Apparatus and method for securing electronic information in a wireless
communication device
    1.
    发明授权
    Apparatus and method for securing electronic information in a wireless communication device 失效
    一种用于在无线通信设备中确保电子信息的装置和方法

    公开(公告)号:US5954817A

    公开(公告)日:1999-09-21

    申请号:US775656

    申请日:1996-12-31

    摘要: An apparatus (200) for securing electronic information (205) includes a microcontroller (202) and an external memory (204) coupled thereto. The microcontroller (202) comprises a one-time programmable security flag (230) that is programmed when the electronic information (205) is stored in the memory (204). Once programmed, the security flag prevents reprogramming of the memory (204). Additionally, the microcontroller (202) comprises an algorithm (400) that generates electronic authentication information (207) from the electronic information (205). The authentication information (207) is stored in the memory (204) along with the electronic information (205). Upon retrieval from the memory (204) for registration, the electronic information (205) is authenticated by generating new electronic authentication information (508) via the algorithm (400) to compare to the authentication information (207) stored in the memory (204). Such authentication prevents swapping out of the memory (204) to gain system access.

    摘要翻译: 一种用于保护电子信息(205)的装置(200)包括微控制器(202)和耦合到其上的外部存储器(204)。 微控制器(202)包括当电子信息(205)存储在存储器(204)中时被编程的一次可编程安全标志(230)。 一旦被编程,安全标志就防止重新编程存储器(204)。 另外,微控制器(202)包括从电子信息(205)生成电子认证信息(207)的算法(400)。 认证信息(207)与电子信息(205)一起存储在存储器(204)中。 当从用于注册的存储器(204)检索时,电子信息(205)通过经由算法(400)生成新的电子认证信息(508)进行认证,以与存储在存储器(204)中的认证信息(207)进行比较, 。 这种认证防止从存储器(204)中的交换以获得系统访问。

    Apparatus and method for discontinuously operating a receiver
    2.
    发明授权
    Apparatus and method for discontinuously operating a receiver 失效
    用于不连续操作接收器的装置和方法

    公开(公告)号:US5878336A

    公开(公告)日:1999-03-02

    申请号:US624656

    申请日:1996-03-22

    IPC分类号: H04B1/16 H04M1/73

    CPC分类号: H04W52/0229

    摘要: An apparatus for discontinuously operating a receiver (302) includes a receive data circuitry (304) and processor circuitry (306). The apparatus and receiver (302) are incorporated in a communication device (104). The receiver (302) receives a communication signal (106) having a plurality of frames (200, 214, 224). Each of the frames has a synchronization field (202, 217, 222) followed by a data field (204, 218, 228). The receive data circuitry (304) synchronizes the communication device (104) with the communication signal (106) received by the receiver (302) according to an initial synchronization field (202). The receive data circuitry (304) decodes the following data field (204). The processor (306) evaluates the decoded data field. If the decoded data field indicates that the receiver (302) is locked, the processor (306) powers off the receiver (302) for the following synchronization fields (222).

    摘要翻译: 用于不连续地操作接收机(302)的装置包括接收数据电路(304)和处理器电路(306)。 装置和接收器(302)并入通信装置(104)中。 接收机(302)接收具有多个帧(200,214,224)的通信信号(106)。 每个帧具有随后是数据字段(204,218,228)的同步字段(202,217,222)。 接收数据电路(304)根据初始同步字段(202)将通信设备(104)与由接收机(302)接收的通信信号(106)同步。 接收数据电路(304)对以下数据字段(204)进行解码。 处理器(306)评估解码的数据字段。 如果解码的数据字段指示接收机(302)被锁定,则处理器(306)为接下来的同步字段(222)关闭接收机(302)。

    Method and apparatus for transferring data between electrical components
    3.
    发明授权
    Method and apparatus for transferring data between electrical components 有权
    用于在电气部件之间传送数据的方法和装置

    公开(公告)号:US06408340B1

    公开(公告)日:2002-06-18

    申请号:US09633586

    申请日:2000-08-07

    IPC分类号: G06F1516

    CPC分类号: H03D3/007 G11B20/10

    摘要: A method of transferring data between a first electrical component (16) and a second electrical component (18), which are both coupled to a common oscillator (62) that oscillates at a first frequency, the first electrical component (16) generating a first bit stream having a second frequency that is a fraction of the first frequency and having a first number of bits, generating an indicator signal having a third frequency that is a fraction of the first frequency and that is indicative of a type of data represented by the first bit stream, and coupling the first bit stream and the indicator signal to the second electrical component. The second electrical component (18) sampling the first bit stream and the indicator signal at a fourth frequency that is substantially identical to the second frequency, thereby recovering the first bit stream generated by the first electrical component (16) and determining the type of data contained in the first bit stream.

    摘要翻译: 一种在第一电气部件(16)和第二电气部件(18)之间传送数据的方法,所述第一电气部件(16)和第二电气部件(18)均耦合到以第一频率振荡的公共振荡器(62),所述第一电气部件(16) 比特流具有第二频率,其是第一频率的一部分并且具有第一数量的比特,产生具有第三频率的指示符信号,该第三频率是第一频率的一部分,并且指示由所述第一频率表示的数据类型 第一比特流,并将第一比特流和指示符信号耦合到第二电子部件。 第二电气部件(18)以与第二频率基本相同的第四频率对第一比特流和指示符信号进行采样,由此恢复由第一电气部件(16)生成的第一比特流并确定数据的类型 包含在第一位流中。