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Local communication bus system and apparatus for use in such a system

  • US 5,499,018 A
  • Filed: 05/22/1995
  • Issued: 03/12/1996
  • Est. Priority Date: 03/22/1991
  • Status: Expired due to Fees
First Claim
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1. A local communication bus system comprising:

  • a serial control bus coupled to a plurality of addressable devices, each addressable device comprising at least one respective subdevice which is addressable using said bus;

    a user output subdevice for displaying status information to a user;

    a first addressable device comprising a first control subdevice for initiating the display of said status information;

    a second addressable device comprising a second control subdevice;

    wherein said first control subdevice comprises means for generating and formatting a device information request message which comprises a first device address for addressing said second addressable device;

    wherein said second control subdevice which is responsive to said device information request message and which composes and formats a user-readable message which comprises a further device address and transmits said user-readable message to said user output subdevice for display;

    said device information request message including a field specifying a format for the user-readable message and wherein the second control subdevice is responsive to said field to compose said user-readable message in accordance with the specified format.

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