Kane Kramer

Kane Kramer is a British inventor and businessman.wikipedia
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MP3 player

digital audio playerMP3 playersmusic player
He is credited with the initial invention of the digital audio player, in 1979.
In 1981, Kane Kramer filed for a UK patent for the IXI, the first Digital Audio Player.

IPod

iPodsApple iPodiPod Touch
In 2008, Kramer was called as a witness by Apple Inc. to defend itself from charges of patent infringement for its iPod digital audio player.
Kane Kramer applied for a UK patent for his design of a "plastic music box" in 1981, which he called the IXI.

Liquid-crystal display

LCDliquid crystal displayLCD screen
The player was the size of a credit card with a small LCD screen and navigation and volume buttons and would have held data of at least 8 MB of solid-state bubble memory chip with a capacity of 3½ minutes' worth of audio.

Solid-state drive

SSDsolid state drivesolid-state drives
The player was the size of a credit card with a small LCD screen and navigation and volume buttons and would have held data of at least 8 MB of solid-state bubble memory chip with a capacity of 3½ minutes' worth of audio.

Bubble memory

magnetic bubble memory
The player was the size of a credit card with a small LCD screen and navigation and volume buttons and would have held data of at least 8 MB of solid-state bubble memory chip with a capacity of 3½ minutes' worth of audio.

Hard disk drive

hard drivehard diskhard drives
Plans were made for a 10-minute stereo memory card and the system was at one time fitted with a hard drive enabling over an hour of recorded digital music.

Paul McCartney

McCartneyPaulSir Paul McCartney
His first investor was Sir Paul McCartney.

The Guardian

GuardianManchester GuardianThe Manchester Guardian
In a 2004 interview with The Guardian, Kramer stated that the company at the time had "orders worth £60 million" (value at current day) for the device from the recording industry.

Apple Inc.

AppleApple ComputerApple Inc
In 2008, Kramer was called as a witness by Apple Inc. to defend itself from charges of patent infringement for its iPod digital audio player.

Portable media player

media playerportable media playersdigital audio players
British scientist Kane Kramer invented the first digital audio player, which he called the IXI.