Demodulator circuit for digital television and demodulation method
    1.
    发明授权
    Demodulator circuit for digital television and demodulation method 有权
    数字电视解调器电路解调方法

    公开(公告)号:US07548281B2

    公开(公告)日:2009-06-16

    申请号:US10762527

    申请日:2004-01-23

    IPC分类号: H04N5/455

    摘要: An apparatus may include a sort circuit for receiving first and second baseband signals, where the sort circuit shifting frequencies of the first and second baseband signals. The apparatus may also include a removal circuit for receiving the shifted first and second baseband signals and for combining the shifted first and second baseband signals to provide a frequency-modulated signal, and a symbol timing restoration circuit for measuring a timing error in related symbols of the frequency-modulated signal, for generating an address selection signal that is proportional to the timing error, in response to a carrier restoration signal, and for indicating restoration of the carrier.

    摘要翻译: 装置可以包括用于接收第一和第二基带信号的分类电路,其中分类电路移动第一和第二基带信号的频率。 该装置还可以包括用于接收移位的第一和第二基带信号并用于组合移位的第一和第二基带信号以提供调频信号的去除电路,以及用于测量相关符号中的定时误差的符号定时恢复电路 用于响应于载波恢复信号产生与定时误差成比例的地址选择信号的频率调制信号,并用于指示载波的恢复。

    Wireless communication terminal and method for checking wireless broadband internet service area using position detection system
    3.
    发明授权
    Wireless communication terminal and method for checking wireless broadband internet service area using position detection system 有权
    无线通信终端及使用位置检测系统检查无线宽带互联网服务区的方法

    公开(公告)号:US07894829B2

    公开(公告)日:2011-02-22

    申请号:US11713076

    申请日:2007-03-01

    申请人: Hyung-Woo Kim

    发明人: Hyung-Woo Kim

    IPC分类号: H04W24/00

    摘要: A wireless mobile communication terminal and method that can check a service area using GPS are provided. The wireless communication terminal using a position detection system and a wireless communication system having at least one connection node for providing a network connection service to a plurality of wireless communication terminals includes a communication module, a position detection module, and a network connection module which includes a service map specifying the availability of communication in an area determined according to a state of radio waves that have arrived from the connection node. The network connection module manages network connection using the position information about the wireless communication terminal and the service map. Therefore, the wireless communication terminal can determine if its current position is in an available WiBro service area using the GPS and WiBro service map information, thereby preventing power consumption due to unnecessary connection attempt in the unavailable service area.

    摘要翻译: 提供了可以使用GPS检查服务区域的无线移动通信终端和方法。 使用位置检测系统的无线通信终端和具有至少一个用于向多个无线通信终端提供网络连接服务的连接节点的无线通信系统包括通信模块,位置检测模块和网络连接模块,其包括 指定根据从连接节点到达的无线电波的状态确定的区域中的通信可用性的服务映射。 网络连接模块使用关于无线通信终端和服务地图的位置信息来管理网络连接。 因此,无线通信终端可以使用GPS和WiBro服务地图信息来确定其当前位置是否在可用的WiBro服务区域中,从而防止由于不可用服务区域中的不必要的连接尝试而导致的功耗。

    Wireless communication terminal and method for checking wireless broadband internet service area using position detection system
    4.
    发明申请
    Wireless communication terminal and method for checking wireless broadband internet service area using position detection system 有权
    无线通信终端及使用位置检测系统检查无线宽带互联网服务区的方法

    公开(公告)号:US20080064411A1

    公开(公告)日:2008-03-13

    申请号:US11713076

    申请日:2007-03-01

    申请人: Hyung-Woo Kim

    发明人: Hyung-Woo Kim

    IPC分类号: H04Q7/20

    摘要: A wireless mobile communication terminal and method that can check a service area using GPS are provided. The wireless communication terminal using a position detection system and a wireless communication system having at least one connection node for providing a network connection service to a plurality of wireless communication terminals includes a communication module, a position detection module, and a network connection module which includes a service map specifying the availability of communication in an area determined according to a state of radio waves that have arrived from the connection node. The network connection module manages network connection using the position information about the wireless communication terminal and the service map. Therefore, the wireless communication terminal can determine if its current position is in an available WiBro service area using the GPS and WiBro service map information, thereby preventing power consumption due to unnecessary connection attempt in the unavailable service area.

    摘要翻译: 提供了可以使用GPS检查服务区域的无线移动通信终端和方法。 使用位置检测系统的无线通信终端和具有至少一个用于向多个无线通信终端提供网络连接服务的连接节点的无线通信系统包括通信模块,位置检测模块和网络连接模块,其包括 指定根据从连接节点到达的无线电波的状态确定的区域中的通信可用性的服务映射。 网络连接模块使用关于无线通信终端和服务地图的位置信息来管理网络连接。 因此,无线通信终端可以使用GPS和WiBro服务地图信息来确定其当前位置是否在可用的WiBro服务区域中,从而防止由于不可用服务区域中的不必要的连接尝试引起的功耗。