to ensure that each 8-bit word contained exactly four ones. This form of parity worked well in correcting errors upon decoding. Films distributed with CDS Dick Tracy (1990) (Buena Vista Pictures) Days of Thunder (1990) (Paramount Pictures) Flatliners (1990) (Columbia Pictures) Edward Scissorhands (1990) (20th Century Fox) The Doors (1991) (Carolco Pictures) Hudson Hawk (1991) (TriStar Pictures) Terminator 2: Judgment Day (1991) (Carolco) For the Boys (1991) (20th Century Fox) Final Approach (1991) (Trimark Pictures) Universal Soldier (1992) (Carolco) External links Web-converted version of original CDS brochure Audiovisual introductions in 1990 Film sound production Surround sound Kodak Development organizations