Optics: image projectors – Selective data retrieval
Patent
1974-12-13
1977-03-15
Botz, Eugene G.
Optics: image projectors
Selective data retrieval
353 27A, 3401725, G03B 2308
Patent
active
040121321
ABSTRACT:
Television broadcast market survey data is recorded on microfiche and displayed on a microfiche reader. The data is recorded in basic data zones each of which is reserved for a single market, such as New York, Los Angeles, Detroit or one of the hundreds of other designated market areas of the U.S.A. Each data zone is of the same size regardless of the size of the market or whether the amount of data to be stored is sufficient to fill the zone. The data is divided into several parts, such as "network program averages," "program audience averages," "time period averages," "day-part summaries" etc. A separate location is reserved within each basic data zone for each type of data, and each type of data always appears at the same location in each data zone. Each fiche is assigned a code representing a broadcast market, and is selected by operating keys on the reader device. The data is recorded in pages at specific coordinates, and a page selector key array is provided for selecting a page on a given fiche for enlargement and display by the reader. The page locations are encoded according to the type of data involved and the zone in which it is to be recorded. An integral number of broadcast markets is included on each fiche. Preferably, two data zones are located on each fiche. Both relate to the same market, but are from different rating sources or organizations. The pages are encoded in sequence such that the same type of information (e.g. day-part summary) for a given market from each source can be viewed quickly and easily. The market information is modified to place it in a format suitable for use by a COM microfiche recorder to produce the fiche described above.
REFERENCES:
patent: 3704451 (1972-11-01), Pearson
patent: 3799664 (1974-03-01), Nicholson
American Broadcasting Companies, Inc.
Botz Eugene G.
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