VIDAC (Video Audio Compressed), a new technology based upon non-real-time transmission of audiovisual information via conventional television systems, has been invented by the Westinghouse Electric Corporation. This system permits time compression, during storage and transmission of the audio component of a still visual-narrative audio presentation by a factor of 480:1. The Westinghouse Electric Corporation in close cooperation with the Veterans Administration and a number of other State and Federal agencies conceived and implemented a ten-week feasibility study of a central library medical information delivery system for rural users utilizing the Applied Technology Satellite (ATS-6) transmission facilities. Technically, the VIDAC protype system proved feasible for further development, and viewer evaluation indicated that users were highly positive about VIDAC and felt that it filled a specific need for improving the delivery of educational materials. Three schematic drawings illustrate the method used for compression. A 16-item bibliography is included. (Author/DS)