Nuclear-paced solid state wristwatch
阅读：371发布：2023-08-13
专利汇可以提供Nuclear-paced solid state wristwatch专利检索，专利查询，专利分析的服务。并且Disclosed is a solid state wristwatch incorporating a nuclear timing source. A radioisotope such as Radium 226 decays, producing alpha particles that are detected and converted into electrical pulses of constant frequency. The electrical signals are divided in a CMOS binary chain and used to drive a digital time display of light emitting diodes. The watch is powered by a conventional 3 volt battery.，下面是Nuclear-paced solid state wristwatch专利的具体信息内容。
1. A nuclear-powered timekeeping device of sufficiently small size for use as a wristwatch comprising a source of radiant energy impulses of substantially constant frequency, a solid state detector adjacent said source for converting energy from said source into electrical impulses, a binary chain of CMOS diviDer stages coupled to said detector for reducing the frequency of said electrical impulses, a digital time display comprising a plurality of electro-optical elements, and a binary logic circuit coupling said divider to said display elements for selectively energizing said elements in accordance with the output of said divider.
2. A timekeeping device according to claim 1 wherein said logic circuit comprises a plurality of additional CMOS dividers for further reducing the frequency of said electrical impulses to display time in minutes and hours.
3. A timekeeping device according to claim 2 wherein said logic circuit comprises a plurality of gates for selectively energizing said display elements.
4. A timekeeping device according to claim 3 wherein said logic circuit comprises a binary coded decimal to display converter for converting binary coded decimal signals into drive signals for said display elements.
5. A timekeeping device according to claim 4 wherein said display elements are arranged to form a seven-bar segment display and said logic circuit comprises a binary coded decimal to seven-bar segment converter.
6. A timekeeping device according to claim 1 wherein said radiant energy source comprises an alpha emitter, and variable shading means positioned between said emitter and said detector.
7. A timekeeping device according to claim 6 wherein said emitter comprises Radium 226.
8. A timekeeping device according to claim 6 wherein said emitter comprises Americium 241.
9. A timekeeping device according to claim 6 wherein said emitter comprises Plutonium 239.
10. A timekeeping device according to claim 1 wherein said electro-optical elements comprise a plurality of arrays of light-emitting diodes.
11. A timekeeping device according to claim 1 wherein said electro-optical elements comprise a plurality of arrays of liquid crystals.
12. A nuclear-paced time keeping device of sufficiently small size for use as a wristwatch comprising a radioactive alpha emitter, a solid state PN junction detector adjacent said emitter for converting energy from said source into electrical impulses, a collimator with adjustable shading for directing energy from said emitter to said detector, an amplifier and discriminator coupled to said detector, a frequency divider coupled to said detector through said amplifier and discriminator, a logic circuit coupled to the output of said divider, a digital electro-optical time display, a driver coupling said logic circuit to said digital display, a battery, and a manually operated demand switch coupling said battery to said digital display.
13. A timekeeping device according to claim 12 wherein said frequency divider is provided with a preset count terminal for presetting the count of said divider.
14. A timekeeping device according to claim 13 wherein said logic circuit is provided with a set and reset terminal for adjusting the time displayed.
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