Koninklijke Philips Corporation N.v.

Gerd Schippmann

Friedrich E Hahn

Kirsten Ohl

Volker Meyer

An arrangement and a method are described for the transmission of address, instruction and/or data telegrams from a control unit to (at least) one controlled unit and for the return of a respective reception acknowledge signal from the controlled unit (units) to the control unit in response to each address, instruction and/or data telegram, the reception acknowledge signal signaling the control unit the correct transmission of the relevant address, instruction and/or data telegram. In order to configure a device and a method of this kind in such a manner that limited quantities of data can be transmitted to the control unit also without incorporating bus transmitter stages in the controlled units, according to the invention in (at least) one controlled unit the reception acknowledge signal in response to one of the address, instruction and/or data telegrams is suppressed, exclusively in dependence on a selectable parameter of the operating state of the controlled unit, also in the case of correct transmission of the address, instruction and/or data telegram; the control unit in that case is always signaled an incorrect transmission and the nonarrival in the control unit of a reception acknowledge signal in response to said address, instruction and/or data telegram is evaluated as an information signal concerning the selectable parameter of the operating state of the controlled unit.

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Bad Bramstedt, Germany

Gerd Schippmann