Patent ID: 6587641
Filing Date: 2003-07-01
Classification: G11B,H04N

Abstract:
A data output apparatus for exclusively writing on a recording medium a data stream to be inputted and reading said data stream recorded on said recording medium to send said data stream to an external device,said data stream containing video-audio information compressed at a variable bit rate, said data output apparatus comprising: a first buffer for holding said inputted data stream; writing means for writing on said recording medium said data stream held in said first buffer; a second buffer for holding said data stream to be outputted to said external device; reading means for reading onto said second buffer said data stream held on said recording medium; predicting means for predicting duration to consume said data stream held on said second buffer on the basis of duration required for presentation of the video-audio information contained in said data stream held on said second buffer; and control means for controlling said writing means and said reading means, said control means gives a permit to said reading means to read said data stream from said recording medium onto the second buffer if the predicted duration is less than a threshold value.