File directory information contained on a portable self contained data storage device is read by a portable file reading apparatus that is not connected to nor is a personal computer. The file reading apparatus includes a housing of a size and weight capable of being held within the person's hands. A...http://www.google.com.hk/patents/US6958903?utm_source=gb-gplus-share專利 US6958903 - Data storage device reader and method of using same
