Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 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 the reference clock signal. The device also has an atomic oscillator fo... | 06/24/2008 |
| 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 plurality of trimming capacitors for fine-tuning the output frequenc... | 06/17/2008 |
| 7246022 | Initiation of differential link retraining upon temperature excursion A method includes detecting a change in temperature in an integrated circuit that is coupled to a differential communication link, and responding to the detected change in temperature by initiating a retraining process for the differential communication link. ... | 07/17/2007 |
| 7171323 | Integrated circuit having clock trim circuitry An integrated circuit is provided comprising a processor, an onboard system clock having a ring oscillator for generating a clock signal, a memory, and clock trim circuitry. The processor is arranged to, in response to receiving an external signal, determine the num... | 01/30/2007 |
| 7120550 | Radio-frequency identification circuit oscillator calibration According to one aspect of the present invention, there is provided a method of calibrating an oscillator within a radio-frequency identification (RFID) circuit for use in an RFID tag. A plurality of calibration values is stored within a memory structure associated ... | 10/10/2006 |
| 7118269 | Method of correcting a real-time clock of an electronic apparatus A method of correcting a real-time clock of an electronic apparatus, notably a mobile telephone, in which the real-time clock operates with a first clock generator which generates a real-time clock while the electronic apparatus operates with a second clock generato... | 10/10/2006 |
| 7096137 | Clock trim mechanism for onboard system clock An integrated circuit, comprising a processor, an onboard system clock for generating a clock signal, and clock trim circuitry, the integrated circuit being configured to: (a) receive an external signal; (b) determine either the number of cycles of the clock signal ... | 08/22/2006 |
| 6616328 | High accuracy timepiece Accuracy adjustment apparatus for a timepiece has an accuracy adjustment data input control section including a case-mounted switch such as a crown of the timepiece. A crown state detection signal is used to determine the state of the crown. When an accur... | 09/09/2003 |
| 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) including an oscillator (21) driven by the quartz (10), a freq... | 09/19/2000 |
| 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 to a full mode of operation. The control circuit comprise... | 10/26/1999 |
| 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 sequentially divides the reference clock by one-half. A reg... | 09/08/1998 |
| 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 also includes a second oscillator to generate digital pulses ... | 07/01/1997 |
| 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 that interfere with producing the time reference signal. A b... | 12/24/1996 |
| 5530407 | 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 that interfere with producing the time reference signal. A b... | 06/25/1996 |
| 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 cycle. The time-base signal is set and reset once in each time... | 01/02/1996 |
| 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 circuit coupled to the counter circuit and to the power supply... | 08/22/1995 |
| 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 clock is fast or slow. The adjustable vibrations counter ... | 12/20/1994 |
| 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 of correction and direction (slow or fast) to be effected ... | 07/05/1994 |
| 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. The value of the divisor (3) is selected (4,5,6) so that ... | 04/20/1993 |
| 5195063 | Electronic timepiece including integrated circuitry An integrated circuit for an electronic timepiece includes at least one semiconductor nonvolatile memory device. Reference data can be checked across a pair of output terminals prior to being stored in at least one EPROM to check the accuracy and acceptab... | 03/16/1993 |
| 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 connector to be plugged in in place of the energy cell. The rat... | 08/09/1988 |
| 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 resolution of a temperature sensitive oscillator by adding a ... | 04/12/1988 |
| 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 information for use in adjusting the time in the event the oscillat... | 11/17/1987 |
| 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 switching states representative of different frequency rates ... | 11/19/1985 |
| 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 of the frequency divider circuit operation to provide relat... | 09/25/1984 |
| 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 dependence upon any parameter at a given proportion, and a de... | 08/07/1984 |
| 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 generator and in front of a counter, as well as adjustable means... | 07/24/1984 |
| 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 high frequency oscillator feeding a second chain of frequen... | 06/26/1984 |
| 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 with temperature, all components of the system being incor... | 06/12/1984 |
| 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 the frequency by a factor manually selected by a switch indi... | 04/03/1984 |
| 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 circuit supplies a bias input to the P-channel FET group an... | 02/28/1984 |
| 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 number of correction pulses. The rate correction circuit i... | 10/11/1983 |
| 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 2n frequency output, an n-stage frequency divider for reducing the oscillator output frequency to a time keeping frequency, ... | 10/04/1983 |
| 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 for adjusting the division factor, a memory containing data... | 05/10/1983 |
| 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 standard signal in a plurality of stages. Correction data is peri... | 03/29/1983 |
| 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 regions, and a buzzer device for sounding, at alarm times,... | 02/15/1983 |
| 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 within the timepiece circuit according to external connect... | 03/16/1982 |
| 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 selective stages of the divider and thereby adding or subtrac... | 11/10/1981 |
| 4282594 | Electronic timepiece An electronic timepiece is equipped with a frequency division ratio adjustment circuit controlled by switch means, for producing a running rate correction signal that is aperiodically added in frequency to the output of a standard frequency oscillator, to... | 08/04/1981 |
| 4270193 | Electronic timepiece An electronic timepiece adapted to perform time correction in response to a train of time correction pulses transmitted from another electronic timepiece. The electronic timepiece comprises a detecting means to detect the train of time correction pulses; ... | 05/26/1981 |
