The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
Disclosed is a technique for extending the data retention time of battery backed-up memory circuits.
English (United States)
This text was extracted from an ASCII text file.
100% of the total text.
Extending Battery Back-up Time of Memory Arrays
a technique for extending the data retention
time of battery backed-up memory circuits.
computers, power supply voltages are often adjustable
to allow the operating margins of system logic to be tested. "These
computers also typically employ a sophisticated power controller
system to turn power supplies on and off, monitor fault detectors,
and adjust the power supplies during margin testing." [*].
When AC mains
power fails, and batteries are to be the source
of power, the power controller places the computer in standby mode to
minimize battery drain. During standby,
unused functions are powered
off and memory is placed in a "keep-alive" mode. Additional power
may be saved by utilizing the adjustability of the power supplies to
reduce memory supply voltage to a minimum.
A battery support time
extension of 20% or more may be achieved using this technique.
(*) R. Pease, "Programmable Power
Regulators Help Check Out Computer
System Operating Margins," National Semiconductor Linear Brief, 49 .