Apparatus to generate a bit clock and a method of generating the bit clock

Abstract

An apparatus and method for accurately generating a bit clock synchronized with digital data. The device includes: an edge detection unit, a first edge counter, a second edge counter, a first counter, and a bit clock generation unit. The edge detection unit detects edges of digital signals. The first edge counter counts the edges detected during the first cycle. A second edge counter counts edges detected during the second period. If one of the edges is detected during the first period, the first counter is reset and counts the system clock. The bit clock generating unit generates a bit clock based on the count value. An apparatus and method for accurately generating a bit clock synchronized with digital data. The device also includes: an edge detection unit, a first edge counter, a second edge counter, a first counter, and a bit clock generation unit. The edge detection unit detects edges of digital signals. The first edge counter counts the edges detected during the first cycle. A second edge counter counts edges detected during the second cycle. If one of the edges is detected during the first period, the first counter is reset and counts the system clock. If one of the first edge count value and the second edge count value is equal to the first predetermined value, the bit clock generation unit generates the bit clock based on the count value of the first counter or the channel bit interval.

Description

technical field [0001] The present invention relates to an apparatus for generating a bit clock and a method for generating the bit clock, and more particularly, to an apparatus for generating a bit clock synchronized with digital data generated by a digital data generating system and a method for generating the bit clock . Background technique [0002] A system that generates digital data, such as a disk drive, generates a bit clock synchronized with the digital data generated therefrom, and uses the generated bit clock for internal signal processing. For example, a disk drive generates a bit clock synchronized with digital data, and uses the generated bit clock for a decoding operation. [0003] However, in conventional devices that generate bit clocks, digital data with errors is not considered. Therefore, if the digital data has an error, the generated bit clock may also include this error. [0004] For example, in the case of a disc drive, data...

AI Technical Summary

Problems solved by technology

If the generated bit clock includes an error due to the generation of reproduced data with an error, even after the decoder included in the disk drive performs error correction on the reproduced data with an error, the signal reproduced from the disk drive may including errors

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