close this bookVolume 1: No. 09
View the documentNews -- Sony Mini Disc
View the documentNews -- KnowledgeWare
View the documentOpportunities -- AI/CS jobs
View the documentOpportunities -- new research labs
View the documentInformation -- research thesaurus; machine translation; Informix
View the documentWorkshops -- ICIS workshop and journal; TEI text encoding
View the documentTools -- Collate
View the documentDiscussion -- SBIR
View the documentDiscussion -- corporate funding
View the documentQuery -- peer review
View the documentDiscussion -- feudal analogies

Sony has developed a 2.5" CD that can record and play up to 74 minutes of sound. Writing is magneto-optical -- a laser heats a spot so that the magnetic field may be altered. Playback can be done by optical polarity readout or with the intensity-based CD readers now in use. (Proprietary compression algorithms make the discs incompatible with current players, however.) A three-second buffer and resynchronization system in the $300 player permits use by joggers. Commercialization is not imminent, however. [Business Week, 5/27.]