Abstract:
Events at spaced locations, such as contact activity in the protective relays of an electric power distribution network, are time stamped using a single remote clock by a system which includes one or more slave stations monitoring the events. Each slave station initiates a count of locally generated clocking pulses of fixed duration upon detection of the first event monitored by it. Identification of the first event is stored in a first slot in memory. Additional memory slots each store the identification of a subsequent event and the count at the occurrence of that subsequent event. Upon command from a remote master station, the current count is stored in the first slot and the contents of the first slot and of the additional slots are transmitted over a communications network to the master station. The master station calculates the absolute time of each event using its master clock, the transmitted counts, the fixed duration of the clocking pulses, and the transmission time required to transmit the data from the particular slave station to the master station. The master station then sends a clear command to reset the count and clear the memory slots. If the number of events detected by a slave station before a clear command is received exceeds the number of memory slots available, the information on the first event stored in the first slot is retained, and the additional slots retain data on as many of the most recent events as there are additional slots.
Abstract:
A continuous time-of-day or date correction of a signal produced by a clock module is obtained from the data in a video-text or teletext signal that contains accurate time-of-day and/or date reference information. When the video-text/teletext data contain such reference information, the data of the output signal of the clock module are compared, on a continuous basis, with the received video-text/teletext. In case of a deviation between the clock module data and the reference information, a correction signal is applied to the clock module and corrects the clock module.
Abstract:
A filtering system is provided for acquiring and processing signals using a sampled filter for signal separation and signal enhancement; such as for determing locations, distances, and times in a geophysical exploration system. Signature signals permit mixing and seperation with sampled filters, such as for sharing common circuitry and for increasing the amount of acquired information. A sampled filter, such as a digital correlator, is provided for generating high resolution output data in response to low resolution input data processed with low resolution computation circuits. A real-time time-domain correlator is provided with single-bit resolution computational elements to provide improved correclation filtering. A high speed real-time correlator is provided to enhance signals with copositing-after-correlation and with correlation using a plurality of correlation operators.
Abstract:
A clock is provided for simultaneously displaying twenty-five (25) simulated time synchronized with twenty-four (24) real-time. Preferably, the clock comprises a digital processor for controlling the operation of the clock, a first display connected to the digital processor for displaying twenty-four (24) hour real-time representations and a second display located proximate to the first display and connected to the digital processor for displaying twenty-five (25) simulated time representations. A look-up table encoding technique is used to convert each twenty-four (24) hour real-time representation to a corresponding twenty-five (25) hour simulated time representation. In operation, a program display program is run by the digital processor to display the twenty-four (24) real-time representation on the first display and the twenty-five (25) hour simulated time representation on the second display.
Abstract:
A tuner with a timepiece for a watch radio includes a display on which either a current time being counted by the timepiece or a frequency being received by the tuner is selectively displayed, and a first key group including a plurality of keys which are operated to control a function of the timepiece and a second key group including a plurality of keys which are operated to control a function of the tuner. An operation of the second key group is inhibited when the current time is displayed on the display. In this state, a displaying state of the display is automatically changed and the frequency is displayed on the display if a band key included in the second key group is operated, and thereafter the operation of the second key group is allowed to control the function of the tuner.
Abstract:
A time-of-use meter is provided with a means for storing a plurality of identifiers that each represent a cyclic event. These cyclic events are described in such a way that a single word of storage is sufficient to represent numerous occurrences of the cyclic event over a period of many years. A microprocessor-based calendar program is provided with a means for storing a plurality of cyclic event identifiers and special event identifiers in a manner which significantly reduces the required memory storage within the microprocessor and its peripheral memory devices.
Abstract:
A highly portable, disposable, self-contained timer provides a user-perceptible signal at automatically-successive, fixed time intervals to alert the user as to the times for taking medications. The time intervals are not variably programmable, and different timers having different fixed time intervals are provided for use with different medications. Preferably, the time intervals are nonuniform, comprising multiple shorter intervals combined with a longer interval corresponding to a normal sleeping period so that, when the timer is initialized in accordance with the user's sleeping cycle, no signal is emitted while the user is asleep. The device is powered by a nonreplaceable battery for economy and disposability, and a deactivator circuit is included which permanently disables the unit after a predetermined length of time well within the life of the battery. A signal emitted by one of a number of timers is easily distinguished, without requiring an audible signal of excessive duration, by a visual signal of substantially longer duration than the audible signal.
Abstract:
The pushpiece mechanism for a timepiece comprises pushpiece return means arranged so that the force applied to the pushpiece passes through a maximum at an intermediate position thereof between a rest position and the pushed-in position of the pushpiece.To this end the return means are provided with two bearing elements arranged to cooperate with one another and comprising respectively a beak and a heel coupled by an elastic member, such bearing elements and elastic member being formed as a single piece.The mechanism may be applied in particular to electronic timepieces including a chronograph function.
Abstract:
An antenna tuning arrangement is provided for a miniature personal communications device which is normally worn on the body. The device includes a wristband having an antenna and antenna tuning elements which are normally concealed, to allow the antenna to be tuned while the device is being worn. A receiver in the communications device is coupled to the antenna and to a tuning indicator circuit which provides a tuning indication when the tuning element is adjusted without requiring entry into the device. The tuning indicator operation is selectable and draws no power when not selected.
Abstract:
A wristwatch contains communication and memory circuitry and a transmitter. The memory circuit stores a personal identification number of a single user. The communication and memory circuitry is driven by the same battery which powers the timekeeping structure of the watch. A transmitter transmits data from the reader to the wristwatch, placed proximate thereto. The reader has a keypad by which the user can enter a personal identification number, and the watch compares the transmitted number to the user-entered number. If the numbers match, a transaction may occur.