Information processing apparatus and method and medium

摘要

To prevent a reservation made from one (e.g. 1) to any other one (e.g. 2, 3 or 4) of the units from being unconditionally accepted or rejected and arbitrate between the units for the reservation in a serial communication network organized using the IEEE 1394 serial data bus (8) for example, reservation information (reserve command) including a reservation priority is generated and transmitted for reservation of use of a part or all (for example, REC, PB, etc. of DVCR) of any other unit connected to the one unit via the network.