Processing circuit having an error detecting and correcting circ

Details Processing circuit having an error detecting and correcting circ Processing circuit having an error detecting and correcting circ

1988-12-27

1991-04-09

Smith, Jerry

Excavating

371 12, G06F 1110

Patent

active

050070568

ABSTRACT:
A processing circuit for receiving input data having an error detecting and correcting code from a data bus is disclosed, that includes a write data latch circuit connected to the data bus for latching the input data; an error detecting and correcting circuit responsive to an output signal from the write data latch circuit for checking the data and correcting the latched data and outputting an error correction signal when the latched data is erroneous; a register circuit for storing correct data sent from the error detecting and correcting circuit; first and second input data latch circuits each of which is connected to the data bus and the register circuit for temporarily latching the input data from the data bus in the absence of the error correction signal, and for temporarily latching the correct data in the presence of the error correction signal; and an arithmetic unit circuit responsive to the input data latched in the first and second input data latch circuits for executing an operation on the input data and responsive to the correct data latched in the first and second input latch circuits for executing the operation on the correct data. The arithmetic unit circuit first executes an operation on unchecked input data while the input data is checked by the error detecting and correcting circuit, and then executes the operation on the correct data sent from the error detecting and correcting circuit only when the input data is erroneous. High reliability of data is thereby achieved without substantially decrease of a program execution speed.

REFERENCES:
patent: 4058851 (1977-11-01), Scheuneman
patent: 4249253 (1981-02-01), Gentili
patent: 4566063 (1986-01-01), Zolnowsky
patent: 4641305 (1987-02-01), Joyce
patent: 4783783 (1988-11-01), Nagai

Affiliated with

Also associated with

Rating

Processing circuit having an error detecting and correcting circ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Processing circuit having an error detecting and correcting circ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing circuit having an error detecting and correcting circ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2040588