Electrical computers and digital processing systems: support – Synchronization of clock or timing signals – data – or pulses
Reexamination Certificate
2011-03-01
2011-03-01
Cao, Chun (Department: 2115)
Electrical computers and digital processing systems: support
Synchronization of clock or timing signals, data, or pulses
C713S600000
Reexamination Certificate
active
07900079
ABSTRACT:
A self test function in the Memory Controller is utilized to generate unique and continuous data patterns for each of the words which are stored into two consecutive DRAM addresses in two spaced store operations. The self test function then generates fetch commands to read back the unique data patterns from the two DRAM addresses. In the fetch operations, the data transmission for each operation and between both operations is contiguous (no gaps). A self test data comparison function is then used to compare these fetched data words to data patterns which are generated from the self test data generator. Bit error counters from the memory controller keeps track of any miscompares. By reading out a unique signature from these bit counters, it can be determined whether the store path data are misaligned early or late or correct and/or the fetch path data are misaligned early or late or correct. In addition, the exact number of cycles the data are early or late is known. Based on the last results, either or both the store and/or fetch data path capture window parameters are adjusted to correct or early or late bit position.
REFERENCES:
patent: 5325516 (1994-06-01), Blomgren et al.
patent: 6073253 (2000-06-01), Nordstrom et al.
patent: 6105144 (2000-08-01), Wu
patent: 6449727 (2002-09-01), Toda
patent: 6553527 (2003-04-01), Shephard, III
patent: 6625176 (2003-09-01), Amann et al.
patent: 6892314 (2005-05-01), Chen
patent: 6988231 (2006-01-01), Barnett
patent: 7035368 (2006-04-01), Pickering et al.
patent: 7069458 (2006-06-01), Sardi et al.
patent: 7089440 (2006-08-01), Wu
patent: 7321617 (2008-01-01), Garlett et al.
patent: 7334148 (2008-02-01), Liu et al.
patent: 7590879 (2009-09-01), Kim et al.
patent: 7633877 (2009-12-01), Sharma et al.
patent: 7680179 (2010-03-01), Garlett et al.
patent: 2001/0054135 (2001-12-01), Matsuda
patent: 2007/0140397 (2007-06-01), Jaussi et al.
Chan Kenneth Y.
Kark Kevin W.
Wellwood George C.
Cao Chun
Fleit Gibbons Gutman Bongini & Bianco PL
Gibbons Jon A.
International Business Machines - Corporation
LandOfFree
Data capture window synchronizing method for generating data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data capture window synchronizing method for generating data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data capture window synchronizing method for generating data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2704982