System and method for securely checking in and checking out digitized content
US6748539B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00362
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for permitting the rental of digitized content such as music from a kiosk includes a flash memory device that is insertable into the kiosk. The kiosk derives a content key from a media key block and a media ID on the flash memory device, and then encrypts the content using the content key and records the content on the flash memory device. The flash memory device can then be removed and engaged with a player-recorder which decrypts the content and plays the content. When it is desired to check the content back in, the flash memory device is engaged with the kiosk and the content is erased. Importantly, the media ID of the flash memory device is altered during check in, such that if the user saved the content prior to check in, the content, if recorded back onto the flash memory device after check in, could not be decrypted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.