| 摘要 |
<p>A method of monitoring events in a digital television studio. The event monitoring protocol uses a object-based control system wherein any studio component (or object associated therewith) forms an observer that may request certain events to be sent through an event channel to the observer. The observer sends a defined data structure to establish and define the type of event to be monitored. The event structure includes an action field, a basis field, and a condition field. The action field defines the action that is to occur when the event occurs, e.g., notify the observer, turn on power, send warning, and the like. The basis field defines the cause of the event, e.g., tape ends, power is off, and the like. The condition field establishes conditions on the basis such that both the condition and the basis must be fulfilled (i.e., be TRUE) for the action to be performed. When the event occurs, i.e., the basis and condition(s) are fulfilled and the action is performed, the event generator or sender, produces an event message that is propagated through the event channel to the observer. The event message communicates the time of the event, the type of event, the severity of the event, event categorization information, and any parameters that are associated with the event that may be required by the observer. <IMAGE></p> |
