Method and apparatus for buffering variable-rate data

Details Method and apparatus for buffering variable-rate data Method and apparatus for buffering variable-rate data

1997-01-24

2000-08-22

Loomis, Paul

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 53, 369 54, 369 58, 360 7302, G11B 509, G11B 390, G11B 2736, G11B 1546

Patent

active

061082864

ABSTRACT:
Data (such as digital audio data) is reproduced from a disk medium at a variable data rate and is then converted to a constant data rate by storing the reproduced data in a buffer memory and reading out the stored data at the constant data rate. Overload of the memory is detected and the reproducing head repeats reproduction of such data from the disk medium that has not been stored. When the data is configured in blocks, memory overload can be detected by input and output block counters and a buffer space comparator which compares the input and output block counts to the memory so as to provide an indication of memory overload.
When the disk medium is driven at constant speed, the storage capacity of the disk medium can be increased compared to that of a constant angular velocity with constant read/write data rate system.

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patent: 5337295 (1994-08-01), Maeda
patent: 5471450 (1995-11-01), Yonemitsu et al.
patent: 5473588 (1995-12-01), Tanaka et al.

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