Matches 1 - 50 out of 88 1 2 >
Match Document Document Title
7391273 Clock signal output apparatus and control method of same, and electric apparatus and control method of same  
The clock signal output device has a crystal oscillator for generating a reference clock signal and generating and outputting an output clock signal having a prescribed frequency on the basis of...
7387433 Integrated circuit chip for analogue electronic watch applications  
An integrated circuit for analogue electronic watch applications, comprising an oscillator circuit for generating clock signals, stepper motor driver circuit for generating motor driving signals, a...
6120178 Method for adjusting the rate of a horological module by means of fuses able to be destroyed by laser  
A method for adjusting the rate of a horological module, said horological module including a printed circuit (1) on which are mounted in particular a quartz (10) and an integrated circuit (20)...
5973617 Control circuit with adjustable standby oscillator  
A control circuit adapted to be switched to a standby mode during periods without control requirement and to be repeatedly reset during the standby mode of operation for a short wake-up period each...
5805000 Logical lose-gain circuit and electronic device having logical loose-gain circuit  
A regulating circuit for a quartz crystal oscillator-based timepiece is capable of compensating for large deviations in oscillation frequency of the quartz crystal oscillator. A frequency divider...
5644271 Temperature compensated clock  
A temperature compensation system includes a first oscillator to generate a number of pulses which vary from a desired frequency as a function of temperature of the first oscillator. The system...
5587691 Digital trimming for frequency adjustment  
A digital trimming circuit is used to produce a stable time reference signal. This type of reference time signal can be used in equipment, such as watches, which have motors and acoustic outputs...
5481507 Electronic timekeeping device reduced adjustment data storage requirement  
To produce a time-base signal for timekeeping, an oscillator circuit generates an oscillator clock signal, which is counted cyclically with a programmable cycle length to establish a time-base...
5444674 Hand held decimal timer with improved frequency division  
The hand held decimal timer circuit comprises: a power supply having a positive voltage output and a ground or common output; a counter circuit coupled to the power supply; a frequency divider...
5375105 Timekeeping rate regulator for crystal controlled watches and clocks  
An adjustable vibrations counter (20) and an elapsed time counter and switch (18) that select and adjust one second durations, the adjustment depending on whether the timekeeping rate of a watch or...
5327404 On-chip frequency trimming method for real-time clock  
Apparatus for digitally trimming the output frequency of a real-time clock is disclosed. The output frequency of a divider chain is adjusted by the contents of a trim constant register. The amount...
5204845 Clock synchronization  
A method of adjusting the pulse rate of a local clock (1) by generating a first pulse train at a first predetermined rate, dividing the pulse train by a divisor (3) to produce a second pulse train....
4763309 Programming arrangement for a non-volatile memory for a timepiece  
This programming arrangement for a non-volatile memory incorporated in the inner circuit of a timepiece for adjusting the frequency of the time base thereof includes a support provided with a...
4737944 Electronic timepiece  
In a temperature gradient adjustor for a temperature-compensated electronic watch, the temperature gradient adjusting range can be widened without any drop in the temperature gradient adjusting...
4707145 Electronic timepiece  
An electronic timepiece has an oscillator for generating a high frequency time standard signal which is frequency-divided by a multi-stage divider circuit. A memory stores time adjustment...
4553850 Logical regulation circuit for an electronic timepiece  
A logic regulation circuit for regulating the frequency dividing ratio of a variable frequency divider of an electronic timepiece comprises a first switch group having a plurality of ON and OFF...
4473303 Electronic timepiece  
An electronic timepiece is provided with a temperature compensation system which combines precise control of the timebase oscillator circuit frequency over a narrow temperature range with control...
4464061 Linearizer circuit and an electronic watch incorporating same  
A linearizer circuit comprises a frequency mixer which mixes a first frequency varying in accordance with a change in a parameter and a second frequency from a reference oscillator which has no...
4461582 Circuit arrangement for adjusting a pulse frequency of a quartz-controlled watch or clock  
In a circuit arrangement for adjusting a pulse frequency of a quartz-controlled clock or watch there are present a pulse generator, a multi-stage frequency divider arranged behind said pulse...
4456386 Timepiece having a divider chain with an adjustable division rate  
The timepiece includes a low frequency oscillator serving as time base and rranged to feed a first chain of frequency dividers having an adjustable division rate in order to display the time and a...
4453834 Electronic timepiece with temperature compensation  
An electronic timepiece having a quartz crystal oscillator circuit as a timebase signal source is provided with a temperature compensation system to compensate timebase signal frequency deviations...
4440503 Electronic timer  
An electronic timer with a case having two windows and a manually adjustable control on the exterior. The output of an oscillator within the case is applied to a first frequency divider dividing...
4433920 Electronic timepiece having improved primary frequency divider response characteristics  
In an electronic timepiece having a primary frequency divider circuit coupled to receive a standard frequency signal and comprising a group of P-channel FETs and a group of N-channel FETs, a bias...
4408897 Electronic timepiece having a digital frequency correction circuit  
An electronic timepiece comprising a rate correction circuit for modifying the number of time base pulses received by the frequency divider during a predetermined period of time by a predetermined...
4407589 Error correction method and apparatus for electronic timepieces  
A method and apparatus for correcting errors in an electronic digital timepiece that includes an oscillator which has a 2 n frequency output, an n-stage frequency divider for reducing the...
4382692 Analog-display electronic timepiece comprising a divider with an adjustable division factor  
An electronic watch comprising a stepping motor for driving a mechanism for displaying the time information, a quartz oscillator, a frequency divider with an adjustable division factor, a circuit...
4378167 Electronic timepiece with frequency correction  
A time correction circuit for an electronic timepiece comprising an oscillator circuit inputting a high frequency standard signal to a divider network, the divider network dividing down the...
4373821 Electronic timepiece generating different alarm sounds for respective different regions  
An electronic timepiece has a display unit capable of displaying different times in two or more regions in the world, an alarm time setting circuit capable of setting alarm times in the respective...
4320482 Switch for an electronic timepiece  
A plurality of mechanical switches in an electronic timepiece having a timepiece circuit which performs frequency division and which has a plurality of terminals for controlling frequency division...
4300224 Electronic timepiece  
An electronic timepiece comprising a fundamental frequency oscillator, a plurality of frequency divider stages, a timekeeping mechanism and display, includes circuitry for resetting and setting...
4264968 Basic circuit for electronic timepieces  
There is provided an electronic timepiece basic circuit comprising a pulse generating circuit for generating 1 Hz pulses, a first terminal group having a plurality of terminals including a terminal...
4254494 Accuracy correction in an electronic timepiece  
A system for correcting the accuracy of a reference signal in an electronic timepiece comprises an electronic timepiece including a reference signal frequency correction means for increasing or...
4247932 Electronic timepiece  
An electronic timepiece includes frequency-dividing circuit means for generating a first signal of at least 1 Hz from a signal of a predetermined frequency. This first signal is counted by a time...
4223268 Frequency dividing circuit of variable frequency dividing ratio type  
A frequency dividing circuit for dividing an input signal provided from a signal source at a selected dividing ratio includes first and second cascade-connected frequency dividers with signal...
4176517 Integrated circuit for timepiece  
An integrated circuit comprises components for the basic functions of a timepiece and additional components for controlling the operation mode of the basic components. By properly controlling the...
4155218 Electronic watch  
In an electronic watch, the content of the memory associated with the adjusting circuit of the division ratio of the frequency divider is modified at each correction of the display to compensate...
4154053 Electronic timepiece having an adjustable rate of division and method for its manufacture  
An internal correction circuit is provided to correct the timepiece error caused by the crystal oscillator frequency changes. The timepiece operates by frequency dividing the oscillator frequency...
4148184 Electronic timepiece utilizing main oscillator circuit and secondary oscillator circuit  
An electronic timepiece having a main oscillator circuit including a first quartz crystal vibrator as a time standard and also having a secondary oscillator circuit including a further quartz...
4142360 Electronic timepiece  
Control circuitry for an electronic timepiece that is capable of producing a signal representative of the timing rate of the electronic timepiece's time standard and the amount that the timing rate...
4117663 Electronic watch with time correction system  
An electronic watch wherein pulses from a high-frequency standard are converted by a frequency divider into low-frequency timing pulses which are supplied to a stepping motor to advance the hands...
4114363 Electronic timepiece  
An electronic timepiece having circuitry for automatically adjusting the time rate by comparing same to a randomly selected reference, is provided. A timing rate circuit includes an oscillator for...
4101838 Clock pulse generating apparatus  
A clock pulse generating apparatus comprises a pulse generator for generating a pulse signal of a predetermined cycle, a frequency divider including a plurality of frequency division stages for...
4098070 Digital display electronic wristwatch  
A digital display electronic wristwatch including a quartz crystal high frequency time standard having a natural frequency in the MHz range is provided. The quartz crystal time standard is...
4095406 Second adjustment system in an electronic watch  
Second adjustment system in an electronic watch employing a quartz oscillator as a time base. The watch comprises a standard oscillating circuit including the quartz oscillator, a divider, a...
4092604 Apparatus for adjusting the output frequency of a frequency divider  
Apparatus for adjusting the output frequency of a frequency divider comprising a circuit constituted of a resistance R and a capacitor C for receiving output pulses from the divider. A comparator...
4085577 Electronic timepiece  
An electronic timepiece is driven by a pulse motor and includes a pulse motor driving circuit which applies frequency-divided pulses for maintaining the rotational inertia of a rotor. The...
4083176 Time correcting system for electronic timepiece  
A time correcting system for an electronic timepiece. The correcting system includes a single manually operable switch connected to a switching circuit for developing a chatter-free switching...
4081951 Electronic timepiece  
An electronic timepiece, wherein an oscillator drives a frequency divider and the output of the frequency divider controls via a driver circuit a display device. A short-circuit between an output...
4075827 Adjustable circuit for an electronic timepiece  
An adjustable circuit for an electronic timepiece including a crystal oscillator, a frequency divider circuit, a display and a controlable means for increasing and decreasing the output frequency...
4062178 Electronic timepiece  
A frequency regulating circuit for an electronic timepiece is provided. The electronic timepiece includes an oscillator circuit for producing a high frequency time standard signal and a divider...
Matches 1 - 50 out of 88 1 2 >