| 摘要 |
A portable data terminal including a processor, a plurality of system resources, data storage means configured to store a plurality of program instructions, the program instructions including at least one hardware device driver and at least one scan driver, an image engine including a host interface, an imager in communication with the host interface, an illumination assembly and an aimer assembly wherein the illumination and aimer assemblies are controlled by the processor according to instructions stored in the data storage means, and a data structure having at least one data type and at least one value, the data structure being defined by the scan driver wherein the scan driver is configured to modify the data structure and transfer at least one of the values of the data structure to the hardware device driver in order to manage acquisition and release of a system resource by the image engine.
|
