| 摘要 |
PURPOSE:To efficiently detect a part changed from a previous screen by detecting and outputting the part changed from the previous screen from image data encoded by using the correlation of plural screens. CONSTITUTION:In the case of outputting MPEG compression image data decoded by a CODEC 518 to an FLC display 514, Y, Cr and Cb (respectively 8 bits) data 533 and change block data 534 are outputted. The change block data 534 are prepared at the time of decoding in the CODEC 518 and transmitted to a display interface 511 along with the decoded image data. Also, a change area storage memory stores the information of an area where change is generated for a previous frame based on the change block data 534 from the CODEC 518. In such a manner, the part changed from the previous screen is detected from the image data encoded by using the correlation of the plural screens. |
