Abstract
We describe a Videocassette Recorder (VCR)-based information system whereby we can distribute frequently updated large pictorial databases to individual users and provide a variety of interactive video services. The four key advantages of this system are: (1) economics, (2) good picture quality, (3) capability to reach nationwide users, and (4) ability to update the database frequently (say, daily, preferably in early morning hours when many transmission facilities are unused). An experimental home terminal consisting of a VCR driven by a personal computer for random-access searches was constructed to demonstrate this concept. The pictorial database used in the demonstration includes real estate listings, vacation guides, autos and Sears-type merchandise catalogs. We also make comparisons of this system to other video services and conclude that the present approach has potential advantages in many applications.
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