Programmed presentation system

• US 3,987,484 A
• Filed: 11/05/1973
• Issued: 10/19/1976
• Est. Priority Date: 11/05/1973
• Status: Expired due to Term

• Current Assignee: L-3 Communications Cincinnati Electronics Corporation (L3Harris Technologies, Inc.)
• Original Assignee: L-3 Communications Cincinnati Electronics Corporation (L3Harris Technologies, Inc.)
• Inventors: Munninghoff, Clement W., Bosche, Robert P.
• Primary Examiner(s): Canney, Vincent P.
• Application Number:
  US05/412,963
• Time in Patent Office: 1,079 Days
• Field of Search: 360/72, 360/33, 226/33, 35/24
• US Class Current: 386/343
• 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
• CPC Class Codes: G11B 20/1407 code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
• CPC Class Codes: G11B 27/107 of operating tapes
• CPC Class Codes: G11B 27/322 used signal is digitally coded

Abstract

A system for automatically supplying information to an operator, such as a student being taught to repair a piece of equipment, includes a magnetic tape storage medium having audio and video information storage tracks. A coded data signal track having indicia for locations of the information on the video and audio tracks is provided. An operator station includes keys for entering answer and command signals that control movement of the tape, so that the tape is advanced at a normal speed whereby the audio and video information is presented to the operator at a normal rate, the medium is advanced at a high speed to minimize the time that no meaningful information is presented to the operator, the medium is reversed at high speed, or stopped. Indexing of the tape can be performed by the operator selecting predetermined location indicia or in response to the operator selecting certain commands or answers in response to the audio and video information presented to the operator. For example, the operator can request certain portions of the audio and video information to be repeated or skipped, in which cases the tape is rewound or advanced at high speed to portions of the tape indicated on the tape itself. In response to questions presented to the operator by the audio information and answers given by the operator, branching to different portions of the tape is performed by advancing or rewinding the tape at high speed to areas of the tape designated by the signal track indicia. Supervisory control of the actions taken by the operator is provided to selectively prevent or allow the skipping, repeating, fast forward, rewind, play or indexing operations. Pauses in the presentation of the audio visual information can be selectively inserted by the operator independent from signals from the data track.

Claims

1. A system for automatically supplying information to an operator comprising a dynamic storage medium having at least one information track and a single coded data signal track, said coded data signal track having indicia for locations of the information in the information track, an operator station for deriving command signals for controlling movement of the medium, and means responsive to signals derived from the operator station and from the location indicia of the single coded data signal track for:

(a) advancing the medium at a normal speed in the forward direction whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, said means for advancing and moving including means for reading the single coded data signal track while the medium is advanced at normal speed and moved at high speeds.

2. The system of claim 1 further including a supervisory station for selectively disabling predetermined command signals from the operator station to prevent coupling of the predetermined command signals to the means normally responsive to the command signals.

3. The system of claim 1 wherein the signal track includes a relatively constant frequency carrier while the medium is moving at a substantially constant speed, said carried having three predetermined envelope levels, two of said levels being associated with different binary values, and the third level being associated with clock pulses;

said means responsive to the location indicia including;

playback means responsive to the carrier, said playback means including means for detecting the three amplitude levels of the carrier, means responsive to the detected amplitude levels for deriving signals indicative of the magnitude of the binary data and of the occurrence of the clock pulses to derive a binary signal indicative of the coded data representing the information track location, means for deriving a signal indicative of a speed range for the medium, and means responsive to the speed range indicating signal for controlling response times of the detecting means.

4. The system of claim 3 wherein the detecting means includes means for deriving pulses having predetermined lengths dependent upon the speed of the medium and the frequency of the carrier.

5. A system for automatically supplying information to an operator comprising a dynamic storage medium having at least one information track and a single coded data signal track, said coded data signal track having indicia for locations of the information in the information track, an operator station for deriving command signals for controlling movement of the medium, and means responsive to signals derived from the operator station and from the location indicia of the single coded data signal track for:

(a) advancing the medium at a normal speed in the forward direction whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, the data track including multi-bit binary words having first and second segments, said first segment including a first code indicative of the second segment having a value commensurate with the medium location where the word is located and a second code indicative of the second segment having a value commensurate with a medium location to which the medium is to be driven, means recognizing the first and second codes and responsive to the command signals for activating the means for moving so that the medium is moved at high speed to the location indicated by the second segment of words having the second code.

6. The system of claim 5 further including means responsive to the segments of the words indicating the first and second codes for providing a change in the medium movement in response to the medium reaching or passing the location indicated by the second segment of the word including the second code.

7. The system of claim 6 wherein the means for providing the change includes means for disabling the moving and advancing of the medium.

8. The system of claim 6 wherein the means for providing the change includes means for advancing the medium at the normal speed.

9. The system of claim 5 further including means for activating the moving means to return the medium to substantially the same location as it had prior to the medium being advanced to the location indicated by the second segment of the word including the second code.

10. The system of claim 9 wherein the said means for activating the moving means to return the medium is responsive to a command signal disassociated from said same location.

11. The system of claim 10 wherein said command signal is a clear signal.

12. The system of claim 9 wherein said command signal is a predetermined signal derived by the operator after the medium has been advanced through the information track immediately after the location indicated by the second segment of the word having the second code.

13. The system of claim 5 wherein plural command signals can be selectively coupled to the means for activating, means for deriving an output signal in response to the magnitude of values associated with the command signals being the same as successively detected words having the second code, and the means for activating causes the medium to move at high speed until the output signal is derived.

14. The system of claim 5 wherein the second segment of certain words having the first code includes indicia distinguishable from the locations, and means responsive to the distinguishable indicia and predetermined command signals for activating the moving means so that the medium is moved at high speed to substantially the location of the distinguishable indicia.

15. The system of claim 14 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for advancing at the normal speed, and (b) causing the medium to stop.

16. The system of claim 14 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for moving at high speed, and (b) causing the medium to stop.

17. The system of claim 14 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for advancing at normal speed and moving at high speed, and (b) causing the medium to stop.

18. The system of claim 5 wherein the data track includes command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for advancing at normal speed, and (b) causing the medium to stop.

19. The system of claim 5 wherein the data track includes command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for moving at high speeds, and (b) causing the medium to stop.

20. The system of claim 5 wherein the data track includes command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for advancing at normal speed and moving at high speeds, and (b) causing the medium to stop.

21. The system of claim 5 wherein the data track includes a command code indicative of identifying the beginning of predetermined portions of the information track, and means responsive to said command code and a predetermined command signal for activating the means for moving so the medium moves at high speed to the predetermined portion of the information track indicated by the command code.

22. The system of claim 21 wherein the command signals are provided to repeat and skip certain portions of the information track, and said means for activating includes means for respectively moving the medium at high speeds in the reverse and forward directions in response to detection of the repeat and skip command signals.

23. The system of claim 5 wherein the operator station includes means for deriving numerical command signals indicative of desired locations for the medium, and means responsive to the numerical signals and detected numerical locations from the indicia on the medium for activating the moving means to move the medium at high speed until the medium is at the desired location.

24. The system of claim 23 further including means for deriving an output signal in response to the medium being at the desired location, and means responsive to the output signal for stopping the medium.

25. The system of claim 23 further including means for deriving an output signal in response to the medium being at the desired location, and means responsive to the output signal for activating the means for advancing to move the medium at the normal speed.

26. The system of claim 23 further including means for deriving an output signal in response to the medium being at the desired location, and means responsive to the output signal for selectively, in response to a supervisory control, stopping the medium and for activating the means for advancing to move the medium at the normal speed.

27. A system for automatically supplying information to an operator comprising a dynamic storage medium having at least one information track and a single coded data signal track, said coded data signal track having indicia for locations of the information in the information track, an operator station for deriving command signals for controlling movement of the medium, and means responsive to signals derived from the operator station and from the location indicia of the single coded data signal track for:

(a) advancing the medium at a normal speed in the forward direction whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful inforrmation is presented to the operator, the data track including coded numerical indications for a desired location to which the medium is to be driven, means for detecting the coded numerical indications, and means responsive to a command signal disassociated from the numerical indication for the desired location and the detected coded numerical indication for activating the means for moving so that the medium is moved at high speeds to the desired location.

28. The system of claim 27 further including means for providing a change in the medium movement in response to the medium reaching or passing the desired location.

29. The system of claim 28 wherein the means for providing the change includes means for disabling the high speed moving and normal speed advancing of the medium.

30. The system of claim 28 wherein the means for providing the change includes means for advancing the medium at the normal speed.

31. The system of claim 27 further including means for activating the moving means to return the medium at high speeds to substantially the same location as it had prior to the medium being advanced to the desired location.

32. The system of claim 31 wherein the said means for activating the moving means to return the medium at high speeds is responsive to a command signal disassociated with said same location.

33. The system of claim 32 wherein said command signal is a clear signal.

34. The system of claim 31 wherein said command signal is a predetermined signal derived by the operator after the medium has been advanced through the information on the medium occurring immediately after the desired location.

35. A system for automatically supplying information to an operator comprising a dynamic storage medium having information and coded data signals recorded thereon, said coded data signals having indicia for locations of the information, an operator station for deriving command signals for controlling movement of the medium, and means responsive to signals derived from the operator station and from the location indicia for:

(a) advancing the medium in the forward direction at a normal speed whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, said data signal including a command code for identifying the beginning of predetermined portions of the information on the medium, means for detecting the command code, and means responsive to the detected command code and a predetermined command signal for activating the means for moving so the medium moves at high speeds to the portion of the information track indicated by the detected command code.

36. The system of claim 35 wherein command signals are provided to repeat and skip certain portions of the information, and said means for activating includes means for respectively moving the medium at high speeds in the reverse and forward directions in response to detection of the repeat and skip command signals.

37. The system of claim 35 wherein the signal track includes a relatively constant frequency carrier while the medium is moving at a substantially constant speed, said carried having three predetermined envelope levels, two of said levels being associated with different binary values, and the third level being associated with clock pulses, said means responsive to the location indicia including:

playback means responsive to the carrier, said playback means including means for detecting the three amplitude levels of the carrier, means responsive to the detected amplitude levels for deriving signals indicative of the magnitude of the binary data and of the occurrence of the clock pulses to derive a binary signal indicative of the coded data representing the information track location, means for deriving a signal indicative of a speed range for the medium, and means responsive to the speed range indicating signal for controlling response times of the detecting means.

38. A system for automatically supplying information to an operator comprising a dynamic storage medium having information and coded data signals recorded thereon, said coded data signals having indicia for locations of the information, an operator station for deriving command signals for controlling movement of the medium, means responsive to signals derived from the operator station and from the location indicia for:

(a) advancing the medium in the forward direction at a normal speed whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, the operator station including means for deriving numerical signals indicative of desired locations for the medium, means responsive to the numerical signals and detected numerical locations from the indicia on the medium for activating the moving means so the medium is moved at high speeds until the medium is at the desired location, means for deriving an output signal in response to the medium being at the desired location, and means responsive to the output signal for selectively, in response to a supervisory control, stopping the medium and for activating the means for advancing.

39. The system of claim 38 wherein the signal track includes a relatively constant frequency carrier while the medium is moving at a substantially constant speed, said carrier having three predetermined envelope levels, two of said levels being associated with different binary values, and the third level being associated with clock pulses, said means responsive to the location indicia including:

playback means responsive to the carrier, said playback means including means for detecting the three amplitude levels of the carrier, means responsive to the detected amplitude levels for deriving signals indicative of the magnitude of the binary data and of the occurrence of the clock pulses to derive a binary signal indicative of the coded data representing the information track location, means for deriving a signal indicative of a speed range for the medium, and means responsive to the speed range indicating signal for controlling response times of the detecting means.

40. The system of claim 38 wherein said means for advancing and moving incluldes means for reading the coded data signal while the medium is advanced at normal speed and moved at high speeds.

41. A system for automatically supplying information to an operator comprising a dynamic storage medium having information and coded data signals recorded thereon, said coded data signals having indicia for locations of the information, an operator station for deriving command signals for controlling movement of the medium, means responsive to signals derived from the operator station and from the location indicia for:

(a) advancing the medium in the forward direction at a normal speed whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, said data indicia including coded numerical indications for a desired location to which the medium is to be driven, means for detecting the coded numerical indications, and means responsive to a command signal disassociated from the numerical indication for the desired location and the detected coded numerical indications for activating the means for moving so that the medium is moved at high speeds to the desired location indicated by the detected indication.

42. The system of claim 41 further including means for providing a change in the medium movement in response to the medium reaching or passing the desired location.

43. The system of claim 41 wherein the signal track includes a relatively constant frequency carrier while the medium is moving at a substantially constant speed, said carrier having three predetermined envelope levels, two of said levels being associated with different binary values, and the third level being associated with clock pulses, said means responsive to the location indicia including:

playback means responsive to the carrier, said playback means including means for detecting the three amplitude levels of the carrier, means responsive to the detected amplitude levels for deriving signals indicative of the magnitude of the binary data and of the occurrence of the clock pulses to derive a binary signal indicative of the coded data representing the information track location, means for deriving a signal indicative of a speed range for the medium, and means responsive to the speed range indicating signal for controlling response times of the detecting means.

44. The system of claim 41 wherein said means for advancing and moving includes means for reading the coded data signal while the medium is advanced at normal speed and moved at high speeds.

45. An audio-visual presentation system comprising a magnetic tape having diagonal video tracks thereon and an audio track extending longitudinally of the tape, said audio track having recorded thereon a single serial coded signal having indicia for locations of the video tracks, an operator station for deriving command signals for controlling longitudinal movement of the tape, means responsive to signals derived from the operator station and from the location indicia for:

(a) longitudinally advancing the tape in the forward direction at a normal speed, and (b) moving the tape in the forward and reverse directions at high speeds, said means for advancing and moving including means for reading the single coded signal while the tape is advanced at normal speed and moved at high speeds, and means responsive to the video tracks and the tape being driven at the normal speed for deriving a video output signal susceptible to activate a television receiver.

46. The system of claim 45 wherein the coded signal audio track includes a relatively constant frequency audio carrier while the tape is moving at a substantially constant speed, said carrier having three predetermined envelope levels, two of said levels being associated with different binary values, and the third level being associated with clock pulses, said means responsive to the location indicia including:

playback means responsive to the audio carrier, said playback means including means for detecting the three amplitude levels of the carrier, means responsive to the detected amplitude levels for deriving signals indicative of the magnitude of the binary data and of the occurrence of the clock pulses to derive a binary signal indicative of the coded data representing the information track location, means for deriving a signal indicative of a speed range for the tape, and means responsive to the speed range indicating signal for controlling response times of the detecting means.

47. A system for automatically supplying information to an operator comprising a dynamic storage medium having at least one information track and a single coded data signal track, said coded data signal track having indicia for locations of the information in the information track, means for deriving command signals for controlling movement of the medium, and means responsive to the command signals and the location indicia of the single coded data signal track for:

(a) advancing the medium at a normal speed in the forward direction whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, said means for advancing and moving including means for reading the single coded data signal track while the medium is advanced at normal speed and moved at high speeds.

48. A system for automatically supplying information to an operator comprising a dynamic storage medium having recorded thereon information and coded data signals, said coded data signals having indicia for locations of the information recorded on the medium, means for deriving command signals for controlling movement of the medium, means responsive to the command signals and thee location indicia recorded on the medium for:

(a) advancing the medium at a normal speed in the forward direction whereby the information is presented to the operator at a normal rate, and (b) moving the medium in the forward and reverse directions at high speeds such that no meaningful information is presented to the operator, said means for advancing and moving including means for reading the coded indicia while the medium is advanced at normal speed and moved at high speeds.

49. The system of claim 48 wherein the recorded coded data signal includes multi-bit binary words having first and second segments, said first segment including a first code indicative of the second code having a value commensurate with the medium location where the word is located and a second code indicative of the second segment having a value commensurate with a medium location to which the medium is to be driven, means recognizing the first and second codes and responsive to the command signals for activating the means for moving so that the medium is moved at high speed to the location indicated by the second segment of words having the second code.

50. The system of claim 49 further including means responsive to the segments of the words indicating the first and second codes for providing a change in the medium movement in response to the medium reaching or passing the location indicated by the second segment of the word including the second code.

51. The system of claim 49 further including means for activating the moving means to return the medium to substantially the same location as it had prior to the medium being advanced to the location indicated by the second segment of the word including the second code.

52. The system of claim 51 wherein the means for deriving the command signals includes an operator station, and wherein the means for activating the moving means to return the medium is responsive to a command signal disassociated from said same location.

53. The system of claim 52 wherein said command signal is a clear signal.

54. The system of claim 51 wherein said means for deriving command signals includes an operator station, and wherein said command signal is a predetermined signal derived from the operator station after the medium has been advanced through the information track immediately after the information indicated by the second segment of the word having the second code.

55. The system of claim 49 wherein said means for deriving command signals includes an operator station and plural command signals can be selectively coupled to the means for activating, means for deriving an output signal in response to the magnitude of values associated with a command signal being the same as successively detected words having the second code, and the means for activating causes the medium to move at high speed until the output signal is derived.

56. The system of claim 49 wherein the second segment of certain words having the first code includes indicia distinguishable from the locations, and means responsive to the distinguishable indicia and predetermined command signals for activating the moving means so that the medium is moved at high speed to substantially the location of the distinguishable indicia.

57. The system of claim 56 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for advancing at the normal speed, and (b) causing the medium to stop.

58. The system of claim 56 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium, for (a) deactivating the means for moving at high speed, and (b) causing the medium to stop.

59. The system of claim 56 wherein the distinguishable indicia include command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for advancing at normal speed and moving at high speed, and (b) causing the medium to stop.

60. The system of claim 48 wherein the recorded data signal includes command codes indicative of changing the motion of the medium, and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for advancing at normal speed, and (b) causing the medium to stop.

61. The system of claim 48 wherein the recorded data signal includes command codes indicative of changing the motion of the medium and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for moving at high speeds, and (b) causing the medium to stop.

62. The system of claim 48 wherein the recorded data signal includes command codes indicative of changing the motion of the medium and means responsive to detection of a command code indicative of changing the motion of the medium for (a) deactivating the means for advancing at normal speed and moving at high speeds, and (b) causing the medium to stop.

63. The system of claim 48 wherein the recorded data signal includes a command code indicative of identifying the beginning of predetermined portions of the recorded information signal, and means responsive to said command code and a predetermined command signal for activating the means for moving so the medium moves at high speed to the predetermined portion of the recorded information signal indicated by the command code.

64. The system of claim 63 wherein the means for deriving command signals includes an operator station, the command signals derived from the operator station being indicative of repeating and skipping certain portions of the recorded information signal, and said means for activating includes means for respectively moving the medium at high speeds in the reverse and forward directions in response to detection of the repeat and skip command signals.

65. The system of claim 48 wherein the recorded coded data signal includes coded numerical indications for a desired location to which the medium is to be driven, and means responsive to a command signal disassociated from the numerical indication for the desired location and one of the coded numerical indications being detected for activating the means for moving so that the medium is moved at high speeds to the desired location.

66. The system of claim 65 further including means for activating the moving means to return the medium at high speeds to substantially the same location as it had prior to the medium being advanced to the desired location.

67. The system of claim 66 wherein said means for activating the moving means to return the medium at high speeds is responsive to a command signal disassociated from said same location.

68. The system of claim 67 wherein the means for deriving the command signal includes an operator station, said operator station including means for deriving a clear signal.

69. The system of claim 66 wherein the means for deriving the command signal includes an operator station, said operator station including means for deriving a predetermined signal after the medium has been advanced through the information on the medium occurring immediately after the desired location.