Boundary signal extracting device from pointer with structured data transfer information in AAL type 1 and its extraction method

摘要

The present invention relates to a method for extracting a boundary signal from a pointer having structural data transfer information in AAL type 1, which is adapted to extract a frame signal having boundary information of a user data structure from a pointer having information on a user data structure inputted from an ATM layer And a method of extracting the same, the apparatus comprising: a first register (12); A second register (13); A counting unit for counting user data of the segmentation and reassembly protocol data unit (SAR-PDU) from the user clock from the ATM layer and outputting a count bit for user data by an enable signal from the control unit (15) 11); Comparison means (14) for comparing a count bit from the counter (11) with a pointer bit from the second register (13) and outputting a boundary signal; An AND gate 16 for intercepting a boundary signal from the comparison means 14 by a control signal from the control means 15; And control means (15) for enabling the first and second registers (12, 13) and the counter (11) by the cell loss signal and for outputting the frame signal to the AND gate (16) .