发明名称 Local communication bus system and apparatuses for use in such a system.
摘要 <p>A number of domestic audio/video apparatuses (10-14) are connected to a serial control bus (D2B, 16). Each apparatus is addressable via the bus as a device and contains functional elements addressable on subdevices. One apparatus (14) includes an on-screen display subdevice (41) and a first control subdevice (24). Subdevice status messages are defined whereby a control subdevice can ask to be informed of the status of a further subdevice (e.g. 26), and in particular to be informed automatically of any change in status without the need for continuous polling of subdevices. The subdevice status messages can be used to obtain early confirmation of a signal path being established through the system. &lt;IMAGE&gt;</p>
申请公布号 EP0510739(A2) 申请公布日期 1992.10.28
申请号 EP19920200771 申请日期 1992.03.18
申请人 D2B SYSTEMS CO. LTD. 发明人 WELMER, HARM JAN
分类号 H05K11/00;G11B31/00;H04B1/20;H04N5/445 主分类号 H05K11/00
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