Data recording controller

Abstract

The present invention provided a data recording controller. A modulation control section 12 receives a write start command WTST from an MPU 18 and starts a start trigger permission STEN to a trigger generation section 20. When a count CNT of a counter 17 is coincident with a value STPOS corresponding to a write start position for a period for outputting the start trigger permission STEN, the trigger generating section 20 starts a start trigger ST. A 8-16 modulation section 11 receiving it reads an initial value set to a parameter register 21, updates it as a parameter for data conversion and allows an output section 16 to output write data converted by using it as output data SIGOUT. The invention is capable of efficiently using a data recording area of a disk medium.

Description

technical field [0001] The present invention relates to a data recording control device for controlling the recording operation of a data recording device that modulates data and records it on a recording medium. Background technique [0002] Generally, when data is recorded on a recording medium, the data to be recorded (original data) is not directly recorded on the recording medium, but the changed data (written data) is often recorded after transformation such as modulation is performed on the original data. in the recording medium. At this time, the transformation performed on the original data is for the purpose of increasing the recording density and securing the reliability, etc. [0003] For example, in a recording device (DVD recording device) that uses DVD (Digital Versatile Disk), one of the optical discs, as a recording medium, when recording to the recording medium, the original data with a predetermined error correction code and the like are added to the orig...

AI Technical Summary

Problems solved by technology

However, at this time, it is necessary to write the connection data, which will reduce the utilization efficiency of the optical disc as the recording area.

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