公开(公告)号：US06731758B1

公开(公告)日：2004-05-04

申请号：US09385592

申请日：1999-08-29

申请人： Gary L. Graunke ,  David A. Lee ,  Robert W. Faber

发明人： Gary L. Graunke ,  David A. Lee ,  Robert W. Faber

IPC分类号： H04N7167

CPC分类号： H04N21/4183 ,  H04N7/1675 ,  H04N21/4108 ,  H04N21/4181 ,  H04N21/4627 ,  H04N21/63345 ,  H04N21/63775

摘要： A video source device generates a session key for each transmission session wherein a multi-frame video content is to be transmitted to a video sink device. The video source device uses the session key to generate a successive number of frame keys. The frame keys in turn are used to generate corresponding pseudo random bit sequences for ciphering the corresponding frames to protect the video content from unauthorized copying during transmission. The video sink device practices a complementary approach to decipher the received video content. In one embodiment, both devices are each provided with an integrated block/stream cipher to practice the transmission protection method.

摘要翻译： 视频源设备为每个传输会话生成会话密钥，其中将多帧视频内容发送到视频宿设备。 视频源设备使用会话密钥来生成连续数量的帧密钥。 这些帧密钥依次用于生成相应的伪随机比特序列，用于加密对应的帧，以保护视频内容免于在传输期间的未经授权的复制。 视频接收器设备实现了对接收的视频内容进行解密的补充方法。 在一个实施例中，两个设备都被提供有集成的块/流密码以实现传输保护方法。

公开(公告)号：US06219373B1

公开(公告)日：2001-04-17

申请号：US09106504

申请日：1998-06-15

申请人： David A. Lee ,  Grant A. Hansen ,  Wei Kuo

发明人： David A. Lee ,  Grant A. Hansen ,  Wei Kuo

IPC分类号： A61F206

CPC分类号： G06F17/148 ,  G01S19/21 ,  H04K3/228

摘要： Interference from a spread-spectrum signal (e.g., GPS) is filtered out utilizing a wavelet-based method. A wavelet packet decomposition scheme generates a first plurality of coefficient sets from the signal(s). An entropy measurement is determined for each resulting wavelet decomposition level. Portions of the spread-spectrum signal occurring above the noise floor for the wavelet decomposition level having the lowest entropy measurement are then filtered out so that a revised coefficient set is generated therefor. As a result, a second plurality of coefficient sets can be formed such that the first plurality of coefficient sets differs from the second plurality of coefficient sets only by the revised coefficient set. A new signal is formed by applying a wavelet packet reconstruction scheme to the second plurality of coefficient sets.

摘要翻译： 使用基于小波的方法来滤波来自扩频信号（例如，GPS）的干扰。 小波包分解方案从信号生成第一多个系数集合。 对于每个产生的小波分解级别确定熵测量。 对于具有最低熵测量的小波分解水平，出现在噪声本底之上的扩频信号的部分然后被滤除，从而为此生成修正的系数集。 结果，可以形成第二多个系数集合，使得第一多个系数集合仅与第二多个系数集合仅通过修改的系数集合而不同。 通过对第二多个系数组应用小波包重建方案来形成新的信号。

公开(公告)号：US4730706A

公开(公告)日：1988-03-15

申请号：US883700

申请日：1986-07-09

申请人： Douglas P. Taylor ,  David A. Lee

发明人： Douglas P. Taylor ,  David A. Lee

IPC分类号： F16F9/20 ,  F16F9/32 ,  F16F9/24

CPC分类号： F16F9/20 ,  F16F9/3264

摘要： A snubber with an integral test structure which permits the snubber to be tested for drag, lockup and full load pressure characteristics without disconnecting it from between two external members between which it is mounted including a cylinder with opposite end walls, a piston mounted on a piston rod extending through the end walls and dividing the space between the end walls into first and second chambers which are filled with hydraulic fluid, a first clevis connecting one end of the piston rod to a first external member, a housing mounted for sliding movement on the cylinder and including a second clevis connecting it to a second external member, a plurality of selectively removable pins for fixedly attaching the housing to the cylinder or permitting it, when removed, to slide relative thereto, and ports in communication with the two chambers for conducting hydraulic liquid thereto or exhausting hydraulic liquid therefrom.

摘要翻译： 具有整体测试结构的缓冲器，其允许缓冲器被测试阻力，锁定和满载压力特性，而不将其从其安装的两个外部构件之间断开，包括具有相对端壁的气缸，安装在活塞上的活塞 杆延伸穿过端壁并且将端壁之间的空间分成充满液压流体的第一和第二腔室，将活塞杆的一端连接到第一外部构件的第一U形夹，安装成在其上滑动的壳体 并且包括将其连接到第二外部构件的第二U形夹，多个可选择性地拆卸的销，用于将壳体固定地附接到气缸或允许其移除时相对于其滑动，并且与两个室连通的端口用于导电 液压液体或排出液压液体。

公开(公告)号：US20140129827A1

公开(公告)日：2014-05-08

申请号：US13694221

申请日：2012-11-08

申请人： Hormuzd M. Khosravi ,  David A. Lee ,  Raji Srinivasa Raghavan

发明人： Hormuzd M. Khosravi ,  David A. Lee ,  Raji Srinivasa Raghavan

IPC分类号： H04L9/32 ,  H04W12/06 ,  H04L29/06

CPC分类号： H04L9/0825 ,  G06F21/123 ,  G06F21/44 ,  G06F2221/2111 ,  H04L63/0428 ,  H04L63/0485 ,  H04L63/0823 ,  H04L2463/101 ,  H04N21/2347 ,  H04N21/266 ,  H04N21/43637 ,  H04N21/4405 ,  H04N21/4623 ,  H04W4/80 ,  H04W12/02 ,  H04W12/06

摘要： A content processing integrated circuit includes a system-on-a-chip (SoC) that further includes a processor to receive an authentication request from an external device for authenticating if the SoC is permitted to receive encrypted content from the external device, and to receive the encrypted content once the SoC is authenticated. An authentication processor is provided and coupled to the processor to authenticate the SoC to the external device when the processor receives the authentication request, and to generate a decryption key for decrypting the encrypted content. A decryption processor is provided and coupled to the processor and the authentication processor to receive the decryption key from the authentication processor and to decrypt the encrypted content with the decryption key. A wireless display system with such SoC is also described. A method of implementing a secure and robust content protection in a SoC is also described.

摘要翻译： 内容处理集成电路包括芯片系统芯片（SoC），其还包括处理器，用于从外部设备接收认证请求，用于认证是否允许SoC从外部设备接收加密的内容，并且接收 一旦SoC被认证，加密的内容。 当处理器接收到认证请求时，提供认证处理器并将其耦合到处理器以对外部设备进行认证，并产生用于解密加密内容的解密密钥。 提供解密处理器并将其耦合到处理器和认证处理器以从认证处理器接收解密密钥，并用解密密钥解密加密的内容。 还描述了具有这种SoC的无线显示系统。 还描述了在SoC中实现安全和鲁棒的内容保护的方法。

公开(公告)号：US20100316883A1

公开(公告)日：2010-12-16

申请号：US12790183

申请日：2010-05-28

申请人： David A. Lee ,  Heidi Lynette de Villiers-Lovelock ,  Danie Jacobus Dewet ,  James B. C. Wu

发明人： David A. Lee ,  Heidi Lynette de Villiers-Lovelock ,  Danie Jacobus Dewet ,  James B. C. Wu

IPC分类号： C23C4/06 ,  B32B15/02

CPC分类号： C23C4/067 ,  C23C4/02 ,  C23C4/06 ,  Y10T428/12056

摘要： A wear- and corrosion-resistance coating over a metal substrate having a first-layer carbide material, a second metal coating layer over the first metal coating layer, and a surface metal coating layer over the second metal coating layer; and thermal spray method for applying the coating.

摘要翻译： 在具有第一层碳化物材料的金属基材上的耐磨损和耐腐蚀涂层，在第一金属涂层上的第二金属涂层和在第二金属涂层上的表面金属涂层; 以及涂覆涂层的热喷涂方法。

公开(公告)号：US07114168B1

公开(公告)日：2006-09-26

申请号：US09675823

申请日：2000-09-29

申请人： David A. Wyatt ,  Robert W. Faber ,  David A. Lee ,  Brendan Traw

发明人： David A. Wyatt ,  Robert W. Faber ,  David A. Lee ,  Brendan Traw

IPC分类号： H04N7/167

CPC分类号： H04N7/163 ,  H04N5/765 ,  H04N5/775 ,  H04N9/8205 ,  H04N21/4122 ,  H04N21/43615 ,  H04N21/4367 ,  H04N21/44231 ,  H04N21/44236 ,  H04N21/835 ,  H04N21/8352 ,  H04N21/8355 ,  H04N2005/91364

摘要： A method and apparatus for determining the scope of a content domain for ensuring that a content stream is not re-routed to an unauthorized display device. The apparatus includes a content source device, which supports multiple display outputs coupled to one or more content sink devices. A content source application generates and provides a content stream to a hardware interface which securely transmits the content stream to a protected content sink device using a content protection protocol. The content source application utilizes certain status information to ensure that the content stream is not re-routed to an unprotected or unapproved content sink device. The source application requests the updated session identification code from the transmitter/codec unit using the content protection protocol which is compared against the expected session identification code to ensure that the content display stream has not been re-routed to an unprotected content sink device.

摘要翻译： 一种用于确定内容域的范围以确保内容流不被重新路由到未经授权的显示设备的方法和装置。 该设备包括内容源设备，其支持耦合到一个或多个内容宿设备的多个显示输出。 内容源应用程序生成并向硬件接口提供内容流，硬件接口使用内容保护协议将内容流安全地发送到受保护的内容宿设备。 内容源应用程序利用某些状态信息来确保内容流不被重新路由到未受保护或未经批准的内容宿设备。 源应用程序使用内容保护协议从发射机/编解码器单元请求更新的会话识别码，该内容保护协议与预期会话识别码进行比较，以确保内容显示流未被重新路由到未受保护的内容宿设备。

公开(公告)号：US06920221B1

公开(公告)日：2005-07-19

申请号：US09540190

申请日：2000-03-31

申请人： Robert W. Faber ,  David A. Lee ,  Brendan Traw ,  Gary L. Graunke ,  Richard P. Mangold

发明人： Robert W. Faber ,  David A. Lee ,  Brendan Traw ,  Gary L. Graunke ,  Richard P. Mangold

IPC分类号： G06F21/00 ,  H04N7/167 ,  H04L9/32

CPC分类号： H04N21/4122 ,  G06F21/10 ,  G06F21/445 ,  G06F2221/2103 ,  G06F2221/2107 ,  H04N7/1675 ,  H04N21/4367 ,  H04N21/4408

摘要： A video source application in a video source device requests from a video hardware interface of the video source device status with respect to a link linking the video source device to an external video sink device, and supplements the status request with a first basis value to a symmetric ciphering/deciphering process. The video source application, upon receiving from the video hardware interface the requested status and a verification key, generated using said symmetric ciphering/deciphering process and employing the first basis value, verifies the correctness of the verification key to determine whether to trust said provided status. In like manner, the video source application requests from the video hardware interface a secret the video hardware interface uses to cipher video to be transmitted by the video hardware interface to the external video sink device. The secret request is supplemented with a second basis value to the symmetric ciphering/deciphering process. The secret is returned in a cipher form, ciphered using a ciphering key generated using the second basis value. The video source application deciphers the secret using its own independently generated copy of the ciphering key.

摘要翻译： 视频源设备中的视频源应用相对于将视频源设备链接到外部视频接收设备的链接，从视频源设备的视频硬件接口请求状态，并将第一基础值的状态请求补充到 对称加密/解密过程。 视频源应用程序在从视频硬件接口接收到使用所述对称加密/解密处理并采用第一基值产生的请求状态和验证密钥时，验证验证密钥的正确性以确定是否信任所提供的状态 。 以类似的方式，视频源应用程序从视频硬件接口请求视频硬件接口用于将视频硬件接口传输的视频加密到外部视频接收器设备的秘密。 秘密请求以对称加密/解密处理的第二基础值补充。 秘密以加密形式返回，使用使用第二基础值生成的加密密钥进行加密。 视频源应用程序使用其自己独立生成的加密密钥的副本来解密秘密。

公开(公告)号：US06477252B1

公开(公告)日：2002-11-05

申请号：US09385590

申请日：1999-08-29

申请人： Robert W. Faber ,  David A. Lee ,  Brendan S. Traw ,  Gary L. Graunke

发明人： Robert W. Faber ,  David A. Lee ,  Brendan S. Traw ,  Gary L. Graunke

IPC分类号： H04N7167

CPC分类号： H04N21/4367 ,  G06F21/445 ,  G06F2221/2103 ,  G06F2221/2107 ,  G11B20/00086 ,  H04K1/00 ,  H04L9/0662 ,  H04L9/0866 ,  H04L2209/60 ,  H04N7/1675 ,  H04N21/25816 ,  H04N21/4122 ,  H04N21/4143 ,  H04N21/4627 ,  H04N21/63345

摘要： A video source device provides a basis value to a symmetric ciphering/deciphering process to a video sink device, to which the video source device is to provide a video content. The video source device ciphers the video content for transmission to the video sink device, including generation of a first cipher key through functional transformation of the basis value. The video source device further verifies periodically that the transmitted video content is indeed being symmetrically deciphered by the video sink device. The video sink device practices symmetric deciphering, including generation of a first decipher key through functional transformation of the basis value. The video sink device also provides verification values to the video source device to facilitate confirmation of symmetric deciphering. In one embodiment, the video source and sink devices further authenticate each other, including generation of an authentication key, which is used in the generation of the first cipher/decipher key.

摘要翻译： 视频源设备向视频信宿设备提供对称加密/解密处理的基础值，视频源设备将提供视频内容。 视频源设备加密用于传输到视频宿设备的视频内容，包括通过基础值的功能转换来生成第一密码密钥。 视频源设备进一步验证所发送的视频内容确实被视频宿设备对称地解密。 视频宿设备实行对称解密，包括通过基础值的功能转换生成第一解密密钥。 视频宿设备还向视频源设备提供验证值以便于对称解密的确认。 在一个实施例中，视频源和宿设备进一步认证彼此，包括生成认证密钥，其用于生成第一密码/解密密钥。

公开(公告)号：US5075323A

公开(公告)日：1991-12-24

申请号：US399429

申请日：1989-08-23

申请人： Gordon L. Fain ,  David A. Lee ,  Per L. Lindberg ,  George Sachs

发明人： Gordon L. Fain ,  David A. Lee ,  Per L. Lindberg ,  George Sachs

IPC分类号： C07D401/12

CPC分类号： C07D401/12

摘要： A method for the treatment of diseases related to an increased intraocular pressure in the eye comprising administration to a patient suffering therefrom an amount of a compound of the formula I ##STR1## or a pharmaceutically acceptable salt thereof.

摘要翻译： 一种用于治疗与眼睛中眼压升高有关的疾病的方法，包括向患有其的患者施用一定量的式I化合物或其药学上可接受的盐。

公开(公告)号：US4892051A

公开(公告)日：1990-01-09

申请号：US613587

申请日：1984-05-23

申请人： Douglas P. Taylor ,  David A. Lee

发明人： Douglas P. Taylor ,  David A. Lee

IPC分类号： B63B17/00 ,  B63G1/00 ,  F16F5/00

CPC分类号： B63G1/00 ,  F16F5/00 ,  B63B17/0081

摘要： A system for mounting a device on board ship which experiences normal vibrations of a predetermined frequency and which may be subjected to high intensity shock forces including a plurality of preloaded liquid springs operable in tension and compression and oriented in a truss configuration between the deck of the ship and the device, the casings of the liquid springs having a natural frequency in excess of the normal shipboard vibrational frequencies and by virtue of being preloaded providing rigid linkages for transmitting normal shipboard vibrational frequencies to the device, the preloading being of such a magnitude to permit the liquid springs to yield in either tension or compression when the ship is subjected to high intensity shock forces such as weapons effect pulses, and the liquid springs resetting the device to its normal position relative to the ship after termination of the high intensity shock forces.

摘要翻译： 一种用于安装在船上的装置，其经受预定频率的正常振动并且可能经受高强度冲击力，所述冲击力包括可在拉伸和压缩中操作的多个预加载的液体弹簧，并且在桁架构型中位于 船舶和装置，液体弹簧的壳体具有超过正常船上振动频率的固有频率，并且由于预加载提供用于将正常船上振动频率传输到装置的刚性连接，所述预加载具有如此大小的预加载 当船受到诸如武器效应脉冲的高强度冲击力时，允许液体弹簧以张力或压缩力产生，并且液体弹簧在高强度冲击力终止之后将装置重置为相对于船舶的正常位置 。