Abstract: An electronic timepiece having a calendar mechanism for displaying a date or date and day includes circuitry for detecting the timing or the movement of the calendar mechanism and for generating a detecting signal. The timepiece also includes means for controlling the electric power supplied to energizing means for the calendar mechanism when the detecting signal is supplied.

Abstract: An electronic timepiece having a single digital display and being suitable to operate as a standard timekeeping wristwatch or in the alternative as a chronograph. Separate divider circuits are provided for performing the timekeeping and chronograph functions. A single set of switches is provided for controlling the operation of either divider circuit, a single selector circuit selecting which function is to be displayed and which divider is to be controlled by the switches. Indication means are provided for indicating which function is being displayed.

Abstract: A construction of stacked base plates for a timepiece comprises: a plurality of base plates connected together by calking pins. A portion of one of the calking pins functions as a pivot portion or guide portion for a movable spring member which is mounted on one base plate. Other areas of said base plates are connected by screw bolts so that said base plates are rigidly connected together by said calking pins and screw bolts.

Abstract: The present disclosure is directed to an electronic digital clock made up of electronic components without using a chain of counters. The digital clock utilizes shift registers with a recirculation path for storing the time information as to hours, minutes and/or seconds and a computing circuit for repeatedly adding the time information one by one in accordance with a predetermined clock base frequency.

Abstract: A watch case in which a bezel of a crystal and a case band are removably secured together by engagement of a plate spring secured to the bezel with an inclined surface of the case band. A waterproof relation can be obtained between the bezel and the case band by providing a gasket between the bezel and the case band. The plate opening has one portion secured in a recess of the bezel and a bent portion engaging the inclined surface.

Abstract: Electronic substrate of the electronic watch is the principal carrier of the electronics and electrical interconnections. Top and bottom spacers embrace the substrate. Contact springs press onto and clamp on the substrate and contact the circuitry on the substrate. The springs are contactable for input to the watch electronics.

Abstract: An electronic timepiece which includes a time reference signal generator, which generates a signal which is used to count time, and is compensated in its frequency in order to have the predetermined frequency value regardless of variations in ambient temperature.

Abstract: A switching system for an electronic timepiece has: a plurality of display sections which are individually activated in response to movement of manual member for effecting an amendment of said display sections. A switching mechanism is operated by axial movement and rotational movement of said manual member for effecting the desired amendment.

Abstract: An electronic digital display wristwatch wherein correction of the time displayed is facilitated by an improved manually operated correction assembly. The electronic wristwatch includes a divider circuit comprising a plurality of divider stages adapted to produce timekeeping signals in response to a high frequency time standard signal applied to said divider circuit. A plurality of display elements are adapted to receive the timekeeping signals and display time in response thereto. A correction circuit assembly is coupled to each of the respective divider stages producing timekeeping signals. The correction circuit assembly includes a manually operated member displaceable in a first and second direction, the displacement of the member in a first direction effecting selection of a divider stage to be corrected, and displacement of said member in the other direction effecting correction of the divider stage selected by the first mentioned displacement.

Abstract: A booster circuit for a liquid crystal display device of a timepiece is disclosed. The booster circuit is a sort of a blocking oscillator having a transformer of which turns ratio is 1 : n (where n is a real number). The rectified output voltage of said blocking oscillator is superposed on the voltage of the cell so that the output voltage of the booster circuit is higher than of the blocking oscillator. A smoothing condenser has ample capacitance to have a larger time constant than the fluctuation time of the voltage of the cell owing to mechanical shock.

Abstract: An all electronic type timepiece is disclosed which comprises a customary or usual display for displaying time, a calendar, a.m., p.m., colon and other functions. An additional display element is provided separately from the customary display or alternatively is constructed as a part thereof for displaying the operating condition of a time counter circuit even when the customary display is extinguished.

Abstract: In electronic watch-and-band arrangements the batteries are located in the band portion, separately from the watch movement and display. This permits the arrangement to assume novel configuration and gives it novel disposable features.

Abstract: An electronic timepiece comprising a time indicating body which is composed of a multitude of liquid crystal display elements arranged in hour indicating sections and minute indicating sections respectively, said display elements for hour indication being activated to be turned ON one after another, said display elements for minute indication being activated to be turned ON successively and accumulatively in response to the application of controlled electric signals transmitted from an electronic circuitry for driving said display elements, said hour and minute indications creating various display patterns on the surface of said indicating body so that the time is indicated analogically by said display patterns with time information.

Abstract: A system for creating and displaying colored roulette curves representative of music on a screen includes an X-,Y-deflection control circuit which is driven in part by at least two musically-related fixed frequency signals. These frequencies are taken from an arithmetic progression of pseudotempered scale tones and are very nearly equal in frequency to frequencies of tones in the geometric progression of tempered scale music tones. In addition, they form a ratio of integers, one to the other, approximately equal to [N(1.0594631)n]/N, where N is an integer, n-1 is the number of tones skipped between two corresponding tones in the tempered scale, and (1.0594631)/1 is the common ratio relating adjacent tempered scale music tones as well as the common difference in various arithmetic progressions of pseudo-tempered scale tones as related to changes in musical key.

Abstract: A digital watch with oscillator/divider power selection circuitry. The selection circuitry selects the source of the voltage to be supplied to the crystal oscillator and initial divider circuits. If battery voltage is low because battery current is high, as when the light emitting diodes (LED's) are illuminated in an LED digital watch or when the illumination light is on in a liquid crystal display (LCD) digital watch, the crystal oscillator and initial divider would be powered by two batteries; and when battery voltage is high because battery current is low, the crystal oscillator would be powered by only one battery. Therefore, the power selection circuitry determines whether one or two batteries are used to power the oscillator depending upon the particular operating conditions. There are two advantages of this technique: (1) current is reduced so battery life is increased, and (2) the voltage never goes so low that circuit production yields are adversely affected.

Abstract: Accumulating measuring devices which indicate the flow of electric current on graduated scale. Current flow may be of any fixed rate or value, steady or pulse, and scale may be any desired graduations. Current flow is indicated by a persistent electrochromic display material which changes color due to passage of electric current through it. The entire device is electronic, with no mechanical parts. Other accumulating functions may also be measured with the device if they can be converted first to electric current. One particular application is an elapsed time indicator, e.g. a watch or clock.

Abstract: Electronic watch is constructed with a ceramic substrate as the principal support of the time computer and memory. The substrate may also carry other devices such as printed circuitry, oscillator and the optical display. Battery connection contacts are positioned on one side of the substrate. A resilient electrically conductive pad is positioned against the contact, and the battery rests against the pad to provide electrical conduction over a large area and to spread shock loads from the battery across a large area of the substrate to both maintain electric contact and minimize mechanical shock.

Abstract: A device for maintaining constant the amplitude of the oscillation of an electro-magnetically driven balance wheel of a timepiece, whereby a first voltage is generated of an amplitude proportional to the amplitude of oscillation of the wheel. This is compared with a reference voltage and a signal is derived corresponding in amplitude and sign with the difference. This signal is then used to control the application of driving pulses to the balance wheel. The said driving pulses are preferably much shorter than one half-period of the balance wheel.

Abstract: An electronic timekeeping system is implemented in bipolar integrated circuit technology for displaying time by way of a digital display. The bipolar circuitry is implemented utilizing integrated injection logic and has a stacked oscillator/regulator combination which provides a highly regulated timekeeping signal source. The regulator consumes a first amount of current in providing the regulated output, and the first amount of current is reconsumed by the series connected oscillator, thereby conserving system power.

Abstract: A menstrual calculator to determine the fertile dates of a period composed of a base panel and dials and a pointer which bear date indicia and are rotatable independently about a common dial pin.