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7583565 |
Electronic timepiece
To be able to promote oscillation start characteristic while having a simple constitution and maintaining low power consumption. In starting to oscillate an oscillation circuit, a capacitor for...
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7472032 |
Adaptive multi-axis sensor array
A sensor array made up of 2n piezoelectric oscillators (preferably paired quartz oscillators) is provided in which n equals the number of axes of interest and each one of the pairs of oscillators...
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7046584 |
Compensated ensemble crystal oscillator for use in a well borehole system
A compensated ensemble crystal oscillator clock system for use in a well borehohe system. The clock system includes preferably four quad compensated clocks, a compensated temperature sensor, and...
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6147564 |
Oscillation circuit having electrostatic protective circuit
An oscillation circuit including an electrostatic protective circuit connected between a signal path and this constant voltage V reg . It comprises a first electrostatic protective circuit portion...
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5325074 |
Oscillator with supply voltage changeover according to activated and disabled states of a microcomputer
A microcomputer in which an oscillating circuit provided therein is activated both when the microcomputer is in an activated state and when it is in a disabled state is provided with a changeover...
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5267379 |
Method of fabricating surface mountable clock oscillator module
A crystal controlled clock oscillator resin encapsulated in a surface mount device (SMD) package incorporates on a lead frame a crystal oscillator, an integrated circuit, a power supply filter...
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5218694 |
Dual selection system for reference frequency for use in a clock
A dual selection system for a reference frequency for use in a clock comprising a microcomputer for controlling the whole system and outputting a switching signal and frequency-demultiplying...
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5172349 |
Electronic timepiece with analog display
The timepiece of this invention comprises an electromagnetic motor (100) the stator (2) of which is flat and at least partially covered by a reinforcement plate (68) of non-magnetic material or, if...
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4680514 |
Motor
The present invention relates to a motor for driving a clockwork. A rotatably supported rotor 1 has diametrically opposite permanent-magnet poles. A multi-phase coil arrangement is furthermore...
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4644445 |
Resin mounting structure for an integrated circuit
This invention describes an improved resin mounting structure for use with an integrated circuit. An integrated circuit chip is affixed to a circuit substrate which has a hole. Circuit patterns...
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4641109 |
CMOS crystal controlled oscillator
A CMOS crystal controlled oscillator includes a CMOS inverter composed of series connected MOS FETs and a crystal connected between signal input an output nodes of the inverter. First and second...
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4618837 |
Low-power consumption reference pulse generator
A reference pulse generator comprises a quartz crystal oscillator, a frequency divider connected to the oscillator for frequency dividing the oscillator output, and a constant current generator...
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4600898 |
One-pin crystal oscillator
A one-pin crystal oscillator 20 is designed to be used as a clock generator for digital integrated circuits. Unlike the prior art, this oscillator requires only one package pin to connect the...
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4459565 |
Low current electronic oscillator system
A low current electronic oscillator system includes an oscillator tuning element, such as a piezoelectric crystal, operable at a predetermined frequency and an oscillator control circuit for...
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4427302 |
Timekeeping signal source for an electronic timepiece
A timekeeping signal source for an electronic timepiece produces a highly accurate timekeeping signal which is stable in frequency with respect to both temperature variations and long-term drift....
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RE31402 |
Electronic timepiece
An electronic timepiece which includes a time reference base signal generator, which generates a signal which is used to count time, and is compensated in its frequency in order to have the...
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4405906 |
Low power consumption C-MOS oscillator
A C-MOS oscillator circuit having input and output terminals adapted to be connected to a resonator and two active MOS transistors of complementary types connected in series between the supply...
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4387350 |
Watch circuit with oscillator gain control
A watch circuit arrangement for conserving battery power includes a feedback connection between the crystal oscillator of the watch circuit and the display voltage generator which is responsive to...
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4387349 |
Low power CMOS crystal oscillator
A two transistor CMOS inverter has the two transistor gates coupled together by a coupling capacitor. D-C gate bias is supplied to each transistor through high value resistors. The P-channel...
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4360789 |
Very low current pierce oscillator
A very low current Pierce oscillator has two pairs of complementary field-effect transistors (FET's) and a two-terminal quartz crystal. The gates of the first complementary FET pair are coupled...
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4358839 |
Absolute digital clock system
An absolute digital clock system which is capable of counting absolute time despite the disruptive effects of a nuclear event, or other disturbance, on the electronic circuitry of the system. The...
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4346350 |
FET Quartz oscillators
A quartz crystal oscillator for a timepiece including a complementary field effect transistor (FET) pair, wherein one field effect transistor is constant current-biased and the other field effect...
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4325036 |
Temperature compensating circuit
Temperature compensating circuit for an electronic timepiece having two piezo electric resonators having different frequency-temperature characteristics. Two piezo electric resonators are a major...
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4321562 |
Crystal oscillator circuit capable of changing the number of inverter stages coupled in series
A single-stage inverter forming a closed loop together with a crystal resonator fails to provide sufficient gain and hence, power consumption becomes high during stable oscillation. If inverters...
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4307354 |
Crystal oscillator circuit having rapid starting characteristics and a low power consumption
An improved oscillator circuit utilizes an inverter which includes a pair of series connected MOS-FETs of differing conductivity types. A switching circuit is operable to supply the gate bias...
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4242611 |
Methods and apparatus for providing ultra-stable frequency standards and clocks
Improved clocks and frequency standards are provided through the use of single crystals having a mass of the order of kilograms maintained at temperatures of the orders of few degrees Kelvin which...
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4219754 |
Temperature compensation by positioning of plural piezoelectric vibrators in an electronic wristwatch
In an electronic wristwatch having a watch body an a plurality of electronic vibrators having frequency-position characteristics, the frequency-temperature characteristic of the standard signal...
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4218661 |
C-MOS crystal oscillator including circuit for temporarily increasing closed loop gain
An oscillator circuit wherein the impedance at the output terminal can be selectively decreased for a short period of time to thereby increase the closed loop gain is provided. The oscillator...
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4199726 |
Digitally tunable integrated circuit pulse generator and tuning system
An integrated circuit pulse generator which may be externally digitally conditioned to provide an output signal at a frequency falling within a predetermined range of signal frequencies...
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4177631 |
Small-sized quartz crystal wristwatch
A small-sized electronic wristwatch assembly, wherein a support plate is constructed and arranged to position the operative elements of the wristwatch to reduce the size thereof is provided. The...
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4157647 |
Hand reversing system for an electronic timepiece
In an analogue electronic timepiece the hands are moved by a stepping motor driven by a time standard signal supplied from a generating circuit comprising a quartz oscillator. In order to amend the...
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4157007 |
Asymmetric digital watch module
An electronic watch module includes a circuit board having all the electronic watch components including a plurality of LED's and a CMOS integrated circuit device mounted on one side thereof...
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4148181 |
System for controlling the striking mechanism of a timepiece
A first contact arm on the minute shaft of a clockwork switches, once every 0 minutes, the mode of energization of an electronic gating circuit with two sections in the inputs of an inverting...
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4148183 |
Supporting structure for quartz oscillator
A supporting structure for a quartz oscillator having terminal pins extending from one end portion of the oscillator in an electronic timepiece having a circuit substrate supporting the one end...
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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...
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4145872 |
Electronic watch
An electronic battery-powered watch including an oscillator followed by a chain of frequency divider stages, said chain being composed of two parts with an interface circuit between said two parts,...
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4145617 |
Control circuit for providing time selected application of A.C. power
A solid-state programmable control circuit provides multiple time selected application of A.C. power to one or more utilization circuits or devices. The control circuit uses a crystal controlled...
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4144706 |
Alarm watch with remote sonic generator
An alarm device comprises a wrist watch which includes timing and alarm setting elements with a separate alarm box containing a sensor and sonic generator alarm. When the alarm feature is to be...
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4143507 |
Battery operated electronic watch
A battery operated watch includes an actuator mechanism adapted to actuating indicator hands of the watch. The actuating mechanism includes a gear train adapted to drive indicator hands, a motor...
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4142287 |
Electrical devices such as watches and method of construction thereof
A method of making electrical devices, and the electrical devices made thereby, comprising the steps of: stamping from a sheet of metal a pattern of conductors configured to connect circuit...
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4142161 |
Crystal oscillator
A crystal-controlled oscillator of integrated circuit design, comprising, a three-stage direct-coupled amplifier employing insulated gate field-effect-transistors and overall resistive negative...
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4141209 |
Crystal controlled oscillator and method of tuning same
A network of impedance elements comprising combinations of resistors and capacitors in which the impedance of the network is modified by the selective destruction of the individual elements of the...
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4133169 |
Electronic circuit for a quartz crystal watch
An electronic timepiece havng an integrated electronic circuit including a quartz crystal oscillator, connected to a multi-stage divider, which divider supplies various outputs of various...
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4117421 |
Crystal oscillator with reduced power consumption
A crystal-controlled oscillator having a switching transistor connected in series with the crystal tank circuit and amplifier of the oscillator. Power consumption is reduced by minimizing the tank...
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4107625 |
Transistor crystal oscillator which may be paired for generating a beat frequency
An oscillator circuit comprising a transistor, a piezoelectric element and a D.C. source, such as a battery, said transistor being common collector mounted and said piezoelectric element being...
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4104862 |
Apparatus for generating an alarm sound
In apparatus for generating an alarm sound especially for small watches, all functions of the alarm are controlled by integrated circuitry which detects the state of a common connection point...
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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...
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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...
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4099073 |
Four-level voltage supply for liquid crystal display
A power supply circuit supplies a liquid crystal energizing circuit with desired potentials for the purposes of energizing a liquid crystal display in accordance with combinations between first,...
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4095407 |
Oscillating and dividing circuit having level shifter for electronic timepiece
An oscillation and dividing circuit having a level shifter for an electric timepiece comprises an oscillating circuit, a multi-stage dividing circuit for dividing the frequency of the oscillating...
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