The first CD based Walkman, the D-50 (D-5 in some markets), was initially launched in 1984. It was officially called the Discman, and this name has since been used informally to refer to such players. In recent years, Sony has dropped the Discman name and markets all its personal stereos under the Walkman brand.
Later Discman models featured ESP (Electronic Skip Protection), which pre-read the music from the CD into on-board memory and formed a type of buffer to prevent the CD skipping when the player was moved. The technology was since renamed 'G-Protection' and features a larger memory area, providing additional protection against skipping.
Later Discman models featured ESP (Electronic Skip Protection), which pre-read the music from the CD into on-board memory and formed a type of buffer to prevent the CD skipping when the player was moved. The technology was since renamed 'G-Protection' and features a larger memory area, providing additional protection against skipping.