Abstract: Disclosed is a microcomputer such that even when a program cannot be executed in a CPU of the microcomputer due to an external noise, an unstable power-supply voltage, and other causes, and an fatal error such as runaway occurs, returning to the original state is possible within an extremely short time while preferably avoiding initialization of the entire system. During execution of normal software processing, an interrupt signal and a reset signal are output at an arbitrary time, and if it is determined that a CPU of a microcomputer gets into a runaway state, data which has been stored in a RAM as recovery information is read out, and the CPU is recovered to the state before the runaway. Because such recovery from a fatal error occurs within a short time, software which is being executed can continue its processing as if the fatal error had not occurred.

Abstract: Disclosed is an device for restoring information in a main storage unit, wherein, if a malfunction occurs in a microcomputer, the microcomputer is made able to recover from the malfunction. The device comprises: a central processing unit comprising one or more registers; a rewritable first storage unit; a rewritable second storage unit; and storage unit management means. The storage unit management means stores restoration information consisting of storage unit information stored in the first storage unit and register information into the second storage unit, and then the storage unit management means restores the information in the first storage unit and the information in the corresponding one or more registers on the basis of the restoration information stored in the second storage unit.

Abstract: Disclosed is a microcomputer such that even when a program cannot be executed in a CPU of the microcomputer due to an external noise, an unstable power-supply voltage, and other causes, and an fatal error such as runaway occurs, returning to the original state is possible within an extremely short time while preferably avoiding initialization of the entire system. During execution of normal software processing, an interrupt signal and a reset signal are output at an arbitrary time, and if it is determined that a CPU of a microcomputer gets into a runaway state, data which has been stored in a RAM as recovery information is read out, and the CPU is recovered to the state before the runaway. Because such recovery from a fatal error occurs within a short time, software which is being executed can continue its processing as if the fatal error had not occurred.

Abstract: A light sensing film formed by laminating together a transparent/translucent material, an upper transparent electrode, a photosensitive dielectric layer including photosensitive dielectric material, and a lower electrode formed from conductive material such as carbon, a silver coating, a metallic plate, or a conductive coating. A capacitor is composed between the two electrodes. As the dielectric constant of the photosensitive dielectric layer between the two electrodes changes when light enters, capacitance of the capacitor changes, and light intensity can be detected. To regulate capacitance, an additional dielectric layer may be provided between the photosensitive dielectric layer and the lower electrode. The underside of the electrode may be laminated with protective material.

Abstract: A light sensing film including lamination of transparent/translucent material, an upper transparent electrode, a photosensitive dielectric layer including photosensitive dielectric material, a lower dielectric layer, and a lower electrode formed from conductive material such as carbon, a silver coating, a metallic plate, or a conductive coating, wherein: a capacitor is composed between the two electrodes; as the dielectric constant of the photosensitive dielectric layer between the two electrodes changes when light enters, capacitance of the capacitor changes; and accordingly light intensity can be detected. Zinc sulfide may be used as the photosensitive dielectric material, for sensitivity exclusively to ultraviolet rays. Titanium dioxide also may be used for longer life of the dielectric material. To regulate capacitance, an additional dielectric layer may be provided between the photosensitive dielectric layer and the lower electrode.