Moving picture compression/expansion apparatus

Abstract

A moving picture compression apparatus in which signal deterioration can be minimized on repeated compression/expansion. The moving picture compression apparatus compresses a moving picture signal having a motion vector multiplexed in its blanking portion and includes a motion vector separator 13 for separating the motion vector multiplexed in the blanking portion of the moving picture signal and components from a difference calculating unit 2 to a motion compensation unit 10 for compressing the moving picture signal using the motion vector.

What is claimed is:  
     
         1 . A moving picture compression device comprising: 
 motion vector separating means for separating a motion vector multiplexed in a blanking portion of a moving picture signal; and    compression means for compressing the moving picture signal using the motion vector.    
     
     
         2 . The moving picture compression device as claimed in  claim 1  further comprising: 
 motion vector detection means for detecting, from the moving picture signal freed of the multiplexed motion vector, a new motion vector by retrieving the neighborhood of the separated motion vector;  
 the compression means compressing the picture signals using the new motion vector.  
 
     
     
         3 . The moving picture compression device as claimed in  claim 1  wherein the motion vector multiplexed in the blanking portion of the picture signals is quantized; the moving picture compression device further comprising: 
 motion vector dequantization means for dequantizing the quantized motion vector separated by said motion vector separating means.  
 
     
     
         4 . The moving picture compression device as claimed in  claim 1  wherein the motion vector multiplexed in the blanking of the picture signals is quantized; the moving picture compression device further comprising: 
 motion vector dequantization means for dequantizing the quantized motion vector separated by said motion vector separating means; and  
 motion vector detection means for detecting, from the moving picture signal freed of the multiplexed motion vector, a new motion vector by retrieving the neighborhood of the separated motion vector;  
 said compression means compressing the picture signals using the new motion vector.  
 
     
     
         5 . A moving picture expansion device comprising: 
 motion vector separating means for separating a motion vector supplied in a state of being appended to the compressed moving picture signal;    expansion means for expanding the compressed moving picture signals using the separated motion vector; and    multiplexing means for multiplexing the separated motion vector in the blanking portion of the expanded moving picture signal.    
     
     
         6 . The moving picture expansion device as claimed in  claim 5  further comprising: 
 motion vector quantizing means for quantizing the separated motion vector;  
 said multiplexing means multiplexing the separated quantized motion vector in the blanking portion of the expanded moving picture signal.