G - Physics – 06 – K
Patent
G - Physics
06
K
354/224, 352/53.
G06K 7/10 (2006.01) H04N 1/053 (2006.01) H04N 1/113 (2006.01)
Patent
CA 1133132
Abstract of the Disclosure The invention relates to an electro-optical system of a type wherein information from an electrical signal is recorded onto a scanned medium. A beam of high intensity light is modulated according to the information content of the signal in the form of a bit stream. The modulated beam is optically formed as a spot. Each facet of the polygon has a reflective side that reflects the spot incident thereon onto the medium to impart the information content of the spot to the medium, the polygon being rotated such that the reflected light is scanned in successive traces by the facets across the medium. The transmission rate of the electrical signal is synchronized to the velocity of the spot produced by each facet across the medium. The synchronization varies the number of bits per second in accordance with a signal that represents the error between the velocity of a spot produced by a facet on the polygon and a predetermined spot velocity, the error signal being separately determined for each facet which comprises the multifaceted polygon.
310010
Sim & Mcburney
Xerox Corporation
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