1. A system to detect garbled closed captioning data, comprising: a closed captioning data detector to detect closed captioning data in a video data stream; a word extractor/counter to extract individual words from the closed captioning data, to store a count of the total number of words in the closed captioning data in a memory, and to store a count of the total number of words having a desired word length or range of word lengths in the closed captioning data in the memory; a percentage threshold detector to determine a percentage of words having the desired length or range of lengths in the closed captioning data as a ratio of the count of the number of words in the closed captioning data having the desired length or range of lengths to the count of the total number of words in the closed captioning data; and an alert that is provided when the determined percentage exceeds a predetermined threshold.
6. The system recited in claim 1 , wherein the predetermined percentage is in the range from 5 percent to 10 percent.