| 摘要 |
When information is transmitted via infrared light signals, for example in the case of a remote control for a broadcast or television receiver or in the case of a keyboard for a computer, interference can occur which prevents the correct reception of the information in the processing device. To ensure undisturbed operation in the most frequent case of a temporary interference, the received command signal or a state triggered by it is transmitted back to the operating unit from the processing device and when this retransmission does not occur within a predetermined time, the same information is sent out again by the operating unit. It is only when the new transmission or a predetermined number of successive new transmissions is not successful that this is reported to the user. <IMAGE>
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