Slow motion and high speed for digital video

Abstract

Presented herein are systems and methods for slow motion and high speed for digital video. In one embodiment, there is presented a method for displaying pictures. The method comprises displaying a top field from a particular picture, for a predetermined number of consecutive vertical synchronization pulses; and displaying a bottom field from the particular picture for the predetermined number of consecutive vertical synchronization pulses.

1 . A method for displaying pictures, said method comprising: 
 displaying a top field from a particular picture, for a predetermined number of consecutive vertical synchronization pulses; and    displaying a bottom field from the particular picture for the predetermined number of consecutive vertical synchronization pulses.    
   
   
       2 . The method of  claim 1 , further comprising: 
 receiving an indication to display the pictures in slow motion by a factor of the predetermined number.    
   
   
       3 . The method of  claim 1 , wherein displaying the top field further comprises: 
 displaying the top field at vertical synchronization pulses corresponding to the bottom field.    
   
   
       4 . The method of  claim 1 , wherein displaying the bottom field further comprises: 
 displaying the bottom field at vertical synchronization pulses corresponding to the top field.    
   
   
       5 . A method for displaying pictures, said method comprising: 
 receiving an indication to display the pictures at high speed by a factor of a predetermined number;    examining the predetermined number of the pictures during a video display period; and    decoding particular ones of the predetermined number of the pictures, wherein the predetermined ones are either reference pictures or pictures that are to be displayed at high speed.    
   
   
       6 . The method of  claim 5 , further comprising: 
 determining which ones of the predetermined number of the pictures are displayed at high speed.    
   
   
       7 . The method of  claim 6 , wherein some of the reference pictures are not among the ones of the predetermined number of the pictures that are displayed at high speed.  
   
   
       8 . The method of  claim 7 , wherein some of the ones of the predetermined number of pictures displayed at high speed are not reference pictures.  
   
   
       9 . The method of  claim 8 , wherein the some of the ones of the predetermined number of pictures displayed at high speed are bi-directionally predicted pictures.  
   
   
       10 . A system for displaying pictures, said system comprising: 
 a display engine for providing a top field from a particular picture for display for a predetermined number of consecutive vertical synchronization pulses and for providing a bottom field from the particular picture for display for the predetermined number of consecutive vertical synchronization pulses.    
   
   
       11 . The system of  claim 10 , wherein the display engine receives an indication to display the pictures in slow motion by a factor of the predetermined number.  
   
   
       12 . The system of  claim 10 , wherein the display engine provides the top field for display at vertical synchronization pulses corresponding to the bottom field.  
   
   
       13 . The system of  claim 10 , wherein the display engine provides the bottom field for display at vertical synchronization pulses corresponding to the top field.  
   
   
       14 . A system for displaying pictures at high speed by a factor of a predetermined number, said system comprising; 
 a buffer for storing parameters associated with the predetermined number of the pictures during a video display period; and    a video decoder for decoding particular ones of the predetermined number of the pictures, wherein the predetermined ones are either reference pictures or pictures that are to be displayed at high speed.    
   
   
       15 . The system of  claim 14 , further comprising: 
 a display manager for determining which ones of the predetermined number of the pictures are displayed at high speed.    
   
   
       16 . The system of  claim 15 , wherein some of the reference pictures are not among the ones of the predetermined number of the pictures that are displayed at high speed.  
   
   
       17 . The system of  claim 16 , wherein some of the ones of the predetermined number of pictures displayed at high speed are not reference pictures.  
   
   
       18 . The system of  claim 17 , wherein the some of the ones of the predetermined number of pictures displayed at high speed are bi-directionally predicted pictures.