| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely eliminate illegal transmission by possessing a pair of storage means in a receiver, coinciding a received fixing code with a normal fixing code, and outputting a coincident signal if a variable code is equal to a reference variable code. SOLUTION: When an infrared ray signal is received with a receiver 2, the fixing code is compared and collated with a normal code stored in the storage area 13a of E2PROM 13. When it is judged the normal code, a variable code in the signal is compared and collated with each reference variable code stored to the storage area 13b of E2PROM 13 and RAM 14. If the fixing code received at this time coincides with the normal fixing code and the relation of the variable code received at this time and each reference variable code stored to the storage area 13b and RAM 14 is a prescribed relation, a signal performing addition processing on the variable code is stored to the storage area 13b and RAM 14, and output to a door lock 15 to be unlocked. Thereby a normal signal can be surely discriminated.</p> |
