The present invention is a system and method for retrieving segments of stored video programs using closed caption text data. The closed caption text data is extracted from video programming signals received by the invention. Text records based on the extracted closed caption data are generated....http://www.google.de/patents/US5703655?utm_source=gb-gplus-sharePatent US5703655 - Video programming retrieval using extracted closed caption data which has been partitioned and stored to facilitate a search and retrieval process 
