| 摘要 |
An operator ( 32 ) with transmitter overwrite protection is used with a plurality of different transmitters ( 40, 42, 44 ). Each type of transmitter has at least one command button that when actuated generates a signal which includes at least a transmitter identifying code. The operator includes a receiver ( 170 ) capable of receiving the signal from any of the plurality of transmitters and a memory device ( 62 ) that has a plurality of storage locations ( 63 a-f). A controller ( 60 ) is connected to the receiver and the controller stores each transmitter identifying code in a corresponding storage location. The controller overwrites one of the transmitter identifying codes in a corresponding storage location when a new transmitting code is learned if the plurality of storage locations are full, except for the transmitter identifying codes for one specific type of the plurality of transmitters. In the preferred embodiment, the specific type of transmitter is a wall station transmitter ( 42 ) with more than one function button. The different types of transmitters may be provided with corresponding levels of overwrite priority. |
