Abstract: A method of operating a user device includes: receiving a command from a user to power on the user device, wherein the user device includes information on a restricted zone associated with the user device; detecting, by a monitoring entity of the user device without involvement of any device external to the user device, whether the user device is located within the restricted zone in response to the user device being powered on and before an operating system of the user device is executed; and granting access of the user to the user device by the monitoring entity in response to detecting the user device as being within the restricted zone.

Abstract: A method of operating a user device includes: detecting whether the user device is located within a restricted zone by a monitoring entity of the user device; and limiting access to the user device by the monitoring entity in response to detecting the user device as being outside the restricted zone.

Abstract: A method of operating a user device includes: detecting whether the user device is located within a restricted zone by a monitoring entity of the user device; and limiting access to the user device by the monitoring entity in response to detecting the user device as being outside the restricted zone.

Abstract: A system and method for transporting wafer lots to desired destinations. The system includes a wafer lot status database unit, status storage, a filtering rule base, and a dispatch control unit. First, status records are input from the wafer lot status database by the dispatch control unit repeatedly for a predetermined period of time. Then, the dispatch control unit inputs a status tree and selects candidate wafer lots using the filtering rule and generates transport commands for candidate wafer lots to the transport unit. Finally, the transport unit transports the candidate wafer lots to the desired destination according to the transport commands.

Abstract: A parallel control method for sequential process control flow. First, a parallel step including a plurality of independent sub-steps is generated in a sequential process control flow. One of the sub-steps is directed to execute at a time, and any sub-step gains the right to execute when the other sub-steps are in waiting state. It is assessed the parallel step is complete by whether all of the sub-steps are complete, and the sequential process control flow is controlled to a next step succeeding the parallel step if the parallel step is complete.

Abstract: A parallel control method for sequential process control flow. First, a parallel step including a plurality of independent sub-steps is generated in a sequential process control flow. One of the sub-steps is directed to execute at a time, and any sub-step gains the right to execute when the other sub-steps are in waiting state. It is assessed the parallel step is complete by whether all of the sub-steps are complete, and the sequential process control flow is controlled to a next step succeeding the parallel step if the parallel step is complete.

Abstract: A system and method for transporting wafer lots to desired destinations. The system includes a wafer lot status database unit, status storage, a filtering rule base, and a dispatch control unit. First, status records are input from the wafer lot status database by the dispatch control unit repeatedly for a predetermined period of time. Then, the dispatch control unit inputs a status tree and selects candidate wafer lots using the filtering rule and generates transport commands for candidate wafer lots to the transport unit. Finally, the transport unit transports the candidate wafer lots to the desired destination according to the transport commands.