发明名称 Interface control system for exchanging signals by superposing signals to an existed signal line using low voltage differential signal
摘要 Signals are transmitted through a plurality of transmission channels, each including at least a pair of signal lines for transmitting an interface signal, between a transmitter and a receiver. A predetermined signal is modulated by a modulator with a high-frequency signal, and the modulated signal is provided to a signal line of one of the plurality of transmission channels. A demodulator receives the modulated signal transmitted via this signal line, and demodulates the modulated signal from the signal line based on the frequency of the high-frequency signal. According to the above-described configuration, an interface control method and apparatus which can newly exchange other data and control signals while conforming to existent interface specifications are provided.
申请公布号 US6487614(B2) 申请公布日期 2002.11.26
申请号 US19980041791 申请日期 1998.03.13
申请人 CANON KABUSHIKI KAISHA 发明人 NOBUTANI TOSHIYUKI;ICHIHASHI NOBUHARU
分类号 G06F3/00;G09G3/20;G09G5/00;(IPC1-7):G06F3/00;G06F13/00;H04L5/14;G09G1/06 主分类号 G06F3/00
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