公开(公告)号：US20120201372A1

公开(公告)日：2012-08-09

申请号：US13024321

申请日：2011-02-09

申请人： John P. Eck

发明人： John P. Eck

IPC分类号： H04N7/167

CPC分类号： H04N21/43635

摘要： A method is disclosed for checking HDCP link integrity in a High-bandwidth Digital Content Protection (HDCP) transmitter. From an HDCP receiver communicatively coupled to the HDCP transmitter by an HDCP-protected interface, a single-bit value indicative of HDCP 1.1 feature support is read. When the single-bit value is true, HDCP Enhanced Link Verification is used in the HDCP transmitter. When the single-bit value is false, the method determines whether the HDMI receiver supports HDCP Enhanced Link Verification, and if so, HDCP Enhanced Link Verification is used in the HDCP transmitter.

摘要翻译： 公开了一种用于检查高带宽数字内容保护（HDCP）发射机中的HDCP链路完整性的方法。 从通过HDCP保护的接口通信地耦合到HDCP发射机的HDCP接收机读出指示HDCP1.1特征支持的单比特值。 当单位值为真时，HDCP增强型链路验证在HDCP发射机中使用。 当单位值为false时，该方法确定HDMI接收机是否支持HDCP增强型链路验证，如果是，则在HDCP发射机中使用HDCP增强链路验证。

公开(公告)号：US5912970A

公开(公告)日：1999-06-15

申请号：US629664

申请日：1996-04-09

申请人： John P. Eck

发明人： John P. Eck

IPC分类号： H04N7/169 ,  H04N7/171 ,  H04N7/167

CPC分类号： H04N7/1693 ,  H04N7/1713 ,  H04N7/1716

摘要： A sync suppression, phase inversion scrambling system for a television signal is modified to improve its anti-piracy attributes SAW filters are switched during horizontal intervals to introduce scrambling The switching is a function of a mode signal and framing code signals of two different widths A false framing code signal is inserted during the vertical interval to switch the filters. Additional false framing code signals of sufficient width to embrace the vertical broad pulses in the television signal are supplied to impart amplitude changes to the vertical broad pulses Authorized decoders can recognize the false framing code signals as legitimate and follow the filter switching performed at the encoder (to restore the vertical broad pulses), whereas pirate decoders cannot The result is a total loss of vertical sync in television receivers connected to the pirate decoders

摘要翻译： 改进了用于电视信号的同步抑制相位反转扰频系统以改善其反盗版属性在水平间隔期间切换SAW滤波器以引入扰频切换是模式信号和两种不同宽度的成帧码信号的函数 在垂直间隔期间插入成帧代码信号来切换滤波器。 提供足够宽度以包含电视信号中的垂直宽脉冲的附加伪成帧码信号，以向垂直宽脉冲施加幅度变化授权解码器可以将伪成帧码信号识别为合法的，并遵循在编码器处执行的滤波器切换（ 恢复垂直宽脉冲），而盗版解码器不能结果是连接到盗版解码器的电视接收机中的垂直同步的完全损失

公开(公告)号：US4802213A

公开(公告)日：1989-01-31

申请号：US019445

申请日：1987-02-26

申请人： Richard W. Citta ,  John P. Eck ,  Dennis M. Mutzabaugh

发明人： Richard W. Citta ,  John P. Eck ,  Dennis M. Mutzabaugh

IPC分类号： H04N7/167 ,  G06K1/02

CPC分类号： H04N7/167

摘要： A TV scrambling system includes means for scrambling a TV signal by phase reversing the carrier at a horizontal rate. A sound masking circuit includes a phase locked loop which operates at five times the horizontal frequency. The program sound signal is used to frequency modulate the VCO in the phase locked loop and the output is added to the regular program sound for modulation onto an RF carrier to create an interfering sound signal. Detection of the program sound signal in an unauthorized receiver is accompanied by beating between the 5 H harmonic of the phase reversal frequency and the interfering sound signal, which masks the program sound.

摘要翻译： 电视加扰系统包括通过以水平速率相位反转载波来扰频TV信号的装置。 声屏蔽电路包括以五倍于水平频率工作的锁相环。 程序声音信号用于在锁相环中对VCO进行频率调制，并将输出添加到常规程序声音中，以调制到RF载波上以产生干扰声音信号。 在未经授权的接收机中检测到节目声音信号伴随着相位反转频率的5 H谐波与屏蔽节目声音的干扰声音信号之间的跳动。

公开(公告)号：US09161081B2

公开(公告)日：2015-10-13

申请号：US13024321

申请日：2011-02-09

申请人： John P. Eck

发明人： John P. Eck

IPC分类号： G06F17/30 ,  H04N21/4363

CPC分类号： H04N21/43635

摘要： A method is disclosed for checking HDCP link integrity in a High-bandwidth Digital Content Protection (HDCP) transmitter. From an HDCP receiver communicatively coupled to the HDCP transmitter by an HDCP-protected interface, a single-bit value indicative of HDCP 1.1 feature support is read. When the single-bit value is true, HDCP Enhanced Link Verification is used in the HDCP transmitter. When the single-bit value is false, the method determines whether the HDMI receiver supports HDCP Enhanced Link Verification, and if so, HDCP Enhanced Link Verification is used in the HDCP transmitter.

摘要翻译： 公开了一种用于检查高带宽数字内容保护（HDCP）发射机中的HDCP链路完整性的方法。 从通过HDCP保护的接口通信地耦合到HDCP发射机的HDCP接收机读出指示HDCP1.1特征支持的单比特值。 当单位值为真时，HDCP增强型链路验证在HDCP发射机中使用。 当单位值为false时，该方法确定HDMI接收机是否支持HDCP增强型链路验证，如果是，则在HDCP发射机中使用HDCP增强链路验证。