Low power balance code using data bus inversion

Details Low power balance code using data bus inversion Low power balance code using data bus inversion

2007-04-04

2009-02-24

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Substituting specified bit combinations for other prescribed...

C341S050000

Reexamination Certificate

active

07495587

ABSTRACT:
A method and apparatus for reducing power consumption needed to refresh a memory may receive data having been encoded using data bus inversion (DBI), the DBI data having a first delta between a number of zeros for different cases between zero and a DBI maximum, balance code the DBI data to balance the number of zeros across the DBI data, and output data having a number of zeros for different cases between a minimum number greater than zero and less than or equal to the DBI maximum and a maximum number equal to the minimum number plus a second delta, the second delta being less than the first delta.

REFERENCES:
patent: 6633951 (2003-10-01), Cohen
patent: 7221292 (2007-05-01), Hein

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