Flag detection for first-in-first-out memories

Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

365221, 365239, G11C 700, G11C 2900

Patent

active

056234490

ABSTRACT:
A technique is provided for setting an error status bit in a first-in, first-out memory having data words with associated error bits. When a word having an associated error bit that is set to indicate an error is written into the FIFO, the write pointer is captured, and a flag is set, indicating that the FIFO has a word with an error. If a second word is written which has an error, that pointer value is captured, overwriting the current value. As the FIFO is read, the read pointers are compared with the captured write pointer. When the values are equal, and the FIFO is read, the flag is cleared, indicating that there are no more errors in the FIFO. In an exemplary case, each word in the FIFO has 8 data bits and 3 error bits. A FIFO used in implementing a UART in a modem typically includes 16 or 32 words.

REFERENCES:
patent: 5345419 (1994-09-01), Fenstermaker et al.
patent: 5357473 (1994-10-01), Mizuno et al.
patent: 5469398 (1995-11-01), Scott et al.
patent: 5502655 (1996-03-01), McClure

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Flag detection for first-in-first-out memories does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flag detection for first-in-first-out memories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flag detection for first-in-first-out memories will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-346366

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.