In Oct 1982 the first CD player hit the shelves Who came up with the idea for codes?

The idea for coding on CDs was developed by a team at Philips and Sony, who collaborated on the creation of the Compact Disc (CD) technology. The coding system used on CDs is known as the Red Book standard, which was jointly developed by Philips and Sony to ensure compatibility and standardization across all CD players and discs. The Red Book standard includes specifications for the physical dimensions of CDs, as well as the encoding and decoding of audio data using Pulse Code Modulation (PCM) techniques.