Path monitoring bit extraction device

Details Path monitoring bit extraction device Path monitoring bit extraction device

1993-06-11

1995-01-03

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 582, 370 681, 3701101, 36518901, 36523001, H04J 314

Patent

active

053792777

ABSTRACT:
A path monitoring bit extraction device in a transmission communication system for dividing a information transmission frame into a plurality of blocks and assigning time slots in the blocks to data of a plurality of paths respectively including a path monitoring bit for transmission in a time division multiplexing manner. The path monitoring bit extraction device comprises a readable and writable memory and detection means for detecting multiplexing positions of the path monitoring bits and block start position in the information transmission frame. Write enabling means enables writing in the memory in response to detection timing of the multiplexing position of the path monitoring bit by the detection means. Write address generating means is responsive to detection of the block start position by the detection means and generates a write address for the memory to 0 vary the value from an initial value in sequence, read address generating means is responsive to a frame pulse and generates a read address for the memory to vary the value from an initial value in sequence.

REFERENCES:
patent: 5113395 (1992-05-01), Murakami et al.
patent: 5128939 (1992-07-01), Takatori et al.
patent: 5172376 (1992-12-01), Chopping et al.
patent: 5271006 (1993-12-01), Ashi et al.

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