Patent ID: 8625954
Filing Date: 2014-01-07
Classification: G11B,H04N

Abstract:
1. A transmission system comprising: a first recording apparatus and a second recording apparatus connected to each other through a network, wherein the first recording apparatus includes: a recording means for recording an AV stream, a generating means for analyzing picture types of respective pictures included in the AV stream and generating trick play information including time information indicating the time of I-pictures on the AV stream which are necessary to be played back before playing back a picture designated as a playback start position by trick play, and a transmission means for transmitting the AV stream recorded in the recording means to the second recording apparatus with the time information included in the trick play information generated by the generating means; and wherein the second recording apparatus includes: a receiving means for receiving the AV stream and the time information transmitted from the first recording apparatus, and a recording control means for recording the AV stream received by the receiving means on a predetermined recording medium as well as recording trick play information including recording positions of I-pictures included in the AV stream on the predetermined recording medium and time information indicating the time of respective I-pictures on the AV stream, which is generated based on the time information received by the receiving means, on the predetermined recording medium, in which the generating means of the first recording apparatus analyzes the picture types of respective pictures included in the AV stream to acquire presentation time stamp (PTS) information of the I-pictures in generating the trick play information and the recording control means of the second recording apparatus checks that a respective time for each respective I-picture is available from the PTS information from the first recording apparatus and generates the trick play information therefrom without analyzing the picture types of respective pictures included in the AV stream.