Abstract: An object-oriented system for generating and displaying control items that allow users of an interactive network to recognize and select control functions via a graphical user interface. The manipulation of the control items on a display screen is linked to a set-top terminal associated with the interactive network. The control items, which can be visible or audible, are associated with control objects. Control objects are arranged in a hierarchy, and can contain one or more child control objects. Attributes of a child control object are inherited from an ancestor control object. A control item can be graphically manipulated independently by drawing the control item into its own sprite, or can be manipulated by drawing the control item into the sprite of a parent. The system provides building blocks of control elements that can be composed and customized to produce versatile interfaces for applications and content.

Abstract: A thumbpad input device that enables a user to generate direction and speed by manipulating a round elastic pad. The underside of the pad is lined with a set of uniformly spaced contacts positioned in a circular pattern. Each contact is paired with a corresponding switch that is coupled to a circuit board. When a user presses down on the pad, one or more contacts close their respective switches. The pad contacts and switches are designed so that the number of closed switches varies with the magnitude of the force applied to the pad. The thumbpad input device has a micro controller that monitors the switches. It determines the most clockwise closed switch and the most counter-clockwise closed switch. Presumptively, these two closed switches define the two endpoints of an arc of all closed switches. These endpoints are then forwarded to a host processor.

Abstract: A video control user interface is provided for use in an interactive television system. The video control user interface includes a remote control handset with a multi-purpose, multi-direction actuation pad and a set-top box configured to operate in different modes, including a movie-on-demand mode. In this mode, the set-top box receives digitally transmitted video data streams of a selected movie from a centralized head end server. During display of a video movie, the set-top box can cause, at the viewer's request, the television to display an icon representing a physical layout of the actuation pad on the remote control handset and one or more symbols arranged at locations relative to the icon. The symbols relate to shuttle controls for controlling viewing of the video movie. This user interface presents an intuitive visual mapping of the shuttle controls about the depicted icon onto physical actuation positions of the multi-direction pad on the remote control handset.

Abstract: A video control user interface is provided for use in an interactive television system. The video control user interface includes a remote control handset with a multi-purpose, multi-direction actuation pad and a set-top box configured to operate in different modes, including a movie-on-demand mode. In this mode, the set-top box receives digitally transmitted video data streams of a selected movie from a centralized head end server. During display of a video movie, the set-top box can cause, at the viewer's request, the television to display an icon representing a physical layout of the actuation pad on the remote control handset and one or more symbols arranged at locations relative to the icon. The symbols relate to shuttle controls for controlling viewing of the video movie. This user interface presents an intuitive visual mapping of the shuttle controls about the depicted icon onto physical actuation positions of the multi-direction pad on the remote control handset.