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“We are evaluating the situation,” said Chris Aronson, senior vice president of domestic distribution for News Corp.’s 20th Century Fox.

Representatives from Viacom Inc.’s Paramount, Comcast Corp.’s Universal and The Walt Disney Co. did not immediately respond to requests for comment.

One immediate result of the announced change was that RealD shares plunged $1.80, or 14.7 percent, to close at $10.42 in trading Wednesday. RealD supplies technology for about 90 percent of the 3-D screens in the U.S. and is a major supplier of the glasses, which made up about 40 percent of its revenue in the most recent quarter.

RealD spokesman Rick Heineman said the company is fine with any new model, including one in which consumers pay. He compared that system to buying headphones on an airplane. The core profit of the company comes through licensing its technology, he said.

Sony shares rose 12 cents to close at $19.34.