1996-07-02
1997-04-08
Donaghue, Larry D.
395250, 395872, 39520014, 39520013, G06F 1312
Patent
active
056196539
ABSTRACT:
A buffer device with a resending function includes data holders each for storing one unit of data, write attribute flags provided for each one of the data holder for indicating whether data is stored within the corresponding data holders, a write data bus connected to the data holders to transmit data from a transmission side, a read data bus connected to the data holders to transmit data to a reception side, a write pointer that designates a write sequence of data when storing data to any of the data holders, a read pointer that designates a read sequence of data when taking data from any of the data holders, and a controller that controls transmission of data to the reception side based on the input of a restart signal and an abandon signal. The write attribute flags which correspond to the data holders from which data has been read are not cleared if the abandon signal is inactive. When the restart signal becomes active, the value of the read pointer is altered to the value corresponding to the starting data holder, and the data stored in the buffer devices is resent to the reception side.
REFERENCES:
patent: 4535427 (1985-08-01), Jiang
patent: 4829524 (1989-05-01), Yoshida
patent: 4935894 (1987-08-01), Ternes et al.
patent: 4939720 (1990-07-01), Bakka
patent: 5155810 (1992-10-01), McNamara, Jr. et al.
patent: 5283763 (1994-02-01), Pham et al.
Donaghue Larry D.
NEC Corporation
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