Abstract: The present invention provides a method and apparatus, including a processor and software incorporating a table that contains sets of pre-determined correction values that are used to supply different amounts of power to an electric stepper motor when the motor is operating at different speeds. Use of the correction values in the table allows power to be supplied to the motor in differing amounts that are approximately the same as the power actually required by the motor at different motor speeds or ranges of speeds.

Abstract: The present invention provides a method and apparatus, including a processor and software incorporating a table that contains sets of pre-determined correction values that are used to supply different amounts of power to an electric stepper motor when the motor is operating at different speeds. Use of the correction values in the table allows power to be supplied to the motor in differing amounts that are approximately the same as the power actually required by the motor at different motor speeds or ranges of speeds.

Abstract: Disclosed is a method for reducing the burning of the phosphor of cathode ray tube (CRT) monitor screens used in television systems where necessary textual information is constantly displayed over a video image on the CRT screen. The method involves periodically changing the location of the textual information overlaid onto the video image without altering the information itself so that the information is continuously available, but does not remain in the same place for a prolonged time period which might otherwise burn into the phosphor of the CRT screen. The textual information may be moved as frequently as once per hour to as seldom as once every week or more; and may be move as little as one pixel to as much as several character positions. It is preferred that timing and location of movement of the textual information not be annoying to the user, and that the textual information be positioned discretely on the CRT screen in order to avoid blockage of the underlying video image as much as possible.