| 摘要 |
<p>A control signal generator is disclosed, which is used in a remote control signal transmitter for controlling the circuit operation of an instrument. The generator includes a plurality of key output teminals from which scan signals are outputted and a level detection circuit detecting a level at each key output terminal. The selected one or ones of the key output terminal are coupled to a potential source and the level detection circuit detects the level at the key output terminal during a period except for the scan signal output period, so that a plurality of kinds of custom codes each used for designating the instrument to be controlled are produced by changing the terminal coupled to the potential source and/or by increasing or decreasing its number.</p> |
