| 摘要 |
<p>The autonomous switch system uses codes which are set in place in advance for a period of time - 6 months for example. The codes are programmed to change at a chosen frequency - weekly for example. This takes place automatically without any new external programming, in order to maintain the security of the system over an extended period of time. The autonomous switch system uses codes for control - for example to control access, starting, ignition, opening etc. The first element of the system (1) comprises a support for the definition of codes, defining the codes which are in place at a given instant. The codes are defined in advance for a period of time - 6 months, 1 year or 10 years for example, and are arranged to change at a chosen frequency - every few minutes, every half hour or weekly for example. This takes place automatically without any new external programming. The programming may be achieved using a digital code, an alphanumeric code, a logical, mechanical or colour based code. A second element (2) comprises a reader for the codes entered by users, and a third element determines whether the code entered by a user is valid in order to authorise the access, starting or ignition etc.</p> |
