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    • 5. 发明申请
    • REPROGRAMMABLE SUBSCRIBER TERMINAL
    • 可扩展的订阅者终端
    • US20070234434A1
    • 2007-10-04
    • US11758271
    • 2007-06-05
    • Kinney BaconR. HamanDavid LettRobert BankerMichael Harney
    • Kinney BaconR. HamanDavid LettRobert BankerMichael Harney
    • G06F1/00
    • H04N7/1675G06F8/60H04N5/44H04N5/445H04N5/44504H04N5/44543H04N5/45H04N5/60H04N7/025H04N7/03H04N7/06H04N7/08H04N7/088H04N7/163H04N7/165H04N7/173H04N21/4181H04N21/4184H04N21/4432H04N21/4435H04N21/4586H04N21/47202H04N21/4884H04N21/6547H04N21/8166
    • A reprogrammable subscriber terminal of a subscription television service which can have the control program code of its control processor modified by downloading new program code from the headend. The control processor stores a boot program in an internal read only memory. Upon start up and resets, the boot program determines whether the control program should be changed from a command sent from the headend. The command, termed a parameters transactions, includes the number of expected download program code transactions required to complete the control code modification, the memory space areas where the code is to be loaded, and the channel over which the download program code transactions are to be transmitted. The channel is tuned and when the boot program receives all the download program code transactions accurately and stores them, the boot program will cause the control program to be restarted at a selected address of the new or modified control program code which has been downloaded. The boot program may download code to different configurations of subscriber terminals including those with Flash EPROM or extended memories from plug-in expansion modules.
    • 订阅电视服务的可重新编程用户终端,其可以通过从头端下载新的节目代码来修改其控制处理器的控制程序代码。 控制处理器将引导程序存储在内部只读存储器中。 启动和复位时,引导程序确定是否应该从头端发送的命令更改控制程序。 称为参数事务的命令包括完成控制代码修改所需的预期下载程序代码事务的数量,要加载代码的存储空间区域以及下载程序代码事务的通道 传输。 通道被调谐,并且当引导程序准确地接收到所有的下载程序代码事务并存储它们时,引导程序将使控制程序在已被下载的新的或修改的控制程序代码的选定地址处重新启动。 引导程序可以将代码下载到不同配置的用户终端,包括具有来自插件扩展模块的闪存EPROM或扩展存储器的那些。