| 摘要 |
<p>A technique for reconfiguring in the field postage meters having a set of features that may be selectively enabled or disabled by software. The technique provides security so that the meter company will always have a correct record of the configuration of the meter (10) in the field. The meter (10) is capable of being put into a configuration mode by suitable entries from the keyboard (14), in which mode it is inhibited from printing postage. The meter (10) has a storage register (26) for a current or old meter type, and can receive a desired new meter type via keyboard (14) entry. The meter (10) generates an encrypted configuration request code that is partially based on the values of the old and new meter types. The configuration request code, when communicated to the data center computer along with other validating identification information, is checked by the data center computer which generates the configuration request code using the same algorithm. If the two values agree, the data center computer generates an encrypted configuration enable code. This is communicated to the meter (10), which receives the computer generated configuration enable code and also generates an internal configuration enable code using the same algorithm as the data center computer. If the configuration enable codes agree, the meter (10) overwrites the old meter type number with the new meter type number, thereby reconfiguring the meter (10).</p> |
