US3838564A - Oscillator - Google Patents

Oscillator Download PDF

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Publication number
US3838564A
US3838564A US00263919A US26391972A US3838564A US 3838564 A US3838564 A US 3838564A US 00263919 A US00263919 A US 00263919A US 26391972 A US26391972 A US 26391972A US 3838564 A US3838564 A US 3838564A
Authority
US
United States
Prior art keywords
low voltage
set forth
constant current
transistor
oscillator system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00263919A
Inventor
S Holcomb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Priority to US264212A priority Critical patent/US3886726A/en
Priority to US00263919A priority patent/US3838564A/en
Priority to US00263818A priority patent/US3828548A/en
Priority to US00263920A priority patent/US3809994A/en
Priority to US00264216A priority patent/US3783308A/en
Priority to PL16233973A priority patent/PL89234B1/pl
Priority to GB2279773A priority patent/GB1435791A/en
Priority to DE2326899A priority patent/DE2326899A1/en
Priority to HUTE000717 priority patent/HU170229B/hu
Priority to CA174,292A priority patent/CA1010971A/en
Priority to CA174,294A priority patent/CA990349A/en
Priority to CA174,308A priority patent/CA1011431A/en
Priority to CA174,309A priority patent/CA975063A/en
Priority to CA174,307A priority patent/CA1006914A/en
Priority to DD17161973A priority patent/DD106484A5/xx
Priority to CA174,322A priority patent/CA999356A/en
Priority to CA174,295A priority patent/CA1006588A/en
Priority to CH888073D priority patent/CH888073A4/xx
Priority to CH888073A priority patent/CH600417B5/en
Priority to US444233A priority patent/US3893017A/en
Application granted granted Critical
Publication of US3838564A publication Critical patent/US3838564A/en
Priority to US05/547,147 priority patent/US4080780A/en
Priority to CA257,423A priority patent/CA1013030A/en
Priority to CA257,422A priority patent/CA1013029A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/04—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • G04G9/126—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals provided with means for displaying at will a time indication or a date or a part thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/012—Modifications of generator to improve response time or to decrease power consumption
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/289—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable of the master-slave type

Definitions

  • An electronic timekeeping device includes bipolar in- 331/ 185 tegrated circuit implemented logic in combination [51] Int. CL... G04b 19/24, 604 3/()(), G04]; 19/30 with a liquid crystal display.
  • a crystal controlled oscil- [58] Field of Search, 58/4 A, 23 R, 23 A, 23 AC, lator provides the system clock signal for controlling 58/23 BA, 50 R; 307/297; 331/185, 186 the logic of the electronic timekeeping device.
  • the oscillator operates from a low voltage power source and [56] R f r Cit d provides a wide frequency tuning range.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Clocks (AREA)
  • Dc-Dc Converters (AREA)
  • Bipolar Integrated Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

An electronic timekeeping device includes bipolar integrated circuit implemented logic in combination with a liquid crystal display. A crystal controlled oscillator provides the system clock signal for controlling the logic of the electronic timekeeping device. The oscillator operates from a low voltage power source and provides a wide frequency tuning range.

Description

United States Patent 9] in] 3,838,564 Holcomb Oct. 1, 1974 [5 OSCILLATOR 3,530,662 9 1970 Schoninger 58/23 R Inventor: Smnley w- Holcomb, Richardson 3,534,544 l0/l970 Oguey et al 58/23 A Tex. Primary Examiner-Edith Simmons Jackmon [73] Asslgnee g hjrstruments Incorporated Attorney, Agent, or Firml-larold Levine; Edward J. a Connors, Jr.; Stephen S. Sadacca [22] Filed: June 19, 1972 [21] Appl. No.: 263,919 ABSTRACT [52] U.S. Cl. 58/23 AC, 58/4 A, 58/5 1), An electronic timekeeping device includes bipolar in- 331/ 185 tegrated circuit implemented logic in combination [51] Int. CL... G04b 19/24, 604 3/()(), G04]; 19/30 with a liquid crystal display. A crystal controlled oscil- [58] Field of Search, 58/4 A, 23 R, 23 A, 23 AC, lator provides the system clock signal for controlling 58/23 BA, 50 R; 307/297; 331/185, 186 the logic of the electronic timekeeping device. The oscillator operates from a low voltage power source and [56] R f r Cit d provides a wide frequency tuning range.
UNITED STATES PATENTS 4 Claims, 48 Drawing Figures 3,518,458 6/1970 Camenzind 307/297 SUPPLY CURRENT REGULATOR FIG. 25 l6 5 l SEC. RESET 1 osc. EL S COUNTER 1- RESET FIGS. 6- FIG-5 6 9 HoURREsET 1-DATE RESET 30 CLOCK SYSTEM U 22 DECODE FIGS. 6-9
I DRIVER DISPLAY FIGS. 6-9
SU PPLY DC/DC CONVERTER FIG. 32
MENIEW sum 01 or 3 4 SEC. RESET ERE COUNTER MIN. RESET DIVIDER 4. FIG. 6 J *HOUR RESET DATE RESET 20 CLOCK SYSTEM U 23 DECODE FIGS. 6-9
' I DRIVER DISPLAY FIGS. 6-9 FI 3 P .DC/DC S 28 SUPPLY CONVERTER FIG. 32
mamww H914 sum 07 or 28;
555 a ma ma 3 .5 mmifim m m c PAIENTEBBBT H914 3.838.584 sum ua nr '28 l I i I l CLEAR CLOCK PRESET |1 |lIl l||| I| l l|llll| l|| Fig, /05
CLEAR PRESET PATENTEB sum an arm PRESET CLOCK REF.
PAIENR at! new sum 10 ur za;
MUOAU Hmmmmm wh HHDQEU mmimo OH m NM I... P a 0 0 Pmmm H914 3mm sum 12 or 28 FROM DIVIDE BY 10 COUNTER ABBCCD'D Fig, /70
PAIENIEIIIIEI I I 3.838.584
sum-1s III 2a I egment i Tl T2 LIQUID CRYSTAL BACK PLANE Q10 I -i- 1 F I A-C INPUT LOGIC INPUT mmmw H814 3.83 .554 sum '1'; nr 2a CLOCK ENABLE CLEA TC IN-TC STATE DIAGRAM CLOCK ENABLE PAIENImum 1mm sum 15 0f 'z a FROM 24 COUNTER E5CED SEGMENT 4/12 Z ECCDEE J L Y TO -I- 24 DEGODER=DRIVERS DISPLA Y KENFED 11974 3.8B8.55 -1 SHEET 1? HF 28 Fl SUPPLY VOLTAGE l 5 H ff REFERENCE RESISTOR A H 1! 40K 2 START I) mm P 1 Ff m aggq i 3 I I 1 13 FROM CURRENT Lil LET I f I SOURCE REFERENCE P+ IS-OLA TION Fig, 29
SUPPLY l 'I.
REFERENCE (0 7 r7 4 I i 28 q\ 5 Fig, 30

Claims (4)

1. A low voltage oscillator system for an electronic wristwatch comprising: a crystal controlled oscillator having complimentary transistors operating from constant current source means having a control element an with the output taken from emitter terminal of one of said complimentary transistors operating in an emitter/follower configuration and feedback to the control crystal taken from a collector terminal of the other of said complimentary transistors, and an output amplifier transistor of the same type as said other of said complimentary transistors operating from another constant current source.
2. A loW voltage oscillator system as set forth in claim 1 including first bias stabilization diode feedback means coupling said collector terminal of said other transistor and the base terminal of said one transistor.
3. A low voltage oscillator system as set forth in claim 2 including second bias stabilization feedback means coupling the output of said output amplifier transistor and the control source means of said constant current sources for said oscillator transistors.
4. A low voltage oscillator system as set forth in claim 3 wherein said second bias stabilization feedback means includes a Schottky diode.
US00263919A 1972-06-19 1972-06-19 Oscillator Expired - Lifetime US3838564A (en)

Priority Applications (23)

Application Number Priority Date Filing Date Title
US264212A US3886726A (en) 1972-06-19 1972-06-19 Electronic time keeping system
US00263919A US3838564A (en) 1972-06-19 1972-06-19 Oscillator
US00263818A US3828548A (en) 1972-06-19 1972-06-19 Liquid crystal drive circuit
US00263920A US3809994A (en) 1972-06-19 1972-06-19 Low power dc-dc converter employing intermittent bursts of blocking oscillations
US00264216A US3783308A (en) 1972-06-19 1972-06-19 Flip-flop element
PL16233973A PL89234B1 (en) 1972-06-19 1973-05-04
GB2279773A GB1435791A (en) 1972-06-19 1973-05-14 Electronic timekeeping system
DE2326899A DE2326899A1 (en) 1972-06-19 1973-05-25 ELECTRONIC TIMING DEVICE
HUTE000717 HU170229B (en) 1972-06-19 1973-05-30
CA174,307A CA1006914A (en) 1972-06-19 1973-06-18 Current source regulator for electronic timekeeping device
CA174,308A CA1011431A (en) 1972-06-19 1973-06-18 Time counting system
CA174,309A CA975063A (en) 1972-06-19 1973-06-18 Oscillator
CA174,292A CA1010971A (en) 1972-06-19 1973-06-18 Electronic time keeping system
DD17161973A DD106484A5 (en) 1972-06-19 1973-06-18
CA174,322A CA999356A (en) 1972-06-19 1973-06-18 Liquid crystal drive circuit
CA174,295A CA1006588A (en) 1972-06-19 1973-06-18 Flip-flop element
CA174,294A CA990349A (en) 1972-06-19 1973-06-18 Dc/dc convertor
CH888073D CH888073A4 (en) 1972-06-19 1973-06-19
CH888073A CH600417B5 (en) 1972-06-19 1973-06-19 ELECTRONIC WATCH, ESPECIALLY ELECTRONIC BRACELET WATCH.
US444233A US3893017A (en) 1972-06-19 1974-02-20 Regulator with bipolar transistors
US05/547,147 US4080780A (en) 1972-06-19 1975-02-05 Electronic time keeping system
CA257,423A CA1013030A (en) 1972-06-19 1975-07-21 Current source regulator for electronic timekeeping device
CA257,422A CA1013029A (en) 1972-06-19 1976-07-21 Current source regulator for electronic timekeeping device

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US26421672A 1972-06-19 1972-06-19
US26382072A 1972-06-19 1972-06-19
US26381972A 1972-06-19 1972-06-19
US00263920A US3809994A (en) 1972-06-19 1972-06-19 Low power dc-dc converter employing intermittent bursts of blocking oscillations
US264212A US3886726A (en) 1972-06-19 1972-06-19 Electronic time keeping system
US00263818A US3828548A (en) 1972-06-19 1972-06-19 Liquid crystal drive circuit
US00263919A US3838564A (en) 1972-06-19 1972-06-19 Oscillator
US444233A US3893017A (en) 1972-06-19 1974-02-20 Regulator with bipolar transistors

Publications (1)

Publication Number Publication Date
US3838564A true US3838564A (en) 1974-10-01

Family

ID=27575302

Family Applications (7)

Application Number Title Priority Date Filing Date
US264212A Expired - Lifetime US3886726A (en) 1972-06-19 1972-06-19 Electronic time keeping system
US00263919A Expired - Lifetime US3838564A (en) 1972-06-19 1972-06-19 Oscillator
US00263818A Expired - Lifetime US3828548A (en) 1972-06-19 1972-06-19 Liquid crystal drive circuit
US00263920A Expired - Lifetime US3809994A (en) 1972-06-19 1972-06-19 Low power dc-dc converter employing intermittent bursts of blocking oscillations
US00264216A Expired - Lifetime US3783308A (en) 1972-06-19 1972-06-19 Flip-flop element
US444233A Expired - Lifetime US3893017A (en) 1972-06-19 1974-02-20 Regulator with bipolar transistors
US05/547,147 Expired - Lifetime US4080780A (en) 1972-06-19 1975-02-05 Electronic time keeping system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US264212A Expired - Lifetime US3886726A (en) 1972-06-19 1972-06-19 Electronic time keeping system

Family Applications After (5)

Application Number Title Priority Date Filing Date
US00263818A Expired - Lifetime US3828548A (en) 1972-06-19 1972-06-19 Liquid crystal drive circuit
US00263920A Expired - Lifetime US3809994A (en) 1972-06-19 1972-06-19 Low power dc-dc converter employing intermittent bursts of blocking oscillations
US00264216A Expired - Lifetime US3783308A (en) 1972-06-19 1972-06-19 Flip-flop element
US444233A Expired - Lifetime US3893017A (en) 1972-06-19 1974-02-20 Regulator with bipolar transistors
US05/547,147 Expired - Lifetime US4080780A (en) 1972-06-19 1975-02-05 Electronic time keeping system

Country Status (5)

Country Link
US (7) US3886726A (en)
CA (8) CA1011431A (en)
CH (2) CH600417B5 (en)
DE (1) DE2326899A1 (en)
GB (1) GB1435791A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937049A (en) * 1973-03-12 1976-02-10 Citizen Watch Co., Ltd. Monitoring system for digital electronic timepiece
US3946591A (en) * 1973-01-10 1976-03-30 Citizen Watch Co., Ltd. Method of and system for detecting the rate of an electronic timepiece
US5604466A (en) * 1992-12-08 1997-02-18 International Business Machines Corporation On-chip voltage controlled oscillator
US20040017268A1 (en) * 2002-07-29 2004-01-29 Cognio, Inc. Voltage-controlled oscillator with an automatic amplitude control circuit

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965666A (en) * 1974-02-19 1976-06-29 Texas Instruments Incorporated Injection logic electronic watch having a current regulated oscillator
US3986199A (en) * 1974-02-19 1976-10-12 Texas Instruments Incorporated Bipolar logic having graded power
JPS50129263A (en) * 1974-04-01 1975-10-13
JPS50142078A (en) * 1974-05-01 1975-11-15
JPS50145269A (en) * 1974-05-14 1975-11-21
JPS5757716B2 (en) * 1974-05-16 1982-12-06 Citizen Watch Co Ltd
IT1039870B (en) * 1974-07-26 1979-12-10 Eurosil Gmbh ARRANGEMENT OF CONNECTIONS FOR AIMING RESPECTIVELY TO ADJUST A DEVICE FOR MEASURING TIME
JPS51101478A (en) * 1975-03-04 1976-09-07 Suwa Seikosha Kk
JPS51104376A (en) * 1975-03-11 1976-09-16 Citizen Watch Co Ltd
US4075826A (en) * 1975-05-19 1978-02-28 Hughes Aircraft Company Timing circuit for digital wristwatch
US4084402A (en) * 1975-05-22 1978-04-18 Hughes Aircraft Company Timing circuit for display sequencing in a digital wristwatch
US4060974A (en) * 1975-07-02 1977-12-06 Citizen Watch Company Limited Method and apparatus for driving electrochromic display device
JPS527279A (en) * 1975-07-07 1977-01-20 Toshiba Corp Electronic clock
US4100563A (en) * 1976-09-27 1978-07-11 Motorola, Inc. Semiconductor magnetic transducers
US4282567A (en) * 1976-10-26 1981-08-04 Texas Instruments Incorporated Modified power transformer for self-oscillating converter regulator power supply
US4156210A (en) * 1976-10-29 1979-05-22 Biometrics Instrument Corp. Resonant transformer push-pull transistor oscillator
US4132996A (en) * 1976-11-08 1979-01-02 General Electric Company Electric field-controlled semiconductor device
US4138671A (en) * 1977-02-14 1979-02-06 Precision Monolithics, Inc. Selectable trimming circuit for use with a digital to analog converter
US4168531A (en) * 1978-01-24 1979-09-18 General Electric Company Real-time clock having programmable time initialization and read-out
US4249123A (en) * 1978-10-25 1981-02-03 Texas Instruments Incorporated Temperature compensated reference voltage regulator
JPS5689790A (en) * 1979-12-24 1981-07-21 Hosiden Electronics Co Channel display unit
US4447776A (en) * 1981-04-24 1984-05-08 The United States Of America As Represented By The Secretary Of The Navy Pulse driver for flux gate magnetometer
US4593279A (en) * 1981-12-24 1986-06-03 Texas Instruments Incorporated Low power liquid crystal display driver circuit
US4500831A (en) * 1982-12-27 1985-02-19 Motorola, Inc. Current source
US4578599A (en) * 1983-06-02 1986-03-25 Motorola, Inc. Flip-flop having improved synchronous reset
US4831281A (en) * 1984-04-02 1989-05-16 Motorola, Inc. Merged multi-collector transistor
US4730127A (en) * 1986-12-22 1988-03-08 Motorola, Inc. Method of matching currents from split collector lateral pnp transistors
US6611377B1 (en) * 2000-07-10 2003-08-26 Intel Corporation Micromechanical diffraction phase grating
US7071749B2 (en) 2002-03-25 2006-07-04 Aeroflex Colorado Springs Inc. Error correcting latch
US20080238619A1 (en) * 2007-03-30 2008-10-02 Broadcom Corporation Active/passive rfid tag
CN104851726B (en) * 2015-05-11 2018-03-30 广东小天才科技有限公司 Key structure and electronic equipment with same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518458A (en) * 1967-06-23 1970-06-30 Mallory & Co Inc P R Decoupling means for integrated circuit
US3530662A (en) * 1967-04-19 1970-09-29 Siemens Ag Electrically controlled timekeeper devices with mechanical oscillators
US3534544A (en) * 1966-12-30 1970-10-20 Centre Electron Horloger Electronic watch

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072155A (en) * 1958-09-19 1963-01-08 Sulzer Ag Thread clamp for weaving machines
US3146418A (en) * 1960-05-11 1964-08-25 Maeda Hisao Variable inductor
US3327244A (en) * 1963-12-27 1967-06-20 Charles W Fay Dc-dc converter including a multivibrator operative at a desired frequency
US3654493A (en) * 1965-06-21 1972-04-04 Sylvania Electric Prod Bistable logic circuits utilizing a charge stored during a clock pulse to change the operating state on the trailing edge of the clock pulse
US3534245A (en) * 1967-12-08 1970-10-13 Rca Corp Electrical circuit for providing substantially constant current
US3577167A (en) * 1968-02-29 1971-05-04 Rca Corp Integrated circuit biasing arrangements
CH484521A (en) * 1968-07-06 1970-01-15 Foerderung Forschung Gmbh Electronic circuit arrangement with at least one integrated circuit
DE1811045C3 (en) * 1968-11-26 1973-11-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Adjustable pot core coil for printed circuits
US3560766A (en) * 1969-01-21 1971-02-02 Sprague Electric Co High speed logic element
US3596462A (en) * 1969-01-31 1971-08-03 Royce Hayes Electronic clock
US3550053A (en) * 1969-05-15 1970-12-22 Eliot Joseph Carlo Welding transformer
CH1572769A4 (en) * 1969-10-21 1972-10-13
CH569320B5 (en) * 1970-03-06 1975-11-14 Rolex Montres
US3612984A (en) * 1970-05-08 1971-10-12 Motorola Inc Negative voltage regulator adapted to be constructed as an integrated circuit
US3699703A (en) * 1970-05-20 1972-10-24 Thomas C Biecker Puppet theater
US3653745A (en) * 1970-06-11 1972-04-04 Rca Corp Circuits for driving loads such as liquid crystal displays
JPS4711874A (en) * 1970-11-05 1972-06-14
GB1343660A (en) * 1970-12-29 1974-01-16 Suwa Seikosha Kk Timepiece
US3629692A (en) * 1971-01-11 1971-12-21 Rca Corp Current source with positive feedback current repeater
US3683270A (en) * 1971-02-22 1972-08-08 Signetics Corp Integrated circuit bilateral current source
US3701249A (en) * 1971-03-12 1972-10-31 Hamilton Watch Co Solid state timepiece with liquid crystal display
US3676712A (en) * 1971-03-22 1972-07-11 Motorola Inc Monolithic non-saturating storage circuit
US3735240A (en) * 1971-10-15 1973-05-22 Motorola Inc Integrated circuit current regulator with differential amplifier control
US3772874A (en) * 1971-12-09 1973-11-20 Princeton Materials Science Display apparatus and chronometer utilizing optically variable liquid
US3753078A (en) * 1972-05-03 1973-08-14 Gen Electric Foldback current control circuit
US3738099A (en) * 1972-06-07 1973-06-12 Seiko Instr & Electronics Digital electronic watch having calendar display arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534544A (en) * 1966-12-30 1970-10-20 Centre Electron Horloger Electronic watch
US3530662A (en) * 1967-04-19 1970-09-29 Siemens Ag Electrically controlled timekeeper devices with mechanical oscillators
US3518458A (en) * 1967-06-23 1970-06-30 Mallory & Co Inc P R Decoupling means for integrated circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946591A (en) * 1973-01-10 1976-03-30 Citizen Watch Co., Ltd. Method of and system for detecting the rate of an electronic timepiece
US3937049A (en) * 1973-03-12 1976-02-10 Citizen Watch Co., Ltd. Monitoring system for digital electronic timepiece
US5604466A (en) * 1992-12-08 1997-02-18 International Business Machines Corporation On-chip voltage controlled oscillator
US20040017268A1 (en) * 2002-07-29 2004-01-29 Cognio, Inc. Voltage-controlled oscillator with an automatic amplitude control circuit
US6700450B2 (en) * 2002-07-29 2004-03-02 Cognio, Inc. Voltage-controlled oscillator with an automatic amplitude control circuit

Also Published As

Publication number Publication date
CA1006914A (en) 1977-03-15
CA999356A (en) 1976-11-02
CA1010971A (en) 1977-05-24
CH888073A4 (en) 1977-07-15
US3828548A (en) 1974-08-13
CA975063A (en) 1975-09-23
US3893017A (en) 1975-07-01
US3886726A (en) 1975-06-03
CH600417B5 (en) 1978-06-15
DE2326899A1 (en) 1974-01-10
CA1013030A (en) 1977-06-28
CA1006588A (en) 1977-03-08
US3783308A (en) 1974-01-01
US4080780A (en) 1978-03-28
CA990349A (en) 1976-06-01
GB1435791A (en) 1976-05-12
US3809994A (en) 1974-05-07
CA1011431A (en) 1977-05-31

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