Phase frequency detector used in phase locked loop
    21.
    发明授权
    Phase frequency detector used in phase locked loop 有权
    相位频率检测器用于锁相环

    公开(公告)号:US07102448B2

    公开(公告)日:2006-09-05

    申请号:US10812875

    申请日:2004-03-31

    CPC classification number: H03L7/089

    Abstract: A phase frequency detector used in a phase locked loop includes a phase error detecting unit for outputting phase error signals according to a phase error between a first input signal and a second input signal, and a reset unit coupled to the phase error detecting unit. The reset unit outputs reset signals according to the first and second input signals so as to reset the phase error detecting unit without delay time. Thus, it is possible to make the output timing of the phase error signal in a more precisely linear proportion to the phase error value and to enhance the sensitivity of the phase locked loop.

    Abstract translation: 在锁相环中使用的相位频率检测器包括相位误差检测单元,用于根据第一输入信号和第二输入信号之间的相位误差输出相位误差信号,以及耦合到相位误差检测单元的复位单元。 复位单元根据第一和第二输入信号输出复位信号,以便无延迟时间复位相位误差检测单元。 因此,可以使相位误差信号的输出定时与相位误差值更精确地成线性比例,并提高锁相环的灵敏度。

    Differential signal generating device with low power consumption
    22.
    发明授权
    Differential signal generating device with low power consumption 有权
    差分信号发生装置,功耗低

    公开(公告)号:US08362804B2

    公开(公告)日:2013-01-29

    申请号:US12726931

    申请日:2010-03-18

    CPC classification number: H03K5/151 H03K19/0008

    Abstract: A differential signal generating device includes a control circuit and a differential signal driver receiving a single-ended signal. The control circuit receives a source signal and generates a control signal corresponding to a first mode when the source signal conforms with a first pre-defined state, and corresponding to a second mode when the source signal conforms with a second pre-defined state. Variations of the source signal are related to signal content of the single-ended signal. The differential signal driver is coupled to the control unit for receiving the control signal therefrom. The differential signal driver outputs a differential signal output according to the single-ended signal when the control signal corresponds to the first mode. The differential signal driver outputs a non-differential signal output when the control signal corresponds to the second mode.

    Abstract translation: 差分信号发生装置包括控制电路和接收单端信号的差分信号驱动器。 当源信号符合第一预定义状态时,控制电路接收源信号并产生对应于第一模式的控制信号,并且当源信号符合第二预定义状态时,控制电路对应于第二模式。 源信号的变化与单端信号的信号内容有关。 差分信号驱动器耦合到控制单元以从其接收控制信号。 当控制信号对应于第一模式时,差分信号驱动器根据单端信号输出差分信号。 当控制信号对应于第二模式时,差分信号驱动器输出非差分信号输出。

    Image processing chip and related method for processing video
    24.
    发明授权
    Image processing chip and related method for processing video 有权
    图像处理芯片及其相关处理方法

    公开(公告)号:US08159609B2

    公开(公告)日:2012-04-17

    申请号:US11685217

    申请日:2007-03-13

    CPC classification number: H04N5/08 H04N5/185

    Abstract: The invention relates to an image processing chip and related method. The image processing chip includes a pin for receiving a composite signal; a synchronization signal detecting circuit, coupled to the pin, for extracting a synchronization signal from the composite signal; a clamping circuit, coupled to the pin, for adjusting a voltage level of the composite signal according to the synchronization signal; and an analog to digital converter, coupled to the pin, for generating a video signal by sampling the composite signal.

    Abstract translation: 本发明涉及图像处理芯片及相关方法。 图像处理芯片包括用于接收复合信号的引脚; 耦合到所述引脚的用于从所述复合信号中提取同步信号的同步信号检测电路; 耦合到所述引脚的钳位电路,用于根据所述同步信号调整所述复合信号的电压电平; 以及耦合到所述引脚的模数转换器,用于通过对所述复合信号进行采样来产生视频信号。

    Noise processing device and method thereof
    25.
    发明授权
    Noise processing device and method thereof 有权
    噪声处理装置及其方法

    公开(公告)号:US08059831B2

    公开(公告)日:2011-11-15

    申请号:US11436574

    申请日:2006-05-19

    Abstract: A noise processing device and its method are provided for a video/audio system having a high definition multimedia interface (HDMI). The noise processing device includes a detecting unit, a signal generating unit, and a decision unit. The noise processing method includes using the detecting unit to monitor a variation related to an audio signal and generate a detecting signal accordingly; using the signal generating unit to produce an adjustment signal according to the detecting signal; and using the decision unit to produce an output audio signal according to the audio signal and the adjustment signal. Another embodiment of the noise processing device includes a compensation tracking unit having a control unit. The compensation tracking unit produces an output audio signal according to a difference between the output audio signal itself and the audio signal and a gain of the control unit.

    Abstract translation: 为具有高分辨率多媒体接口(HDMI)的视频/音频系统提供噪声处理装置及其方法。 噪声处理装置包括检测单元,信号生成单元和判定单元。 噪声处理方法包括使用检测单元来监视与音频信号相关的变化并相应地生成检测信号; 使用所述信号产生单元根据所述检测信号产生调整信号; 以及使用所述判定单元根据所述音频信号和所述调整信号产生输出音频信号。 噪声处理装置的另一实施例包括具有控制单元的补偿跟踪单元。 补偿跟踪单元根据输出音频信号本身和音频信号之间的差异以及控制单元的增益产生输出音频信号。

    Method for evaluating signal transmission quality
    26.
    发明授权
    Method for evaluating signal transmission quality 有权
    信号传输质量评估方法

    公开(公告)号:US07933360B2

    公开(公告)日:2011-04-26

    申请号:US11162571

    申请日:2005-09-15

    CPC classification number: H04N17/004

    Abstract: A method to assess signal transmission quality and the adjust method thereof are proposed. First, different time points of a control signal at a receiving end are acquired and the number of signal transitions in a predetermined time interval is counted. Next, the number of signal transitions is recorded and compared to a reference value to obtain a comparison result. The quality of the control signal is then determined based on the comparison result. The parameter setting of the receiving end is adjusted according to the quality of the control signal received by the receiving end to get a better performance setting.

    Abstract translation: 提出了一种评估信号传输质量的方法及其调整方法。 首先,获取接收端的控制信号的不同时间点,并对预定时间间隔内的信号转换次数进行计数。 接下来,记录信号转换的数量并将其与参考值进行比较以获得比较结果。 然后根据比较结果确定控制信号的质量。 根据接收端接收到的控制信号的质量调整接收端的参数设置,以获得更好的性能设置。

    Frame synchronization method and device utilizing frame buffer
    27.
    发明授权
    Frame synchronization method and device utilizing frame buffer 有权
    帧同步方法和利用帧缓冲器的设备

    公开(公告)号:US07830450B2

    公开(公告)日:2010-11-09

    申请号:US11531281

    申请日:2006-09-13

    CPC classification number: G09G5/37 G06F3/14 G09G5/12 G09G2340/0435 G09G2340/10

    Abstract: A frame synchronization method includes: temporarily storing input data of at least one source frame in a frame buffer according to an input time sequence; generating an output time sequence according to the input time sequence and a delay time; generating output data of a destination frame according to the input data of the source frame; and outputting the output data of the destination frame according to an output time sequence; wherein an average frame rate of the source frame is substantially the same as that of the destination frame.

    Abstract translation: 帧同步方法包括:根据输入的时间序列临时存储帧缓冲器中的至少一个源帧的输入数据; 根据输入时间序列和延迟时间生成输出时间序列; 根据源帧的输入数据生成目的地帧的输出数据; 并根据输出时间序列输出目的地帧的输出数据; 其中所述源帧的平均帧速率与所述目的地帧的平均帧速率基本相同。

    Method and apparatus for adjusting phase of sampling frequency of ADC
    28.
    发明授权
    Method and apparatus for adjusting phase of sampling frequency of ADC 有权
    调整ADC采样频率相位的方法和装置

    公开(公告)号:US07535982B2

    公开(公告)日:2009-05-19

    申请号:US11160516

    申请日:2005-06-27

    Abstract: A method for adjusting a phase of a sampling frequency of ADC is disclosed. The method includes converting an analog signal into a first digital signal according to a first phase of the sampling frequency during a first time interval; calculating a first value according to the first digital signal; converting the analog signal into a second digital signal according to a second phase of the sampling frequency during a second time interval; calculating a second value according to the second digital signal; and adjusting the phase of the sampling frequency according to the first value and the second value.

    Abstract translation: 公开了一种调整ADC采样频率相位的方法。 该方法包括在第一时间间隔期间根据采样频率的第一相位将模拟信号转换为第一数字信号; 根据第一数字信号计算第一值; 在第二时间间隔期间根据采样频率的第二相位将模拟信号转换成第二数字信号; 根据第二数字信号计算第二值; 以及根据第一值和第二值调整采样频率的相位。

    APPARATUS AND METHOD THEREOF
    29.
    发明申请
    APPARATUS AND METHOD THEREOF 审中-公开
    装置及其方法

    公开(公告)号:US20080298721A1

    公开(公告)日:2008-12-04

    申请号:US12128383

    申请日:2008-05-28

    Abstract: The invention discloses a apparatus and related method. The apparatus comprises a front-end circuit, a back-end circuit and a determining unit. The front-end circuit is for measuring an image signal, determining the mode of the image signal according to the data of the image signal, and fetching image signal of the image signal. The back-end circuit is for processing the image signal according to the above-mentioned mode, and generating a feedback signal according to the status of the image signal after fetching there-to-fore. The determining unit is for generating a control signal to the front-end circuit according to the feedback signal for adjusting the setting of the mode.

    Abstract translation: 本发明公开了一种装置及相关方法。 该装置包括前端电路,后端电路和确定单元。 前端电路用于测量图像信号,根据图像信号的数据确定图像信号的模式,并且获取图像信号的图像信号。 后端电路用于根据上述模式处理图像信号,并且根据图像信号的状态在从前提取之后生成反馈信号。 确定单元用于根据用于调整模式设置的反馈信号向前端电路产生控制信号。

    SIGNAL RECEIVING METHOD FOR DETERMINING TRANSMISSION FORMAT OF INPUT SIGNAL AND RELATED SIGNAL RECEIVING CIRCUIT
    30.
    发明申请
    SIGNAL RECEIVING METHOD FOR DETERMINING TRANSMISSION FORMAT OF INPUT SIGNAL AND RELATED SIGNAL RECEIVING CIRCUIT 有权
    用于确定输入信号和相关信号接收电路的传输格式的信号接收方法

    公开(公告)号:US20080298504A1

    公开(公告)日:2008-12-04

    申请号:US12125075

    申请日:2008-05-22

    CPC classification number: H04L25/0272 H04L25/0262

    Abstract: The present invention discloses a signal receiving method for determining a transmission format of an input signal and a related signal receiving circuit. The signal receiving method includes: receiving the input signal; generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and determining the transmission format of the input signal according to the signal detecting result. The signal receiving circuit includes: an input interface, for receiving an input signal; a detecting module, for generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and a determining unit, for determining the transmission format of the input signal according to the signal detecting result.

    Abstract translation: 本发明公开了一种用于确定输入信号和相关信号接收电路的传输格式的信号接收方法。 信号接收方法包括:接收输入信号; 根据所述信号传输通道的输出结果产生与至少多个信号传输通道的信号传输通道相对应的信号检测结果; 以及根据信号检测结果确定输入信号的传输格式。 信号接收电路包括:输入接口,用于接收输入信号; 检测模块,用于根据所述信号传输通道的输出结果产生与至少多个信号传输通道的信号传输通道相对应的信号检测结果; 以及确定单元,用于根据信号检测结果确定输入信号的传输格式。

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