Efficient ROM correction technique for digital home appliances

The problem of emergence of fatal bugs in the software that drives microprocessors embedded in digital home appliances necessitates a rescrutiny of strategies that are used to revamp software functionalities of such systems. Existing strategies to remedy such problems involve disintegrating the entire system in order to replace the execution of a defective program of the ROM that stores the software. This paper proposes an efficient and a facile technique that corrects the functions of the ROM using a remote controller based on wireless message transmission and reception. The main advantage of this technique is that unlike existing techniques it does not need entire system disintegration to fix the ROM running the software program. In addition, we extend the proposed technique to be applied for a digital convergence appliance embedding two microprocessors by means of a CD-R instead of the remote controller.