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    • 1. 发明授权
    • Remote controlled garage door opening system
    • 遥控车库门开启系统
    • US06667684B1
    • 2003-12-23
    • US09521510
    • 2000-03-08
    • Dennis W. WaggamonWillem J. MarneweckVivien N. DelportFrederick J. Bruwer
    • Dennis W. WaggamonWillem J. MarneweckVivien N. DelportFrederick J. Bruwer
    • B60R2500
    • G07C9/00309G07C2009/00793G08C17/02G08C19/28G08C2201/62H04J13/0074Y10T70/5973
    • 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 “grabbing”. 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.
    • 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。
    • 5. 发明授权
    • Method, system and apparatus for determining that a programming voltage
level is sufficient for reliably programming an eeprom
    • 用于确定编程电压电平足以可靠地编程eeprom的方法,系统和装置
    • US6166960A
    • 2000-12-26
    • US405450
    • 1999-09-24
    • Willem J. MarneweckWillem SmitMeiling Chen
    • Willem J. MarneweckWillem SmitMeiling Chen
    • G11C17/00G06F12/16G06F15/78G11C16/02G11C16/06G11C16/14G11C16/22G11C16/30G11C29/12G11C16/04
    • G11C16/225G11C16/30
    • An electronic system, comprising a digital processor and an EEPROM, has circuit logic and program software or firmware for determining if a programming voltage level is sufficient for reliably programming the EEPROM. A charge pump is enabled and generates a voltage used for programming of the EEPROM. The enabled charge pump thereby loads a battery power supply. In addition, a test load may be connected to the output of the charge pump to simulate the EEPROM load during a programming operation to the EEPROM. The charge pump output voltage is measured to determine if at least a desired voltage value is obtained. Once the charge pump voltage level has been pre-qualified for the desired voltage value, an actual programming operation to the EEPROM may be performed. If the voltage level does not reach the desired value then a programming operation is inhibited and the electronic system may alarm or shut down operation. The charge pump voltage level is a good indication and measure of battery charge condition under actual EEPROM programming load conditions.
    • 包括数字处理器和EEPROM的电子系统具有用于确定编程电压电平是否足以可靠地编程EEPROM的电路逻辑和程序软件或固件。 电荷泵使能并产生用于EEPROM编程的电压。 启用的电荷泵因此加载电池电源。 此外,可以在EEPROM的编程操作期间将测试负载连接到电荷泵的输出以模拟EEPROM负载。 测量电荷泵输出电压以确定是否获得至少一个期望的电压值。 一旦电荷泵电压电平已经被预先限定了所需的电压值,则可以执行到EEPROM的实际编程操作。 如果电压电平未达到所需值,则禁止编程操作,电子系统可能会报警或关闭操作。 在实际的EEPROM编程负载条件下,电荷泵电压电平是电池充电状态的良好指示和测量。