Abstract: According to principles of the invention, a distributed data processing system having a host computer coupled by way of a network to one or more peripheral devices is presented. In part, this distributed data processing system has advantages over current technologies because executables run on a host device can also be downloaded and executed on a target peripheral device. The virtual machine instruction processor located in the host machine and the peripheral device run the same instruction set and therefore readily share executables. This capability opens up robust communication between the peripheral device and the host machine and sophisticated peripheral device management and administration.

Abstract: A lens assembly, image capturing device and a method for using a lens assembly with an image capturing device. The lens assembly comprises a first lens mounted on a holder which attaches the first lens to a viewing device of an image capturing device. A marking on the first lens is observable through the viewing device when the lens is attached to the viewing device such that the marking is capable of being used to position the lens assembly a properly focused distance from a target having a specified (predetermined) size. The relationship, as seen through the viewing device between the size of the object and the size of the marking may be used to properly position the camera relative to the target object.