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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7919787 | Semiconductor device with a light emitting semiconductor die A semiconductor device includes a light emitting semiconductor die mounted on at least one of first and second electrically conductive bonding pads, which are located on a first major surface of a substrate of the device. The light emitting semiconductor die has an ... | 04/05/2011 |
| 7727041 | Method of applying light-converting material and device thereof A light emitting device having a die that includes a light source that generates light of a first wavelength and a layer of phosphor particles covering the die is disclosed. The phosphor particles convert a portion of the light of the first wavelength to light of a ... | 06/01/2010 |
| 7675630 | System and method for selectively setting optical navigation resolution A system and method for selectively setting an optical navigation resolution utilizes a comparison of a comparison displacement value to a threshold value to set the optical navigation resolution to an effective resolution selected from a plurality of effective reso... | 03/09/2010 |
| 7570246 | Method and apparatus for communication using pulse-width-modulated visible light A visible light communications transmitter combines a modulated carrier signal with a pulse from a pulse generator. The carrier signal is modulated according to data read from a buffer during the pulse. ... | 08/04/2009 |
| 7551848 | Photographic light system, imaging device and method for providing different types of photographic light using a single multifunctional light module A photographic light system, imaging device and method for providing different types of photographic light uses a single multifunctional light module to produce the different types of photographic light. The multifunctional light module includes a number of semicond... | 06/23/2009 |
| 7187223 | Comparator with hysteresis In one embodiment, a comparator is provided with a first differential input stage that receives an input voltage and a reference voltage and produces a first differential output, and a second differential input stage that has differential inputs and produces a secon... | 03/06/2007 |
| 7126108 | Photodetector array arrangement for optical encoders An optical encoder utilizes a photodetector array having at least two photodetectors with different surface areas that generate different amounts of photocurrent when they are simultaneously lit by an LED. Because the photodetectors generate different amounts of pho... | 10/24/2006 |
| 7108413 | Sampling for color control feedback using an optical cable Light is mixed within a mixing cavity. Light is transported from the mixing cavity, through an optical cable, to a color sensor. The transported light is sampled by the color sensor. Light color within the mixing cavity is controlled based on information from the tr... | 09/19/2006 |
