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    • 7. 发明授权
    • Three line video scrambling method
    • 三线视频加扰法
    • US4604650A
    • 1986-08-05
    • US495549
    • 1983-05-17
    • Robert J. DelCocoGerald M. BorsukDonald R. Lampe
    • Robert J. DelCocoGerald M. BorsukDonald R. Lampe
    • H04N11/00H04N7/169H04N11/24H04N7/167H04L9/00
    • H04N7/1696
    • The invention comprises a system for scrambling, transmitting and descrambling the video portion of a TV signal. In the preferred embodiment two serial memories (charge coupled devices) are utilized to store data representing selected portions of the video to be scrambled. The charge coupled devices are selectively clocked to interchange portions of video, with the point at which the interchange occurs determined by a code pattern generator and changing in a predetermined manner. The point of interchange is updated or changed as determined by a code pattern generator and changing every three lines of the TV signal. Descrambling is accomplished by an identical hardware arrangement with the exception that the code pattern generator at the descrambler is synchronized with the code pattern generator in the scrambler. Synchronizing information can be transmitted to the descrambler in any convenient fashion including inserting the data in an unused video line of the vertical retrace interval.
    • 本发明包括一种用于对TV信号的视频部分进行加扰,发送和解扰的系统。 在优选实施例中,使用两个串行存储器(电荷耦合器件)来存储表示要加扰的视频的所选部分的数据。 电荷耦合器件被选择性地计时以交换视频的部分,交替发生的点由代码模式发生器确定并以预定方式改变。 交换点由代码模式生成器确定并更改电视信号的每三行。 解扰是通过相同的硬件布置完成的,除了解扰器上的码模式产生器与扰码器中的码型发生器同步。 可以以任何方便的方式将同步信息发送到解扰器,包括将数据插入到垂直回扫间隔的未使用的视频行中。
    • 8. 发明授权
    • Extended correlated double sampling for charge transfer devices
    • 电荷转移装置的扩展相关双重采样
    • US4035629A
    • 1977-07-12
    • US625694
    • 1975-10-24
    • Donald R. LampeMarvin H. WhiteJames H. Mims
    • Donald R. LampeMarvin H. WhiteJames H. Mims
    • G06G7/14G06G7/16G06G7/19G06J1/00G11C27/04H01L27/105H01L29/768H03H15/02H03K5/159G11C11/40
    • H03H15/02G06G7/14G06G7/16G06G7/1907G06J1/00G11C27/04H01L27/1057H01L29/76808H01L29/76816H01L29/76891
    • Extended correlated double sampling (ECDS) for charge transfer devices (CTD) corrects for errors arising in components of the CTD system from the input to the output thereof. Sources of error include bias variations and non-uniformity of thresholds and leakage currents. While applicable to any type of CTD system, for a TDI (time delay integration) application, precise error correction is achieved. Alternate signal level samples and reference level samples, the latter preferably AC zero, are propagated down the CTD channel as a related pair. At the CTD output, the signal and reference level samples of each pair are differenced, thereby correcting the resultant output signal for the noted types of errors. ECDS is compatible with CDS as taught in U.S. Pat. No. 3,781,574 and the two may be used jointly. An application of ECDS in the TDI mode for enhancement of signal outputs from a sensor array is disclosed, along with special parallel signal injection structure and operation for the requisite parallel signal injection into the channel, and special techniques of stabilized charged injection (SCI).
    • 用于电荷转移装置(CTD)的扩展相关双重采样(ECDS)校正从输入到其输出的CTD系统的组件中出现的错误。 误差源包括偏置偏差和阈值和漏电流的不均匀性。 适用于任何类型的CTD系统,对于TDI(时间延迟积分)应用,实现了精确的纠错。 交替的信号电平采样和参考电平采样(后者优选为AC 0)作为相关对沿CTD通道向下传播。 在CTD输出端,每一对的信号和参考电平采样是不同的,从而校正所输出的错误类型的输出信号。 ECDS与美国专利中所述的CDS兼容。 3,781,574号,可以共同使用。 公开了用于增强传感器阵列的信号输出的TDI模式中的ECDS的应用,以及用于必要的并行信号注入到通道中的特殊并行信号注入结构和操作,以及稳定电荷注入(SCI)的特殊技术。