Technique for securely storing data within a memory
    1.
    发明授权
    Technique for securely storing data within a memory 有权
    用于将数据安全地存储在存储器内的技术

    公开(公告)号:US06938163B1

    公开(公告)日:2005-08-30

    申请号:US09525230

    申请日:2000-03-14

    摘要: A technique for securely storing data within a memory is disclosed. In a preferred embodiment, the technique is realized by encrypting the data using a non-verifiable personal identifier, and then encrypting a reminder using the same non-verifiable personal identifier. The encrypted data and the encrypted reminder are then stored in the memory. The stored encrypted data and the stored encrypted reminder can only be correctly decrypted using the non-verifiable personal identifier. Also, a correctly decrypted reminder provides an indication of correctly decrypted data. The non-verifiable personal identifier is not stored in the memory so as to insure security of the system.

    摘要翻译: 公开了一种用于将数据安全地存储在存储器内的技术。 在优选实施例中,该技术通过使用不可验证的个人标识符加密数据,然后使用相同的不可验证的个人标识符加密提醒来实现。 然后将加密的数据和加密的提醒存储在存储器中。 存储的加密数据和存储的加密提醒只能使用不可验证的个人标识符正确解密。 此外,正确解密的提醒提供了正确解密的数据的指示。 不可验证的个人标识符不存储在存储器中,以确保系统的安全性。

    Method and apparatus for synchronizing databases in portable communication devices
    2.
    发明授权
    Method and apparatus for synchronizing databases in portable communication devices 失效
    用于在便携式通信设备中同步数据库的方法和装置

    公开(公告)号:US06968209B1

    公开(公告)日:2005-11-22

    申请号:US09507685

    申请日:2000-02-22

    摘要: A checksum is calculated on a database stored in a SIM card when changes are made to a database stored therein. This checksum can be stored in a mobile phone, e.g., with the change log. When synchronization between devices is to be performed, another checksum can be calculated on the database stored in the SIM card. If the stored checksum does not match the calculated checksum, then a change has occurred in the contents of the database that is not reflected in the change log. Accordingly, a full synchronization process can be performed wherein the database records in each device can be compared. If, on the other hand, the checksums match, then the change log accurately reflects any changes made to the database stored in the SIM card and the synchronization process can proceed more expediently using the change log.

    摘要翻译: 当对存储在其中的数据库进行改变时,在存储在SIM卡中的数据库上计算校验和。 该校验和可以存储在移动电话中,例如与变更日志一起存储。 当要执行设备之间的同步时,可以在存储在SIM卡中的数据库上计算另一个校验和。 如果存储的校验和与计算的校验和不匹配,则在数据库的内容中发生了未反映在更改日志中的更改。 因此,可以执行完全同步过程,其中可以比较每个设备中的数据库记录。 另一方面,如果校验和匹配,则更改日志将准确地反映对存储在SIM卡中的数据库所做的任何更改,同步过程可以更方便地使用更改日志进行。

    Power consumption reporting by an accessory of an electronic device
    3.
    发明授权
    Power consumption reporting by an accessory of an electronic device 有权
    电子设备附件的功耗报告

    公开(公告)号:US06433512B1

    公开(公告)日:2002-08-13

    申请号:US09466654

    申请日:1999-12-20

    IPC分类号: H02J700

    摘要: A method, system, and apparatus enables an electronic device in communication with an accessory to accurately report a remaining battery life when the accessory provides information relating to a power usage to the electronic device. In one embodiment, the accessory draws power from a battery of the electronic device, and the electronic device is able to more accurately estimate a remaining battery life by considering the power usage information provided from the accessory. The electronic device may thereafter indicate to a user the remaining battery life. In one alternative of this embodiment, the information relating to the power usage is in the form of a current consumption of the accessory. In another embodiment, the electronic device indicates a remaining battery life of a battery of an accessory.

    摘要翻译: 一种方法,系统和装置使得当附件提供与电子设备的电力使用有关的信息时,与附件通信的电子设备能准确地报告剩余电池寿命。 在一个实施例中,附件从电子设备的电池抽取电力,并且电子设备能够通过考虑从附件提供的电力使用信息来更准确地估计剩余电池寿命。 电子设备之后可以向用户指示剩余的电池寿命。 在该实施例的一个替代方案中,与电力使用相关的信息是附件的电流消耗的形式。 在另一个实施例中,电子设备指示附件的电池的剩余电池寿命。