公开(公告)号：US20060276151A1

公开(公告)日：2006-12-07

申请号：US11308573

申请日：2006-04-08

Applicant: Che-Ming Lee

Inventor： Che-Ming Lee

IPC: H04B1/18

CPC classification number: H03J1/0091

Abstract: A method of scanning channels for a digital broadcasting receiver includes: presetting a starting frequency, a time interval, a first threshold, and a second threshold; scanning a channel from the starting frequency; reading a first gain value of an IF signal from a buffer when the receiver begins to scan the channel; reading a second gain value of the IF signal from the buffer after the time interval has elapsed; determining whether a difference between the first value and the second value is less than or equal to the first threshold; determining whether the second value is less than or equal to the second threshold, if the difference between the first value and the second value is less than or equal to the first threshold; and the receiver moving on from the channel being currently scanned to scan a next channel, if the second value is greater than the second threshold.

Abstract translation: 数字广播接收机的扫描信道的方法包括：预设起始频率，时间间隔，第一阈值和第二阈值; 从起始频率扫描频道; 当接收机开始扫描信道时，从缓冲器读取IF信号的第一增益值; 在经过时间间隔之后从缓冲器读取IF信号的第二增益值; 确定所述第一值和所述第二值之间的差是否小于或等于所述第一阈值; 如果所述第一值和所述第二值之间的差小于或等于所述第一阈值，则确定所述第二值是否小于或等于所述第二阈值; 并且所述接收器从当前扫描的信道上移动以扫描下一个信道，如果所述第二值大于所述第二阈值。

公开(公告)号：US08059703B2

公开(公告)日：2011-11-15

申请号：US12257370

申请日：2008-10-23

Applicant: Che-Ming Lee ,  Yew-Min Lo

Inventor： Che-Ming Lee ,  Yew-Min Lo

IPC: H04B1/38

CPC classification number: H04M11/066 ,  H04L12/10

Abstract: A system includes a plurality of modules which are configured for determining a suitable impedance for a modem. The plurality of modules send signals with a plurality of signal frequencies to a telephone and receive feedback signals from the telephone under each of a plurality of impedances of the modem, compute a total decibel value of the feedbacks under each impedance, and determine a suitable impedance according to a minimum total decibel value from the plurality of total decibel values.

Abstract translation: 一种系统包括被配置用于确定调制解调器的合适阻抗的多个模块。 多个模块将多个信号频率的信号发送到电话机，并且在调制解调器的多个阻抗中的每一个下接收来自电话的反馈信号，计算每个阻抗下的反馈的总分贝值，并且确定合适的阻抗 根据多个总分贝值中的最小总分贝值。

公开(公告)号：US20090310660A1

公开(公告)日：2009-12-17

申请号：US12257370

申请日：2008-10-23

Applicant: CHE-MING LEE ,  YEW-MIN LO

Inventor： CHE-MING LEE ,  YEW-MIN LO

IPC: H04L27/10

CPC classification number: H04M11/066 ,  H04L12/10

Abstract: A system includes a plurality of modules which are configured for determining a suitable impedance for a modem. The plurality of modules send signals with a plurality of signal frequencies to a telephone and receive feedback signals from the telephone under each of a plurality of impedances of the modem, compute a total decibel value of the feedbacks under each impedance, and determine a suitable impedance according to a minimum total decibel value from the plurality of total decibel values.

Abstract translation: 一种系统包括被配置用于确定调制解调器的合适阻抗的多个模块。 多个模块将多个信号频率的信号发送到电话机，并且在调制解调器的多个阻抗中的每一个下接收来自电话的反馈信号，计算每个阻抗下的反馈的总分贝值，并且确定合适的阻抗 根据多个总分贝值中的最小总分贝值。

公开(公告)号：US20080043945A1

公开(公告)日：2008-02-21

申请号：US11608813

申请日：2006-12-09

Applicant: CHE-MING LEE

Inventor： CHE-MING LEE

IPC: H04M11/00

CPC classification number: H04L12/2801

Abstract: A modem (10) includes a signal tuner module (101), a signal processing module (103), and a mode switching module (105). The signal tuner module receives a radio frequency (RF) signal in a first operation mode, and converts the RF signal to an intermediate frequency (IF) signal according to the first operation mode. The signal processing module processes the IF signal to generate an error rate according to the first operation mode. The mode switching module determines whether the first operation mode is right according to the error rate, and switches from the first operation mode to a second operation mode when the first operation mode is not right. A method for switching operation modes thereof is also provided.

Abstract translation: 调制解调器（10）包括信号调谐器模块（101），信号处理模块（103）和模式切换模块（105）。 信号调谐器模块以第一操作模式接收射频（RF）信号，并根据第一操作模式将RF信号转换为中频（IF）信号。 信号处理模块处理IF信号以根据第一操作模式产生错误率。 模式切换模块根据错误率确定第一操作模式是否正确，并且当第一操作模式不正确时，从第一操作模式切换到第二操作模式。 还提供了一种切换操作模式的方法。

公开(公告)号：US07949108B2

公开(公告)日：2011-05-24

申请号：US11608813

申请日：2006-12-09

Applicant: Che-Ming Lee

Inventor： Che-Ming Lee

IPC: H04M11/00

CPC classification number: H04L12/2801

Abstract: A modem (10) includes a signal tuner module (101), a signal processing module (103), and a mode switching module (105). The signal tuner module receives a radio frequency (RF) signal in a first operation mode, and converts the RF signal to an intermediate frequency (IF) signal according to the first operation mode. The signal processing module processes the IF signal to generate an error rate according to the first operation mode. The mode switching module determines whether the first operation mode is right according to the error rate, and switches from the first operation mode to a second operation mode when the first operation mode is not right. A method for switching operation modes thereof is also provided.

Abstract translation: 调制解调器（10）包括信号调谐器模块（101），信号处理模块（103）和模式切换模块（105）。 信号调谐器模块以第一操作模式接收射频（RF）信号，并根据第一操作模式将RF信号转换为中频（IF）信号。 信号处理模块处理IF信号以根据第一操作模式产生错误率。 模式切换模块根据错误率确定第一操作模式是否正确，并且当第一操作模式不正确时，从第一操作模式切换到第二操作模式。 还提供了一种切换操作模式的方法。

公开(公告)号：US07562752B2

公开(公告)日：2009-07-21

申请号：US11308633

申请日：2006-04-14

Applicant: Che-Ming Lee ,  Chen-Chi Fan ,  Chih-Chiang Wu ,  Wei-Hsi Chen

Inventor： Che-Ming Lee ,  Chen-Chi Fan ,  Chih-Chiang Wu ,  Wei-Hsi Chen

IPC: H01Q1/00 ,  G09G5/00

CPC classification number: H02G11/02

Abstract: The retractable cable device includes a base, a rotary portion, a spring, a cover, and at least two medal plates. The rotary portion cooperates with the base to form a cavity, and the cable is disposed on the rotary portion. The spring is disposed in the cavity for driving the rotary portion to rotate. The cover is coupled to the base. The metal plate is connected to the rotary portion for maintaining an electrical connection between the antenna and the cable when the rotary portion rotates.

Abstract translation: 可收缩的电缆装置包括基座，旋转部分，弹簧，盖子和至少两个勋章。 旋转部与基座配合形成空腔，电缆设置在旋转部上。 弹簧设置在空腔中，用于驱动旋转部分旋转。 盖子连接到底座。 当旋转部分旋转时，金属板连接到旋转部分以保持天线和电缆之间的电连接。

公开(公告)号：US20070040753A1

公开(公告)日：2007-02-22

申请号：US11308633

申请日：2006-04-14

Applicant: CHE-MING LEE ,  CHEN-CHI FAN ,  CHIH-CHIANG WU ,  WEI-HSI CHEN

Inventor： CHE-MING LEE ,  CHEN-CHI FAN ,  CHIH-CHIANG WU ,  WEI-HSI CHEN

IPC: H01Q1/24 ,  H01Q21/00

CPC classification number: H02G11/02

Abstract: The retractable cable device includes a base, a rotary portion, a spring, a cover, and at least two medal plates. The rotary portion cooperates with the base to form a cavity, and the cable is disposed on the rotary portion. The spring is disposed in the cavity for driving the rotary portion to rotate. The cover is coupled to the base. The metal plate is connected to the rotary portion for maintaining an electrical connection between the antenna and the cable when the rotary portion rotates.

Abstract translation: 可收缩的电缆装置包括基座，旋转部分，弹簧，盖子和至少两个勋章。 旋转部与基座配合形成空腔，电缆设置在旋转部上。 弹簧设置在空腔中，用于驱动旋转部分旋转。 盖子连接到底座。 当旋转部分旋转时，金属板连接到旋转部分以保持天线和电缆之间的电连接。

公开(公告)号：US07586999B2

公开(公告)日：2009-09-08

申请号：US11308573

申请日：2006-04-08

Applicant: Che-Ming Lee

Inventor： Che-Ming Lee

IPC: H04L27/00

CPC classification number: H03J1/0091

Abstract: A method of scanning channels for a digital broadcasting receiver includes: presetting a starting frequency, a time interval, a first threshold, and a second threshold; scanning a channel from the starting frequency; reading a first gain value of an IF signal from a buffer when the receiver begins to scan the channel; reading a second gain value of the IF signal from the buffer after the time interval has elapsed; determining whether a difference between the first value and the second value is less than or equal to the first threshold; determining whether the second value is less than or equal to the second threshold, if the difference between the first value and the second value is less than or equal to the first threshold; and the receiver moving on from the channel being currently scanned to scan a next channel, if the second value is greater than the second threshold.

Abstract translation: 数字广播接收机的扫描信道的方法包括：预设起始频率，时间间隔，第一阈值和第二阈值; 从起始频率扫描频道; 当接收机开始扫描信道时，从缓冲器读取IF信号的第一增益值; 在经过时间间隔之后从缓冲器读取IF信号的第二增益值; 确定所述第一值和所述第二值之间的差是否小于或等于所述第一阈值; 如果所述第一值和所述第二值之间的差小于或等于所述第一阈值，则确定所述第二值是否小于或等于所述第二阈值; 并且所述接收器从当前扫描的信道上移动以扫描下一个信道，如果所述第二值大于所述第二阈值。