1970  At Philips, Compaan and Pete Kramer complete a glass disc prototype and determine that a
         laser will be needed to read the information.
1971  Microprocessor produced by Intel Digital Delay line used by BBC's studios (first digital audio
1972 Compaan and Kramer produce color prototype of this new compact disc technology.
1973 BBC and other broadcast companies, start installing digital recorders for master recordings.
1977 Mitsubishi, Hitachi & Sony show digital audio disc prototypes at the Tokyo Audio Fair JVC
        Develops Digital Audio Process.
1978 Philips releases the videodisc player Sony sells the PCM-1600 and PCM-1 (digital audio 
        processors) "Digital Audio Disc Convention" Held in Tokyo, Japan with 35 different
        manufacturers. Philips proposes that a worldwide standard be set. Polygram (division of
        Philips) determined that polycarbonate would be the best material for the CD. Decision made
        for data on a CD to start on the inside and spiral towards the outer edge. Disc diameter
        originally set at 115mm. Type of laser selected for CD Players.
1979 Prototype CD System demonstrated in Europe and Japan. Sony agrees to join in 
        collaboration. Sony & Philips compromise on the standard sampling rate of a CD. 44.1 kHz
        (44,100 samples per second) Philips accepts Sony's proposal for 16-bit audio. Reed-Solomon
        code adopted after Sony's suggestion. Maximum playing time decided to be slightly more that
        74 minutes. Disc diameter changed to 120mm to allow for 74 minutes of 16-bit stereo sound
        with a sample rate of 44.1 kHz.
1980 Compact Disc standard proposed by Philips & Sony.
1981 Matsushita accepts Compact Disc Standard Digital Audio Disc Committee also accepts
        Compact Disc Standard. Sharp achieves production of semiconductor laser. Philips & Sony
        collaboration ends.
1982 Sony & Philips both have product ready to go. Compact Disc Technology is introduced to
        Europe and Japan in the fall.
1983 Compact Disc Technology is introduced in the United States in the spring the Compact Disc
        Group formed to help market. CD-ROM Prototypes shown to public 30,000 Players sold in the
        U.S.800,000 CD's sold in the U.S.
1984 Second Generation & Car CD players introduced. First Mass Replication Plant in the United
        States built Portable (i.e., Sony DiscMan) CD Players sold.
1985 Third generation CD Players released. CD-ROM drives hit the computer market.
1986 CD-I (Interactive CD) concept created.3 Million Players sold in U.S.53 Million CD's sold in U.S.
1987 Video CD format created. Allen Adkins of Optical Media International joins with SonoPress in
        Amsterdam and demonstrates a desktop system for pre-mastering CD's (Adkins and Sono 
        Press, produced a replicated CD in less than 24-hours using this system).
1988 CD-Recordable Disc/Recorder Technology Introduced
1990 28% of all U.S. households have CD's. 9.2 million players sold annually in the United States.
        288 million CD's sold annually in the United States. World Sales close to 1 Billion.
1991 CD-I format achieved. CD-Recordable introduced to the Market "QuickTopix" the first CD-R
         pre-mastering Software introduced by Allen Adkins.
1992 CD-R Sales reach 200,000
1996 DVD Technology introduced. Prices of Recorders and CD-R Media go down significantly. High
        Demands cause World-Wide CD-R Media Shortage.
1997 DVD Released. DVD Players/Movies hit consumer market. DVD-R standard created (3.9 Gig).
        Mitsui builds it's first CD-R production plant in the U.S. World-wide shortage ends. Price of
        CD-R media lower than ever imagined.
1998 DVD-RAM, DVD-Recordable systems/equipment hits market.  DVD-Video/ROM authoring
         tools hit the market. CD-R prices continue to drop.
1999 DVD-Video Becomes mainstream. Consumers begin purchasing DVD Players & Movies on a mass level. Most major film studios have titles on DVD.