APPARATUS FOR PROCESSING TRICK DATA OF HIGH DEFINITION MAGNETIC RECORD PLAYER

摘要

PURPOSE: An apparatus for processing the trick data of a high definition magnetic record player is provided to decode the encoded trick data without a reed Solomon decoder by performing reed Solomon encoding using a third ECC(Error Correction Code) structure. CONSTITUTION: An apparatus for processing the trick data of a high definition magnetic record player comprises an encoder(100) encoding data with a third ECC structure by using a DCT(Discrete Cosine Transform) coefficient of a low frequency element of an intra picture in a transport stream and a decoder(200) for performing inner parity decoding by a demodulated second ECC structure and outer parity decoding by the third ECC structure when a trick mode is selected. The trick data processing apparatus detects only an intra picture from an MPEG2(Moving Picture Expert Group2) transport stream received via an antenna and generates trick data by using a DCT coefficient in the uppermost level of the intra picture. The trick data are encoded by the third ECC structure, and are written on a magnetic tape with encoded normal data. For regenerating the trick data written on the magnetic tape, the trick data detected by a decoding unit for decoding the normal data.