Abstract:
The invention relates to a time setting device for an electronic watch comprising an oscillator, a frequency divider and counting and display devices for the minutes and for the hours connected in series. This device comprises further at least one commutator to switch the input of the counter of the watch onto a capacitor, a resistor charging said capacitor, the forward or backward stepping of this counter of one unit being controlled by the discharge of said capacitor.
Abstract:
An electronic timepiece having a digital display for displaying time in response to timekeeping signals applied thereto is provided. A time correcting circuit including a manually operated switch is coupled to an electronic divider circuit which supplies the timekeeping signals to the display to correct the count therein corresponding to at least one displayed digit of time. When the switch is displaced momentarily a first correction signal is provided which corrects the displayed digit by indexing the digit by one and when the switch is displaced for a sustained period of time a second correction signal is applied to the electronic divider circuit to thereby correct the same digit by repetitively indexing said digit.
Abstract:
An electronic time-keeping apparatus generating counting pulses for a time count. The counting pulses are stored in registers connected to input gates of adders that develop, from the counting pulses stored by the registers, output signals through gates corresponding to a time count. The adders develop carry signals that are temporarily stored by a carry memory register and are applied back to the adders under control of a carry signal controller and through the latter for developing the time count output of the adders for higher order places in the time count. The time count is displayed on visual display means as a time indication corresponding to the time count. Provision is made for initial counting errors by use of an automatic initial error preventive circuit that detects errors in the counting signals stored which may result from noise or at the start of the count and signals are developed that are applied to the adders thus varying the signal content received by the adders so that the time count output thereof is free of these initial errors. Control circuitry in the form of reset circuitry is provided for resetting the time count by applying signals at will to the adders to reset the time count output and thereby the time indication of the visual display means. The control circuitry includes time advancing circuitry by which the time count output is advanced by applying signals to the adders at will so that the time count indication is advanced and an advanced time or corrected time may be displayed. The apparatus may be embodied in small clocks.
Abstract:
Multistage switching device for the input of adjustment values in electronic switching systems, including a counter circuit having counting stage inputs for counting orders of magnitude and oppositely counting directional inputs, an input switching part being movable into a plurality of adjustment positions, a plurality of contact points each being disposed at one of the adjustment positions and being connected to one of the counting stage inputs, and a changeover contact device of the input switching part being connected to the oppositely counting directional inputs.
Abstract:
An electronic timepiece is provided with a plurality of display elements for the digital display of time, driven by time-keeping circuitry. A time-correcting device coupled to said time-keeping circuitry is provided for independently correcting each of said display elements, said time-correcting device including a mechanical selector switch for selecting the display element to be corrected and a correction switch for performing the correction function on said display element.
Abstract:
A 24-hour digital clock having a plurality of division counters driven from a stable frequency which are coupled to seven line segment decoder-drivers. A selector switch coupled to the counters allows setting of the minutes, tens of minutes, hours, and tens of hours to a precise time signal while resetting all other counters.
Abstract:
There is disclosed herein an electronic solid-state time piece having an electro-optical display such as an integrated semiconductor light emitting diode structure. The display is provided by four or six digit forming display indicators giving a digital readout of hours, minutes and, if desired, second. The device includes electronic time signal generating circuitry, display drive circuitry and display interrogation and scanning means. A time setting mechanism is also provided.
Abstract:
A device for correcting the contents of a display, which is used in electronic timepieces equipped with a display for indicating day, date, hour and minute, including a stem which has a crown at a tip portion thereof and is capable of being moved between three stable positions. In the first position, the stem is in its most axially inserted position. At a second position, in which the stem is withdrawn by one step from the most inserted first position, the stem is allowed to turn in both the right and left directions by a suitable angle. At a third position in which the stem is further pulled by one step from the second position, it may also be turned, by an appropriate angle, in both directions. The movement of the stem in the axial direction is detected by a first switch means, and the rotation of the stem at the second and third positions is detected by a second switch means, whereby any one of the four display items is corrected depending upon the state of the two switch means.
Abstract:
A digital electronic timepiece comprises oscillator means for generating reference clock-pulse signals, a plurality of counter means of successive stages for successively counting the reference clock-pulse signals and respectively producing output signals for displaying numerals at respective digit positions for seconds, tens of seconds, minutes, tens of minutes, hours, and tens of hours, means for digitally displaying time in response to signals for output display of the counter means, and means for supplying a time correction reset signal to the counter means for producing as output signals for display at the digit positions respectively for seconds, tens of seconds, minutes, and tens of minutes. The time correction reset signal resets the counter means for seconds, tens of seconds, minutes, and tens of minutes so that the output signal thereof becomes a signal for "O" display. The counter means for producing an output signal for display at the digit position for tens of minutes operates, when supplied with the reset signal in the time interval from (n-1) hours p minutes to n hours p minutes, to produce as output a signal for causing the counter means for outputting the signal for display at the digit position for hours to produce an output signal for displaying n hours.
Abstract:
A data system and method for entering, storing and displaying a desired digital time which replaces a conventional input keyboard, rotary switch, or thumbwheel switch for a digital timer or clock. This system processes the voltage from a manually positioned wiper of a potentiometer through an inexpensive analog-to-digital converter, displays the digital data to the operator for identification, and holds the data for further processing. The operator repositions the wiper so as to sequentially display a digital time in response to a static or steady state digital signal until the desired digital time is displayed.