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High Speed A/D Conversion of Video To Gas Panel For Digital TV Simulation Disclosure Number: IPCOM000067087D
Original Publication Date: 1979-Jun-01
Included in the Prior Art Database: 2005-Feb-20

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Thompson, DR [+details]


One of the potential uses for gaseous discharge devices is as flat display panels capable of displaying conventional television (TV) video signals. A method of generating digital halftone images from analog scan data for computer displays is presented in the IBM Technical Disclosure Bulletin 21, 3673-3674 (February 1979). In this technique, the raw analog scanned data is sampled at each picture element (pel) position, and the resultant digital gray level is thresholded against a 16-level matrix comprising 16 steps between black and white. Thus, a cluster of 16 dots is used to provide 16 levels of gray scale, the dots being arranged in predetermined positions within a rectangular 4 x 4 matrix.