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    • 1. 发明申请
    • Time-interleaved samplers
    • 时间交错采样器
    • US20050219091A1
    • 2005-10-06
    • US10518896
    • 2003-06-24
    • John WoodNigel Coote
    • John WoodNigel Coote
    • H03M1/12H03M1/10
    • H03M1/1085H03M1/1038H03M1/1215
    • This invention relates to a method of calibrating a time-interleaved analogue-to-digital sampler (10) and to a method of performing analogue-to-digital conversion with a sampler (10) so calibrated. The invention provides a method of calibrating a sampler (10) comprising N time-interleaved ADCs (12a-d), the method comprising the steps of: (a) injecting in turn N calibration signals (13) into the sampler such that each calibration signal (13) occupies one of N related frequencies; (b) determining the input signal for each one of the N calibration frequencies (13); (c) measuring in the frequency domain the output at each of the N related frequencies for each one of the N calibration frequencies; and (d) determining the relationship that relates the input signal to the output at each of the N related frequencies for each one of the N calibration frequencies.
    • 本发明涉及一种校准时间交织的模拟数字采样器(10)的方法,以及一种如此校准的采样器(10)执行模数转换的方法。 本发明提供了一种校准包括N个时间交错ADC(12 ad)的采样器(10)的方法,所述方法包括以下步骤:(a)将N个校准信号(13)再次注入到采样器中,使得每个校准信号 (13)占N个相关频率之一; (b)确定N个校准频率(13)中的每一个的输入信号; (c)在频域中测量N个校准频率中的每一个的N个相关频率中的每一个处的输出; 以及(d)确定在N个校准频率中的每个N个相关频率中的每一个处确定将输入信号与输出相关联的关系。
    • 5. 发明授权
    • High-speed, single-slope analog-to-digital converter
    • 高速,单斜率模数转换器
    • US07656336B2
    • 2010-02-02
    • US11696184
    • 2007-04-03
    • John Wood
    • John Wood
    • H03M1/12
    • G11C27/026G04F10/005G11C27/024H03M1/1004H03M1/54
    • A system and method for converting an analog signal to a digital signal is disclosed. The system includes a multiphase oscillator preferable a rotary oscillator, a sample and hold circuit, an integrator and a time-to-digital converter. The multiphase oscillator has a plurality of phases that are used in the time-to-digital converter to measure the time of a pulse created by the integrator. The edges of the pulse may optionally be sharpened by passing the pulse through a non-linear transmission line to improve the accuracy of the measurement process. To cut down on noise a tuned power network provides power to the switching devices of the rotary oscillator. Calibration is performed by fragmenting the sample and hold circuit and integrator and performing a closed loop calibration cycle on one of the fragments while the other fragments are joined together for the normal operation of the sample and hold and integrator circuits.
    • 公开了一种将模拟信号转换为数字信号的系统和方法。 该系统包括优选旋转振荡器,采样和保持电路,积分器和时间 - 数字转换器的多相振荡器。 多相振荡器具有在时间 - 数字转换器中用于测量由积分器产生的脉冲的时间的多个相位。 可以通过使脉冲通过非线性传输线来选择性地削尖脉冲的边缘,以提高测量过程的精度。 为了减少噪音,调谐电源网为旋转振荡器的开关装置提供电源。 校准是通过对采样和保持电路和积分器进行分片来执行的,并在其中一个片段上执行闭环校准周期,而其他片段连接在一起用于采样和保持和积分电路的正常工作。
    • 6. 发明申请
    • TEXT DATA FOR STREAMING VIDEO
    • 用于流动视频的文本数据
    • US20080284910A1
    • 2008-11-20
    • US12023519
    • 2008-01-31
    • John ErskineJohn WoodMatthew Gutierrez
    • John ErskineJohn WoodMatthew Gutierrez
    • H04N7/00
    • H04N5/9206G11B27/11H04N5/44513H04N7/0885H04N21/234336H04N21/4755H04N21/4884H04N21/812H04N21/8405
    • In a system and method providing a video with closed captioning, a processor may: provide a first website user interface adapted for receiving a user request for generation of closed captioning, the request referencing a multimedia file provided by a second website; responsive to the request: transcribe audio associated with the video into a series of closed captioning text strings arranged in a text file; for each of the text strings, store in the text file respective data associating the text string with a respective portion of the video; and store, for retrieval in response to a subsequent request made to the first website, the text file and a pointer associated with the text file and referencing the text file with the video; and/or providing the text file to an advertisement engine for obtaining an advertisement based on the text file and that is to be displayed with the video.
    • 在提供具有隐藏字幕的视频的系统和方法中,处理器可以:提供适于接收用于生成隐藏字幕的用户请求的第一网站用户界面,所述请求引用由第二网站提供的多媒体文件; 响应于该请求:将与该视频相关联的音频转录成布置在文本文件中的一系列隐藏字幕文本串; 对于每个文本串,存储在文本文件中,将文本串与视频的相应部分相关联的相应数据; 并且存储用于响应于对所述第一网站的后续请求进行检索,所述文本文件和与所述文本文件相关联的指针并且引用所述文本文件与所述视频; 和/或将文本文件提供给广告引擎,用于基于文本文件获得广告,并且将与视频一起显示。
    • 8. 发明申请
    • Electronic Circuitry
    • 电子电路
    • US20070103213A1
    • 2007-05-10
    • US11560825
    • 2006-11-16
    • John Wood
    • John Wood
    • H03L7/06
    • H03B5/1852G06F1/10H03K3/03H03K3/86H03L7/00
    • Timing signal generation and distribution are combined in operation of a signal path exhibiting endless electromagnetic continuity affording signal phase inversion and having associated regenerative active means. Two- or more-phases of substantially square-wave bipolar signals arise directly in traveling wave transmission-line embodiments compatible with semiconductor fabrication including CMOS. Coordination by attainable frequency synchronism with phase coherence for several such oscillating signal paths has intra-IC inter-IC and printed circuit board impact.
    • 定时信号产生和分配被组合在具有提供信号相位反转的无止境电磁连续性并且具有相关联的再生有源装置的信号路径的操作中。 基本方波双极性信号的两相或更多相直接出现在与包括CMOS的半导体制造兼容的行波传输线实施例中。 通过实现具有相位相干性的几个这样的振荡信号路径的可实现的频率同步的协调具有IC内IC和印刷电路板的影响。