圧縮画像データのインサート編集方式

Insert edit system for compressed image data

Abstract

(57)【要約】 【課題】この発明は、高能率符号化処理が施された圧縮 画像データを記録再生する装置を用いてインサート編集 を行なう際に、フレーム単位でのインサート編集処理を 行なうことを可能とした圧縮画像データのインサート編 集方式を提供するものである。 【解決手段】高能率符号化された画像データを、Iピク チャから記録する場合、そのIピクチャから次のIまた はPピクチャまでの間のBピクチャを削除して記録し、 Pピクチャから記録する場合、そのPピクチャをIピク チャにエンコードし直し、このIピクチャから次のIま たはPピクチャまでの間のBピクチャを削除して記録 し、Bピクチャから記録する場合、そのBピクチャから 次のIまたはPピクチャまでの間のBピクチャをIピク チャにエンコードし直し、このIピクチャを再生画像上 の時間的順序に対応した位置に配置し直して記録してい る。
PROBLEM TO BE SOLVED: To provide an insert edit system for compressed image data in which insert edit processing in the unit of frames is conducted in the case of conducting insert edit through the use of device recording and reproducing compressed image data subjected to high efficiency coding processing. SOLUTION: In the case of recording an I picture of image data subjected to high efficiency coding, a B-picture is deleted between the I picture and a succeeding I or P picture and the result is recorded. In the case of recording from the P picture, the P picture is encoded into the I picture and a B-picture is deleted between the I picture and a succeeding I or P picture and the result is recorded. In the case of recording the data from a B picture, the B picture from the B picture to the succeeding I or P picture is encoded into the I picture and the I picture is rearranged to positions corresponding to the time sequence on the reproduced image and recorded.

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