Teaching system employing a television receiver

Claim 1

A system useful as a teaching machine or polling television receivers comprising in combination: a. a source of video signals which constitute the basic image being transmitted; b. image reproduction means for displaying said basic image; c. manually movable probe means operable directly upon said image reproduction means to electronically define and identify an X - Y-coordinate in self-defining registration with respect to said image; d. means for pre-defining various fixed sets of X''- and Y'' coordinates constituting choices of positions relative to the same frame of reference as that of the basic image; e. comparator means whereby sets of X''- and Y'' -coordinate information previously defined are directly compared with said probe means defined X- and Y-coordinate information such that said X- and Y-coordinates are identified with one specific set of X''- and Y''-coordinates; and f. storage means containing a fixed, predetermined store of additional information such that the X''- and Y''-coordinates so identified control the output of said stored additional information means.

Claim 2

A system useful as a teaching machine or polling television receivers comprising in combination: a. a source of video signals which constitute the basic image being transmitted; b. image reproduction means for displaying said basic image; c. manually movable probe means operable directly upon said image reproduction means to electronically define and identify an X - Y-coordinate in self-defining registration with respect to said image; d. means for pre-defining various fixed sets of X''- and Y'' coordinates constituting choices of positions relative to the same frame of reference as that of the basic image; e. comparator means whereby sets of X''- and Y'' -coordinate information previously defined are directly compared with said probe means defined X- and Y-coordinate information such that said X- and Y-coordinates are identified with one specific set of X''- and Y''-coordinates; and f. storage means containing a fixed, predetermined store of additional information such that the X''- and Y''-coordinates so identified control the output of said stored additional information means.