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    • 1. 发明申请
    • Communication service subscription management
    • 通信服务订阅管理
    • US20080214100A1
    • 2008-09-04
    • US11713547
    • 2007-03-02
    • Glenn A. WalkerJoseph R. DockemeyerMichael L. HiattHarry DiamondLinda L. Miner
    • Glenn A. WalkerJoseph R. DockemeyerMichael L. HiattHarry DiamondLinda L. Miner
    • H04H1/00
    • H04H40/90H04H60/15H04H60/80
    • Multiple receivers may be enabled to receive satellite-based digital audio radio (SDAR) services under a single subscription. For example, an SDAR service provider can enable multiple vehicles, a home-based digital radio, or a portable digital radio, singly or in any combination. Multiple receivers transmit information to each other. One receiver is designated as a primary receiver, and the other receivers are designated as secondary receivers. The SDAR service provider transmits a list of associated secondary receivers to the primary receiver. The primary receiver enables the associated secondary receivers to receive SDAR services by placing them in an authorized state. The secondary receivers must periodically communicate with the primary receiver to remain authorized. A secondary receiver that fails to communicate with the primary receiver within a prescribed time period is switched to an unauthorized state. In this unauthorized state, the secondary receiver no longer performs as an authorized receiver.
    • 可以使多个接收器能够在单个订阅下接收基于卫星的数字音频无线电(SDAR)服务。 例如,SDAR服务提供商可以单独或以任何组合启用多个车辆,家庭数字无线电或便携式数字无线电。 多个接收器将信息彼此传输。 一个接收机被指定为主接收机,其他接收机被指定为辅助接收机。 SDAR服务提供商向主接收者发送关联的辅助接收机的列表。 主接收器使相关的辅助接收器能够通过将它们置于授权状态来接收SDAR服务。 辅助接收机必须定期与主接收机通信以保持授权。 在规定时间内不能与主接收机通信的次要接收机被切换到未授权状态。 在这种未授权状态下,辅助接收机不再作为授权的接收机执行。