| 摘要 |
Many peripherals communicate with computers through Universal Serial Bus, which is the natural candidate for mobile point-to-point connectivity. The major issue associated with this connectivity is that USB employs a master-slave protocol, which relies on the intelligence of the host. Since all USB logical devices presents the same basic interface to the host. This allows the host to manage the relevant aspects of different the device in the same manner. The management assists the host in identifying and configuring the USB device interface while it carries and reports configuration related information. Some information reported is common among all logical devices. Other information is specific to the functionality provided by the device. Geiser Device is a universal device that allows for all document format data recognition as presently obtained in all cases of computer with USB adaptors. This technology communicates directly with its embedded descriptor system and a recognizing program document in the reproduction devices (printers and photocopiers) without having to connect any additional device, or use a single USB cable or personal computer as a host. It enables these document reproduction devices (printers and photocopiers) to achieve all that is being presently available in computers, for document reproduction in photocopiers and printers, storage and transfer of data and images as in cameras and phones.
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