Patent ID: 7630647

Claim:
A hybrid IR transmission system, comprising: a common IR transceiver, for receiving a first IR signal; an IR decoding circuit, coupled to said common IR transceiver and decoding said first IR signal; and a filter circuit, coupled between said IR decoding circuit and said common IR transceiver and processing said first IR signal into a second IR signal; wherein said IR decoding circuit comprises: an IrDA module, for decoding said second IR signal which is in IrDA protocol; and a CIR module, for decoding said second IR signal which is in CIR protocol; and wherein said filter circuit comprises: a band stop filter, coupled between said common IR transceiver and said IR decoding circuit for filtering out said first IR signal with carrier frequency within a specified range; a demultiplexer, coupled to said band stop filter and selectively transmitting said second IR signal to said IRDA module and said CIR module.