| 摘要 |
The invention relates to the sorting of parcels in several sort passes. In order avoid the need to read the address in each sort pass and in order to avoid printing a machine-readable identification code on each parcel, furthe r elements which are characteristic of the parcels are established during a first sort pass and memorised together with the distribution codes establish ed during the reading process. During subsequent sort passes, the characteristi c elements are simply measured and compared with the stored features. Matching parcels are assigned corresponding distribution codes. A special conveyance system with defined sequences guarantees that only n parcels have to be compared at a time,n representing maximum multiple delivery rate.
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