Apparatys and method for off-line synchronized capturing and reviewing notes and presentations

• US 20050289453A1
• Filed: 06/21/2005
• Published: 12/29/2005
• Est. Priority Date: 06/21/2004
• Status: Abandoned Application

• Current Assignee: Tegrity, Inc. (McGraw-Hill Education, Inc.)
• Original Assignee: Tegrity, Inc. (McGraw-Hill Education, Inc.)
• Inventors: Feldman, Giora, Biran, Liel, Krikheli, Guy, Segal, Tsakhi
• Application Number:
  US11/158,663
• Publication Number:
  US 20050289453A1
• Time in Patent Office: Days
• US Class Current: 715/203
• CPC Class Codes: G06F 1/12 Synchronisation of different clock signals provided by a plurality of clock generators

Abstract

The application and method disclosed herein teach the capturing of notes in synchronization to a presentation, or any other form of message delivery, that enables a synchronized review between the presentation and notes made thereof. A synchronization between a presenter'"'"'s and a note taker'"'"'s clocks through a time server allows for the off-line note taking using a plurality of note taking devices while maintaining synchronization. Due to this off-line synchronization between a presentation and notes taken thereof it is possible to locate both the note taken at a certain time in the presentation and vice versa, making notes relevant to a portion of the presentation when they were taken.

Claims

1. An apparatus for time synchronization of a presentation delivery system and notes taken by a note-taker, comprising:

means for providing said presentation to at least the note taker;

means for taking of notes of said presentation provided by said presentation delivery system by time-tagging a location of a paper notebook, wherein said time-tagging is relative to a clock associated with said means for taking of notes; and

means for synchronizing a reference clock associated with said presentation delivery system with said clock associated with said means for taking of notes;

wherein said means for taking of notes operates with respect to said clock associated with means for said taking of notes during an interval when note-taking occurs.

2. The apparatus of claim 1, wherein said presentation comprises any of:

audio, video, slides, notes, images, computer applications, pointing position, references to electronically accessible textbooks, articles, Internet resources.

3. The apparatus of claim 1, wherein said means for taking of notes comprises any of:

means for capturing writing strokes, means for capturing audio, and means for capturing video.

4. The apparatus of claim 3, wherein said means for capturing writing strokes further comprises:

a digital pen.

5. The apparatus of claim 4, wherein said paper notebook comprises:

digital paper.

6. The apparatus of claim 1, wherein said means for synchronizing further comprises:

means for calculating a time correction value based on a calculated time offset between said reference clock and said clock of said means for taking of notes; and

means for adjusting time tags of said time tagged data stored in said means for taking of notes, said time tags being adjusted in accordance with said time correction value.

7. The apparatus of claim 6, wherein said time tagged data comprise:

data corresponding to a writing stroke.

8. The apparatus of claim 6, wherein said means for a time correction value further comprise:

means for determining a time drift between said reference clock and said clock of said means for taking of notes.

9. The apparatus of claim 5, further comprising:

means for starting a presentation to appear from a proximate point associated with a selected location on said digital paper.

10. The apparatus of claim 9, further comprising:

means for receiving information from said means for taking of notes respective of one stripe of a plurality of stripes proximate to said selected location; and

,

means for displaying said presentation notes written inside said stripe.

11. A method for synchronizing a note taking device and a presentation delivery system, comprising the steps of:

reading current values of a clock associated with said note taking device and a reference clock associated with said presentation delivery system;

calculating a time correction value based on an offset value between said reference clock and said note taking device clock;

reading data elements from said note taking device; and

adjusting a time tag of each said data element in accordance with said time correction value;

wherein said note taking device operates with respect to said note taking device clock while note taking occurs.

12. The method of claim 11, wherein said step of calculating a time correction value further comprises the step of:

calculating a time drift value between said reference clock and said note taking device clock.

13. The method of claim 12, further comprising the step of:

computing said time-drift value in a linear fashion between two sampling points.

14. The method of claim 12, further comprising the step of:

computing said time-drift value as a non-linear function over a plurality of sampling points.

15. A method for synchronizing a note taking device and a presentation delivery system by use of time stamps, the method comprising the steps of:

obtaining current note taking device time from said note taking device;

obtaining current reference time from said presentation delivery system;

either of obtaining previous note taking device time and the previous reference time, or setting said previous note taking device time and said previous reference time to a predefined value;

correcting each time stamp by a calculated time offset value;

storing said current note taking device time as the previous note taking device time; and

storing said current reference time as the previous reference time.

16. The method of claim 15, further comprising the step of:

correcting each time stamp by a value based on a time drift between the clocks of the note taking device and the presentation delivery system.

17. The method of claim 16, further comprising the step of:

computing said time drift value in a linear fashion between two sampling points.

18. The method of claim 16, further comprising the step of:

computing said time drift value as a non-linear function over a plurality of sampling points.

19. A computer software product for synchronizing a note taking device and a presentation delivery system, the computer software product containing a plurality of computer instructions that comprise a method for executing the steps of:

reading a current value associated with a note taking device clock and a current value of a reference clock associated with said presentation delivery system;

calculating an offset value between said reference clock and said note-taking device clock;

calculating a time correction value based on said time offset value with regard to said reference clock of;

reading data elements from said note taking device; and

adjusting time tags of each data element based on said time correction value;

wherein said note taking device operated with respect to said note taking device clock during an interval in which note taking occurs.

20. The computer software product of claim 19, said method further comprising the step of:

calculating a time drift value between said reference clock and said note-taking device clock.

21. The computer software product of claim 20, said method further comprising the step of:

computing said time drift value in a linear fashion between two sampling points.

22. The computer software product of claim 20, said method further comprising the step of:

computing said time drift value as a non-linear function over a plurality of sampling points.

23. A method for beginning the display of a presentation on a presentation delivery system from a desired point corresponding to a location on a digital paper by a note taking device, the method comprising the steps of:

associating said note taking device with a location on a digital paper;

actuating said note taking device to capture said location;

transferring said location to said presentation delivery system;

correlating said location with a point within said presentation; and

displaying said presentation from said point.

24. The method of claim 23, wherein said location is provided by the step of:

identifying a stripe from a plurality of stripes comprising said digital paper with which said note taking device is associated.

25. The method of claim 24, further comprising the step of:

storing in a memory of said note taking device said stripe location information and a time said note taking device was first used for note-taking.

26. The method of claim 23, further comprising the step of:

correlating actuation of said note taking device relative to said digital paper with a time point.

27. The method of claim 23, wherein the step of said correlating said location with a point comprises at least the step of:

finding the writing stroke stored for said digital paper that is closest to said location.

31. The computer software product of claim 25, further comprising the step of:

correlating actuation of said note taking device relative to a said digital paper with a time point.

32. The computer software product of claim 23, wherein the step of said correlating said location with a point comprises at least the step of:

finding the writing stroke stored for said digital paper that is closest to said location.

28. A computer software product for beginning the display of a presentation on a presentation delivery system from a desired point corresponding to a location on a digital paper by a note taking device, the computer software product containing a plurality of computer instructions that comprise a method for executing the steps of:

associating note taking device with a location on a digital paper;

actuating said note taking device to capture said location;

transferring said location to said presentation system;

correlating said location with a point within said presentation; and

displaying said presentation from said point.

29. The computer software product of claim 28, wherein said location is provided by the step of:

identifying a stripe to which said note-taking device is pointing from a plurality of stripes comprising digital paper.

30. The computer software product of claim 28, further comprising the step of:

storing in a memory of said note taking device said stripe location information and a time said note taking device was first used for note taking.