Literary matter, periodicals, maps, photographs, works of art, textile and other designs, sound recordings, musical compositions, photoplays, and radio and television programs are among the commodities that may be copyrighted. Material for copyright in the United States must be registered and deposited with the Library of Congress. The law makes special provision for the transmission of copyright material over cable television, jukeboxes, and public broadcasting stations. It also specifies circumstances under which the reproduction of copyrighted works by libraries and archives is permissible. Since 1980, computer software has been eligible for the same copyright protection as printed matter, and in 1984, a ten-year period of copyright protection was extended to semiconductor chips. The Supreme Court ruled in 1987 that neither the home use of television video recorders nor their manufacture violated the copyright laws.
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The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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