Patent ID: 6466736
Filing Date: 2002-10-15
Classification: G11B,H04N

Abstract:
In a playback system for processing information stored on a disc, wherein the information stored on the disc is in a first format or a second format, a controller coupled with a MPEG decoder for facilitating the processing of the information, the controller comprising:a read channel subsystem configured to receive an input signal corresponding to the information, the read channel subsystem configured to generate digital signals consponding to the input signal; a first signal processor coupled to the read channel subsystem and configured to receive the digital signals if the information is in the first format, the fit signal processor configured to perform demodulation on tie digital signas to produce first format processed data; and a second signal processor coupled to the read channel subsystem and configured to receive the digital signals if the information is in the second format, the second signal processor configured to perform demodulation on the digital signals to produce a second format processed data; an error code correction and detection subsystem configured to receive the first format processed data if the information is in the first format and configured to receive the second format processed data if the information is in the second format, the error code correction and detection subsystem further configured to perform error detection and correction on the first format processed data and the second format processed data to produce corrected data; a memory subsystem that includes a read first-in-first-out buffer coupled to a memory data input register and the error code correction and detection subsystem, a write first-in-first-out buffer coupled to a memory data output register, and a single memory cell coupled to the memory data output register and the memory data input register; and a parallel interface that receives the corrected data on a parallel bus interface and comprises a plurality of parallel data lines for transferring the corrected data to the MPEG decoder when the information stored on the disc is in the first format and when the information stored on the disc is in the second format.