This isn't the first time Facebook has tried to create technology.

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Ottens' team combined the RCA audio cassette format and Peter Goldmark's tape in their product. In 1963, Philips introduced the compact cassette at the Berlin Radio Show.



It had a rectangular plastic case measuring 10 by 6 by 1.2 cm, inside was a tape 3.81 mm wide, which allowed recording for up to 30 minutes on each side.

The cassette did have one drawback: the tape could unwind. This could iran number data be fixed with a regular pencil: stick it into the reel and wind it to return the tape to its place.

Market boom
Sony also planned to create a global cassette standard. The company was looking for a partner for joint development, choosing between the German manufacturer Grundig and Philips. Sony liked the format of Ottens' cassette, which he presented at the exhibition, and the company decided to cooperate with Philips.

However, the companies did not agree on royalties: Philips offered to pay first 25 yen for each unit sold, then 6, but Sony refused. Then Philips patented the technology and made it free and available to all manufacturers. The format began to gain popularity quickly and soon became the world standard.

In the early 1960s, the 8-track cartridge was developed in the United States , which became the main competitor to the compact cassette. By the end of the 1970s, it had lost popularity to the cassette: cartridges were larger, did not have a recording function, and could not be rewound.