Patent · US Active

Data encoding scheme to reduce sense current

US7978493B1 · kind B1 · utility

10Cited by

3References

10Claims

0Family size

Assignee

Altera Corporation · US

Inventors

Jun Tan · Kepong, MY
Tze Swan Tan · Bandar Jengka, MY
Chuan Khye Chai · Bukit Mertajam, MY
Boon Jin Ang · Butterworth, MY
Kar Keng Chua · Bukit Mertajam, MY

Key dates

Filing date	Sep 18, 2008
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Feb 8, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG11C17/16
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Techniques for encoding and decoding fuse data to reduce sense current are disclosed. An embodiment to encode fuse sense data includes inverting each of the bits of the fuse data and using an individual fuse as a flag bit to record the data inversion. The states of the respective fuses may represent different logic states. A fuse may be blown to indicate a logic one and likewise, an unblown fuse may indicate a logic zero. A blown fuse and an unblown fuse may have different current consumption. An unblown fuse may consume more sensing current compared to a blown fuse. Another embodiment to decode the encoded fuse data includes embedded logic circuits and a separate fuse as a flag bit. Encoding and decoding fuse data may reduce fuse sensing current.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.