System control method and system control apparatus

Abstract

A control system comprises a plurality of peripheral devices represented as objects, and a controller connectable to the plurality of peripheral devices via a common communication line for unitarily controlling the plurality of peripheral devices. The controller is arranged to be connected to an arbitrary number of peripheral devices selected from among the plurality of peripheral devices, read control information stored in the arbitrary number of peripheral devices via the communication line into a predetermined memory area of the controller in a predetermined format so that the controller can control the arbitrary number of peripheral devices. The controller is also arranged to issue a command and transmit the command to each of the arbitrary number of peripheral devices via the communication line.

1 . A control system comprising:
 a plurality of multimedia devices; and   a control device for controlling said plurality of multimedia devices,   said plurality of multimedia devices and said control device being connected to a network in such a manner that said plurality of multimedia devices and said control device can communicate a message and data based on an object-oriented technique between each of said plurality of multimedia devices and said control device via the network,   said control device including display means for displaying icons representative of said respective plurality of multimedia devices, and pointing means for forming a link between arbitrary multimedia devices selected from among said plurality of multimedia devices to specify a data input and output relationship between the arbitrary multimedia devices.   
     
     
         2 . A control system according to  claim 1 , further comprising a user interface for displaying the link and the icons representative of said respective plurality of multimedia devices connected to the network, and display means for displaying said user interface. 
     
     
         3 . A system control apparatus comprising:
 a plurality of multimedia devices; and   a control device for controlling said plurality of multimedia devices,   said plurality of multimedia devices and said control device being connected to a network in such a manner that said plurality of multimedia devices and said control device can communicate a message and data based on an object-oriented technique between each of said plurality of multimedia devices and said control device via the network,   said control device for controlling said plurality of peripheral devices including data input and output relationship specifying means and data format acceptability determining means, the data format acceptability determining means being arranged to determine, when a data input and output relationship is specified between arbitrary multimedia devices selected from among said plurality of multimedia devices, whether there is a data format acceptable to the selected, arbitrary multimedia devices.   
     
     
         4 . A system control apparatus according to  claim 3 , further comprising means for issuing, if the data format acceptability determining means determines that there is no data format acceptable to the selected, arbitrary multimedia devices, a message indicating that data communication is impossible because there is no data format acceptable to the selected, arbitrary multimedia devices.