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    • 2. 发明授权
    • Integrated remote control and phone user interface
    • 集成遥控器和手机用户界面
    • US06292210B1
    • 2001-09-18
    • US09001420
    • 1997-12-31
    • Irwin GerszbergJeffrey S. MartinHopeton S. WalkerEdward L. Wallace
    • Irwin GerszbergJeffrey S. MartinHopeton S. WalkerEdward L. Wallace
    • H04N714
    • H04N21/8583H04N7/147H04N21/235H04N21/41407H04N21/4312H04N21/4314H04N21/435H04N21/47815H04N2007/145
    • A remote control handset for cordless communication with a video controller enables enhanced video control and telephonic communication through the handset in an integrated communication network. Interface features on an integrated remote control and phone handset and in graphical screens displayed on the video appliance to facilitate user control of viewing and telephonic functions available in the aforementioned architecture. The user interface comprises controls or push buttons on a control panel incorporated into the handset. The user interface also comprises graphical screens which may be configured by the user to appear as a picture-in-picture with a video broadcast program on the video appliance, or as a full screen on the video appliance. The invention also provides speed dial features in which a number displayed on an advertisement on the video appliance may be dialed by the user upon engagement of a single control button on the handset.
    • 用于与视频控制器进行无绳通信的遥控手机能够通过集成通信网络中的手机实现增强的视频控制和电话通信。 集成的遥控器和电话听筒上的接口功能以及视频设备上显示的图形屏幕,以便用户控制上述架构中可用的观看和电话功能。 用户界面包括控制面板上的控制或按钮,该控制面板包括在手机中。 用户界面还包括图形屏幕,其可以由用户配置为在视频设备上以视频广播节目呈现为画中画,或者作为视频设备上的全屏显示。 本发明还提供了快速拨号功能,其中在手机上的单个控制按钮的参与时,用户可以在视频设备上的广告上显示的数字。
    • 7. 发明授权
    • Method and system for joint timing recovery and channel estimation for
DMT modems
    • DMT调制解调器联合定时恢复和信道估计的方法和系统
    • US6137848A
    • 2000-10-24
    • US963353
    • 1997-11-03
    • Jin-Meng HoEdward L. Wallace
    • Jin-Meng HoEdward L. Wallace
    • H04J1/00H04J3/06H04J11/00H04L25/02H04L27/26H04L7/00
    • H04L25/0202H04L27/2613H04L27/2662
    • A method and a system for acquiring data frame timing in a discrete multitone modem system in which an acquisition frame is generated having a first predetermined number of impulse signals. Each impulse signal is spaced in time by 2(P+1)T.sub.s, such that 1/T.sub.s is a sample transmission rate, and P is a time length in samples of a cyclic prefix that is added to a data frame. The cyclic prefix length P is chosen such that a channel impulse response seen at a receiver effectively spans no more than P+1 samples when a received signal is sampled at the 1/T.sub.s rate. Data frames are generated subsequent to the acquisition frame. Each data frame includes a cyclic prefix and at least as many data samples as samples of the cyclic prefix. The acquisition and data frames are converted to an analog signal for transmission. The received acquisition frame is sampled and a summation window is advanced one sample at a time through the received acquisition frame. The sampled acquisition frame is summed over each summation window, with each summation window spanning P+1 samples of the acquisition frame. A maximum summation value is determined as the summation window advances, and a data frame boundary is determined based on the summation window corresponding to the maximum summation value. A channel impulse response is estimated based on the P+1 samples of the received acquisition frame corresponding to the maximum summation value, and data is coherently detected based on the estimated channel impulse response.
    • 一种在离散多音调制解调器系统中获取数据帧定时的方法和系统,其中生成具有第一预定数量的脉冲信号的获取帧。 每个脉冲信号在时间上间隔2(P + 1)Ts,使得1 / Ts是采样传输速率,P是添加到数据帧的循环前缀的样本中的时间长度。 选择循环前缀长度P,使得当以1 / Ts速率采样接收信号时,在接收机处看到的信道脉冲响应有效地跨越不超过P + 1采样。 在采集帧之后生成数据帧。 每个数据帧包括循环前缀,并且至少与循环前缀的样本一样多的数据样本。 采集和数据帧被转换为模拟信号进行传输。 对接收到的采集帧进行采样,并通过接收到的采集帧一次提取一个采样窗口。 采样采集帧在每个求和窗口相加,每个求和窗口跨越采集帧的P + 1采样。 当求和窗口前进时确定最大求和值,并且基于与最大求和值对应的求和窗口来确定数据帧边界。 基于与最大求和值对应的接收到的获取帧的P + 1个样本来估计信道脉冲响应,并且基于所估计的信道脉冲响应来相干地检测数据。