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    Watchdog method and apparatus
    6.
    发明授权
    Watchdog method and apparatus 有权
    看门狗方法和设备

    公开(公告)号：US06584587B1

    公开(公告)日：2003-06-24

    申请号：US09418964

    申请日：1999-10-14

    申请人： Michael Donald McDermott

    发明人： Michael Donald McDermott

    IPC分类号： G06F1100

    CPC分类号： G06F11/0715 ,  G06F3/14 ,  G06F11/076 ,  G09G2380/12

    摘要： A watchdog method and apparatus for a processing system running one or more tasks for controlling one or more subsystems is described. In one embodiment, the watchdog method configures a reset controller to cause a hardware reset to the one or more subsystems in a predetermined time, and registers one or more tasks in a task table. The method calls a first task in the table and changes a status of the first task to called. For each task in the table, the method determines the status of the task, and, if the status is called, sets a flag to a true state if a second predetermined time has passed since the task was called and a response message has not been received from the called task. The method configures the device to push back the occurrence of the hardware reset to the predetermined time if the flag is not set to the true state. A next task in the table is then called, and its status changed to called. The method again determines the status of each task in the table, and so on.

    摘要翻译： 描述了用于执行用于控制一个或多个子系统的一个或多个任务的处理系统的看门狗方法和装置。 在一个实施例中，看门狗方法配置复位控制器以在预定时间内对一个或多个子系统进行硬件复位，并将一个或多个任务注册到任务表中。 该方法调用表中的第一个任务，并更改要调用的第一个任务的状态。 对于表中的每个任务，该方法确定任务的状态，并且如果状态被调用，则如果从调用任务起第二个预定时间已经过去并且还没有响应消息，则将标志设置为真实状态 从被叫任务收到。 如果该标志未设置为真实状态，该方法将该设备配置为将硬件复位的发生推回到预定时间。 然后调用表中的下一个任务，并将其状态改为调用。 该方法再次确定表中每个任务的状态，依此类推。

    Method and apparatus for digital TV channel mapping
    7.
    发明授权
    Method and apparatus for digital TV channel mapping 有权
    数字电视频道映射的方法和装置

    公开(公告)号：US06775843B1

    公开(公告)日：2004-08-10

    申请号：US09418541

    申请日：1999-10-14

    申请人： Michael Donald McDermott

    发明人： Michael Donald McDermott

    IPC分类号： H04N5445

    CPC分类号： H04N21/438 ,  H04N5/4401 ,  H04N5/50 ,  H04N21/4345 ,  H04N21/84

    摘要： A mapping method and apparatus for digital television channel mapping is described. In one embodiment, the method includes detecting a virtual channel selected by a user where the virtual channel is divided into major and minor channels, obtaining a first physical channel in a first mapping table that maps to the major channel, causing the first physical channel to be tuned, and collecting a first VCT from the first physical channel. The method further includes retrieving a first TTSID assigned to the first physical channel and a CTSID of the virtual channel from the first VCT, and decoding audio and video signals from the first physical channel if the first TTSID is equal to the CTSID. The first and second mapping tables are generated beforehand, e.g., during auto programming.

    摘要翻译： 描述了用于数字电视频道映射的映射方法和装置。 在一个实施例中，该方法包括检测由用户选择的虚拟频道，其中虚拟频道被划分成主频道和次频道，获得映射到主频道的第一映射表中的第一物理频道，使第一物理频道 调整，并从第一个物理频道收集第一个VCT。 该方法还包括从第一VCT检索分配给第一物理信道的第一TTSID和虚拟信道的CTSID，以及如果第一TTSID等于CTSID，则解码来自第一物理信道的音频和视频信号。 第一和第二映射表预先生成，例如在自动编程期间。

    Automatic channel selection method and apparatus in unstable digital channel environments
    8.
    发明授权
    Automatic channel selection method and apparatus in unstable digital channel environments 有权
    自动频道选择方法和装置在不稳定的数字通道环境中

    公开(公告)号：US07551229B2

    公开(公告)日：2009-06-23

    申请号：US10917989

    申请日：2004-08-13

    申请人： Arthur H. Ozaki ,  Michael Donald McDermott ,  Peter Shintani

    发明人： Arthur H. Ozaki ,  Michael Donald McDermott ,  Peter Shintani

    IPC分类号： H04N5/46 ,  H04N5/44

    CPC分类号： H04N5/4401 ,  H04N5/46 ,  H04N5/50 ,  H04N21/42638 ,  H04N21/4382 ,  H04N21/44016 ,  H04N21/44209

    摘要： An apparatus comprising a tuner module configured to demodulate a first television signal and a second television signal that corresponds to the first television signal; and a controller electronically coupled to the tuner module, the controller configured to compare a value of a first variable to a threshold level, the value of the first variable related to a quality of the first television signal; wherein the controller switches from outputting for display the first television signal to outputting for display the second television signal that corresponds to the first television signal in response to comparing the value of the first variable to the threshold level.

    摘要翻译： 一种装置，包括：调谐器模块，被配置为解调对应于所述第一电视信号的第一电视信号和第二电视信号; 以及电子耦合到所述调谐器模块的控制器，所述控制器被配置为将第一变量的值与阈值电平进行比较，所述第一变量的值与所述第一电视信号的质量相关; 其中所述控制器响应于将所述第一变量的值与阈值水平进行比较，从用于显示所述第一电视信号的输出切换到输出，以显示对应于所述第一电视信号的所述第二电视信号。