| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for detecting and removing the invasion of virus by detecting the virus to exert an adverse influence upon various kinds of electrical appliances. SOLUTION: In power line communication, the information signal wave component of a received high frequency is separated by a branching filter and next, the separated information signal is compared with various kinds of virus patterns so that the virus can be detected and removed. Further, when the virus is detected, an alarm is raised. |
