Matches 1 - 50 out of 73 1 2 >
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7508738 Display device for a watch  
A display device is provided for a watch movement provided with a final gear train intended to drive, at least in a mediated way, means of displaying the time and an energy source driving the final...
7327638 Electronic timepiece  
Using an oscillating unit ( 601 ) that can start oscillation with a low voltage, an oscillation signal (S 1 ) of the oscillating unit ( 601 ) is amplified via a waveform shaping unit ( 603 ), and...
7009914 Electronic clock  
In detecting power generation of an electronic timepiece having a conventional power generating unit, voltage output by the power generating unit is limited by output from a storage unit since the...
6912181 Electronic timepiece with controlled date display updating  
An electronic timepiece without system failure at the time of transfer from the power-saving mode to the display mode is provided. A power-saving control circuit 400 controls drive of a date dial...
6882596 Manual control device for executing functions of an electronic watch  
The manual control device for executing functions of an electronic watch ( 1 ) particularly a diary watch, includes a certain number of sensors (C 1 to C 7 ) wherein one touch sensitive pad of...
6829199 Electronic apparatus, electronically controlled mechanical timepiece, methods of controlling them, program for controlling electronic apparatus, and storage medium  
An electronically controlled mechanical timepiece, which is an electronic apparatus, includes a generator driven by a mainspring to generate electrical energy, and a rotation controlling unit...
6819634 Electronic clock  
When an external switch means ( 1 ) is operated, a setting means ( 4 ) receives an output signal G 1 therefrom and outputs setting signals S for varying the internal resistance of an adjusting...
6816439 Rechargeable electronic watch and driving method of rechargeable electronic watch  
To extend the clock operation duration of a multi-functional rechargeable electronic watch, and to provide a rechargeable electronic watch that would not affect the feeling of use of said...
6785192 Reproduction apparatus and reproduction method  
A reproduction apparatus and a reproduction method by which an error of time information that arises from interruption of power supplied to a timer that manages the term of term-managed contents...
6693852 Electronic device, electronically-controlled mechanical timepiece, and electronic device controlling method  
An electronic device in which a braking torque can be increased while reduction in power generation is suppressed, and in which a rotor is prevented from stopping or rotating at an excessive speed....
6678216 Timepiece using spring as power  
To provide a power accumulation structure of a simple construction, in which a planetary mechanism is not used, for a timepiece using a spring as power. A power accumulation structure of a simple...
6570824 Generator for a timepiece  
Generator of the clockwork type including a stator formed of at least three coils ( 11 a , 11 b , 11 c ) and a rotor formed of two flanges ( 81, 82 ) carried by a shaft ( 5 ) and supporting an even...
6563766 Voltage detecting device, battery remaining voltage detecting device, voltage detecting method, battery remaining voltage detecting method, electronic timepiece and electronic device  
A voltage detection and a remaining battery voltage display for a secondary power source so as to notify the user of the remaining battery voltage of the secondary power source at the optimal...
RE38110 Electronically controlled mechanical timepiece and control method therefor  
An electronically controlled mechanical timepiece includes: a voltage-controlled oscillator ( 25 ) including a generator that uses a rotor ( 12 ) driven by a spring ( 1 a) to rotate, and a brake...
6532195 Clock saver apparatus and methods  
Clock saver apparatus and methods which enable the restoration of clock operations in the event that a power outage is brief and without requiring that an operator reset the clock are described. In...
6466518 Time measurement device  
A time measurement device includes a first motor ( 1300 ) for indicating standard time, a second motor ( 1400 ) for indicating a chronograph, a generator ( 1600 ) which generates driving power for...
6466519 Electronic device, electronic timepiece and power control method  
An electronic apparatus includes a power generator ( 20 ) as a power supply, a capacitor ( 30 ) for accumulating generated power, a logic circuit ( 170 ) driven by the power from the capacitor, and...
6463010 Electronic timepiece and method for controlling the same  
An electronic timepiece comprises a battery, capable of charging, a charging section for charging the battery, a timepiece control circuit performing time keeping operation by using a stored...
6343051 Portable electronic device and control method for the portable electronic device  
A reliable power supply control function in a portable electronic device which includes a limiter circuit, or includes the limiter circuit and a voltage step-up circuit, to reduce power...
6118258 Electrical apparatus supplied by a photo-voltaic power source  
An autonomous low power consumption electrical apparatus that has a supply device (8) comprising a single photo-voltaic cell, an electrical accumulator (7), and a voltage booster (10, 11, TR1, TR3)...
6069846 Electronic clock  
An electronic watch comprises electric power generator (10) for generating electric energy from external energy, electric power storage means (30) for storing the electric energy generated, and...
6061304 Electronic watch  
An electronic watch is provided with an electric power generator for generating electric energy by external energy, electric power charger for charging the electric energy generated by the electric...
6041022 Mechanical-electric energy converter and watch part comprising this energy converter  
6021097 Electronic watch provided with an electrical generator  
5974002 Electronic watch using a thermoelement  
An electronic timepiece comprises a casing formed of a thermally conductive material and having a first outer case portion and a second outer case portion connected together to define a space...
5923619 Generator  
A generator, for miniature power consuming devices in particular, comprises a rotor wheel (4), which is coupled to a driven shaft and which has magnetized poles, a stator (5) having a plurality of...
5889734 Electronic timepiece  
In an electronic timepiece using power supply means consisting of a solar cell and an electric double layer capacitor, whose output voltage varies, as a power supply, a plurality of driving pulse...
5889735 Thermoelectrically powered wrist watch  
A thermoelectriocally powered wristwatch has an endothermic plate affixed to the underside of a case back for absorbing external heat, and a thermal conduction plate for conducting the absorbed...
5798985 Electronic watch and method of driving the same  
An electronic watch comprises a power supply 1 for generating electric energy by using external energy, a booster portion 2 having at least two booster circuits for sequentially repeating charging...
5705770 Thermoelectric module and method of controlling a thermoelectric module  
A thermoelectric module includes a switching circuit for switching the connection between a first thermoelectric element and a second thermoelectric element between series connection and parallel...
5684761 Swinging type power generator  
An improved swinging type generator for use in automatic wrist watches is disclosed. It contains: (a) a base with a center shaft hole, (b) a stator mounted on the base containing at least one layer...
5657297 Clock apparatus having high accuracy  
A clock apparatus has a first clock unit, a backup power supply unit, a second clock unit, and a control unit. The first clock unit is used to count time, and the backup power supply unit is used...
5581519 Analog indicator type electronic timepiece and charging method thereof  
An analog indication type electronic timepiece includes a power generation device for transforming kinetic energy produced by motions of a user into electric energy and for causing the electric...
5532982 Coupling device between a source of mechanical energy and an electrical energy generator in a timepiece  
A coupling device (1) between a source of mechanical energy (2) and a generator of electrical energy (3) comprises an arbor (4) driven by said source of mechanical energy, a cylindrical element (5)...
5517468 Electronic timepiece with thermoelectric element  
In an electric timepiece using a small and thin thermoelectric element wherein a first insulator made of silicon is on the heat absorbing side and a second insulator made of silicon is on the heat...
5500562 Power switch arrangement  
A split battery contact arrangement (10) for a low voltage portable electronic product having a first circuit (18) and second circuit (18) comprises a split positive battery contact having a first...
5339296 Electric alarm clock with battery back-up  
An electric alarm clock is disclosed which operates from a conventional external AC power source but is able to continue timekeeping in the event power from the external source is interrupted. A...
5278806 Wristwatch  
A capacitor, which is charged up by induction currents generated in coils, is used as the current source of the wristwatch. To this end, a rotor, which can rotate about the center of the housing,...
4939707 Electronic wristwatch with generator  
An electronic wristwatch having an electric generator contained internally therein is provided. The generator converts energy from mechanical to electrical energy to drive the electronic...
4886988 Universal stepping motor/gear train module for a wrist instrument  
The invention comprises a universal stepping motor/gear train module for a wrist instrument having a frame plate, a bridge plate attached thereto and spaced therefrom, a stepping motor comprising...
4882717 Charging circuit for an analog electronic timepiece  
A chargeable analog electronic timepiece chargeable by an external A.C. voltage source includes a step motor which includes a driving coil. A motor driving circuit coupled to both terminals of the...
4714352 Electronic device powered by solar cells  
A small electric device powered by solar cells and by a capacitive charge storage element has stable actuation assured during startup with an as yet uncharged capacitor. Startup problems are...
4644246 Electric power supply system for portable miniature size power consuming devices  
An electric power supply system for portable miniature size power consuming devices, comprising an AC generator, a rechargeable battery and a charging device to be fed from the AC generator and...
4529322 Booster circuit for electronic watch elements  
A booster circuit in an electronic watch having: hands for indicating time or a display portion such as a panel for displaying time digitally; a lamp for lighting the display portion by...
4419017 Electronic clock  
A plug-in electronic clock being operated either by a commercial power source in a normal state or by a D.C. power source in case of a power failure, said electronic clock having means for...
4395135 Optional alarm and battery backup system for a talking timepiece  
A talking timepiece which has two operating modes is disclosed. In a first mode, a power supply provides power to a computer and speech processing circuitry and the computer responds to the...
4320477 Energy system for electronic watch  
An energy system for powering an electronic watch having a digital or analog time display, the system comprising a primary power source, such as a thermoelectric generator or solar cell, whose...
4286263 Illuminated changeable-display sign  
An illuminated changeable-display sign has lamps which are visible to viewers and which are arranged in rows and columns, has light emitting diodes which are visible to the operator of that sign...
4234947 Solar battery powered timepiece  
A solar battery powered electronic timepiece of the type wherein a watch glass and a base plate supporting a solar battery are secured in an annular recess in a watch case. The base plate is...
4182110 Electronic wristwatch including auxiliary power supply  
An electronic wristwatch including an auxiliary power supply for energizing at least the timekeeping circuit when the main power supply is being removed for replacement is provided. The wristwatch...
Matches 1 - 50 out of 73 1 2 >