Method and device for producing a substantially continuous composite video signal

• US 5,023,727 A
• Filed: 10/12/1989
• Issued: 06/11/1991
• Est. Priority Date: 10/12/1989
• Status: Expired due to Term

• Current Assignee: Ian A.R. Boyd
• Original Assignee: Ian A.R. Boyd
• Inventors: Boyd, Ian A. R., Schaeffer, George A., Rose, William J.
• Primary Examiner(s): RICHARDSON, ROBERT
• Application Number:
  US07/420,827
• Time in Patent Office: 607 Days
• Field of Search: 358/141-147, 358/310, 358/335, 358/185, 360/10.1, 360/10.2, 360/10.3, 360/72.1, 360/72.2
• US Class Current: 386/338
• CPC Class Codes: G09B 5/065 Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
• CPC Class Codes: G11B 15/005 Programmed access in sequence to indexed parts of tracks of operating tapes, by driving or guiding the tape access by driving of both record carrier and head G11B15/1816; see prov. also G11B15/602
• CPC Class Codes: G11B 15/023 remotely controlled
• CPC Class Codes: G11B 19/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/102 Programmed access in sequence to addressed parts of tracks of operating record carriers access by moving the head G11B3/08, G11B5/54, G11B7/085, G11B21/022; by moving the record carrier G11B15/005, G11B17/005, by driving of both record carrier and head G11B15/1816
• CPC Class Codes: G11B 27/3054 Vertical Interval Time code [VITC]
• CPC Class Codes: G11B 27/328 on a tape [TTOC]
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus

Abstract

This invention relates to methods for forming a substantially continuous composite video signal. A method for forming a composite signal comprises providing a video signal preprogrammed with data, reading or decoding and storing the data, determining where to combine a video field assembled from the data with the video signal, and combining the video field with the video signal by switching between the two. A method for forming a substantially continuous video signal comprises providing a video signal preprogrammed with data, reading or decoding and storing the data, receiving input indicating a desired video signal segment, determining the gap before locating the desired video signal segment, and filling the gap with a video segment assembled from the data. In another aspect, this invention also relates to a device for carrying out the methods of the invention.

Claims

1. A method of combining RGB fields with a video signal to form a composite video signal comprising:

providing a video signal preprogrammed in the video portion thereof with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for assembling the RGB fields, and

an index of which RGB field to combine with which fields in the video signal;

reading the listing of what portion of the video signal includes the data;

decoding the data into the information for assembling the RGB fields and the index of which RGB field to combine with which fields in the video signal;

storing the decoded data;

reading a field count of a current field of the video signal;

comparing the field count of the current field with the index of fields in the video signal to be combined with the RGB fields;

whenever the current field count matches a field in the index, assembling the corresponding RGB field in the index from the information for assembling RGB fields; and

combining the RGB field with the current field of the video signal by switching between the fields according to the information for assembling the RGB fields to form a composite video signal.

2. The method of claim 1 wherein the video signal is preprogrammed in the active video portion thereof with the data.

3. The method of claim 1 including:

comparing the field count of the current field of the composite video signal with the index of fields in the video signal to be combined with the RGB fields; and

whenever the current field count of the composite video signal no longer matches a field in the index, stopping the combining of the RGB field with the current field of the video signal by switching to the video signal alone.

4. The method of claim 1 including receiving user input indicating which RGB fields to combine with which fields in the video signal.

5. The method of claim 4 wherein user input indicating which RGB field to combine with which field in the video signal takes precedence over the index of which RGB field to combine with which fields in the video signal.

6. The method of claim 4 including receiving further user input indicating when to stop combining the RGB field with the current field of the video signal.

7. A method of combining RGB fields with a video signal to form a substantially continuous video signal comprising:

providing a video signal preprogrammed in the video portion thereof with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for assembling the RGB segments, and

a directory of field counts in the video signal which define the beginning field of user selectable video signal segments;

reading the listing of what portion of the video signal includes the data;

decoding the remaining data into the information for assembling the RGB segments and the directory of field counts in the video signal which define the beginning field of user selectable video signal segments;

storing the decoded data;

receiving user input indicating a desired user selectable video signal segment;

reading the field count of the current field of the video signal;

comparing the field count of the current field with the field count from the directory of the beginning field of the desired user selectable video signal segment to determine the number of fields in the gap between the current field and the beginning field of the desired user selectable video signal segment;

assembling the RGB segment necessary to fill the gap from the information for assembling RGB fields; and

filling the gap with the assembled RGB segment to form a substantially continuous video signal.

8. The method of claim 7 wherein the video signal is preprogrammed in the active video portion thereof with the data.

9. The method of claim 7 wherein the information for assembling the RGB segments includes tags indicating the length in fields of each RGB segment, and wherein storing comprises storing the information for assembling the RGB fields in each of the RGB segments along with the length tag therefor.

10. The method of claim 9 including, between comparing and assembling, selecting the RGB segment having the shortest length longer than the gap to be filled.

11. The method of claim 9 including, between comparing and assembling, selecting a combined RGB segment having a length longer than the gap by summing the lengths of two or more RGB segments.

12. The method of claim 9 wherein filling comprises filling the gap with successive RGB segments to form a substantially continuous video signal.

13. The method of claim 7 including:

receiving user input indicating which RGB fields to overlay onto which fields in the video signal,

assembling the user indicated RGB fields from the information for assembling RGB fields, and

overlaying the user indicated fields in the video signal with the user indicated RGB fields by switching between the fields to form a composite video signal.

14. The method of claim 7 including locating the beginning field of the desired user selectable video signal segment by controlling a video storage device compatible with the video storage medium to locate the beginning field of the desired user selectable video signal segment.

15. The method of claim 14 wherein controlling comprises:

learning the infra-red search and play commands of the video storage device;

determining the search speed of the video storage device;

calculating the time duration of the gap from the number of fields in the gap and the search speed of the video storage device;

transmitting the infra-red search command to the video storage device; and

after the time duration of the gap, transmitting the infra-red play command to the video storage device.

16. The method of claim 15 wherein the video storage device is a video tape recorder, and wherein the video storage medium is video tape.

17. The method of claim 16 wherein the video tape is of approximately 30 minute duration.

18. The method of claim 17 wherein the RGB segments range in time duration from between about 10 seconds to about 60 seconds.

19. The method of claim 15 wherein determining the search speed of the video storage device comprises:

transmitting the infra-red play command to the video storage device;

reading an initial field count from the current field of the video signal;

transmitting the infra-red search command to the video storage device;

after a predetermined period of time, transmitting the infra-red play command to the video storage device;

reading a final field count from the current field of the video signal; and

calculating the search speed from playing an initial field of the video signal to playing a final field of the video signal.

20. A method of combining non-phase-modulated fields and digital audio with a video signal to form a composite video signal comprising:

providing a video signal preprogrammed in the video portion thereof with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for generating digital audio programs,

information for assembling the non-phase-modulated fields,

a first index of which non-phase-modulated fields to combine with which fields in the video signal, and

a second index of which digital audio programs to combine with which fields in the video signal;

reading the listing of what portion of the video signal includes the data;

reading the remaining data from the listed portions of each field of the video signal;

decoding the remaining data into the information for assembling the non-phase-modulated fields, the information for generating the digital audio program and the indexes of which non-phase-modulated fields and which digital audio programs to combine with which fields in the video signal;

storing the decoded data;

reading a field count of a current field of the video signal;

comparing the field count of the current field with the indexes of fields in the video signal to be combined with non-phase-modulated fields and digital audio programs;

whenever the current field count matches a field in the first index, recovering the corresponding information for assembling non-phase-modulated fields, assembling the corresponding non-phase-modulated field, and overlaying the current field of the video signal with the assembled non-phase-modulated field by switching between the fields on a pixel by pixel basis according to the information for assembling the non-phase-modulated fields to form a composite video signal; and

whenever the current field count matches a field in the second index, recovering the corresponding information for generating digital audio programs, generating the corresponding digital audio program, and adding the digital audio program to the audio portion of the video signal to form a composite video signal.

21. The method of claim 20 wherein the video signal is preprogrammed in the active video portion thereof with the data.

22. The method of claim 20 including:

comparing the field count of the current field of the composite video signal with the index of fields in the video signal to be combined with the non-phase-modulated fields; and

whenever the current field count of the composite video signal no longer matches a field in the index, stopping the combining of the non-phase-modulated field with the current field of the video signal by switching video output to the video signal alone.

23. The method of claim 20 including:

comparing the field count of the current field of the composite video signal with the second index of fields in the video signal to be combined with the digital audio programs; and

whenever the current field count of the composite video signal no longer matches a field in the second index, stopping the combining of the digital audio program with the audio portion of the current field of the video signal by switching audio output to the audio portion of the video signal alone.

24. The method of claim 20 including receiving user input indicating which non-phase-modulated fields to combine with which fields in the video signal.

25. The method of claim 24 wherein the user input indicating which non-phase-modulated field to combine with which field in the video signal takes precedence over the index of which non-phase-modulated fields to combine with which fields in the video signal.

26. The method of claim 24 including receiving further user input indicating when to stop combining the non-phase-modulated fields with the current fields of the video signal.

27. The method of claim 20 including receiving additional user input indicating which digital audio programs to combine with the audio portion of which fields in the video signal.

28. The method of claim 27 wherein the additional user input indicating which digital audio program to combine with the audio portion of which field in the video signal takes precedence over the second index of which digital audio programs to combine with the audio portion of which fields in the video signal.

29. The method of claim 27 including receiving further additional user input indicating when to stop combining the digital audio programs with the audio portion of the current fields of the video signal.

30. A method of combining non-phase-modulated fields and digital audio with a video signal to form a substantially continuous video signal comprising:

providing a video signal preprogrammed with user selectable video signal segments and with data, the data comprising

a field count in every field of the video signal, and

a data segment comprising information for generating digital audio programs, information for assembling non-phase-modulated segments, a directory of field counts in the video signal which define the beginning field of each of the user selectable video signal segments, and

an index of which digital audio program corresponds with which non-phase-modulated segment;

reading the data in the data segment;

decoding the data into the information for assembling the non-phase-modulated segment, the information for generating the digital audio programs, and the directory of field counts in the video signal which define the beginning field of each of the user selectable video signal segments;

storing the decoded data;

receiving user input indicating a desired user selectable video signal segment;

reading the field count of the current field of the video signal;

comparing the field count of the current field with the field count from the directory of the beginning field of the desired user selectable video signal segment to determine the number of fields in the gap between the current field and the beginning field of the desired user selectable video signal segment;

locating the first field of the desired user selectable video signal segment from the directory of field counts;

assembling the non-phase-modulated segment necessary to fill the gap by recovering the information for assembling non-phase-modulated segments;

generating the corresponding digital audio program from the index of which digital audio program corresponds with which non-phase-modulated segment to accompany the assembled non-phase-modulated segment by recovering the information for generating digital audio programs; and

filling the gap with the assembled non-phase-modulated segment and corresponding digital audio program to form a substantially continuous video signal.

31. The method of claim 30 wherein the video signal is preprogrammed in the active video portion thereof with the data.

32. The method of claim 30 wherein the information for assembling the non-phase-modulated segments includes tags indicating the length in fields of each non-phase-modulated segment, and wherein storing comprises storing the information for assembling the non-phase-modulated fields in each of the non-phase-modulated segments along with the length tag therefor.

33. The method of claim 32 including, between comparing and assembling, selecting the non-phase-modulated segment having the shortest length longer than the gap to be filled.

34. The method of claim 32 including, between comparing and assembling, selecting a combined non-phase-modulated segment having a length longer than the gap by summing the lengths of two or more non-phase-modulated segments.

35. The method of claim 34 wherein filling comprises filling the gap with successive non-phase-modulated segments to form a substantially continuous video signal.

36. The method of claim 30 including:

receiving user input indicating which non-phase-modulated fields to overlay onto which fields in the video signal,

assembling the user indicated non-phase-modulated fields from the information for assembling non-phase-modulated fields, and

overlaying the user indicated fields in the video signal with the user indicated non-phase-modulated fields by switching between the fields to form a composite video signal.

37. The method of claim 30 wherein the video signal is provided from a video storage medium, and wherein locating comprises controlling a video storage device compatible with the video storage medium to locate the inning field of the desired user selectable video signal segment.

38. The method of claim 37 wherein controlling comprises:

learning the infra-red search and play commands of the video storage device;

determining the search speed of the video storage device;

calculating the time duration of the gap from the number of fields in the gap and the search speed of the video storage device;

transmitting the infra-red search command to the video storage device; and

after the time duration of the gap, transmitting the infra-red play command to the video storage device.

39. The method of claim 38 wherein the video storage device is a video tape recorder, and wherein the video storage medium is video tape.

40. The method of claim 39 wherein the video tape is of approximately 30 minute duration.

41. The method of claim 38 wherein determining the search speed of the video storage device comprises:

transmitting the infra-red play command to the video storage device;

reading an initial field count from the current field of the video signal;

transmitting the infra-red search command to the video storage device;

after a predetermined period of time, transmitting the infra-red play command to the video storage device;

reading a final field count from the current field of the video signal; and

calculating the search speed from playing an initial field of the video signal to playing a final field of the video signal.

42. A method of combining RGB fields with a video signal to form a substantially continuous composite video signal comprising:

providing a video signal preprogrammed in the video portion thereof with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for assembling the RGB fields,

a directory of field counts in the video signal which define the beginning field of user selectable video signal segments, and

an index of which RGB fields to combine with which fields in the video signal;

reading the listing of what portion of the video signal includes the data;

decoding the data into the information for assembling the RGB fields, the directory of field counts in the video signal which define the beginning field of user selectable video signal segments, and the index of which RGB fields to combine with which fields in the video signal;

storing the decoded data;

receiving user input indicating a desired user selectable signal segment;

reading the field count of the current field of the video signal;

comparing the field count of the current field with the field count from the directory of the beginning field of the desired user selectable video signal segment to determine the time necessary to locate the desired user selectable video signal segment;

assembling any RGB fields necessary to fill the locating time from the information for assembling RGB fields;

locating the desired user selectable video signal segment;

filling the locating time with the assembled RGB fields to form a substantially continuous video signal;

whenever the current field count matches a field in the index, assembling the corresponding RGB field in the directory from the information for assembling RGB fields; and

combining the RGB field with the current field of the video signal by switching between the fields according to the information for assembling the RGB fields to form a substantially continuous composite video signal.

43. The method of claim 42 wherein the video signal is preprogrammed in the active video portion thereof with the data.

44. The method of claim 42 including receiving additional user input indicating which RGB fields to combine with which fields in the video signal.

45. The method of claim 44 wherein the additional user input indicating which RGB fields to combine with which fields in the video signal takes precedence over the index of which RGB fields to combine with which fields in the video signal.

46. The method of claim 44 including receiving further user input indicating when to stop combining the RGB field with the current field of the video signal.

47. The method of claim 42 wherein the information for assembling the RGB segments includes tags indicating the length in fields of each RGB segment, and wherein storing comprises storing the information for assembling the RGB fields in each of the RGB segments along with the length tag therefor.

48. The method of claim 47 wherein the RGB segments range in time duration from between about 10 seconds to about 60 seconds.

49. The method of claim 42 wherein the video signal is provided from a video storage medium, and wherein locating comprises controlling a video storage device compatible with the video storage medium to locate the beginning field of the desired user selectable video signal segment.

50. The method of claim 49 wherein the video storage device is a video tape recorder, and wherein the video storage medium is video tape.

51. The method of claim 50 wherein the video tape is of approximately 30 minute duration.

52. A device for combining RGB fields with a video signal to form a substantially continuous video signal comprising:

a video signal preprogrammed with user selectable video segments and with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for assembling RGB segments, and

a directory of field counts in the video signal which define the beginning field of the user selectable video segments;

a video storage medium having the preprogrammed video signal stored thereon;

means for reading the video signal from the video storage medium;

means for decoding the data;

means for receiving user input indicating a desired user selectable video segment;

means for locating the beginning field of the desired user selectable video segment;

a microprocessor for comparing a field count of the current field with the field count of the beginning field of the desired user selectable video segment to determine the time necessary to locate the desired user selectable video segment, the microprocessor for actuating the locating means to locate the desired user selectable video segment; and

a video processor for assembling the RGB segment necessary to fill the locating time from the information for assembling RGB segments to form a substantially continuous video signal.

53. The device of claim 52 wherein the video signal is preprogrammed in the video portion thereof with the data.

54. The device of claim 53 wherein the video signal is preprogrammed in the active video portion thereof with the data.

55. The device of claim 52 wherein the video storage medium is a video tape and wherein the reading means is a video tape recorder.

56. The device of claim 52 wherein the information for assembling RGB segments includes tags indicating the time duration of each RGB segment.

57. The device of claim 56 comprising means for storing the information for assembling RGB segments along with the corresponding time duration tags.

58. The device of claim 52 wherein the data comprises information for generating digital audio programs, and comprising a microcontroller for generating the corresponding digital audio program to accompany the assembled RGB segment from the information for generating digital audio programs.

59. The device of claim 52 comprising means for seamlessly switching from the RGB segment to the desired user selectable video segment once it is located.

60. A device for combining RGB fields with a video signal to form a composite video signal comprising:

a video signal preprogrammed with data, the data comprising

a listing of what portion of the video signal includes the data,

a field count in every field of the video signal,

information for assembling the RGB fields, and

an index of which RGB fields to combine with which fields in the video signal;

means for reading the data from the video signal;

means for storing the data;

a microprocessor for comparing a field count of current field with the index of fields in the video signal to be combined with RGB fields;

a video processor for assembling the corresponding RGB field in the index from the information for assembling RGB fields; and

a switch for combining the RGB field with the current field of the video signal on a pixel-by-pixel basis according to the information for assembling the RGB fields to form a composite video signal.

61. The device of claim 60 wherein the video signal is preprogrammed in the video portion thereof with the data.

62. The device of claim 61 wherein the video signal is preprogrammed in the active video portion thereof with the data.

63. The device of claim 60 comprising a video storage medium having the preprogrammed video signal stored thereon, and wherein the reading means comprises a video storage device compatible with the video storage medium, and means for decoding the data into the listing, the field count, the information for assembling the RGB fields, and the index.

64. The device of claim 60 comprising means for receiving user input indicating which RGB fields to combine with which fields in the video signal.

65. The device of claim 60 wherein the user input takes precedence over the index.

66. The device of claim 60 wherein the data comprises information for generating digital audio programs and a second index of which digital audio programs to combine with which fields in the video signal, and wherein the microprocessor also compares the field count of the current field with fields in the second index to be combined with digital audio programs, and comprising a microcontroller for generating the corresponding digital audio programs in the second index from the information for generating digital audio programs, and comprising means for adding the generated digital audio programs to the audio portion of the video signal.

67. A device for combining non-phase-modulated fields with a video signal preprogrammed in the active video portion thereof with a data segment and with a field header in every field thereof;

the data segment having items comprising information for assembling non-phase-modulated fields, tags indicating a length in fields of non-phase-modulated segments, a directory of field counts in the video signal which define the beginning field of video signal segments, and a script defining a default order in which non-phase-modulated segments and video signal segments are combined together to form a substantially continuous video signal;

the field header having a field count and having prompts as to which non-phase-modulated fields to combine with which fields in the video signal segment to form a substantially continuous composite video signal comprising;

means for reading the data segment and the field header from the video signal;

means for storing the items in the data segment;

means for receiving user input indicating a desired non-phase-modulated segment or a desired video signal segment;

means for locating the beginning field of the video signal segments;

a video processor for assembling non-phase-modulated segments and non-phase-modulated fields from the information for assembling non-phase-modulated fields;

means for switching between non-phase-modulated segments and video signal segments to form a substantially continuous video signal, the switching means also for switching between an non-phase-modulated field and a video signal segment field on a pixel-by-pixel basis according to the information for assembling non-phase-modulated fields to form a composite video signal;

a microprocessor responsive to the tags, the current field count and the directory for selecting an non-phase-modulated segment of sufficient length to fill a gap between a current field count and the beginning field count of a desired video signal segment or a script defined video signal segment, and for controlling the video processor to assemble the non-phase-modulated segment and for controlling the switching means to fill the gap;

the microprocessor also responsive to user input and in the absence of user input the script for controlling the switching means to sequentially combine non-phase-modulated segments and video signal segments to form a substantially continuous video signal, and for controlling the locating means to locate the beginning field of video signal segments desired by a user or defined by the script; and

the microprocessor also responsive to the current field count and the prompts for controlling the video processor to assemble the non-phase-modulated field, and for controlling the switching means to simultaneously combine the non-phase-modulated field with the current field of the video signal.

68. The device of claim 67 comprising a video storage medium having the preprogrammed video signal stored thereon, and wherein the reading means comprises a video storage device compatible with the video storage medium and means for decoding the data segment into the items and means for decoding the field header into the field count and the prompts.

69. The device of claim 68 wherein the video storage medium comprises a video tape, and wherein the video storage device comprises a video tape recorder.

70. The device of claim 69 wherein the video tape comprises video tape of about 30 minute duration.

71. The device of claim 70 wherein the non-phase-modulated segments have lengths corresponding to time durations ranging from between abut 10 seconds to about 60 seconds.

72. The device of claim 71 wherein the storing means comprises storing the information for assembling the non-phase-modulated fields in non-phase-modulated segments along with the tags indicating the length of the non-phase-modulated segments.

73. The device of claim 67 comprising second means for receiving user input indicating which non-phase-modulated fields to combine with which fields in the video signal segment on a pixel-by-pixel basis.

74. The device of claim 73 wherein the microprocessor is responsive to the second user input and in the absence of second user input the prompts for controlling the video processor to assemble the non-phase-modulated field.

75. The device of claim 67 wherein the data segment items comprise information for generating digital audio programs, and an index of which digital audio program corresponds to which non-phase-modulated segment, and wherein the field header comprises second prompts as to which digital audio programs to combine with which field in the video signal segment, and comprising a microcontroller for generating digital audio programs from the information for generating digital audio programs, and comprising means for adding the generated digital audio programs to the audio portion of the video signal, and wherein the microprocessor is also responsive to the index for selecting the corresponding digital audio programs to accompany the non-phase-modulated segments selected to fill the gap, and for controlling the microcontroller to generate the digital audio programs, and wherein the microprocessor is also responsive to the second prompts for controlling the microcontroller to generate the digital audio programs, and for controlling the adding means to add the generated digital audio programs to the audio portion of the video signal.

76. The device of claim 75 comprising third means for receiving user input indicating which digital audio programs to add to which fields in the video signal, and wherein the microprocessor is responsive to the third user input and in the absence of third user input the second prompts for controlling the microcontroller to generate the digital audio program, and for controlling the adding means to add the generated digital audio program to the audio portion of the video signal.