In a work machine which includes a working head including a lifting and lowering unit including a working device and a first lifting and lowering device which lifts and lowers the working device, and a second lifting and lowering device which lifts and lowers the lifting and lowering unit, a positional deviation (Δx, Δy) of the working device in a direction which is perpendicular to a lifting and lowering direction is eliminated. Since the positional deviation is caused by both an inclination of a lifting and lowering axis line L.sub.1 of the working device by the first lifting and lowering device and an inclination of a lifting and lowering axis line L.sub.2 of the lifting and lowering unit by the second lifting and lowering device, based on positional deviation data a target moving position is corrected.

A table assembly comprising a worktop, a frame supporting the worktop, an integrated drive subassembly, a memory storing defined conditions, a control system including a user input control interface and at least one processor, the input control interface for receiving user commands to initiate changes in worktop height, the processor programmed to perform the steps of a) at any time, respond to direct manual user input via the interface to change the worktop height and b) enable a reminder function to periodically change the worktop height by i) monitoring worktop use, ii) comparing worktop use to at least one of the defined conditions, iii) after the at least one condition is met, providing a signal to the user to change the worktop height to a different position, iv) monitoring for user input via the interface to change the worktop height and (v) upon each of the worktop height being changed prior to providing a signal to the user to change the worktop height and the worktop height being changed subsequent to providing a signal to the user to change the worktop height, repeating steps (i) through (v).

A height adjustable table assembly system comprising a worktop, a frame, a height adjustment subassembly integrated into the table assembly and adapted to cause worktop elevation adjustment, a user interface and a processor programmed to perform the steps of, while the worktop is at a current elevation position, upon sensing a quick multiple activation of the interface, controlling the height adjustment subassembly to move the worktop to a stored elevation position and upon sensing a prolonged activation of the interface, controlling the height adjustment subassembly to change worktop elevation while the prolonged activation persists.

Methods and systems for reminding a user to adjust a height adjustable workstation that includes a worktop supported by a frame, an interface including user input controls and a vertical displacement drive mechanism, the user input controls including at least one input control, each of the user input controls for receiving manual direct user selections from a workstation user to activate the drive mechanism to initiate worktop elevation adjustments to a different worktop elevation positions, an exemplary method comprising the steps of monitoring at least one condition related to ongoing use of the worktop over a period of time while a user is associated with the worktop and when the at least one condition occurs, without any user selection to initiate a change in worktop height via the interface subsequent to the at least one condition occurring, moving the worktop to remind the user to perform some activity.

A system for adjusting a height of a workstation, comprising a height adjust system for a workstation, the height adjust system being adjustable in elevation, a worktop mounted to the height adjustment system for movement therewith to different positions, a first sensor device for sensing the presence of a workstation user within a space associated with the workstation, a processor that tracks and stores at least the duration of time that the worktop is in at least one of a sitting position and a standing position while a user is within the space associated with the workstation, the processor further providing a user with a reminder to change a current position of the worktop to another position.

A height adjustable table assembly system comprising a worktop, a frame, a height adjustment subassembly integrated into the table assembly and adapted to cause worktop elevation adjustment, a user interface and a processor programmed to perform the steps of, while the worktop is at a current elevation position, upon sensing a quick multiple activation of the interface, controlling the height adjustment subassembly to move the worktop to a stored elevation position and upon sensing a prolonged activation of the interface, controlling the height adjustment subassembly to change worktop elevation while the prolonged activation persists.

A semiconductor wafer position display system, a semiconductor wafer position display method, and a semiconductor wafer position display program with which a deviation from an appropriate placement position of a semiconductor wafer mounted in a wafer mounting part can be displayed to a user in an easily understood manner are provided. The semiconductor wafer position display system includes: a data reception unit for receiving measurement data obtained by a semiconductor wafer position measurement device for measuring the deviation from the appropriate placement position of the semiconductor wafer mounted in the wafer mounting part; and a screen display control unit for controlling a display screen for visibly displaying the deviation from the appropriate placement position of the semiconductor wafer based on the measurement data received by the data reception unit, wherein the screen display control unit includes a circumference display screen control unit for presenting the deviation from the appropriate placement position of the semiconductor wafer by displaying a circumference of the semiconductor wafer based on the measurement data received by the data reception unit.

A system and method for controlling a height adjustable workstation that includes a worktop supported by a frame, a processor, and a vertical displacement drive mechanism controllable by the processor to change the elevation of the worktop to different worktop elevation positions, the method comprising the steps of sensing the presence of a workstation user within a space associated with the workstation, tracking the duration of time that the worktop is in at least a first position while a user is within the space associated with the workstation and providing the user with a reminder to change the current position of the worktop to another position when the tracked duration of time reaches a threshold level by driving the worktop through at least one vertical displacement that is perceptible to the workstation user.

A system for adjusting the height of a workstation for use by a user, the system comprising a frame, a worktop having an upper work surface, the worktop being vertically slidably attached to said frame and selectably adjustable in elevation to different positions including at least a first standing position and at least a first sitting position and a processor tracking a first duration of time that the worktop is in at least one of a standing position or a sitting position and generating ongoing statistical data associated with the first duration on an ongoing basis by comparing the first duration to a time period as the user is using the workstation during an ongoing prolonged period of time.

A workstation system for tracking workstation activity, the system comprising a database storing user specific information including at least one user goal associated with user activity at the workstation, the workstation including at least a first sensor, the at least a first sensor automatically collecting data useable to determine identity of a user within a space associated with the workstation and collecting user biometrics, a first reminder device and the system further including at least a first processor linked to the at least a first sensor and the reminder device, the processor receiving data from the at least a first sensor device and using the received data to attempting to determine the identity of the user that occupies the space, upon identifying the first system user, the processor tracking user biometrics, programmed to access at least a subset of the information associated with the first user and use the accessed information for the user as well as the user biometrics to automatically generate periodic reminders for the first system user via the reminder device to perform at least one activity.