Apparatus for generating an image from a digital video signal

Details Apparatus for generating an image from a digital video signal Apparatus for generating an image from a digital video signal

H - Electricity

04

N

350/9

H04N 1/40 (2006.01) H04N 1/405 (2006.01)

Patent

CA 1313703

- 32 - ABSTRACT OF THE DISCLOSURE An apparatus for generating a high quality image from à dlgital viaeo signal incluàes a system for gamma cc,rrecting the digital video signal with a digital look up talble ana for converting the resultant digital signal to an analog viàeo signal. Another circuit generates a triangular wave reierence pattern signal and a comparator compares the analog video signal with the triangular wave reference pattern signal to form a pulse-width-modulated signal. A raster scanning print engine producing, for example, a laser beam, scans over a recording medium in accordance with the pulse-width-modulated signal, thereby forming an image of high quality on the recording medium of a print engine. This apparatus can also be used with an analog video signal by first converting the analog video signal to a digital video signal with an analog to digital converter. 0621%

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