Video signal processing apparatus and video signal processing method
First Claim
1. A video signal processing apparatus for encoding video signal pictures on the basis of groups of pictures, comprising:
- input means for receiving input video signals;
specification means for specifying the resolution of said input video signals;
control means for controlling the number of pictures in two temporally adjacent groups of pictures to have a number combination of pictures selected from 21+9, 18+12, 15+15, 12+18 and 9+21;
the number of pictures in each group being determined to control a changing point between the two groups such that the specified resolution of the video signals is maintained at a constant value; and
coding means for coding said two groups of pictures.
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Abstract
A video signal processing apparatus and a video signal processing method can switch resolution effectively and efficiently. The video signals coming from an imaging apparatus is converted into digital signals by an A/D converter 2 an compressed by a compressor 3. The compressed video signals are written into a recording medium 5 by means of a write device 4. The compressor 3 encodes the video signals for each group of pictures comprising a plurality of pictures and the camera compression control unit 6 controls the compressor 3 so as encode the pictures of a first group of pictures and those of a second group of pictures arranged temporally adjacent to the first group of pictures, while maintaining the number of pictures of two temporally adjacent groups of pictures that contain a resolution change point of video signals to a constant value, and change the resolution of the pictures of the two groups of pictures.
142 Citations
6 Claims
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1. A video signal processing apparatus for encoding video signal pictures on the basis of groups of pictures, comprising:
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input means for receiving input video signals;
specification means for specifying the resolution of said input video signals;
control means for controlling the number of pictures in two temporally adjacent groups of pictures to have a number combination of pictures selected from 21+9, 18+12, 15+15, 12+18 and 9+21;
the number of pictures in each group being determined to control a changing point between the two groups such that the specified resolution of the video signals is maintained at a constant value; and
coding means for coding said two groups of pictures. - View Dependent Claims (2, 3)
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4. A video signal processing method of encoding video signal pictures on the basis of groups of pictures, comprising the steps of:
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specifying the resolution of said input video signals;
controlling the number of pictures in two temporally adjacent groups of pictures to have a number combination of pictures selected from 21+9, 18+12, 15+15, 12+18 and 9+21;
the number of pictures in each group being determined to control a changing point between the two groups such that the specified resolution of the video signals is maintained at a constant value; and
coding said two groups of pictures. - View Dependent Claims (5, 6)
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Specification