Data exchange capable of minimizing loss of a data block

Details Data exchange capable of minimizing loss of a data block Data exchange capable of minimizing loss of a data block

1992-05-22

1994-08-02

Nguyen, Hoa T.

Excavating

371 82, 371 112, G06F 1100

Patent

active

053352327

ABSTRACT:
In a data exchange for use in an asynchronous transfer mode communication system, the data exchange has first and second buffers. An input data block is selectively loaded with the first and the second buffers to be read as first and second output data blocks out of the first and the second buffers. When the first buffer is used as an active buffer, the input data block is loaded with only the first buffer. When the first buffer is changed into a stand-by buffer, the input data block is loaded with the first and the second buffers. A test data block is loaded as the input data block with the first and the second buffers. When a selected one of the first and second output data blocks is coincident with the test data block, a selected one of the first and the second buffers is controlled so that the selected one of the first and the second output data blocks is not read out of the selected one of the first and the second buffers until a remaining one of the first and the second output data blocks is coincident with the test data block. After each of the first and the second output data blocks is coincident with the test data block, the input data block is loaded with only second buffer. The first buffer is changed into the stand-by buffer.

REFERENCES:
patent: 4800532 (1989-01-01), Honeck et al.
patent: 4908839 (1990-08-01), Morimoto et al.
patent: 4930118 (1990-05-01), Sugihara
patent: 5138637 (1992-08-01), Fox
patent: 5163132 (1992-11-01), DuLac et al.

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