Patent ID: 8774264
Filing Date: 2014-07-08
Classification: H04N

Abstract:
1. An image insertion device for compressed video data, comprising: a partial decoder for partially decoding of compressed video data which has been input; an image insertion region separator separating an image insertion region in the partially decoded video data; an image insertion unit for inserting an image into the image insertion region; a partial re-encoder for encoding and recompressing the image which has been inserted in the image insertion region; and a bit-amount control unit for controlling the bit amount of recompressed data with the partial re-encoder to a target bit amount, wherein the partial re-encoder determines an encoding mode of the image inserted in the image insertion region of a insertion starting frame for inserting the image, by which insertion of the image is started, according to a picture type of the insertion starting frame, wherein the partial re-encoder executes intra-frame coding of the image inserted in the image insertion region of the insertion starting frame when the insertion starting frame is an intra-coded frame, executes intra-frame coding of the image insertion region of the insertion starting frame when the insertion starting frame is a predictive-coded frame, and executes, when the insertion starting frame is bidirectionally predictive-coded frame, intra-frame coding of the image insertion region of a subsequent reference predictive-coded frame referred to by the insertion starting frame, and then executes unidirectionally inter-frame coding of the image insertion region of the insertion starting frame from the subsequent reference predictive-coded frame.