Patent References 3345610 Method for dynamically viewing image elements stored in a random access memory array Multi-function electrical controlling device Device for delineating zones in a video image display Patent #: 4245244 InventorAssigneeApplicationNo. 06/348518 filed on 02/12/1982US Classes:345/661, Graphical user interface tools345/161, Joystick345/184, Mechanical control (e.g., rotatable knob, slider)345/672TranslationExaminersPrimary: Curtis, Marshall M.Attorney, Agent or FirmInternational ClassG06F 3/023 (20060101)AbstractInformation presented on a visual display is varied in content and size through the use of a single operator-manipulated input device. The foregoing is accomplished through the use of a novel command signal generator which includes a pivotally mounted rotatable shaft, high-resistance switches operatively associated with the shaft and logic circuitry responsive to command signals provided by the switches and by shaft rotation sensors for generating display control signals. | |