Abstract: A suspended-line-and-clock trail monitor improved (1) by anchoring the monitor-end of the trip-line in such a manner that when a crossing animal increases line tension beyond a predetermined threshold, stored line pays out to and is carried by the animal, thereby recording its precise path and direction of travel across a line of almost any length and (2) by introducing a resettable, lightly triggered actuator between the line and the clock thereby providing reliable operation from a mass-produced, low-cost, general-purpose digital clock in place of the usual stop watch, even with a line of light sewing thread. Such thread cost effectively combines sufficient line length for long runs with good portability.

Abstract: A noise pulse rejection circuit for use in a pulse type time-of-arrival detection system is described. Preferably, the pulse type time-of-arrival detection system includes a precision distance measuring equipment (DME/P) receiver having a delay-attenuate-compare (DAC) detector. The DAC detector produces first time-of-arrival detector outputs due to receiver noise, and a second time-of-arrival detector output upon detection of a received DME pulse having a leading edge, each of the first time-of-arrival detector outputs having a substantially shorter period than the period of the second time-of-arrival detector output. The noise pulse rejection circuit preferably includes a monostable multivibrator, which is triggered by the first and second time-of-arrival detector outputs to generate a timing signal having first and second logic states, the timing signal normally changing from a first logic state to a second logic state after a predetermined time period "T".

Abstract: An electronic analog timepiece provides for elapsed and intermediate split time measurement with hands indicating fractions of a second, seconds and minutes. Hands do not move except by a user stop or split command. Then the hands rapidly move to positions indicating elapsed or split time. Alternatively, conventional continuous indications are provided except when the internal battery nears depletion, or intermittent operation of the hand indicating fractional seconds provides warning that the battery nears depletion. A wristwatch type analog display stopwatch using a plurality of step motors to drive the hands is produced.

Abstract: A dual timing event stopwatch incorporates a primary timer triggered by a remote light emission detected by an optical pick-up sensor, and a secondary timer manually triggered by a user-actuated switch. The user may select between a first operating mode wherein both timers are concurrently stopped in their interval counted cycles by a manually operated switch, and a second operating mode wherein the second timer is terminated by the manual switch and the first timer is terminated by a second remote light emission detected by the optical pick-up sensor.

Abstract: A runners watch which includes a lightweight case dimensioned to be worn on the wrist of the wearer. A display face is formed on the case. Clock circuitry is disposed within the case for operating the display face in order to display the time of the day, the date and elapsed time to the wearer. A sensor in the case detects the stride of the wearer when the wearer is running or jogging. Circuitry within the case is responsive to the sensor for computing the distance traveled by the wearer. Circuitry within the case is also responsive to the sensor for computing the rate of travel by the wearer. Switches are provided on the case for being operated to display the computed distance and the computed rate of travel.

Abstract: Method and apparatus for pulse spacing measurement with periodic pulse pairs, in particular in pulse radar, by measuring the time interval between the instants of the coincidence of a pulse edge with a trigger level which is set in a predetermined ratio to the peak value of the pulse, characterized in that the pulse pairs are sampled by the sampling method with the aid of sampling pulses whose recurrence period is smaller by a predetermined small time difference than the recurrence period of the pulse pairs, that for each time-transformed pulse obtained by the sampling the peak value is determined and a trigger level having a predetermined ratio to the peak value is set, and that the time interval between the instants of the coincidence of the trailing pulse edge of each time-transformed pulse and the associated trigger level is measured.

Abstract: An analog display electronic stopwatch including at least one first hand driven during elapsed time measurement and a secondary hand driven after completion of elapsed time measurement is provided. The first hand indicates an arbitrary unit of elapsed time which is displayed during time measurement and the secondary hand indicates time in a fraction of the arbitrary time units, the secondary hand driven after elapsed time measurement. The stopwatch includes elapsed time measurement circuitry including a memory counter circuit for counting elapsed time in 1/100ths of a second and for providing a signal for driving a second and minute hand during time measurement, a secondary counter for providing a signal for driving a 1/100th second hand after completion of time measurement. The 1/100th second hand is driven to indicate the elapsed time under one second as determined by a coincidence detector for comparing the output of the secondary counter signal and that of the memory counter.

Abstract: A watch module construction including a digital display device composed of a liquid crystal display cell and an analog display device composed of time indicating hands. A cell support frame is disposed on one side of each of a base plate and a circuit board aligned substantially on the same plane as the base plate. The cell support frame has a first recess in which the liquid crystal display cell is disposed, and a second recess in which the time indicating hands are disposed. An IC chip is mounted on the other side of the circuit board in substantially axial alignment with the display cell, and a wheel train mechanism is disposed on the other side of the base plate in substantially axial alignment with the time indicating hands.

Abstract: An electronic digital stop watch including means for generating a time standard signal, a display device for indicating the time lapsed from the start operation and alarm control means provided for presetting a desired alarm time and for generating an audible alarm signal when the lapsed time becomes equal to the preset time.

Abstract: Electronic watch for yacht races capable of being used for effecting a countdown from a warning signal, having sufficient possibilities of control and possessing a clear and easily identifiable display with regard to the time remaining until the starting signal of the race.The watch comprises control means which permit, by means of some of the electronic circuits incorporated in the intergrated circuit of the watch, starting and stopping of the countdown of at least one of the time sequences preceding the start of a race, correcting the display of at least one of the time sequences, and delaying the start of at least one of the time sequences of the watch, the start of the time sequences being announced by signals external to the watch.

Abstract: An electronic timepiece comprises an oscillator, a frequency divider for frequency dividing the output signal of the oscillator to generate 100 Hz output pulse signals, time count circuits having a plurality of counters cascade-connected to count the output pulse signals of the frequency divider, a decoder circuit for decoding the output signal of the time count circuits to generate a display signal and a display device for displaying data corresponding to the output display signal of the decoder circuit, in which a stopwatch display mode and a normal time display mode may be selected by the operation of a switch. The electronic timepiece further includes a control circuit connected between the decoder circuit and display device and adapted to inhibit normal time display data from being supplied to the display device in response to the operation of the switch which sets the electronic timepiece into the stopwatch display mode.

Abstract: A timepiece having chronograph features has an electronic digital display pable of displaying six digits. In the chronograph operating mode these are normally minutes, seconds and hundredths of seconds. Should the instrument run for more than one hour prior to a stop or split operation, then during such operation a detector and a timer will cause hours alone to be displayed alternating with the remaining information (minutes, seconds, hundredths of seconds). Thus a six digit display may be employed for eight digit information.

Abstract: A multi-range timer comprising an RC oscillator with a variable resistor whose resistance is varied with rotation of a dial. A fixed frequency divider circuit frequency-divides the output of the RC oscillator. A variable frequency divider circuit receives an output of the fixed frequency divider circuit, and a time setting section having a digital switch switches a frequency division ratio of the variable frequency divider circuit. The time limit is changed by switching the digital switch. The time setting section comprises a dial and a plurality of numerical value scales distinguished from one another by color, each of said scales having the same color as the display surface of said digital switch, which indicates a selected time setting range.

Abstract: A stop watch comprising a second hand and a subsecond hand includes manually actuatable switches for producing start, stop and reset instruction signals. A first stepping motor and a first drive controller for the stepping motor drives the second hand, while a second stepping motor and a second drive controller drives the subsecond hand. The second drive controller includes a counter for counting subsecond clock pulses in response to the start signal for effecting the display of the contents of the counter by the subsecond hand in response to the stop signal.