METHOD AND APPARATUS FOR TESTING THE READING RELIABILITY OF CD-ROM PLAYER

摘要

AN ALTERNATIVE METHOD FOR TESTING THE READING RELIABILITY OF A CD-ROM PLAYER IS PROVIDED. THE METHOD IS APPLICABLE TO BOTH SEMI-COMPLETE CD-ROM PLAYERS WITHOUT FINAL PACKING ON THE PRODUCTION LINE AS WELL AS COMPLETE CD-ROM PLAYERS. THE METHOD INCLUDES THE FIRST STEP OF WRITING A PREDETERMINED DATA ONTO A PLURALITY OF SECTORS OF A SAMPLE CD-ROM. THE SECTOR HAS A SECTOR ADDRESS AND THE PREDETERMINED DATA IS A ONE-ON-ONE FUNCTION OF THE SECTOR ADDRESS AND IS STORED IN THE SAMPLE CD-ROM IN A FORMAT WHICH DOES NOT INCLUDE AN ERROR DETECTION CODE AND AN ERROR CORRECTION CODE. THE SAMPLE CD-ROM DOES NOT HAVE AN ERROR OF UN-CORRECTABLE TYPE. THE METHOD INCLUDES THE STEP OF GENERATING THE PREDETERMINED DATA BY THE HOST COMPUTER BASED ON THE FUNCTION AND COMPARING THE PREDETERMINED DATA WITH THE SET OF DATA OUTPUT BY A DESCRAMBLER OPERATION OF THE INVENTION TO EVALUATE THE READING RELIABILITY OF THE CD-ROM PLAYER. FIGURE 5