| 摘要 |
PURPOSE:To select a different equipment even with the same equipment selection code and to increase the number of equipment to be selected by generating and incorporating an equipment selection code in a transmit code. CONSTITUTION:The equipment selection code (a) is stored in an equipment selection data register 121 and supplied to a data converting circuit CONV1 to generate the equipment selection conversion code (e) including at least one predetermined bit which is not inverted, thereby storing it in a register 127. A key data code (c), on the other hand, is stored in a register 123 and a key data inverted code (d) is stored in a register 124. Those stored codes (a), (e), (c) and (d) are outputted successively under the control of a control signal (f). A reception side performs conversion reversely to the conversion of the CONV1 and when the codes (a) and (e) are coincident with each other, operation is performed for the first time. |
