Frame buffer memory operations, and this method for a decoding apparatus for restoring a compressed video

摘要

The present invention restores the compressed video which can by operating relates to a method of restoring the compressed video, in particular, to a buffer memory to be used in as restoring the compressed video efficiently, effectively reducing the actual buffer memory capacity It relates to a buffer memory and hence the operating method for a device for decoding. ; Exemplary buffer memory operating method according to the embodiment of the present invention, (A) after decoding the input current I frame, stores the decoded current I frame as in any one of the waiting buffer, and the current I frame is stored in the standby transitioning the previous I frame is stored in the storage buffer to the other one of the air buffer and at the same time switches the buffer to the storage buffer; And (B) with reference to the I frame stored in the storage buffer for the current P frame inputted decoded then, stores the decoded current P frame as in any one of the waiting buffer, and the current P frame is stored in waiting buffer other and a step to switch to a standby buffer. ; Frame buffer memory, a key frame, the decoder, the controller