Patent ID: 7054318

Claim:
A mini cell header reading device for extracting, from a user data channel user data part of an individual connection, comprising a shift register into which a bit stream of the user data channel is shifted in synchronism with clock pulses, a first counter counting a size of a cell indicating field in a header of the mini cell shifted into the shift register in synchronism with said clock pulses, a latch register connected to the first counter and to the shift register to latch an information resident in the cell size indicating field as counted by the first counter, a memory connected to said latch register, a second counter connected to the latch register and a memory for controlling a multiplexor so that the user data part of the mini cell is extracted from said user data bit stream, wherein said information in the latch register is used as address to the memory, and that at said address the size of the user data part is stored.