An electronic clock in which the time is indicated by a combination of hour indications and decimal minute indications. A basic time input is successively divided by factors to provide signals that control lights, the lights including a first series of lights to indicate the hour, a second series of lights to indicate the tens digit of the minute, and a third series of lights to indicate the units digit of the minute.
A crystal electronic timepiece comprising transistors operating as a switch and connected to the input of each stage of a multistage frequency divider respectively in a common-emitter circuit. A coincidence circuit is connected to the output of each stage of the multistage frequency divider in a common-emitter circuit. A pulse shaper controlling a current time indicating device is connected to the output of the coincidence circuit which is connected to the last stage of the multi-stage frequency divider. The proposed timepiece is intended to be used mainly as a crystal electronic watch.
A reset system for a digital electronic clock of the multi-stage countdown type, comprising a zero reset switch connected to the seconds stages of the clock to set and hold both at zero without disturbing the other clock stages, and separate reset switches for supplying a one hertz reset signal directly to the minutes and hours stages, on a selective basis, to set those stages as desired. Provision is also made for high speed setting of the various stages of the clock.
An electric timepiece having a square dial with corners at the twelve, three, six and nine o'clock positions has a first array of twelve light sources at one to twelve o'clock positions, a second array of four light sources which are inwardly adjacent the light sources of the first array at the twelve, three, six and nine o'clock positions, and a centrally located light source. The color and/or intensity of radiation issuing from the centrally located light source changes at midnight and at noon, and all of the remaining light sources are used to indicate minutes. The light sources of the second array indicate single-minute periods, and the light sources of the first array indicate five-minute periods. In addition, the light sources of the first array are used to indicate hours in colors or hues other than those used to denote five-minute periods.
A watch, and more particularly a wristwatch is disclosed in which the hours are only displayed in an analog manner and the minutes are only displayed in a digital manner. In the suggested display concept, the time of day is not illustrated in multiple fashion, but rather in a partially analog and partially digital manner. An analog hour display immediately provides a first overview completely sufficing in many cases, whereas a precise display for minutes and, if necessary, for seconds in digital form supplements the feeling for time provided by the hour display with effortless precision. The analog display is advantageously formed by chronologically, consecutively actuated, luminescence elements normally grouped in the shape of a wreath ("quasi-analog display").
A time correction device for electronic watches having multi-stage divider circuitry for dividing the high frequency output signals of an oscillator into low frequency timing signals including a gate at the input of each divider stage to be corrected for selectively applying to said divider stage the output signal of the prior stage or the inverse of said prior stage output signal. A switch is provided for manually actuating the gate to pass one of the prior stage output signal and the inverse thereof.
