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公开(公告)号：US5097428A
公开(公告)日：1992-03-17
申请号：US290553
申请日：1988-12-27
申请人： Philip S. Crosby
发明人： Philip S. Crosby
IPC分类号： G01R19/175 , G06F7/60 , G06F11/34 , G06F17/18
摘要： An apparatus for counting the number of times that each of a large number of digital data patterns are present on a set of signal lines comprises a plurality of random access memories (RAMs) and a feedback means, arranged to form an array of linear feedback shift registers. The data to be analyzed is applied to the address inputs of the RAMs where it selects one of the linear feedback shift registers in the array. A data-valid signal associated with this data causes the selected linear feedback shift register to increment (or decrement) in its pseudo-random count. After the analysis period is over, the value at each address is read out and translated using a lookup table or other translating means from the pseudo-random code of the linear feedback shift register into a meaningful number. This result may then be displayed; for example, in a histogram. An improved feedback path for the linear feedback shift register avoids hang-up states and the need for initialization. A mux can be used to switch between two alternative feedback paths, allowing the apparatus to operate in a count-up mode or a count-down mode.
摘要翻译： 一种用于计数在一组信号线上存在大量数字数据模式的次数的装置包括多个随机存取存储器（RAM）和反馈装置，其被布置成形成线性反馈移位阵列 注册 要分析的数据被应用于RAM的地址输入，其中它选择阵列中的线性反馈移位寄存器之一。 与该数据相关联的数据有效信号使得所选择的线性反馈移位寄存器在其伪随机数中递增（或递减）。 在分析周期结束之后，使用查找表或其他翻译装置从线性反馈移位寄存器的伪随机码读出并转换每个地址的值，并将其转换成有意义的数字。 然后可以显示该结果; 例如，在直方图中。 线性反馈移位寄存器的改进的反馈路径避免挂起状态和初始化的需要。 多路复用器可用于在两个备选反馈路径之间切换，从而允许设备以递增模式或倒计时模式运行。
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公开(公告)号：US08675452B2
公开(公告)日：2014-03-18
申请号：US12930288
申请日：2011-01-03
CPC分类号： G07C1/24
摘要： Improved systems and methods for timing athletic events. A radio-based starter unit and a radio based timer unit communicate wirelessly via radio. Push buttons/switches and lights and a speaker in the units provide an intuitive, easy to use interface. Handshaking occurs between the starter unit and the timer unit, and lights indicate that the event is ready to start. Real time clocks in the units are synchronized. Upon detection of race or other event start, such as from a starter's pistol, information indicative of the race start time is transmitted from the start unit to the timer unit. A camera in communication with the timer unit provides video frames, and the timer unit encodes and inserts elapsed time information in the video frames, which are then output from the timer unit for review and analysis on a computer.
摘要翻译： 改进系统和方法来计时运动赛事。 基于无线电的起动器单元和基于无线电的定时器单元通过无线电无线通信。 按钮/开关和灯和单元中的扬声器提供直观，易于使用的界面。 起动器单元和定时器单元之间发生握手，指示灯指示事件准备启动。 单元中的实时时钟同步。 在检测到比赛或其他事件开始时，例如从起动器的手枪，指示比赛开始时间的信息从起始单元发送到定时器单元。 与定时器单元通信的相机提供视频帧，并且定时器单元对视频帧中的经过时间信息进行编码和插入，然后从定时器单元输出以在计算机上进行查看和分析。
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公开(公告)号：US20080298810A1
公开(公告)日：2008-12-04
申请号：US12177681
申请日：2008-07-22
IPC分类号： H04B10/00
CPC分类号： H04B10/672
摘要： Methods and apparatus are provided in accordance with the present invention in which a control mechanism, such as for example, a microcontroller, provides an interface between an optical transponder and an external control system, such that monitoring and controlling of the optical components of the optical transponder are accomplished in an efficient and cost-effective manner. In some embodiments of the present invention, methods and apparatus provide for testing and calibration of the optical transponder without removing any portion of a protective housing within which the internal components of the optical transponder are disposed.
摘要翻译： 根据本发明提供的方法和装置，其中诸如例如微控制器的控制机构提供光学应答器和外部控制系统之间的接口，从而监测和控制光学元件的光学部件 转发器以有效和成本有效的方式实现。 在本发明的一些实施例中，方法和装置提供用于测试和校准光学应答器的方法和装置，而不需要移除其中设置光学应答器的内部部件的保护壳体的任何部分。
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14.发明授权公开(公告)号：US06330285B1
公开(公告)日：2001-12-11
申请号：US09021620
申请日：1998-02-11
IPC分类号： H04B166
CPC分类号： H04N21/64307 , H04N7/56 , H04N19/00 , H04N19/61 , H04N19/70 , H04N21/4305 , H04N21/4348
摘要： An apparatus for video clock and framing signal extraction by transport stream snooping parses MPEG2 Transport Packet headers from a transmission transport stream and partially decodes the headers to identify those corresponding to a specified packet identification (PID). From the specified headers a program clock is decoded and compared with a recovered program clock generated by a local clock oscillator and a local clock counter. The comparison is used to finely tune the recovered program clock frequency. Also from the heads video framing information is decoded, and such framing information and the recovered program clock are used to generate a video reference signal.
摘要翻译： 用于通过传输流窥探的视频时钟和成帧信号提取的装置从传输传输流解析MPEG2传输分组报头，并部分地解码报头以识别与指定的分组标识（PID）相对应的标题。 从指定的标题中，将程序时钟解码并与本地时钟振荡器和本地时钟计数器产生的恢复的程序时钟进行比较。 比较用于微调恢复的程序时钟频率。 从头部还可以对视频成帧信息进行解码，并且使用这种成帧信息和恢复的程序时钟来生成视频参考信号。
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公开(公告)号：US5200749A
公开(公告)日：1993-04-06
申请号：US706462
申请日：1991-05-28
申请人： Philip S. Crosby , Ajay K. Luthra
发明人： Philip S. Crosby , Ajay K. Luthra
CPC分类号： H04N9/7921 , H04N19/40 , H04N7/0105 , H04N7/08 , H04N9/804 , H04N9/877
摘要： A format converter for converting an input signal having a specified format to a digital signal of a pre-existing format, and for converting the digital signal back to the input signal automatically, loads an active data portion of the input signal into an input first-in/first-out (FIFO) buffer at a first data rate and reads the active data portion together with dummy filler samples from the FIFO at a second data rate as the digital signal. The number, location and/or values of the filler samples identify the specified format. In reverse the filler samples are stripped from the digital signal and the resulting active samples are loaded into an output FIFO at the second data rate. The stripped filler samples are used to determine the specified format of the original source of the data signal, and the active samples are read from the output FIFO at the first data rate in the specified format to reproduce the input signal.
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公开(公告)号：US5083849A
公开(公告)日：1992-01-28
申请号：US525815
申请日：1990-05-18
申请人： Philip S. Crosby
发明人： Philip S. Crosby
CPC分类号： H01J31/26
摘要： A sampling streak oscilloscope responsive to a light input signal stores charges on a CCD target by means of an electron beam rapidly scanned across a narrow dimension of the CCD target in coincidence with a segment or portion of the light input signal. The time relationship between a streak and the light input signal is changed to record a charge pattern for another segment of the input signal, while charges representative of a prior segment are transferred along the CCD array. A representation of the entire input signal is built up in memory.
摘要翻译： 响应于光输入信号的采样条纹示波器通过以与光输入信号的段或部分一致的方式在CCD目标的窄尺寸上快速扫描的电子束在CCD目标上存储电荷。 条纹和光输入信号之间的时间关系被改变以记录输入信号的另一段的电荷模式，而代表先前段的电荷沿CCD阵列传送。 整个输入信号的表示在内存中建立。
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公开(公告)号：US20170230622A9
公开(公告)日：2017-08-10
申请号：US14218659
申请日：2014-03-18
CPC分类号： H04N7/183 , G07C1/24 , H04N5/23216
摘要： Improved systems and methods for timing athletic events. A radio-based starter unit and a radio based timer unit communicate wirelessly via radio. Push buttons/switches and lights and a speaker in the units provide an intuitive, easy to use interface. Handshaking occurs between the starter unit and the timer unit, and lights indicate that the event is ready to start. Real time clocks in the units are synchronized. Upon detection of race or other event start, such as from a starter's pistol, information indicative of the race start time is transmitted from the start unit to the timer unit. A camera in communication with the timer unit provides video frames, and the timer unit encodes and inserts elapsed time information in the video frames, which are then output from the timer unit for review and analysis on a computer.
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18.发明授权Measuring delay variation of regenerated data clock and of associated data packets 有权测量再生数据时钟和相关数据包的延迟变化公开(公告)号：US06574246B1
公开(公告)日：2003-06-03
申请号：US09251946
申请日：1999-02-17
申请人： Philip S. Crosby
发明人： Philip S. Crosby
IPC分类号： H04J306
CPC分类号： H04J3/0632
摘要： An apparatus and method for measuring delay variation of a regenerated data clock and of the associated data packet has a first-in/first-out (FIFO) buffer to which an input clock associated with the data packet and data from the data packet are input. A sample clock derived from a regenerated data clock is used to clock the data out of the FIFO buffer, the regenerated data clock being a function of a reference frequency signal and a period control parameter. The regenerated data clock and input clock are compared to determine a buffer occupancy for the FIFO buffer, from which the period control parameter is derived. From the period control parameter and the buffer occupancy delay variation of the regenerated data clock and of the associated data packet is calculated.
摘要翻译： 用于测量再生数据时钟和关联数据分组的延迟变化的装置和方法具有先进先出（FIFO）缓冲器，与数据分组相关联的输入时钟和来自数据分组的数据被输入到其中 。 从再生的数据时钟导出的采样时钟用于将数据从FIFO缓冲器中取出，再生的数据时钟是参考频率信号和周期控制参数的函数。 将再生的数据时钟和输入时钟进行比较，以确定FIFO缓冲器的缓冲器占用率，从该缓冲器占用时间间隔控制参数。 从周期控制参数和再生数据时钟的缓冲器占用延迟变化以及相关联的数据分组计算。
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公开(公告)号：US5585868A
公开(公告)日：1996-12-17
申请号：US431947
申请日：1995-05-01
申请人： Philip S. Crosby
发明人： Philip S. Crosby
CPC分类号： H04N11/044 , H04N9/646
摘要： A video quality improvement method and apparatus for a television system recovers lost brightness information from the chrominance channels of an encoder due to processing errors, such as quantization roundoff errors, and adds it to the luminance input to the luminance channel of the encoder. Component signals from a video source are input to the encoder. The encoder provides an encoded video output signal as well as reconstructed component signals. From the encoder characteristics the processing errors for the chrominance channels are determined. The partial derivatives for each of the component signals are obtained, and the error in brightness is determined by summing the products of the errors and the corresponding chrominance partial derivatives. The luminance component signal is corrected by dividing the error in brightness by the luminance partial derivative and subtracting the result from the input luminance component signal. The corrected luminance component signal is processed by the encoder.
摘要翻译： 用于电视系统的视频质量改进方法和装置由于诸如量化舍入误差的处理错误而从编码器的色度信道中恢复丢失的亮度信息，并将其添加到编码器的亮度通道的亮度输入。 来自视频源的分量信号被输入到编码器。 编码器提供编码的视频输出信号以及重构的分量信号。 根据编码器特性，确定色度通道的处理误差。 获得每个分量信号的偏导数，并且通过将误差的乘积和对应的色度偏导数相加来确定亮度误差。 通过将亮度误差除以亮度偏导数并从输入亮度分量信号中减去结果来校正亮度分量信号。 校正的亮度分量信号由编码器处理。
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公开(公告)号：US5157290A
公开(公告)日：1992-10-20
申请号：US664907
申请日：1991-03-05
申请人： Philip S. Crosby
发明人： Philip S. Crosby
CPC分类号： H03L7/091 , H03D13/006 , H03L7/191
摘要： A sampling phase detector for a phase locked loop system receives a gate signal derived from the output of a voltage controlled oscillator to enable the phase detector. A reference signal is applied to the phase detector to charge one of two capacitors during the gate period, the capacitor being charged being determined by the state of the reference signal. At the end of the gate period the difference in charge between the two capacitors is transferred to the output of the phase detector as a control voltage signal to correct the output of the voltage controlled oscillator to be in phase wiht the reference signal.
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