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    Non-uniform multi-beam satellite communications method
    2.
    发明授权
    Non-uniform multi-beam satellite communications method 有权
    非均匀多波束卫星通信方式

    公开(公告)号：US06456846B2

    公开(公告)日：2002-09-24

    申请号：US09942340

    申请日：2001-08-29

    申请人： John L. Norin ,  Sudhakar Rao ,  Paul Regulinski ,  Romulo Pontual

    发明人： John L. Norin ,  Sudhakar Rao ,  Paul Regulinski ,  Romulo Pontual

    IPC分类号： H04Q720

    CPC分类号： H04B7/2041 ,  H04B7/18523

    摘要： A satellite broadcast system and method, particularly useful for television signals, allows for local as well as nationwide broadcast service by allocating greater satellite resources to the more important local service areas. This is accomplished by broadcasting a, non-uniform pattern of local service beams and designing the system to establish different service area priorities through factors such as the individual beam powers, sizes, roll-off characteristics and peak-to-edge power differentials. Frequency reuse is enhanced by permitting a certain degree of cross-beam interference, with lower levels of interference established for the more important service areas.

    摘要翻译： 对于电视信号特别有用的卫星广播系统和方法允许通过将更多的卫星资源分配给更重要的本地服务区域来进行本地和全国的广播服务。 这是通过广播本地业务波束的不均匀模式和设计系统来实现的，以通过诸如各个波束功率，大小，滚降特性和峰值到边缘功率差的因素来建立不同的服务区域优先级。 通过允许一定程度的横梁干扰，为更重要的服务区域建立较低的干扰水平来增强频率重用。

    METHOD AND APPARATUS FOR FILE SHARING OF MISSING CONTENT BETWEEN A GROUP OF USER DEVICES IN A PEER-TO-PEER NETWORK
    9.
    发明申请
    METHOD AND APPARATUS FOR FILE SHARING OF MISSING CONTENT BETWEEN A GROUP OF USER DEVICES IN A PEER-TO-PEER NETWORK 有权
    用于在对等网络中的一组用户设备之间丢失内容的文件共享的方法和装置

    公开(公告)号：US20080253564A1

    公开(公告)日：2008-10-16

    申请号：US11876832

    申请日：2007-10-23

    申请人： Raynold M. Kahn ,  Romulo Pontual ,  Robert G. Arsenault

    发明人： Raynold M. Kahn ,  Romulo Pontual ,  Robert G. Arsenault

    IPC分类号： H04N7/167 ,  H04N7/20

    CPC分类号： H04L67/104 ,  H04N7/20 ,  H04N21/2347 ,  H04N21/26613 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4622 ,  H04N21/4788 ,  H04N21/6143

    摘要： A communication system 100 includes a group of user devices, a first device separate from the group of user devices, a first satellite, a peer-to-peer network 130 in communication with the user devices and the satellite 106 and a content delivery network 120 in communication with the user devices. The content delivery network encrypts the content in response to a first encryption-decryption information and communicates the content to the plurality of user devices through a satellite. At each of the plurality of the group of user devices the content is encrypted in response to a second encryption-decryption information. A first user device communicates a content request to the group of user devices. At least one of the group of user devices communicates the content to the first user device through the peer-to-peer network. The first user device requests the encryption-decryption information from a content delivery network through a terrestrial network. The content delivery network 120 communicates the encryption-decryption information to the first user device through the terrestrial network. The first user device decrypts the content in response to the encryption-decryption information.

    摘要翻译： 通信系统100包括一组用户设备，与用户设备组分离的第一设备，第一卫星，与用户设备和卫星106通信的对等网络130以及内容传送网络120 与用户设备通信。 内容递送网络响应于第一加密解密信息加密内容，并通过卫星将内容传送给多个用户设备。 在所述多个所述用户设备组中的每一个上，响应于第二加密解密信息对所述内容进行加密。 第一用户设备将内容请求传送到用户设备组。 该组用户设备中的至少一个通过对等网络将内容传送到第一用户设备。 第一用户设备通过地面网络从内容传送网络请求加密解密信息。 内容递送网络120通过地面网络将加密解密信息传送给第一用户设备。 第一用户装置响应于加密解密信息解密内容。