WO2005010939A3 - Method and apparatus for smoothing current consumption in an integrated circuit - Google Patents

Method and apparatus for smoothing current consumption in an integrated circuit Download PDF

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Publication number
WO2005010939A3
WO2005010939A3 PCT/US2004/022626 US2004022626W WO2005010939A3 WO 2005010939 A3 WO2005010939 A3 WO 2005010939A3 US 2004022626 W US2004022626 W US 2004022626W WO 2005010939 A3 WO2005010939 A3 WO 2005010939A3
Authority
WO
WIPO (PCT)
Prior art keywords
time period
processing time
processing
circuit
smoothing
Prior art date
Application number
PCT/US2004/022626
Other languages
French (fr)
Other versions
WO2005010939A2 (en
Inventor
Alain Vergnes
Original Assignee
Atmel Corp
Alain Vergnes
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0308735A external-priority patent/FR2857804B1/en
Application filed by Atmel Corp, Alain Vergnes filed Critical Atmel Corp
Priority to CN2004800205487A priority Critical patent/CN1823275B/en
Priority to EP04778231A priority patent/EP1651969A4/en
Publication of WO2005010939A2 publication Critical patent/WO2005010939A2/en
Publication of WO2005010939A3 publication Critical patent/WO2005010939A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/75—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation
    • G06F21/755—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation with measures against power attack

Abstract

The invention includes a system for smoothing current consumption in a digital logic module. A processing circuit is configured to receive an input and manipulate the input during a processing time period to produce an output. A non-processing time period follows production of the output. The processing circuit is further configured to draw an active range of current during the processing time period and an inactive range of current during the non-processing time period. The system comprises a smoothing circuit coupled to the processing circuit and configured to engage the processing circuit during the non-processing time period. The smoothing circuit is also configured to cause the processing circuit to draw an active range of current during the non-processing time period.
PCT/US2004/022626 2003-07-17 2004-07-12 Method and apparatus for smoothing current consumption in an integrated circuit WO2005010939A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2004800205487A CN1823275B (en) 2003-07-17 2004-07-12 Method and apparatus for smoothing current consumption in an integrated circuit
EP04778231A EP1651969A4 (en) 2003-07-17 2004-07-12 Method and apparatus for smoothing current consumption in an integrated circuit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0308735A FR2857804B1 (en) 2003-07-17 2003-07-17 METHOD AND APPARATUS FOR SMOOTHING POWER CONSUMPTION IN AN INTEGRATED CIRCUIT
FR0308735 2003-07-17
US10/883,203 2004-06-30
US10/883,203 US6954866B2 (en) 2003-07-17 2004-06-30 Method and apparatus for smoothing current consumption in an integrated circuit

Publications (2)

Publication Number Publication Date
WO2005010939A2 WO2005010939A2 (en) 2005-02-03
WO2005010939A3 true WO2005010939A3 (en) 2005-11-17

Family

ID=34105938

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/022626 WO2005010939A2 (en) 2003-07-17 2004-07-12 Method and apparatus for smoothing current consumption in an integrated circuit

Country Status (2)

Country Link
EP (1) EP1651969A4 (en)
WO (1) WO2005010939A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101312017B (en) 2007-05-22 2012-05-30 香港应用科技研究院有限公司 Image display apparatus and its image display process
EP2000936A1 (en) * 2007-05-29 2008-12-10 Gemplus Electronic token comprising several microprocessors and method of managing command execution on several microprocessors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5086467A (en) * 1989-05-30 1992-02-04 Motorola, Inc. Dummy traffic generation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19505097C1 (en) * 1995-02-15 1996-06-05 Siemens Ag Encryption device
FR2784763B1 (en) * 1998-10-16 2001-10-19 Gemplus Card Int ELECTRONIC COMPONENT AND METHOD FOR MASKING THE EXECUTION OF INSTRUCTIONS OR THE HANDLING OF DATA

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5086467A (en) * 1989-05-30 1992-02-04 Motorola, Inc. Dummy traffic generation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1651969A4 *

Also Published As

Publication number Publication date
WO2005010939A2 (en) 2005-02-03
EP1651969A2 (en) 2006-05-03
EP1651969A4 (en) 2007-03-07

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