| 摘要 |
The invention relates to a method for the rental of image projectors, in which a customer is provided with an image projector over an extended period. In accordance with embodiments of the invention, the image projector is arranged to sense and monitor usage during the extended period and, in at least one aspect of the invention, transmit a signal indicative of the same to a remote processing system. The remote processing system evaluates a cost corresponding to the usage and the customer is charged accordingly. The transmitted signal includes data relating to a temporal characteristic of the monitored usage within the extended period, in particular the time that the equipment was actually in use, so that the customer is only charged for the time that the image projector was actually in use.
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