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Publication numberUS3803827 A
Publication typeGrant
Publication dateApr 16, 1974
Filing dateFeb 1, 1973
Priority dateFeb 1, 1973
Also published asCA977981A1, DE2361149A1
Publication numberUS 3803827 A, US 3803827A, US-A-3803827, US3803827 A, US3803827A
InventorsRoberts D
Original AssigneeTime Computer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Solid state electronic wristwatch
US 3803827 A
Abstract
Disclosed is a solid state electronic wristwatch incorporating a calendar display. The same electro-optical elements are used for the calendar display as are used to display time. The principal components of both the time and calendar circuits may be formed on a single large scale integrated circuit chip. The watch is of modular construction for ease of assembly and reliability. Also disclosed is a setting magnet for the watch stored in the watch bracelet.
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Description  (OCR text may contain errors)

United States Patent [191 [111 3,803,827 Roberts Apr. 16, 1974 4] SOLID STATE ELECTRONIC 3,668,861 6/1972 Mitsui 58/50 R WRISTWATCH 3,707,071 12/1972 Walton 58/50 R 3,664,116 5/1972 Emerson 58/50 R X [75] Inventor: Dennis A. Roberts, Washington Primary Examiner-Richard B. Wilkinson [73] Assignee: Time Computer, Inc., Lancaster, Pa. Assistant Examiner-Edith C. S. Jackmon Filed Feb 1 1973 Attorney, Agent, or Firm-LeBlanc & Shur [21] Appl. No.: 328,639 [57] 7 ABSTRACT [52] U 8 Cl 58/4 A 58/58 Disclosed is a solid state electronic wristwatch incor- [51] G04; 19/24 porating a calendar display. The same electro-optical 58] Fie'ld 23 R 50 R elements are used for the calendar display as are used 58/55 1 5 to display time. The principal components of both the time and calendar circuits may be formed on a single [56] Referen es Cited large scale integrated circuit chip. The watch is of c modular construction for ease of assembly and reli- UNITED STATES PATENTS ability. Also disclosed is a setting magnet for the 2,166,742 H1365 Sherwin 58/50 R X watch stored in the watch bracelet.

,328,954 7/1 67 Miller... 3,613,351 10/1971 Walton.... 20 Claims, 38 Drawing Figures 5a 62 FREQUENCY g FREQUENCY DISPLAY I STANDARD CONVERTER ACTUATOR ?AIENTEDAPR 16 m4 SHEET 01. or 19 PATENTEDAPR 16 I974 FIG. 8A

236 OSCILLATOR 56 7 saw m u? 1 SEE FIG. 5B

PATENTEHAPR is 1914 LN DECODER SEE FIG. 8A

sum as or 19 DISPLAY INTENSITY CONTROL SEE FIG. 8C

Y PATENTEDAPR 16 m4 3 803827" SHEET 08BF19 PATENTEUAPR 16 IBM SHEET agamaoazv MTENTED'APR 16 m4 sum 10 or 19 I a I I I l .1

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PATENTEDAPR 16 I974 sum "11 or 19 E dE ' PATENTED APR-16 mu SHEET 12 0F 19 ZATENTEU APR 1 6 1974 SHEET 13 OF 19 FIG. I8

PATEMTEDAPMW agawafizir sum 15 or 19 FIG. 22

PATENTEDAPR 16 m4 sum 17 a? 19 FIG.

FIG. 28

PATENTEDAPR 16 I974 sum 19 0r 1

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3166742 *Mar 22, 1963Jan 19, 1965American Sign & Indicator CoControl for lamp bank displays
US3328954 *Apr 22, 1965Jul 4, 1967Miller Mendell EElectronic digital readout time indicating device
US3613351 *May 13, 1969Oct 19, 1971Hamilton Watch CoWristwatch with liquid crystal display
US3664116 *Apr 6, 1970May 23, 1972Gen ElectricDigital clock controlled by voltage level of clock reference signal
US3668861 *Nov 10, 1971Jun 13, 1972Suwa Seikosha KkSolid state electronic watch
US3707071 *Mar 12, 1971Dec 26, 1972Hamilton Watch CoSolid state timepiece
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3945191 *May 19, 1975Mar 23, 1976Zenith Radio CorporationElectronic timepiece having complementary electro-optical and electro-mechanical displays
US3950940 *Aug 2, 1974Apr 20, 1976Kabushiki Kaisha Suwa SeikoshaElectronic timepiece
US3965466 *Apr 23, 1974Jun 22, 1976Sharp Kabushiki KaishaDigital display
US3968640 *Sep 16, 1974Jul 13, 1976Hughes Aircraft CompanyDigital watch with elastomer housing block and flexible printed circuitry
US3992871 *Oct 9, 1973Nov 23, 1976Kabushiki Kaisha Suwa SeikoshaChronograph wristwatch
US4060971 *Sep 10, 1974Dec 6, 1977Time Computer, Inc.Solid state watch with inertial switch
US4064689 *Apr 7, 1976Dec 27, 1977Citizen Watch Co., Ltd.Electronic timepiece with electro-optical display
US4150535 *Oct 29, 1975Apr 24, 1979Citizen Watch Company LimitedElectronic timepiece
US4184319 *Jul 11, 1977Jan 22, 1980Sharp Kabushiki KaishaDigital display type electronic time piece
US4287585 *Nov 22, 1976Sep 1, 1981Kabushiki Kaisha Suwa SeikoshaChronograph wristwatch
US7428191May 1, 2006Sep 23, 2008Klein Dennis LElectronic timepiece with inverted digital display
Classifications
U.S. Classification368/29, 368/241, 968/878, 968/959, 968/960, 368/300, 968/914, 968/961, 968/957
International ClassificationG04G17/02, G04G9/10, G04G9/00, G04G5/00, G04G9/08, G04G17/00, G04G5/04
Cooperative ClassificationG04G9/087, G04G9/107, G04G9/102, G04G9/0017, G04G17/02, G04G5/04, G04G9/105
European ClassificationG04G9/10D, G04G9/10C, G04G9/10B, G04G9/00C, G04G9/08D, G04G17/02, G04G5/04