Janus (DRM)
From Wikipedia, the free encyclopedia
Janus is the codename for portable version of Windows Media DRM for portable devices, whose marketing name is Windows Media DRM for Portable Devices (or in short form WMDRM-PD) introduced by Microsoft in 2004 for use on portable media devices which store and access content offline. Napster To Go was the first online music store to require the Janus technology. Supporting Janus often implies that the device also make use of the Media Transfer Protocol (MTP).
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[edit] Characteristics
To support Janus devices must support:
- Secure time
- License storage for content items
- Meters
All these are supported by way of challenge-response authentication commands.
[edit] Stores that require Janus on portable devices
- AOL Music Now
- Napster To Go
- F.Y.E. Download Center
- Y! Music Service
- Musicmatch On Demand Portable
- Rhapsody To Go
- Ruckus
- URGE
- Virgin Digital
[edit] Portable devices that use Janus
- Audiovox SMT 5600 Smartphone
- Toshiba Gigabeat S
- Cowon iAudio X5 (as of firmware 2.11b1)
- Creative Zen Portable Media Center
- Creative Zen Micro
- Creative Zen MicroPhoto
- Creative Zen Touch (since firmware version 2.11.01, released December 1, 2005)
- Creative Zen Sleek
- Creative Zen Vision:M
- Dell DJ 20GB (Gen 2)
- Dell DJ 30GB
- Dell Pocket DJ
- iRiver Clix
- iRiver H10
- iRiver H320
- iRiver H340
- iRiver Portable Media Center-120
- Samsung YH-925 (Not Australian or European version as you lose onboard radio if you upgrade the firmware)
- Samsung YH-999 Portable Media Center
- Samsung YP-T7Z
- Samsung YP-U2JXB/W
- Palm OS devices using Pocket Tunes software
- Archos AV700
- Archos AV500
- Archos Gmini402
- All Windows Mobile devices running Windows Media Player 10
[edit] Future Janus-enabled Portable Devices
- Creative Zen Xtra (starting with firmware version 2.10.03, released November 9, 2005)
- Rio Carbon
- Samsung YH-920 (no longer supported)
- Samsung YH-820
- Archos AV700
- Archos AV500
- Archos Gmini402
