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    • 2. 发明授权
    • Sound signal processing system and related apparatus and method
    • 声音信号处理系统及相关设备及方法
    • US07860913B2
    • 2010-12-28
    • US11671430
    • 2007-02-05
    • Hung-Kun ChenSterling Smith
    • Hung-Kun ChenSterling Smith
    • G06F17/10
    • H03H17/0664H03H17/0286H04N5/602
    • The invention discloses a finite impulse response (FIR) filter for processing a digital input signal to generate a digital output signal. The FIR filter has a tap amount N and a decimation ratio D. The FIR filter includes a first memory, a multiplier, and an accumulation module. For each input sample of the digital input signal, the first memory provides N/D corresponding tap coefficients from a plurality of tap coefficients in turn. The multiplier multiplies the input sample with the N/D corresponding tap coefficients in turn to generate N/D product values. The accumulation module adds the N/D product values to N/D previous accumulation values to generate N/D renewed accumulation values respectively. If one of the accumulation values has already accumulated N product values, the accumulation module outputs the accumulation value as an output sample of the digital output signal.
    • 本发明公开了一种用于处理数字输入信号以产生数字输出信号的有限脉冲响应(FIR)滤波器。 FIR滤波器具有抽头量N和抽取比例D. FIR滤波器包括第一存储器,乘法器和累加模块。 对于数字输入信号的每个输入采样,第一存储器依次从多个抽头系数提供N / D对应的抽头系数。 乘数依次将输入采样与N / D对应的抽头系数相乘以产生N / D乘积值。 累加模块将N / D乘积值添加到N / D先前累积值,以分别产生N / D更新累积值。 如果积累值中的一个已经累积了N个乘积值,则累积模块输出累加值作为数字输出信号的输出样本。
    • 4. 发明申请
    • SOUND SIGNAL PROCESSING SYSTEM AND RELATED APPARATUS AND METHOD
    • 声信号处理系统及相关装置及方法
    • US20080123772A1
    • 2008-05-29
    • US11671430
    • 2007-02-05
    • Hung-Kun ChenSterling Smith
    • Hung-Kun ChenSterling Smith
    • H04L25/49
    • H03H17/0664H03H17/0286H04N5/602
    • The invention discloses a finite impulse response (FIR) filter for processing a digital input signal to generate a digital output signal. The FIR filter has a tap amount N and a decimation ratio D. The FIR filter includes a first memory, a multiplier, and an accumulation module. For each input sample of the digital input signal, the first memory provides N/D corresponding tap coefficients from a plurality of tap coefficients in turn. The multiplier multiplies the input sample with the N/D corresponding tap coefficients in turn to generate N/D product values. The accumulation module adds the N/D product values to N/D previous accumulation values to generate N/D renewed accumulation values respectively. If one of the accumulation values has already accumulated N product values, the accumulation module outputs the accumulation value as an output sample of the digital output signal.
    • 本发明公开了一种用于处理数字输入信号以产生数字输出信号的有限脉冲响应(FIR)滤波器。 FIR滤波器具有抽头量N和抽取比例D. FIR滤波器包括第一存储器,乘法器和累加模块。 对于数字输入信号的每个输入采样,第一存储器依次从多个抽头系数提供N / D对应的抽头系数。 乘数依次将输入采样与N / D对应的抽头系数相乘以产生N / D乘积值。 累加模块将N / D乘积值添加到N / D先前累积值,以分别产生N / D更新累积值。 如果积累值中的一个已经累积了N个乘积值,则累积模块输出累加值作为数字输出信号的输出样本。
    • 5. 发明授权
    • Method of frame synchronization when scaling video and video scaling apparatus thereof
    • 缩放视频和视频缩放装置时的帧同步方法
    • US07239355B2
    • 2007-07-03
    • US10908473
    • 2005-05-13
    • Sterling SmithJiunn-Kuang ChenHsu-Lin FanChiang
    • Sterling SmithJiunn-Kuang ChenHsu-Lin FanChiang
    • H04N5/04
    • G06T3/40H04N5/04
    • A video scaling apparatus includes a receiver for receiving incoming video signals having transmitted therein a plurality of incoming frames, each incoming frame having a first plurality of synchronization signals for indicating lines in the incoming frame; a scaler with a line extender for generating outgoing video signals having transmitted therein a plurality of outgoing frames, each outgoing frame having a second plurality of synchronization signals for indicating lines in the outgoing frame, and for generating an outgoing frame for each incoming frame. The line extender ensures durations of all lines in the outgoing video signals are of substantially equal length. By ensuring that all lines in the outgoing frame are of substantially the same length, the reliability of a display device receiving the outgoing video signals is increased. Additionally, the frequency requirements of an outgoing clock for the video signals can be less stringent.
    • 视频缩放装置包括:接收器,用于接收在其中发送了多个输入帧的输入视频信号,每个输入帧具有用于指示输入帧中的行的第一多个同步信号; 具有线扩展器的缩放器,用于产生在其中发送了多个输出帧的输出视频信号,每个输出帧具有用于指示输出帧中的行的第二多个同步信号,并且用于为每个输入帧生成输出帧。 线延长器确保输出视频信号中的所有线的持续时间具有基本相等的长度。 通过确保输出帧中的所有线都具有基本相同的长度,接收输出视频信号的显示设备的可靠性增加。 此外,视频信号的输出时钟的频率要求可能不太严格。
    • 6. 发明授权
    • Digital frequency synthesizer based PLL
    • 基于数字频率合成器的PLL
    • US07231010B2
    • 2007-06-12
    • US10619488
    • 2003-07-16
    • Sterling Smith
    • Sterling Smith
    • H03D3/24
    • H03L7/0992H03L7/07
    • The present invention provides a phase-locked loop that comprises a divider, a noise-shaped quantizer, a filter, a phase detector and digital loop filter. The divider is used for receiving a reference clock with a substantially fixed period and generating an output clock with a time-varying period. The noise-shaped quantizer is used for quantizing a period control word to a time-varying value in response to the output clock fed from the divider so that the divider generates the output clock by means of dividing the reference clock by the time-varying value. The filter is employed to substantially filter out jitter from the output clock. The phase detector is used for generating a phase error in response to the filtered output clock and an input signal. The digital loop filter is used for generating the period control word in response to the phase error.
    • 本发明提供了一种锁相环,其包括分频器,噪声形量化器,滤波器,相位检测器和数字环路滤波器。 分频器用于接收基本固定的周期的基准时钟,并产生具有时变周期的输出时钟。 噪声形量化器用于响应于从分频器馈送的输出时钟而将周期控制字量化为时变值,使得分频器通过将参考时钟除以时变值而产生输出时钟 。 滤波器用于基本上滤除输出时钟的抖动。 相位检测器用于响应于滤波的输出时钟和输入信号而产生相位误差。 数字环路滤波器用于响应于相位误差产生周期控制字。
    • 9. 发明授权
    • Video signal processing system with a dynamic ADC calibration loop and related methods
    • 视频信号处理系统采用动态ADC校准循环及相关方法
    • US07084795B2
    • 2006-08-01
    • US10908741
    • 2005-05-24
    • Sterling SmithChia-Ming Yang
    • Sterling SmithChia-Ming Yang
    • H03M1/10
    • H03M1/1028H03M1/12
    • A video signal processing system with a dynamic calibration loop of an ADC comprises a calibration switch for transmitting signals according to a control signal; a reference switch module for transmitting reference voltages according to a plurality of control signals; a reference voltage generator coupled to the reference switch module for providing the reference voltages; a coarse tuner coupled to the calibration switch and the reference switch module for coarse-tuning received signals; an ADC coupled to the coarse tuner for converting analog signals to digital signals; a fine-tuner coupled to the ADC for fine-tuning received signals; and a calibration logic module for controlling the calibration switch, the reference switch module, the coarse tuner, the ADC, and the fine tuner according to signals outputted from the fine tuner, so as to compensate errors of the ADC.
    • 具有ADC的动态校准环路的视频信号处理系统包括用于根据控制信号发送信号的校准开关; 参考开关模块,用于根据多个控制信号传输参考电压; 耦合到参考开关模块的参考电压发生器,用于提供参考电压; 耦合到校准开关的粗调谐器和用于对接收信号进行粗调的参考开关模块; 耦合到粗调谐器的ADC,用于将模拟信号转换成数字信号; 耦合到ADC的微​​调器,用于微调接收信号; 以及校准逻辑模块,用于根据从精细调谐器输出的信号来控制校准开关,参考开关模块,粗调谐器,ADC和精细调谐器,以补偿ADC的误差。
    • 10. 发明申请
    • METHOD OF FRAME SYNCHRONIZATION WHEN SCALING VIDEO AND VIDEO SCALING APPARATUS THEREOF
    • 当视频和视频缩放设备缩放时,帧同步方法
    • US20050254509A1
    • 2005-11-17
    • US10908473
    • 2005-05-13
    • Sterling SmithJIUNN-KUANG CHENHsu-Lin FanChiang
    • Sterling SmithJIUNN-KUANG CHENHsu-Lin FanChiang
    • G06T3/40H04L12/54H04N5/04
    • G06T3/40H04N5/04
    • A video scaling apparatus includes a receiver for receiving incoming video signals having transmitted therein a plurality of incoming frames, each incoming frame having a first plurality of synchronization signals for indicating lines in the incoming frame; a scaler with a line extender for generating outgoing video signals having transmitted therein a plurality of outgoing frames, each outgoing frame having a second plurality of synchronization signals for indicating lines in the outgoing frame, and for generating an outgoing frame for each incoming frame. The line extender ensures durations of all lines in the outgoing video signals are of substantially equal length. By ensuring that all lines in the outgoing frame are of substantially the same length, the reliability of a display device receiving the outgoing video signals is increased. Additionally, the frequency requirements of an outgoing clock for the video signals can be less stringent.
    • 视频缩放装置包括:接收器,用于接收在其中发送了多个输入帧的输入视频信号,每个输入帧具有用于指示输入帧中的行的第一多个同步信号; 具有线扩展器的缩放器,用于产生在其中发送了多个输出帧的输出视频信号,每个输出帧具有用于指示输出帧中的行的第二多个同步信号,并且用于为每个输入帧生成输出帧。 线延长器确保输出视频信号中的所有线的持续时间具有基本相等的长度。 通过确保输出帧中的所有线都具有基本相同的长度,接收输出视频信号的显示设备的可靠性增加。 此外,视频信号的输出时钟的频率要求可能不太严格。