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    • 3. 发明申请
    • APPARATUS AND METHOD FOR PERFORMING ATTENUATION FUNCTION IN CABLE BROADCAST RECEIVER
    • 电缆广播接收机执行衰减功能的装置及方法
    • US20100159863A1
    • 2010-06-24
    • US12645808
    • 2009-12-23
    • Sang-Yeon MOONGeun-Sik YUNDong-Uk SEOSung-Soo LEEHyun-Jun KIM
    • Sang-Yeon MOONGeun-Sik YUNDong-Uk SEOSung-Soo LEEHyun-Jun KIM
    • H04B7/00
    • H03G3/3052
    • An apparatus and a method for performing an attenuation function on a signal using an attenuator in a cable broadcast receiver having a Low Noise Amplifier (LNA) that does not perform an attenuation function on a signal are provided. In the method, an input Radio Frequency (RF) signal is tuned, The RF signal is converted into an Intermediate Frequency (IF) signal. An intensity of the converted IF signal is compared to a threshold, and an RF Automatic Gain Control (AGC) value is generated based on a result of the comparison. When the generated RF AGC value is smaller than an RF AGC threshold, the attenuator is turned on to attenuate the input RF signal by a predefined amount. Therefore, a high SNR, such as in an analog-digital composite signal, may be obtained without using an LNA that performs an attenuation function on a signal.
    • 提供一种用于在具有不对信号执行衰减功能的低噪声放大器(LNA)的有线广播接收机中使用衰减器对信号执行衰减功能的装置和方法。 在该方法中,调谐输入射频(RF)信号,将RF信号转换成中频(IF)信号。 将转换的IF信号的强度与阈值进行比较,并且基于比较的结果生成RF自动增益控制(AGC)值。 当所生成的RF AGC值小于RF AGC阈值时,衰减器导通,以将输入RF信号衰减预定量。 因此,可以在不使用对信号执行衰减功能的LNA的情况下获得诸如模拟数字复合信号中的高SNR。
    • 4. 发明授权
    • Tuning method and apparatus for reducing interference between adjacent channels
    • 用于减少相邻信道之间的干扰的调谐方法和装置
    • US07421262B2
    • 2008-09-02
    • US11282601
    • 2005-11-21
    • Dong-Uk Seo
    • Dong-Uk Seo
    • H04B1/16
    • H03J1/0008H03J5/00H04B1/1027H04N5/4446H04N5/50
    • A tuning method comprises: detecting a fundamental intermediate frequency IF0 of a channel to be received; determining whether the fundamental intermediate frequency IF0 is affected by an adjacent channel; when the fundamental intermediate frequency IF0 is affected by the adjacent channel, detecting a tuning intermediate frequency that is not affected by the adjacent channel while changing the fundamental intermediate frequency IF0; when there is no variable intermediate frequency that is not affected by the adjacent channel, detecting a variable intermediate frequency that is least affected by the adjacent channel as the tuning intermediate frequency; and tuning the channel using the tuning intermediate frequency. A tuning apparatus comprises: a tuner for detecting a fundamental intermediate frequency IF0 of a channel to be received, a flash memory for storing a tuning algorithm, and a demodulator for detecting a tuning intermediate frequency while changing the fundamental intermediate frequency IF0, and for tuning the channel using the tuning intermediate frequency based on a prescribed tuning algorithm, the tuning intermediate frequency being a variable intermediate frequency IFn that is not affected by an adjacent channel.
    • 调谐方法包括:检测要接收的信道的基本中频IF <0> 0 是否受相邻信道的影响; 当基本中频IF <0> 0受相邻信道影响时,检测在不改变基本中频IF <0> 0的情况下不受相邻信道影响的调谐中频; 当不存在不受相邻信道影响的可变中频时,检测受相邻信道影响最小的可变中频作为调谐中频; 并使用调谐中频对信道进行调谐。 调谐装置包括:用于检测要接收的信道的基本中频IF SUB的调谐器,用于存储调谐算法的闪速存储器,以及用于在改变调谐中心时检测调谐中频的解调器 基本中频IF 0 <0>,并且用于基于规定的调谐算法使用调谐中频调谐信道,调谐中频是可变中频IF N n 不受相邻通道影响。
    • 5. 发明申请
    • Tuning method and apparatus for reducing interference between adjacent channels
    • 用于减少相邻信道之间的干扰的调谐方法和装置
    • US20060111063A1
    • 2006-05-25
    • US11282601
    • 2005-11-21
    • Dong-Uk Seo
    • Dong-Uk Seo
    • H04B1/18H04B1/06
    • H03J1/0008H03J5/00H04B1/1027H04N5/4446H04N5/50
    • A tuning method comprises: detecting a fundamental intermediate frequency IF0 of a channel to be received; determining whether the fundamental intermediate frequency IF0 is affected by an adjacent channel; when the fundamental intermediate frequency IF0 is affected by the adjacent channel, detecting a tuning intermediate frequency that is not affected by the adjacent channel while changing the fundamental intermediate frequency IF0; when there is no variable intermediate frequency that is not affected by the adjacent channel, detecting a variable intermediate frequency that is least affected by the adjacent channel as the tuning intermediate frequency; and tuning the channel using the tuning intermediate frequency. A tuning apparatus comprises: a tuner for detecting a fundamental intermediate frequency IF0 of a channel to be received, a flash memory for storing a tuning algorithm, and a demodulator for detecting a tuning intermediate frequency while changing the fundamental intermediate frequency IF0, and for tuning the channel using the tuning intermediate frequency based on a prescribed tuning algorithm, the tuning intermediate frequency being a variable intermediate frequency IFn that is not affected by an adjacent channel.
    • 调谐方法包括:检测要接收的信道的基本中频IF <0> 0 是否受相邻信道的影响; 当基本中频IF <0> 0受相邻信道影响时,检测在不改变基本中频IF <0> 0的情况下不受相邻信道影响的调谐中频; 当不存在不受相邻信道影响的可变中频时,检测受相邻信道影响最小的可变中频作为调谐中频; 并使用调谐中频对信道进行调谐。 调谐装置包括:用于检测要接收的信道的基本中频IF SUB的调谐器,用于存储调谐算法的闪速存储器,以及用于在改变调谐中心时检测调谐中频的解调器 基本中频IF 0 <0>,并且用于基于规定的调谐算法使用调谐中频调谐信道,调谐中频是可变中频IF N n 不受相邻通道影响。
    • 6. 发明授权
    • System and method for making notification of reception limitation status of mobile telephone
    • 通知移动电话接收限制状态的系统和方法
    • US06999798B2
    • 2006-02-14
    • US10634745
    • 2003-08-06
    • Sang-Uk Seo
    • Sang-Uk Seo
    • H04Q7/20
    • H04M3/436H04M2203/651H04M2207/18H04W76/10
    • A system and method for providing notification of a reception limitation status of a receiving mobile telephone. The system and method employ the operations of electing a reception limitation reason after setting up reception limitation mode of operation for the receiving mobile terminal, converting the mobile terminal from a current mode of operation to a reception limitation mode of operation, determining whether the reception limitation has been set up for the receiving mobile terminal when a voice call is generated, providing bits corresponding to the reception limitation reason of the receiving mobile terminal based on an order qualification code (ORDQ) field of a release order, transmitting the bits corresponding to the reception limitation reason from the receiving mobile terminal to the base station when the reception limitation mode of operation has been established for the receiving terminal, transmitting the received bits in the ORDQ field of the release order to a calling mobile terminal from the base station, providing notification at the calling mobile terminal of the reception limitation reason corresponding to the received ORDQ bit value from the base station.
    • 一种用于提供接收移动电话的接收限制状态的通知的系统和方法。 该系统和方法采用在设置接收移动终端的接收限制操作模式之后选择接收限制原因的操作,将移动终端从当前操作模式转换为接收限制操作模式,确定接收限制 已经为接收移动终端设置了语音呼叫,根据释放顺序的顺序限定码(ORDQ)字段提供与接收移动终端的接收限制理由相对应的位,发送对应于 当接收终端已经建立了接收限制操作模式时,从接收移动终端到基站的接收限制原因,将从释放命令的ORDQ字段中的接收到的比特发送到主叫移动终端,提供 在接待台的主叫移动终端通知 对应于从基站接收到的ORDQ比特值。
    • 9. 发明授权
    • Apparatus and method for performing attenuation function in cable broadcast receiver
    • 在有线广播接收机中执行衰减功能的装置和方法
    • US08238857B2
    • 2012-08-07
    • US12645808
    • 2009-12-23
    • Sang-Yeon MoonGeun-Sik YunDong-Uk SeoSung-Soo LeeHyun-Jun Kim
    • Sang-Yeon MoonGeun-Sik YunDong-Uk SeoSung-Soo LeeHyun-Jun Kim
    • H04B17/02
    • H03G3/3052
    • An apparatus and a method for performing an attenuation function on a signal using an attenuator in a cable broadcast receiver having a Low Noise Amplifier (LNA) that does not perform an attenuation function on a signal are provided. In the method, an input Radio Frequency (RF) signal is tuned, The RF signal is converted into an Intermediate Frequency (IF) signal. An intensity of the converted IF signal is compared to a threshold, and an RF Automatic Gain Control (AGC) value is generated based on a result of the comparison. When the generated RF AGC value is smaller than an RF AGC threshold, the attenuator is turned on to attenuate the input RF signal by a predefined amount. Therefore, a high SNR, such as in an analog-digital composite signal, may be obtained without using an LNA that performs an attenuation function on a signal.
    • 提供一种用于在具有不对信号执行衰减功能的低噪声放大器(LNA)的有线广播接收机中使用衰减器对信号执行衰减功能的装置和方法。 在该方法中,调谐输入射频(RF)信号,将RF信号转换成中频(IF)信号。 将转换的IF信号的强度与阈值进行比较,并且基于比较的结果生成RF自动增益控制(AGC)值。 当所生成的RF AGC值小于RF AGC阈值时,衰减器导通,以将输入RF信号衰减预定量。 因此,可以在不使用对信号执行衰减功能的LNA的情况下获得诸如模拟数字复合信号中的高SNR。