FRAME COMPOSING STATE MANAGEMENT EQUIPMENT

摘要

PURPOSE:To eliminate a limit of an accommodated path number due to a mem ory capacity required for managing the composition state of a frame. CONSTITUTION:A frame identification number allocation section 27 allocates a frame identification number to a frame at the start of composition of each frame. Thus, the composition state of each frame is managed by a frame composition state control section 30 based on the frame identification number. When the composition of each frame is finished, the frame identification number allocated by the frame is released from a frame identification number allocation section 27.