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Persistent image maker

  • US 6,239,774 B1
  • Filed: 07/06/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 10/31/1995
  • Status: Expired due to Fees
First Claim
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1. An image-creating implement comprising:

  • a plurality of light sources arranged in a one-dimensional matrix, said one-dimensional matrix comprising a vertical column and a plurality of horizontal rows in which each of said horizontal rows has no more than one of said light sources;

    a power supply;

    electronic circuitry adapted to blink each of said light sources at said light source'"'"'s safe maximum current in a manner such that when said matrix is moved an observer thereof will observe a two-dimensional image, wherein the electronic circuitry comprises neither a line driver nor a current limiting device and provides an image_time for each of said light sources within the range from about 30 milliseconds to about 200 milliseconds, said image_time comprising a plurality of display_times, and said electronic circuitry further providing that when a light source is on for a particular display_time that the light source has an LED On time equal to said particular display_time, wherein the light sources and the electronic circuitry are not damaged when said light sources are on for said image time.

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