The embodiments described herein can be used to enable one-time or few-time programmable memories to work with existing consumer electronic devices (such as those that work with flash—an erasable, non-volatile memory) without requiring a firmware upgrade, thereby providing backwards compatibility while...http://www.google.com.hk/patents/US7689805?utm_source=gb-gplus-share專利 US7689805 - Method and apparatus for using a one-time or few-time programmable memory with a host device designed for erasable/rewriteable memory
