1. A system to detect garbled closed captioning data, comprising: a receiver to receive an encoded video data stream containing closed captioning data; a decoder to decode the encoded video data stream, and to reorder frames in the encoded video stream into display order; a closed captioning data detector to detect closed captioning data in the decoded, reordered video data stream; a data extractor to extract individual data elements from the detected closed captioning data; a data counter to count a total number of data elements in the closed captioning data as a total data element count, and to count a total number of data elements in the closed captioning data having a particular characteristic as a total data element characteristic count; a memory in which to store the total data element count and the data element characteristic count in the memory; a garbled closed captioning data detector to determine a metric as a function of the total data element count and the total data element characteristic count; and an alert generator that generates an alert in accordance with the determined metric.
1. A system to detect garbled closed captioning data, comprising: a receiver to receive an encoded video data stream containing closed captioning data; a decoder to decode the encoded video data stream, and to reorder frames in the encoded video stream into display order; a closed captioning data detector to detect closed captioning data in the decoded, reordered video data stream; a data extractor to extract individual data elements from the detected closed captioning data; a data counter to count a total number of data elements in the closed captioning data as a total data element count, and to count a total number of data elements in the closed captioning data having a particular characteristic as a total data element characteristic count; a memory in which to store the total data element count and the data element characteristic count in the memory; a garbled closed captioning data detector to determine a metric as a function of the total data element count and the total data element characteristic count; and an alert generator that generates an alert in accordance with the determined metric. 5. The system recited in claim 1 , wherein the data counter uses a data delimiter to identify unique data elements within the closed captioning data for determining total data element count and total data element characteristic count.