Patent ID: 6615398
Filing Date: 2003-09-02
Classification: G06F,G11C

Abstract:
A method for dividing a read only memory (ROM), comprising the steps of:a) when an original ROM has k bits of input data (k being a natural number bigger than 1), 2k numbers of input addresses, c bits of output (c being a natural number bigger than 1) and original data stored on the original ROM are divided into 2i (1&lE;i&lE;k) numbers of sections, storing the smallest value of each section in a q-bit (1&lE;q&lE;c) quantized ROM; and b) storing in an e-bit error ROM, an error value between the original data of the original ROM and the quantized value of the quantized ROM at all (2k numbers of) input addresses of the original ROM (e being the smallest number of bits for expressing all errors at all input address of the original ROM).