fbpx
Wikipedia

Janus (DRM)

December 15, 2023

Janus was the codename of a version of Windows Media DRM primarily for portable devices, whose marketing name was Windows Media DRM for Portable Devices (or in short form WMDRM-PD). It was 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 makes use of Media Transfer Protocol (MTP).

Janus initially required supporting devices to not support non-Microsoft audio formats such as Ogg Vorbis, but this requirement was later removed.[1]

Characteristics edit

To support Janus, devices must support:

  • Secure time
  • License storage for content items
  • Meters

All of these are supported by way of challenge–response authentication commands.

Stores that required Janus on portable devices edit

Main article: Microsoft PlaysForSure § Content providers that offer PlaysForSure-certified audio

Devices that used Janus edit

See Also edit

Janus, former KGB spy and antagonist in IO Interactive's 2018 game

References edit

  1. ^ Greene, Thomas (2006-09-05). "Judge blasts MS bid to monopolize music devices". The Register. Retrieved 2007-01-05.

External links edit

  • U.S. Patent 7,010,808
  • Nokia N72

December 15, 2023
janus, janus, codename, version, windows, media, primarily, portable, devices, whose, marketing, name, windows, media, portable, devices, short, form, wmdrm, introduced, microsoft, 2004, portable, media, devices, which, store, access, content, offline, napster. Janus was the codename of a version of Windows Media DRM primarily for portable devices whose marketing name was Windows Media DRM for Portable Devices or in short form WMDRM PD It was 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 makes use of Media Transfer Protocol MTP Janus initially required supporting devices to not support non Microsoft audio formats such as Ogg Vorbis but this requirement was later removed 1 Contents 1 Characteristics 2 Stores that required Janus on portable devices 3 Devices that used Janus 4 See Also 5 References 6 External linksCharacteristics editTo support Janus devices must support Secure time License storage for content items MetersAll of these are supported by way of challenge response authentication commands Stores that required Janus on portable devices editMain article Microsoft PlaysForSure Content providers that offer PlaysForSure certified audioDevices that used Janus editMost BlackBerry OS devices Audiovox SMT 5600 smartphone Toshiba Gigabeat S Cowon iAudio X5 as of firmware 2 11b1 Cowon iAudio U3 Creative Zen portable players except Stone and Stone Plus Dell DJ 20GB Gen 2 Dell DJ 30GB Dell Pocket DJ iriver Clix iriver H10 series with MTP firmware only iriver H320 US version only after upgrading to EU KR JP firmware DRM capabilities are lost iriver H340 US version only after upgrading to EU KR JP firmware DRM capabilities are lost iriver PMC 120 Portable Media Center Samsung YH 925 not Australian or European version as onboard radio is lost if firmware is upgraded Samsung YH 999 Portable Media Center Samsung YP T7Z Samsung YP U2JXB W Palm OS devices running Pocket Tunes Deluxe software Archos 404 Archos 504 Archos 604 Archos 604 Wi Fi Archos AV700 Archos AV500 Archos Gmini402 Archos Gmini500 All Windows Mobile devices running Windows Media Player 10 Nokia N72 Nokia N91 TrekStor vibez Microsoft Zune though incompatible with the PlaysForSure stores Sandisk Sansa Popcorn Hour C 200 All Roku DVP devicesSee Also editJanus former KGB spy and antagonist in IO Interactive s 2018 gameReferences edit Greene Thomas 2006 09 05 Judge blasts MS bid to monopolize music devices The Register Retrieved 2007 01 05 External links editU S Patent 7 010 808 Nokia N72 Retrieved from https en wikipedia org w index php title Janus DRM amp oldid 1178311277, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.