Method and apparatus for determining viewer response to...

Details Method and apparatus for determining viewer response to... Method and apparatus for determining viewer response to...

A - Human Necessities

61

B

88/121.5

A61B 3/00 (2006.01)

Patent

CA 1211969

- 13 - Abstract of the Disclosure A system for monitoring viewer response to visual stimuli having two slide projectors 112, 14) keyed for the simultaneous slide transport and optional viewing modes. The procedure includes projecting images from one slide projector (12) on screen (24), as seen at a normal viewing distance, and providing a viewer control close-up switch (38) for selectively switching to the other slide projector (14) for projecting an enlarged magnified view of the same image. A recording apparatus or printing device (40) is included for denoting the subject matter viewed in the enlarged format. The number of times the enlarged image slides are viewed provides a data base for market research.

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