Abstract: The present disclosure discloses a data storage device having error detection and correction capabilities. The data storage device includes an information encoder/decoder having error checking circuitry to determine whether one or more errors present in an input datastream. When the one or more errors are present in the input datastream, the information encoder/decoder activates error correction circuitry to detect a location one to correct the one or more errors when present in the input datastream. Otherwise, when the one or more errors are not present in the input datastream, the information encoder/decoder deactivates the error correction circuitry. This activation and deactivation conserves power when compared to conventional data storage devices. Any error correction circuitry, if present, in these conventional data storage devices continuously remain active even when the one or more errors are not present in the input datastream.

Abstract: A method for shortening latency of Chien's search and related circuit are disclosed. The method includes the steps of: determining a shifted factor, p; receiving a BCH codeword; computing a syndrome from the BCH codeword; finding an error-location polynomial based on the syndrome; and processing Chien's search for the error-location polynomial to find out roots thereof. p is a number of successive zeroes from the first bit of the BCH codeword, the Chien's search starts iterative calculations by substituting a variable of the error-location polynomial with a nonzero element in Galois Field, GF(2m), and the nonzero element ranges from ?p+1 to ?n, wherein n is a codelength of the BCH codeword and equals 2m?1, and m is a positive integer.

Abstract: A method for shortening latency of Chien's search and related circuit are disclosed. The method includes the steps of: determining a shifted factor, p; receiving a BCH codeword; computing a syndrome from the BCH codeword; finding an error-location polynomial based on the syndrome; and processing Chien's search for the error-location polynomial to find out roots thereof. p is a number of successive zeroes from the first bit of the BCH codeword, the Chien's search starts iterative calculations by substituting a variable of the error-location polynomial with a nonzero element in Galois Field, GF(2m), and the nonzero element ranges from ?p+1 to ?n, wherein n is a codelength of the BCH codeword and equals 2m?1, and m is a positive integer.

Abstract: A detachable optical driver includes a detachable box, a signal import and export device installed in the detachable box, a playing platform; and an encoding/decoding module connecting to and positioned inside the playing platform for being able to export said data to a display facility. The detachable optical driver is a modulized design by enhancing a media playing platform with detachable various functions, such as CD-ROM, CD-RW, DVD-ROM, DVD-RW, DVD-Dual and digital camcorder, home gateway, media database and so on. When the reading device of the optical drive malfunctions, only that malfunctioned reading device needs to be changed.

Abstract: A detachable optical driver includes a detachable box, a signal import and export device installed in the detachable box, a playing platform; and an encoding/decoding module connecting to and positioned inside the playing platform for being able to export said data to a display facility. The detachable optical driver is a modulized design by enhancing a media playing platform with detachable various functions, such as CD-ROM, CD-RW, DVD-ROM, DVD-RW, DVD-Dual and digital camcorder, home gateway, media database and so on. When the reading device of the optical drive malfunctions, only that malfunctioned reading device needs to be changed.