, said second preselected number of pulses being such as to advance the timepiece hands by one hour adjusted by the time consumed and the time taken to carry out the slow and fast time correcting speeds.
2 more elements
An electronic analog timepiece comprising:
- a time standard providing periodic high frequency signals,
- a frequency divider connected to the time standard and providing a periodic low frequency signal in response to said high frequency signals, said divider also providing first, second, and third intermediate frequencies signals of successively higher frequencies,
- a drive circuit responsive to stepping pulses at a plurality of frequencies and adapted to provide forward pulse wave shapes and reverse pulse wave shapes,
- a reversible stepping motor adapted to rotate the hands of said timepiece, clockwise or counterclockwise, in response to the pulse wave shapes from said drive circuit,
- a control circuit responsive to said low frequency and said intermediate frequency signals with an output connected to said drive circuit for providing said drive circuit with normal, slow, and fast stepping pulses to rotate said hands in at least one direction, said control circuit including logic switching means supplying first intermediate frequency signals for time correcting at a slow speed with automatic switching to a second intermediate signal for time correcting at a fast speed after a preselected number of pulses furnished by said divider to said control circuit and wherein said logic switching means is adapted to supply slow, fast, and accelerated time correction pulses to said drive circuit for producing timepiece movement in at least one direction corresponding to the first, second, and third intermediate frequencies, and
- a manual switch connected to said control circuit for transmitting said third intermediate frequency to said drive circuit when said manual switch is closed for more than a predetermined period of time.
3 more elements
An electronic analog timepiece comprising:
- a time standard providing periodic high frequency signals,
- a frequency divider connected to the time standard and providing periodic low frequency signals in response to said high frequency signals, said divider also providing a plurality of trains of periodic intermediate frequency signals,
- a drive circuit responsive to stepping pulses at a plurality of frequencies and adapted to provide forward pulse wave shapes and reverse pulse wave shapes,
- a reversible stepping motor adapted to rotate the hands of said timepiece, clockwise or counterclockwise, in response to the pulse wave shapes from said drive circuit,
- a control circuit connected to said time correcting switch and responsive to said low frequency and said intermediate frequency signals with an output connected to said drive circuit, said control circuit including logic switching means supplying first intermediate frequency signals for time correcting at a slow speed with automatic switching to a second intermediate frequency signal for time correcting at a fast speed after a preselected number of pulses furnished by said divider to said control circuit, and
- a manual time correcting switch connected to said control circuit for controlling said logic switching means which control circuit is adapted to interrupt either the slow or fast stepping pulses to the drive circuit when said manual switch is actuated for a second time after time correcting has commenced.
3 more elements
Dependencies are inferred from the claim text.