Patent ID: 9497504
Filing Date: 2016-11-15
CPC Classification: G11C,H04N

Claim Text:
1. A method for enhancing fast backward performance, the method comprising: during a playback or fast forward operation, with regard to a plurality of offsets of a multimedia file, temporarily storing part of a plurality of cluster numbers which respectively correspond to part of the plurality of offsets into a first buffering region/buffer, rotating each cluster of the plurality of clusters in and out of a second buffering region/buffer according to capacity of the second buffering region/buffer such that it is replaced by another cluster of the plurality of clusters, so that each cluster is only stored temporarily in the second buffering region/buffer, and rotating each corresponding cluster number in and out of the first buffering region/buffer accordingly, wherein the cluster numbers respectively represent a plurality of clusters belonging to the multimedia file, and the offsets respectively correspond to different playback time points of the plurality of clusters; and utilizing at least one portion of the offsets and the cluster numbers to perform a fast backward operation of the multimedia file, comprising: wherein the offsets are not stored with the cluster numbers.