Amusement devices: games – Chance devices – Electric or magnetic
Patent
1983-05-10
1986-05-06
Shapiro, Paul E.
Amusement devices: games
Chance devices
Electric or magnetic
283 94, 434121, A63F 900
Patent
active
045867119
ABSTRACT:
A matching card game for supermarket contests and other encoding applications utilizes a positive sheet (10), preferably printed in a newspaper, and valid (16) and dummy (12) negative sheets, preferably made available in random order in the store, e.g., affixed to pads, on the wrappings of products, insertions into products, or printed on displays. The valid negative sheet, when placed over the positive sheet in correct registration, produces a recognizable, winning image (18), while similar superimposition of the dummy negative sheet will not produce any recognizable image (14). The sheets are formed by scanning (22) the image (20) to be encoded in a series of parallel adjacent rows. The positive and dummy sheets are printed as a series of rows of monochromatic, random, uniformly-shaped and sized geometric rectangles or other shapes. The negative sheet is similarly printed, except that in the pattern areas, the random rectangles are the inverse of those on the positive sheet in these areas. The non-pattern areas of all sheets preferably are printed by generating three sets of first random binary bits for these areas (34), generating random remainders of a pseudo-random number modulo a small positive integer, e.g., quaternary bits (36) for these areas, generating three sets of second random binary bits (38, 40, 42), one for each occurrence of a given one of the quaternary bits, modifying the three sets of first random binary bits according to the three sets of second random binary bits (44, 46, 48), respectively, and then printing (54, 60, 64) the pattern areas of the three sheets in accordance with the three modified bit signals.
REFERENCES:
patent: 1028037 (1912-05-01), Lilleberg
patent: 3827726 (1974-08-01), McVoy et al.
patent: 4189353 (1980-02-01), Harriman
IBM Technical Disclosure Bulletin, vol. 24, No. 2, 7-1981.
Newsweek, 10-1978, Gillette $1,000,000 World Series Bonus Offer.
Behavior Research Methods & Instrumentation, 1975, vol. 7, pp. 37-41: "Generation of Random-Dot Stereogratings", by Tyler et al.
Chu Yiu T.
Winters Simon N.
Pressman David
Shapiro Paul E.
Weeks Glenn E.
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