Patent ID: 8260983

Claim:
A recording and/or reproducing apparatus including a plurality of devices for writing in and reading out data and a temporarily recording area shared by the plurality of devices to perform a data transfer between the devices via the temporarily recording area, wherein, a first device of the plurality of devices includes a connecting unit connected with a high-level device to perform the data transfer with the high-level device, a device other than the first device among the plurality of devices, performs the data transfer with the high-level device via the connecting unit in the first device and the temporarily recording area, and when the data transfer is performed between the first device and the device other than the first device without transferring through the high-level device, or between the high-level device and the first device, a command for the data transfer is transferred via the temporarily recording area shared by the plurality of devices or via a CPU included in each of the plurality of devices, and when the data transfer is performed between the first device and the device other than the first device through temporarily recording area, or between the high-level device and the device other than the first device through the temporarily recording area, a communication of a command required for the data transfer is performed between the CPU in the first device and the CPU in the device other than the first device.