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1. 发明申请

US20040085185A1 Remote controlled garage door opening system 审中-公开
标题翻译：遥控车库门开启系统
公开(公告)号：US20040085185A1
公开(公告)日：2004-05-06
申请号：US10693748
申请日：2003-10-24
申请人： OVERHEAD DOOR CORPORATION , MICROCHIP TECHNOLOGY, INCORPORATED
发明人： Dennis W. Waggamon , Willem J. Marneweck , Vivien N. Delport , Frederick J. Bruwer
IPC分类号： H04Q001/00
CPC分类号： G07C9/00309 , G07C2009/00793 , G08C17/02 , G08C19/28 , G08C2201/62 , H04J13/0074 , Y10T70/5973
摘要： A remote control system for opening and closing a barrier, such as a garage door, includes an RF receiver and a plurality of RF transmitters. The transmitters and receiver include circuitry programmed to provide transmission of encrypted code signals each time the transmitters are used and employing a code hopping method which prevents unauthorized signal interception or code nullgrabbingnull. The system is operated in a code learning mode for the receiver by momentarily actuating a receiver learn mode button for receiving each transmitter identification code and a secret decryption key for that transmitter with the system automatically returning to the operate mode. Each transmitter identification and secret key code signal is automatically and randomly stored in an available and unused memory in the receiver circuitry. A multibit hopping code is transmitted from each transmitter to the receiver with each transmitter operation in the operate mode of the system and the hopping code changes with each transmission to prevent theft or code grabbing and resultant unauthorized operation of the system.
摘要翻译：用于打开和关闭屏障的遥控系统，例如车库门，包括RF接收器和多个RF发射器。发射机和接收机包括被编程为在每次使用发射机时提供加密代码信号的传输并采用防止未经授权的信号拦截或代码“抓取”的跳码方法的电路。系统以接收机的代码学习模式操作，通过立即启动用于接收每个发射机识别码的接收机学习模式按钮和用于该发射机的秘密解密密钥，系统自动返回到操作模式。每个发射机识别和秘密密钥码信号自动随机存储在接收机电路中的可用和未使用的存储器中。通过系统的操作模式中的每个发射机操作，从每个发射机向接收机发射多比特跳码，并且跳频码随着每次发射而改变，以防止窃取或代码抓取并导致系统的未经授权的操作。

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