Data read-write buffer method and buffer device

Abstract

The invention discloses a data read-write buffer method and a buffer device; the method includes the following steps of writing reserved section data in storage medium to a buffer zone and writing updated data to the buffer zone by a system to form whole buffer zone data for being written to the storage medium. By adopting the method and device of the invention, during the data buffer reading / writing, the non-updated data in the storage medium is written / read, namely when writing the data, the data is read when needed, so as to avoid most of unnecessary reading / writing switching; under the condition of not increasing the memory usage, the data writing or burning speed can be greatly improved.

Description

【Technical field】 [0001] The invention relates to the field of data processing, in particular to a data read-write buffer method and device therein. 【Background technique】 [0002] To realize the Universal Disk Format (UDF) file system on the erasable optical disc, write data needs to use the packet writing (Packet-Writing) method, commonly used erasable optical discs include CD-RW, DVD+ / -RW, DVD- RAM. In the Packet-Writing mode, the number of sectors of the data written each time must be a Packet, and the first address of the data written each time must be an integer multiple of the Packet. At present, the implementation of Packet-Writing is a Read-Modify-Write process. When writing a large amount of data continuously, 32 sector data will be written each time, and a Read / Write switch is required, which greatly affects the write process. Input performance, and frequent Read / Write switching of the optical drive will reduce the service life of the optical drive. figure 1 Wh...

AI Technical Summary

Problems solved by technology

This rate limits the development and implementation of editable UDF disc functions to a certain extent

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