Infrared communications system comprising a coding function to reduce the maximum number of consecutive spaces in the signal sent

无线通信系统包括具有用于发送红外信号的发射机(3，23)的客户机(1)，和具有用于接收红外信号(5，25)的主机接收机(4，24)的主机(2)，客户机和主机都具有内部RS-232端口(28，32)。该客户机包括用于生成数据的数据生成器(26)，和用于调制所述数据并把所述调制的数据传送到客户机发射机(23)的调制器(30)。该主机包括用于解调由主机接收机接收的IR信号的解调器(31)。客户机(2，21)包括编码功能(27)，对由数据生成器按标准RS-232格式生成的数据编码，以减小所发送的信号中接连空格的最大数目。主机的解调器被耦合到主机接收机和主机的内部RS-232端口，以解调该被调制的IR信号，以及主处理器(34)被耦合到主机内部RS-232端口。在主机(2)的主处理器中的译码功能(33)通过查找表进行译码。本发明的重要的优点是消除了对附加微处理器的需要。 A wireless communication system comprises a guest (2) with a transmitter (3, 23) for transmitting infrared signals and a host (2) with a host_receiver (4, 24) for receiving an infrared signal (5, 25), both the guest and the host having an internal RS-232 port (28, 32). The guest comprises a data generator (26) for generating data, a modulator (30) for modulating said data and transferring said modulated data to the guest transmitter (23). The host comprises a demodulator (31) for demodulating the IR signal received by the host receiver. The guest (2, 21) comprises a coding function (27) to code data generated by the data generator in standard RS-232 format to reduce the maximum number of consecutive spaces in the signal sent. The demodulator of the host is coupled to the host receiver and the internal RS-232 port of the host to demodulate the modulated IR signals and to a main processor (34) coupled to the host internal RS-232 port. A decoding function (33) in the main processor of the host (2) does the decoding by means of a lookup table. An important advantage of the invention is that the need for an additional microprocessor is removed.