||Richard W. Hamming publishes
information about error detection/correction codes. It would be
impossible for CD's to work without error correction.
||Invention of the Laser.
Stereo LP's produced.
Integrated Circuit introduced by Texas Instruments
||Computer Music experiments take place
at major laboratories.
I.S. Reed and G. Soloman publish information on multiple error
correction codes. These come to be known as the "Reed-Solomon" Codes
which are the codes used for encoding and reading CD's.
Working Laser produced.
||NHK Technical Research Institute
demonstrates a 12-bit PCM digital audio recorder with a 30 kHz (30,000
times per second) sampling rate. The digital recording goes onto a
high-grade video tape.
||Sony introduces it's 13-bit PCM
digital recorder at a 47.25 kHz (47,250 time per second) sampling rate.
The digital recording is sent to a 2" video tape.
Klass Compaan, a Dutch physicist comes up with the idea for the Compact
||At Philips, Compaan and Pete Kramer
complete a glass disc prototype and determine that a laser will be
needed to read the information.
||Microprocessor produced by Intel
Digital Delay line used by BBC's studios (first digital audio device).
||Compaan and Kramer produce colour
prototype of this new compact disc technology
||BBC and other broadcast companies
start installing digital recorders for master recordings.
||Mitsubishi, Hitachi & Sony show
digital audio disc prototypes at the Tokyo Audio Fair.
JVC Develops Digital Audio Process
||Philips releases the video disc player
Sony sells the PCM-1600 and PCM-1 (digital audio processors)
"Digital Audio Disc Convention" Held in Tokyo, Japan with 35 different
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.
||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
||Compact Disc standard proposed by
Philips & Sony.
||Matsushita accepts Compact Disc
Digital Audio Disc Committee also accepts Compact Disc Standard.
Sharp achieves production of semiconductor laser.
Philips & Sony collaboration ends.
||Sony & Philips both have product ready
Compact Disc Technology is introduced to Europe and Japan in the fall.
||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.
||Second Generation & Car CD players
First Mass Replication Plant in the United States built.
Portable (i.e., Sony DiscMan) CD Players sold.
||Third generation CD Players released.
CD-ROM drives hit the computer market.
||CD-I (Interactive CD) concept created.
3 Million Players sold in U.S.
53 Million CD's sold in U.S.
||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 SonoPress, produced a replicated CD in less than 24-hours
using this system).
||CD-Recordable Disc/Recorder Technology
||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
||CD-I format achieved.
CD-Recordable Introduced to the Market
"QuickTopix" the first CD-R pre-mastering Software introduced by Allen
||CD-R Sales reach 200,000
||DVD Technology Introduced.
Prices of Recorders and CD-R Media go down significantly.
High Demands cause World-Wide CD-R Media Shortage.
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.
systems/equipment hits market.
DVD-Video/ROM authoring tools hits the market.
CD-R prices continue to drop.
||DVD-Video Becomes main stream.
Consumers begin purchasing DVD Players & Movies on a mass level.
Most major film studios have titles on DVD.
DIVX Dies (DIgital Video eXpress).
Second Generation DVD Burners.
4.7 Gig DVD-R Media Developed.