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公开(公告)号:US06526144B2
公开(公告)日:2003-02-25
申请号:US09088556
申请日:1998-06-02
申请人: Vishal Markandey , Alan T. Wetzel , Fred J. Shipley , Roy I. Edenson , Ryan R. Middleton , William E. Cammack
发明人: Vishal Markandey , Alan T. Wetzel , Fred J. Shipley , Roy I. Edenson , Ryan R. Middleton , William E. Cammack
IPC分类号: H04L900
CPC分类号: H04N21/43632 , H04N5/913 , H04N7/1675 , H04N21/4367 , H04N2005/91364
摘要: A method of communicating from a transmitter to a receiver over a communication medium. For the transmitter, the method includes the step of formatting data into a data stream to be communicated across the communications medium. This data stream comprises a plurality of headers (PACK HEADER). Moreover, for each of the plurality of headers, the method performs two steps. First, the method modifies information encoded by the header by performing a bitwise logical operation between selected bits of the header (B) with a predetermined bit pattern (A). Second, the method transmits the plurality of headers on to the communications medium. For the receiver, the method includes the step of receiving the plurality of headers from the communications medium. Additionally, for each of the received headers, the receiver recovers the information encoded by the header.
摘要翻译: 一种通过通信介质从发射机到接收机进行通信的方法。 对于发射机,该方法包括将数据格式化成要在通信介质上传送的数据流的步骤。 该数据流包括多个头部(PACK HEADER)。 此外,对于多个头部中的每一个,该方法执行两个步骤。 首先,该方法通过在标题(B)的选定位之间以预定位模式(A)执行按位逻辑运算来修改由标题编码的信息。 第二,该方法将多个头部传送到通信介质。 对于接收机,该方法包括从通信介质接收多个报头的步骤。 此外,对于每个接收的报头,接收机恢复由报头编码的信息。
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公开(公告)号:US07237121B2
公开(公告)日:2007-06-26
申请号:US09954124
申请日:2001-09-17
CPC分类号: G06F21/10 , G06F21/575
摘要: A secure bootloader for securing software and systems in a digital device 110 by ensuring only encrypted and authenticated boot software is loaded and executed in the digital device 110. The encrypted boot software is read into the device 110 and authenticated. If the boot software is not authenticated, then the digital device 110 does not boot.
摘要翻译: 用于通过确保只有加密和认证的引导软件来保护数字设备110中的软件和系统的安全引导加载器在数字设备110中被加载和执行。 将加密的引导软件读入设备110并进行认证。 如果引导软件未被认证,则数字设备110不启动。
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