Signal bleed

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Signal bleed is a term used to describe filters, usually for cable television, not blocking targeted channel as designed. The term came to public awareness as more channels with adult material began to be available on cable television services and, occasionally, children were able to view faint or partial images of adult material on channels that were supposed to be completely blocked.

Signal bleed was discussed in the 1999 U.S. Supreme Court case United States v. Playboy Entertainment Group.