Education and demonstration – Audio recording – Operation of apparatus controlled by listener's response to...
Patent
1982-04-01
1984-08-07
Pinkham, Richard C.
Education and demonstration
Audio recording
Operation of apparatus controlled by listener's response to...
434335, G09B 706
Patent
active
044641249
ABSTRACT:
A magnetic tape player has a stereo playback head for reproducing information from adjacent channels on a magnetic tape on which there is recorded a series of questions and answers in successive blocks. In a first portion of each block a given question and a plurality of possible answers are recorded in both channels, in a second portion of the block a coded indication of the correct answer to the question is recorded in one channel, and in a third portion of the block a correct indication is recorded in one channel and an incorrect indication is recorded in the other channel. The second portion of the block is marked by a first tone to indicate the start of the decision time during which one of a plurality of answer buttons is to be depressed to select an answer and the third portion of the block is marked by a second tone to indicate the end of the decision time. The coded indication of the correct answer as derived from the second portion of the block is then compared with the answer button which has been depressed, and the result of this comparison controls the passing of the one or the other channel to an audio output during reproduction of the information recorded in the third portion of the block.
REFERENCES:
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patent: 3715811 (1973-02-01), Thompson et al.
patent: 3947972 (1976-04-01), Freeman
patent: 3996671 (1976-12-01), Foster
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Arad Avi
Kennedy Melvin
Nagel Dietmar
Romero Hugo
North American Foreign Trading Corporation
Picard Leo P.
Pinkham Richard C.
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