JP2003123381A5

JP2003123381A5 -

Info

Publication number: JP2003123381A5
Application number: JP2001314491A
Authority: JP
Filing date: 2001-10-11
Publication date: 2005-06-23

Claims

A data reading head reads predetermined streaming data from a disk-shaped recording medium on which at least one of a plurality of streaming data to be continuously reproduced or one streaming data to be continuously reproduced is recorded. In a disc playback apparatus for playing back the disc-shaped recording medium ,
A leading cache unit at least provided with a maximum amount of data or more storage capacity corresponding to the seek execution time period of the data read head, stores the data at the starting portion of the streaming data read out from said disc-shaped recording medium,
A ring buffer unit that stores the remaining data excluding the head portion from the streaming data and is used as a ring buffer at the same time;
A control unit that controls storage and reading of data to and from the head cache unit and the ring buffer unit, and controls to sequentially read data stored in the head cache unit during a seek operation of the data read head. A disc player characterized by the above.

The disc player according to claim 1, wherein
When the data amount of the streaming data to be reproduced exceeds the total storage capacity of the head cache unit and the ring buffer unit, the control unit already stores the streaming data with the remaining data exceeding the total storage capacity. Executes control to store the ring buffer unit by overwriting
A disc player characterized by that.

The disc playback apparatus according to claim 1 or 2 , wherein
The plurality of streaming data is recorded on the disc-shaped recording medium,
The above-mentioned top cache portion and the ring buffer unit, provided with a plurality of sets,
The disk reproducing apparatus according to claim 1, wherein the control unit executes control for storing and reading different streaming data for each group.

In a disc playback method for playing back a disc-shaped recording medium on which at least one of a plurality of streaming data to be continuously played back or one streaming data to be played back continuously is recorded,
Of the streaming data read out from said disc-shaped recording medium, the control to be stored in the top cache unit the data of the head portion to be at least the amount of data or more corresponding to the seek execution time period of the data reading head, controller Run ,
The control unit executes control to store the remaining data excluding the head portion from the streaming data in the ring buffer by buffering in a ring shape,
The disk reproducing method according to claim 1, wherein the control unit executes control for sequentially reading data from the head portion stored in the head cache unit during seek execution of the data read head.

At least data reading out of streaming data read from a disk-shaped recording medium on which at least one of a plurality of streaming data to be continuously reproduced or one streaming data to be continuously reproduced is recorded. A head cache step executed by the control unit for controlling the head cache unit to store the data of the head part that is equal to or larger than the data amount corresponding to the seek execution time of the head,
A ring buffer step executed by the control unit for controlling the remaining data excluding the head portion from the streaming data to be stored in the ring buffer unit by buffering in a ring shape,
A memory control program for causing a computer to execute a memory reading step executed by the control unit for sequentially reading data from the head part stored in the head cache unit during seek of the data read head.

A memory control program according to claim 5,
In the ring buffer step, when the data amount of the streaming data to be reproduced exceeds the total storage capacity of the head cache unit and the ring buffer unit, the remaining data exceeding the total storage capacity is already stored in the streaming data. The control unit executes the control to store the ring buffer unit by overwriting.
A memory control program.

7. A computer-readable recording medium on which the memory control program according to claim 5 or 6 is recorded.