Patent ID: 7130945
Filing Date: 2006-10-31
Classification: H04L

Abstract:
1. A control method for controlling a plurality of target devices connected to a data bus for transferring data in a predetermined communication format, said control method comprising: generating a first reserve command for permitting transmission of commands from the controller device sending the first reserve command to a first target device that accepts the first reserve command from the controller device, and for inhibiting communication between the first target device and all other of the target devices and all other controller devices; generating a second reserve command for permitting transmission of commands from the controller device to the first target device, and for permitting transmission of at least one designated command to said first target device from other controller devices, and for inhibiting communication of other than the at least one designated command to said first target device from the other controller devices; and selectively transmitting to said target devices and other controller devices said first reserve command and selectively transmitting to said target devices said second reserve command, wherein said predetermined communication format complies with IEEE 1394 criteria.