Patent 4,, Optical Mouse. The color of the optical mouse’s LEDs can vary, but red is most common, as red diodes are inexpensive and silicon photodetectors are very sensitive to red light. Variations of the optical mouse have largely replaced the older mechanical mouse design, which uses moving parts to sense motion. A Photographic History of the Integrated Circuit. By describing an optical means that explicitly overcame the limitations of wheels, balls, and rollers used in contemporary computer mice, the optical mouse was anticipated. As computing power grew cheaper, it became possible to embed more powerful special-purpose image-processing chips in the mouse itself. Webarchive template wayback links All articles with unsourced statements Articles with unsourced statements from April Wikipedia articles needing clarification from September Articles containing potentially dated statements from All articles containing potentially dated statements.
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This advance enabled the mouse to detect relative motion on a wide variety of surfaces, translating the movement of the mouse into the movement of the cursor and eliminating the need for a special mouse-pad. While the reconstruction of the image in the document conat application Allen et al. Patent 4, Optical Mouse. Williams and Robert S. The earliest optical mice detected movement on pre-printed mousepad surfaces.
The optical mouse ultimately sold with the Xerox STAR office computer used an inverted sensor chip packaging approach patented by Lisa M.
However, they generally cannot track on glossy and optial surfaces, including some mouse-pads, causing the cursor to drift unpredictably during operation.
Optical mice often used light-emitting diodes LEDs for illumination when first popularized.
COMAT MOUSE OPTICAL M DPI SILVER/BLACKImporto: 7,00 EURO IVA COMPRESA
As of [update] opyical mice had lower average power requirements than their optical counterparts; the power used by mice is relatively small, and only an important consideration when the power is derived from batterieswith their limited capacity. Unlike mechanical mice, whose tracking mechanisms can become clogged with lint, optical mice have no moving parts besides buttons and scroll wheels ; therefore, they do not require maintenance other than removing debris that might collect under the light emitter.
Modern surface-independent optical mice work by using an optoelectronic sensor essentially, a tiny low-resolution video camera to take successive images of the surface on which the mouse operates. Variations of the optical mouse have largely replaced the older mechanical mouse design, which uses moving parts to sense motion.
Optical mice utilizing infrared elements LEDs or lasers offer substantial increases in battery life over visible spectrum illumination. This page was last edited on 9 Novemberat An optical mouse is a computer mouse which uses a light source, typically a light-emitting diode LEDand a light detector, such as an array of photodiodesto detect movement relative to a surface.
Patent 4, Optical Translator Device. Computer mice History of human—computer interaction Video game control methods American inventions.
Optical mice mathematically process these images using cross correlation to calculate how much each successive image is offset from the previous one. A typical implementation by Logitech has four power states, where the sensor is optucal at different rates per second: InfoWorld Media Group, Inc.
The development of the modern optical mouse at Hewlett-Packard Co.
This is the freehand scanning concept used in the HP CapShare handheld scanner. Retrieved from ” https: The first two optical mice, first demonstrated by two independent inventors in Decemberhad different basic designs: Movement can be detected in any of these states; some mice turn the sensor fully off in the sleep state, requiring a button click to wake.
The amount that the edges of one photograph overhang the other represents the offset between the images, and in the case of an optical computer mouse the distance it has moved.
Improved precision of 2D optical navigation, needed for application of optical navigation to precise 2D measurement of media paper advance in HP DesignJet large format printers, was further refined in US Patent 6, awarded in to Raymond G. Smith, and Barclay J. As computing power grew cheaper, it became possible to embed more powerful special-purpose image-processing chips in the mouse itself.
Retrieved 31 December From Wikipedia, the free encyclopedia. The laser illumination enables superior surface tracking compared to LED-illuminated optical mice. Optical mice use image sensors to image naturally occurring texture in materials such as wood, cloth, mouse pads and Formica. Though not commonly referred to as optical mice, nearly all mechanical mice tracked movement using LEDs and photodiodes to detect when beams of infrared light did and didn’t pass through holes in an incremental rotary encoder wheel.
Because optical mice render movement based on an image which the LED or infrared diode illuminatesuse with multicolored mouse pads may result in unreliable performance; however, laser mice do not suffer these problems and will track on such mouxe.
Allen, David Beard, Mark T.