US5249052A
Expired / Lapsed
US
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Image display system with compressed video signal recording and display
Assignee: Canon Inc
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Filing: 1992-11-18
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Granted: 1993-09-28
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Expires: 2012-11-18
Abstract
Abstract A system comprises a video camera for producing one field portion of a video signal in a second predetermined period during a first predetermined period which is longer than the second predetermined period, a recorder for recording the one field portion of the video signal from the video camera in the second predetermined period during the first predetermined period and a display device arranged to make a vertical scanning from the upper to the lower side of an effective display surface in the second predetermined period during the first predetermined period for displaying an image related to the video signal produced from the video camera.
Inventors
- 👤 Katsuji Yoshimura
- 👤 Masahide Hasegawa
- 👤 Kenichi Nagasawa
- 👤 Koji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/83; H04N9/835; H04N9/8355; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
142 words
An image display system comprising: (a) a video camera for producing one field portion of a particular video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period, a horizontal synchronizing period of the particular video signal being shorter than that of a normal video signal; (b) a video recorder for recording the particular video signal produced from said camera on a recording medium; and (c) a display device having an effective display surface for displaying an image and arranged to display an image related to the particular video signal produced from said video camera, said display device being arranged to make a vertical scanning from the upper end to the lower end of said effective display surface in said second predetermined time period during said first predetermined time period.
Claim 2
Dependent Claim
142 words
An image display system comprising: (a) a video camera for producing one field portion of a particular video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period, a horizontal synchronizing period of the particular video signal being shorter than that of a normal video signal; (b) a video recorder for recording the particular video signal produced from said camera on a recording medium; and (c) a display device having an effective display surface for displaying an image and arranged to display an image related to the particular video signal produced from said video camera, said display device being arranged to make a vertical scanning from the upper end to the lower end of said effective display surface in said second predetermined time period during said first predetermined time period.
Claim 3
Dependent Claim
50 words
A system according to claim 1, wherein said recorder is arranged to record the particular video signal produced from said video camera on the recording medium so that one field portion of the particular video signal is recorded in said second predetermined time period during said first predetermined time period.
Claim 4
Dependent Claim
45 words
A system according to claim 2 wherein said recorder is arranged to record an audio signal on said recording medium so that an audio signal corresponding to said first predetermined time period is recorded in said second predetermined time period by compressing an audio signal.
Claim 5
Dependent Claim
39 words
A system according to claim 2, wherein said recorder includes reproducing means for reproducing the one field portion of the particular video signal from said recording medium in said second predetermined time period during said first predetermined time period.
Claim 6
Dependent Claim
36 words
A system according to claim 4, further comprising: switching means for selectively supplying the particular video signal produced from said video camera and the particular video signal reproduced by said reproducing means to said display device.
Claim 7
Dependent Claim
127 words
An image display system comprising: (a) a reproducing device for reproducing one field portion of a particular video signal from a recording medium in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period, a horizontal synchronizing period of the particular video signal being shorter than that of a normal video signal; and (b) a display device having an effective display surface for displaying an image and arranged to display an image related to the particular video signal reproduced by said reproducing device, said display device being arranged to make a scanning from the upper end to the lower end of said effective display surface in said second predetermined time period during said first predetermined time period.
Claim 8
Dependent Claim
127 words
An image display system comprising: (a) a reproducing device for reproducing one field portion of a particular video signal from a recording medium in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period, a horizontal synchronizing period of the particular video signal being shorter than that of a normal video signal; and (b) a display device having an effective display surface for displaying an image and arranged to display an image related to the particular video signal reproduced by said reproducing device, said display device being arranged to make a scanning from the upper end to the lower end of said effective display surface in said second predetermined time period during said first predetermined time period.
Claim 9
Dependent Claim
54 words
A system according to claim 6, wherein said reproducing device is arranged to reproduce from a recording medium having a number of tracks formed thereon and each containing one field portion of video signal, and to reproduce one track of video signal in said second predetermined time period during said first predetermined time period.
Claim 10
Dependent Claim
48 words
A system according to claim 6, wherein said reproducing device includes means for reproducing an audio signal recorded on said recording medium and for expanding the time axis so that an audio signal reproduced in said second predetermined time period is reproduced during said first predetermined time period.
Claim 11
Dependent Claim
130 words
An image display system comprising: (a) a video camera for producing one field portion of a video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) input means for inputting a video signal including one field portion in said first predetermined time period; (c) selecting means for selectively outputting the video signal produced from said video camera and the video signal input by said input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
Claim 12
Dependent Claim
130 words
An image display system comprising: (a) a video camera for producing one field portion of a video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) input means for inputting a video signal including one field portion in said first predetermined time period; (c) selecting means for selectively outputting the video signal produced from said video camera and the video signal input by said input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
Claim 13
Dependent Claim
98 words
A system according to claim 9, wherein said display device is arranged so that when said selecting means produces the video signal produced from said video camera, the scanning period of the vertical direction from the upper end to the lower end of said effective display surface is not longer than said second predetermined time period, and when said selecting means produces the video signal input by said input means, the scanning period of the vertical direction from the upper end to the lower end of said effective display surface is longer than said second predetermined time period.
Claim 14
Dependent Claim
37 words
A system according to claim 9, further comprising a video recorder for recording one field portion of the video signal produced from said video camera in said second predetermined time period during said first predetermined time period.
Claim 15
Dependent Claim
134 words
An image display device comprising: (a) a reproducing device for reproducing one field portion of a video signal from a recording medium in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) input means for inputting a video signal including one field portion in said first predetermined time period; (c) selecting means for selectively outputting the video signal reproduced by said reproducing device and the video signal input by said input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
Claim 16
Dependent Claim
134 words
An image display device comprising: (a) a reproducing device for reproducing one field portion of a video signal from a recording medium in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) input means for inputting a video signal including one field portion in said first predetermined time period; (c) selecting means for selectively outputting the video signal reproduced by said reproducing device and the video signal input by said input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
Claim 17
Dependent Claim
66 words
A system according to claim 12, wherein said display device is arranged so that the scanning period of the vertical direction from the upper end to the lower end of said effective display surface when said selecting means produces the video signal reproduced by said reproducing means is set to be shorter than when said selecting means produces the video signal input by said input means.
Claim 18
Dependent Claim
32 words
A system according to claim 12, further comprising a video camera for producing one field portion of a video signal in said second predetermined time period during said first predetermined time period.
Claim 19
Dependent Claim
63 words
A system according to claim 14, wherein said selecting means includes first switching means for selectively outputting the video signal produced by said video camera and the video signal reproduced by said reproducing means, and second switching means for selectively supplying the video signal output by said first switching means and the video signal input by said input means to said display device.
Claim 20
Dependent Claim
37 words
A system according to claim 15, wherein said display device is arranged to change over the scanning period of the vertical direction of said display surface in response to a selecting operation of said second switching means.
Claim 21
Dependent Claim
28 words
A system according to claim 14, wherein said reproducing device is arranged such that the video signal produced by said video camera is recordable on said recording medium.
Claim 22
Dependent Claim
29 words
A system according to claim 12, wherein said display device includes a vertical deflection circuit and a plurality of time constant circuits selectively connected to said vertical deflection circuit.
Claim 23
Dependent Claim
143 words
An image display device comprising: (a) first input means for inputting one field portion of a video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) second input means for inputting one field portion of a video signal in a time period different from said second predetermined time period during said first predetermined period; (c) selecting means for selectively outputting the video signal input by said first input means and the video signal input by said second input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
Claim 24
Dependent Claim
143 words
An image display device comprising: (a) first input means for inputting one field portion of a video signal in a second predetermined time period during a first predetermined time period which is longer than said second predetermined time period; (b) second input means for inputting one field portion of a video signal in a time period different from said second predetermined time period during said first predetermined period; (c) selecting means for selectively outputting the video signal input by said first input means and the video signal input by said second input means; and (d) a display device having an effective display surface for displaying an image related to an output signal of said selecting means, said display device being arranged to change over the vertical scanning speed of said effective display surface in response to a selecting operation of said selecting means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-27 | 1997-03-29 | 1997-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-27 | 2001-03-29 | 2001-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-27 | 2005-03-29 | 2005-09-28 | $7700.00 | Window Closed / Lapsed |