TEACHING SYSTEM EMPLOYING A TELEVISION RECEIVER

• US 3,671,668 A
• Filed: 11/18/1968
• Issued: 06/20/1972
• Est. Priority Date: 11/18/1968
• Status: Expired due to Term

• Current Assignee: Goldstar Electron Co., Ltd. (SK Hynix Inc.)
• Original Assignee: Leonard Reiffel, 62 East Division
• Inventors: Leonard Reiffel, 62 East Division
• Primary Examiner(s): Benedict V. Safourek
• Assistant Examiner(s): Joseph A. Orsino, Jr.
• Application Number:
  US04/776,723
• Time in Patent Office: 1,310 Days
• Field of Search: 35/8,9 315/10 178/DIG.1,6.8,19 340/324A
• US Class Current: 348/552
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G09B 7/08 characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question, supplying further information

Abstract

An electronic audio-visual teaching system employing essentially a cathode ray tube and associated electronic apparatus and a transparent manually operated spatial response signal generator which coacts with the cathode ray tube whereby feedback between students and teaching machine is readily achieved. Provides considerable ease in programming. Also can be used for remote polling of viewers.

Claims

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.

2. The system as defined in claim 1 wherein said image reproduction means is a cathode ray tube.

3. The system as defined in claim 1 wherein the X-, X'"'"''"'"'- and Y'"'"''"'"'-coordinates are recorded at sub-video frequency.

4. The system as defined in claim 1 wherein the means for pre-defining various fixed sets of coordinates include at least one magnetic tape recorder.

5. The system as defined in claim 1 wherein at least one coordinate pair is supplied with additive signals defining a tolerance region around exact spatial coincidence.