Transmission method and circuit of virtual container using asynchronous transfer mode

A virtual container transmission circuit using an asynchronous transfer mode, comprising:

• a conversion circuit for converting a virtual container;
• and
• a regeneration circuit for regenerating a virtual container;
• said conversion circuit comprising:
• a pointer detecting circuit for deriving a first bit position of a virtual container in a transmission frame from the value of a pointer of said virtual container,
• a cell assembling circuit for mapping said virtual container onto information fields of cells,
• a cell pointer insertion circuit for deriving information of a first bit position of said virtual container within a cell information field of an asynchronous transfer mode cell from the output of said pointer detection circuit and for inserting said information of the first bit position of said virtual container signal thus derived into a cell as a cell pointer;
• said regeneration circuit comprising:
• a buffer for receiving cells transmitted from said conversion circuit and for temporarily storing the cells,
• a cell disassembling circuit for disassembling said cells and for regenerating the virtual container,
• a cell pointer interpretation circuit for detecting said cell pointer, and
• a pointer insertion circuit for deriving a pointer from the output of said cell pointer interpretation circuit and for supplying the pointer to the virtual container.