Movie reproducing apparatus and method

Abstract

If a movie reproducing apparatus detects an error during reproduction of encoded movie data, based on management information that includes a recording position of an intra-picture coded picture included in the encoded movie data, the movie reproducing apparatus determines a position used when the error is recovered by searching for an intra-picture coded picture subsequent to a frame including data with the error as well as updates elapsed time information to be displayed based on a frame number of the searched intra-picture coded picture at the time the error is recovered.

1 . A movie reproducing apparatus for reproducing encoded movie data that does not include time stamp information, the apparatus comprising:
 a reproduction unit configured to reproduce the encoded movie data from a storage medium wherein the encoded movie data contains an intra-picture coded picture and an inter-coded picture;   a decoding unit configured to decode data reproduced by the reproduction unit;   a display unit configured to display a moving image of the movie data and elapsed time information of the moving image based on the movie data decoded by the decoding unit;   wherein if an error of the movie data occurs while the reproduction unit is reproducing the movie data,   the display unit, in response to a recovery of the error of the movie data, updates elapsed time information to be displayed based on information of an intra-picture coded picture of the movie data.   
     
     
         2 . The movie reproducing apparatus according to  claim 1 , wherein the error of the movie data is a decode error of the movie data. 
     
     
         3 . The movie reproducing apparatus according to  claim 1 , further comprising an error detector configured to detect the error of the movie data. 
     
     
         4 . The movie reproducing apparatus according to  claim 1 , wherein the information of the intra-picture coded picture contains a frame number of the intra-picture coded picture. 
     
     
         5 . The movie reproducing apparatus according to  claim 1 , further comprising a searching unit configured to search the intra-picture coded picture. 
     
     
         6 . The movie reproducing apparatus according to  claim 5 , the searching unit searches the intra-picture coded picture based on management information of the movie data indicating a recording position of an intra-picture coded picture. 
     
     
         7 . The movie reproducing apparatus according to  claim 5 , wherein the searching unit changes a search interval during a search in such a manner that the search interval is increased according to a number of consecutive error times in a subsequent intra-picture coded data. 
     
     
         8 . The movie reproducing apparatus according to  claim 6 , the reproduction unit reproduces the management information of the movie data from the storage medium. 
     
     
         9 . A movie reproducing apparatus for reproducing encoded movie data that does not include time stamp information, the apparatus comprising:
 a reproduction unit configured to reproduce the encoded movie data from a storage medium wherein the encoded movie data contains an intra-picture coded picture and an inter-picture coded picture;   a decoding unit configured to decode the movie data reproduced by the reproduction unit; and   a display unit, if an error of the movie data occurs while reproducing the movie data, configured to display displays error information that includes a period of a frame dropped caused by the error or a number of dropped frames caused by the error, in response to a recovery of the error of the movie data.   
     
     
         10 . The movie reproducing apparatus according to  claim 9 , wherein the display unit displays the error information based on information of an intra-picture coded picture of the movie data. 
     
     
         11 . The movie reproducing apparatus according to  claim 9 , wherein the error of the movie data is a decode error of the movie data. 
     
     
         12 . The movie reproducing apparatus according to  claim 9 , further comprising an error detector configured to detect the error of the movie data. 
     
     
         13 . The movie reproducing apparatus according to  claim 10 , wherein the information of the intra-picture coded picture contains a frame number of the intra-picture coded picture. 
     
     
         14 . The movie reproducing apparatus according to  claim 10 , further comprising a searching unit configured to search the intra-picture coded picture. 
     
     
         15 . The movie reproducing apparatus according to  claim 14 , wherein the searching unit searches the intra-picture coded picture based on management information of the movie data indicating a recording position of an intra-picture coded picture. 
     
     
         16 . The movie reproducing apparatus according to  claim 14 , wherein the searching unit changes a search interval during a search in such a manner that the search interval is increased according to a number of consecutive error times in a subsequent intra-picture coded data. 
     
     
         17 . The movie reproducing apparatus according to  claim 15 , the reproduction unit reproduces the management information of the movie data from the storage medium. 
     
     
         18 . A movie reproducing method for reproducing encoded movie data that does not include time stamp information, the method comprising:
 reproducing the encoded movie data from a storage medium wherein the encoded movie data contains an intra-picture coded picture and an inter-picture coded picture;   decoding the movie data reproduced; and   displaying a moving image of the movie data and elapsed time information of the moving image based on the movie data decoded;   wherein if an error of the movie data occurs while the reproduction unit is reproducing the movie data, displaying, in response to a recovery of the error of the movie data, updates elapsed time information to be displayed based on information of an intra-picture coded picture of the movie data.   
     
     
         19 . A movie reproducing method for reproducing encoded movie data that does not include time stamp information, the method comprising:
 reproducing the encoded movie data from a storage medium wherein the encoded movie data contains an intra-picture coded picture and an inter-picture coded picture;   decoding the movie data reproduced; and   if an error of the movie data occurs while reproducing the movie data, displaying error information that includes a period of a frame dropped caused by the error or a number of dropped frames caused by the error.