Invention Grant
US07986724B2 Digital audio/video broadcast on cellular systems 有权
蜂窝系统上的数字音频/视频广播

  • Patent Title: Digital audio/video broadcast on cellular systems
  • Patent Title (中): 蜂窝系统上的数字音频/视频广播
  • Application No.: US10483688
    Application Date: 2002-07-12
  • Publication No.: US07986724B2
    Publication Date: 2011-07-26
  • Inventor: Jeffrey Allen CooperKumar Ramaswamy
  • Applicant: Jeffrey Allen CooperKumar Ramaswamy
  • Applicant Address: FR Boulogne-Billancourt
  • Assignee: Rhomson Licensing
  • Current Assignee: Rhomson Licensing
  • Current Assignee Address: FR Boulogne-Billancourt
  • Agent Robert D. Shedd; Robert B. Levy; Jeffrey D. Hale
  • International Application: PCT/US02/22556 WO 20020712
  • International Announcement: WO03/007580 WO 20030123
  • Main IPC: H04B1/00
  • IPC: H04B1/00
Digital audio/video broadcast on cellular systems
Abstract:
A method for providing information to a plurality of wireless mobile communication devices. The method includes dedicating at least one channel of a plurality of spread spectrum data channels as a broadcast channel. The frequency and phase of a carrier signal and of a chip rate clock of the at least one channel are synchronized for each of a plurality of cell transmitters of a respective plurality of base stations. The Information is then broadcast over the at least one dedicated channel from each base station.
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