Video signal processing apparatus
First Claim
1. A video signal processing apparatus comprising:
- (a) input means for inputting a video signal in which one frame is composed of a plurality of fields and scanning lines are interlaced among the plurality of fields;
(b) processing means for processing the video signal inputted by said input means, said processing means selectively taking a first mode for sequentially outputting video signals of a plurality of fields of a frame and a second mode for consecutively outputting a video signal of one of the plurality of fields a plurality of times; and
(c) output means for outputting the video signal processed by said processing means to a display device having displayable scanning lines the number of which is smaller than the number of scanning lines per field of the input video signal.
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Abstract
A video signal processing apparatus is arranged to input a video signal in which one frame is composed of a plurality of fields and scanning lines are interlaced among the plurality of fields, selectively take a mode for sequentially outputting video signals of a plurality of fields of a frame and a mode for consecutively outputting a video signal of one of the plurality of fields by a plurality of times, and output the video signal thus processed to a display device having displayable scanning lines the number of which is smaller than the number of scanning lines per field of the input video signal. With the above-described arrangement, even if a video signal in which scanning lines are interlaced is supplied to a display device having a comparatively small number of displayable scanning lines, it is possible to obtain a display image free from a vertical image shake.
17 Citations
39 Claims
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1. A video signal processing apparatus comprising:
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(a) input means for inputting a video signal in which one frame is composed of a plurality of fields and scanning lines are interlaced among the plurality of fields; (b) processing means for processing the video signal inputted by said input means, said processing means selectively taking a first mode for sequentially outputting video signals of a plurality of fields of a frame and a second mode for consecutively outputting a video signal of one of the plurality of fields a plurality of times; and (c) output means for outputting the video signal processed by said processing means to a display device having displayable scanning lines the number of which is smaller than the number of scanning lines per field of the input video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A video signal processing method comprising the steps of:
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(a) inputting a video signal in which one frame is composed of a plurality of fields and scanning lines are interlaced among the plurality of fields; (b) processing the input video signal, said processing step selectively taking a first mode for sequentially outputting video signals of a plurality of fields of a frame and a second mode for consecutively outputting a video signal of one of the plurality of fields a plurality of times; and (c) outputting the video signal processed in said processing step to a display device having displayable scanning lines the number of which is smaller than the number of scanning lines per field of the input video signal. - View Dependent Claims (11, 12)
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13. A display device comprising:
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(a) input means for inputting a video signal in which one frame is composed of a plurality of fields and scanning lines are interlaced among the plurality of fields; (b) processing means for processing the video signal inputted by said input means, said processing means selectively taking a first mode for sequentially outputting video signals of a plurality of fields of a frame and a second mode for consecutively outputting a video signal of one of the plurality of fields a plurality of times; and (c) displaying means, having displayable scanning lines the number of which is smaller than the number of scanning lines per field of the input video signal, for displaying the video signal processed by said processing means. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A video signal processing apparatus comprising:
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(a) input means for inputting a video signal in which one frame includes two fields and scanning lines are interlaced among the two fields; (b) processing means for processing the video signal inputted by said input means, said processing means selectively taking a first mode for sequentially outputting two fields of video signals and a second mode for consecutively outputting a video signal of one of the two fields a plurality of times; and (c) outputting means for inverting the video signal processed by said processing means at predetermined intervals and for outputting the inverted video signal to a display device. - View Dependent Claims (21, 22)
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23. A video signal processing method comprising the steps of:
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(a) inputting a video signal in which one frame includes two fields and scanning lines are interlaced among the two fields; (b) processing the video signal, said processing step selectively taking a first mode for sequentially outputting two fields of video signals and a second mode for consecutively outputting a video signal of one of the two fields a plurality of times; (c) inverting the video signal processed in said processing steps at predetermined intervals; and (d) outputting the video signal inverted in said inverting step to a display device. - View Dependent Claims (24, 25)
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26. A display device comprising:
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(a) input means for inputting a video signal in which one frame includes two fields and scanning lines are interlaced among the two fields; (b) processing means for processing the video signal inputted by said input means, said processing means selectively taking a first mode for sequentially outputting two fields of video signals and a second mode for consecutively outputting a video signal of one of the two fields a plurality of times; (c) inverting means for inverting the video signal processed by said processing means at predetermined intervals; and (d) display means for displaying the inverted video signal inverted by said inverting means to a display device. - View Dependent Claims (27, 28)
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29. A video signal processing apparatus comprising:
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(a) input means for inputting video information corresponding to one picture which includes a plurality of portions of the picture, each portion of the picture consisting of lines equally located in the picture; (b) processing means for processing the video information inputted by said input means, said processing means selectively taking a first mode for outputting all of the plurality of portions of the picture and a second mode for outputting one of the plurality of portions of the picture a plurality of times; and (c) output means for outputting the video information processed by said processing means to a display device having scanning lines the number of which is smaller than the number of lines of each of the portions of the picture. - View Dependent Claims (30, 31)
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32. A video signal processing method comprising the steps of:
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(a) inputting video information corresponding to one picture which includes a plurality of portions of the picture, each portion of the picture consisting of lines equally located in the picture; (b) processing the video information inputted by said input means to output all of the plurality of portions of the picture in a first mode and to output one of the plurality of portions of the picture a plurality of times in a second mode; and (c) outputting the video information processed by said processing means to a display device having scanning lines the number of which is smaller than the number of lines of each of the portions of the picture. - View Dependent Claims (33, 34, 35)
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36. A display device comprising:
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(a) input means for inputting video information corresponding to one picture which includes a plurality of portions of the picture, each portion of the picture consisting of lines equally located in the picture; (b) processing means for processing the video information inputted by said input means, said processing means selectively taking a first mode for outputting the plurality of portions of video information and a second mode for outputting one of the plurality of portions of the video information a plurality of times; and (c) display means for displaying the video information processed by said processing means. - View Dependent Claims (37, 38, 39)
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Specification