Design and Implementation of Soft masking method for IC card

IC카드를 위한 Soft masking 방법의 설계 및 구현

Soft masks mean that part or all of the program code for operating system or applications are located in the EEPROM or flash ROM. Since Soft masks allow errors to be corrected and programs to be modified quickly and at minimal cost, they are used primarily during testing and in the field trials. This paper introduces a hardware architecture of IC card for soft masks. We suggest a new down loading scheme for soft-mask ROM connected by an I/O interface. This scheme saves the new IC card development cost and time.