The Broadcasting Technology Association (BTA) has been elaborating specifications of the television programs timer recording system by Japanese teletext since 1991. BTA made a rule "BTA T-003" in July, 1993. These specifications aim at detemining the presentation form and the transmission method of television programs in the system for television programs timer recording by Japanese teletext. These specifications shall be applied to teletext programs, the presentation form, the transmission method and receivers with built-in teletext.
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