In 1979, a 23-year-old British inventor named Kane Kramer sat down with a friend, James Campbell, and sketched a device he called the IXI. It was a matchbook-sized handheld with an LCD screen, forward/back skip buttons, a volume control, and — most improbably for the era of the Sony Walkman — no moving parts. Music would be stored on a solid-state chip. Songs would be delivered digitally from a central library over phone lines to record shops and, eventually, straight to homes.

Kramer filed for a UK patent that year and secured coverage across 120 countries, culminating in UK Patent GB 2115996 (and later US Patent 4,667,088, granted 1987, covering the digital audio distribution system). The specification describes what any modern reader would immediately recognize as an MP3 player and an online music store — right down to on-device track selection via a screen-driven menu.

What the patent actually described:

• A portable player with solid-state semiconductor memory holding compressed digital audio (his initial prototype held about 3.5 minutes; he correctly predicted memory density would compound)
• An LCD display showing track information and menu navigation
• A central music library transmitting encoded audio over telephone lines to authorized retail terminals — and later directly to consumers
• Digital rights management via encrypted authorization codes tied to specific players — the DRM model iTunes would later adopt
• A royalty-tracking system so artists got paid per download

Kramer had every piece of the streaming/download economy on paper in 1979: the device, the store, the encoding, the DRM, and the royalty ledger. He raised money, built a working prototype, and had a real company — IXI Ltd — with Paul McCartney's music publisher on the board.

Then it collapsed. In 1988, at the moment his patent renewals came due, the IXI board fell into a shareholder dispute, and Kramer couldn't scrape together the roughly £60,000 in international renewal fees. The patents lapsed into the public domain. Every idea in them was suddenly free for the taking.

Twenty-two years later, Apple launched the iPod. When Apple was sued by Burst.com over patents covering audio streaming, Apple's own defense filings in 2008 cited Kane Kramer's IXI patent as prior art proving the concept predated Burst. In other words, Apple — the company synonymous with digital music — went to court and formally testified that a British inventor had described the whole system in 1979. Kramer flew to Cupertino to consult for Apple's legal team. He was reportedly paid a modest consultancy fee, but received nothing resembling a royalty on the roughly 450 million iPods Apple would eventually sell.

Why it feels impossibly early: in 1979, a single second of CD-quality audio was larger than the RAM in most computers. Flash memory as we know it didn't exist — Fujio Masuoka wouldn't patent NOR flash until 1980, and NAND flash until 1987. The MP3 codec wouldn't be finalized until 1993. Consumer broadband was a decade and a half away. Kramer wasn't just early on a product — he was early on every enabling technology the product required. His genius was recognizing that music was really just data, and that data would inevitably become small, cheap, and transmittable.

The IXI patent is patent archaeology's cleanest cautionary tale: a complete, correct blueprint for a $200-billion industry, filed by the right person at the wrong moment, and lost to a renewal invoice.