A quartz controlled timekeeping device such as a chronometer or watch comprises a high frequency quartz oscillator which is coupled to a divider which reduces the quartz frequency to the required output frequency. The divider output is connected to a polarity changing driver which energizes a polarized motor. The driver changes the polarity of the driving current after every driving impulse and drives the rotor coil of the motor between alternate positions thereby driving the index system direct...

The chronometer comprises a face (11) having a first sector (14) which bears reference marks (12A) and a second sector (15) bearing reference marks (12B). A single hand is designed to move at a first speed between the starting point M of reference marks (12A) and the final point 30 of these reference marks and at a second speed between the starting point 30 of reference marks (12B) and the final point 0 of these reference marks. The displacement of the hand over the first sector lasts exactly ni...

A combined watch, elapsed time counter and pulse rate meter which is totally portable and worn as an ordinary wristwatch. The timer and pulse rate meter employ the precise timing elements such as a crystal oscillator of the digital watch. Using such precise timing elements, the human's pulse may be measured on a pulse by pulse basis and the instantaneous and average pulse values simultaneously displayed to allow a running comparison and noting of pulse aberrations. A novel pulse detector assembl...

In a program carrier for switching chronometer means comprising a motor-driven drum which comprises a plurality of switch elements at its circumference that can be displaced between an active and an inactive position and which interact with a sampler in their active position for the control of a switch, the switch elements are integrally connected to the drum via movable arms.

A driving or operating arrangement for an electro-mechanical chronometer, including an analog display having at least one indicator element, preferably for a microchronometer and/or microswitch, wherein the indicator element is driven at a rotational speed which is dependent upon the display position. An electro-mechanical transducer forming a drive element is actuated with at least one of the two pulse frequencies, through the intermediary of a switching device controlled in dependence upon the...

An electronic timepiece includes a microcontroller with timer functions for providing an output indicative of elapsed time from a selected start time. The timepiece includes a display panel displaying the elapsed time in minutes, hours, days, weeks, months and years. The output time divisions are arranged so that the year and month divisions are of the same length. This allows the user who may, for example, be trying to quit smoking, to monitor his progress with personally relevant information p...

A non-volatile memory card is described, which comprises a chronometer powered by an autarkic, card-internal power supply with a long-term energy store. The chronometer is connected to a card internal controller, such that the chronometer can provide the current time to the controller independent of a host system.

Apparatus for providing a visible display and a chronometer for providing a visible display indicative of time, including optically variable liquid normally in a first optically visible state (transparent or light scattering), and upon the application or removal of a predetermined field to the optically variable liquid, the liquid changes into a second optically visible state (light scattering or transparent) and scatters received incident light and provides a visible display; in the application...

A timepiece and chronometer with a superimposed analog/digital display arrangement. The timepiece comprises a watch case with a back and a display area, a transparent crystal, an electrically-driven digital LCD display, a superimposed analog display comprising an hour hand, minute hand, and interior bezel, an electrical analog watch movement, and a digital display driver. The digital LCD display indicates passing seconds by incrementally displaying either digits 00 through 59 or digits 01 throug...

A timepiece and chronometer with a superimposed analog/digital display arrangement. The timepiece comprises a watch case with a back and a display area, a transparent crystal, an electrically-driven digital LCD display, a superimposed analog display comprising an hour hand, minute hand, and interior bezel, an electrical analog watch movement, and a digital display driver. The digital LCD display indicates passing seconds by incrementally displaying either digits 00 through 59 or digits 01 throug...