EP2002268A4 - Methods and apparatus for differential signaling using absolute pressure sensors - Google Patents

Methods and apparatus for differential signaling using absolute pressure sensors

Info

Publication number
EP2002268A4
EP2002268A4 EP06740009A EP06740009A EP2002268A4 EP 2002268 A4 EP2002268 A4 EP 2002268A4 EP 06740009 A EP06740009 A EP 06740009A EP 06740009 A EP06740009 A EP 06740009A EP 2002268 A4 EP2002268 A4 EP 2002268A4
Authority
EP
European Patent Office
Prior art keywords
methods
pressure sensors
absolute pressure
differential signaling
signaling
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06740009A
Other languages
German (de)
French (fr)
Other versions
EP2002268A1 (en
Inventor
Mark E Schlarmann
Todd F Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NXP USA Inc
Original Assignee
Freescale Semiconductor Inc
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
Application filed by Freescale Semiconductor Inc filed Critical Freescale Semiconductor Inc
Publication of EP2002268A1 publication Critical patent/EP2002268A1/en
Publication of EP2002268A4 publication Critical patent/EP2002268A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measuring Fluid Pressure (AREA)
EP06740009A 2006-03-29 2006-03-29 Methods and apparatus for differential signaling using absolute pressure sensors Withdrawn EP2002268A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/011568 WO2007111611A1 (en) 2006-03-29 2006-03-29 Methods and apparatus for differential signaling using absolute pressure sensors

Publications (2)

Publication Number Publication Date
EP2002268A1 EP2002268A1 (en) 2008-12-17
EP2002268A4 true EP2002268A4 (en) 2011-10-05

Family

ID=38541432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06740009A Withdrawn EP2002268A4 (en) 2006-03-29 2006-03-29 Methods and apparatus for differential signaling using absolute pressure sensors

Country Status (2)

Country Link
EP (1) EP2002268A4 (en)
WO (1) WO2007111611A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8359927B2 (en) 2009-08-12 2013-01-29 Freescale Semiconductor, Inc. Molded differential PRT pressure sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030057967A1 (en) * 2001-09-24 2003-03-27 Lien Wee Liang Circuit for measuring changes in capacitor gap using a switched capacitor technique
WO2005101030A1 (en) * 2004-04-06 2005-10-27 Analog Devices, Inc. Linearity enhancement for capacitive sensors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571598B2 (en) * 2001-08-13 2003-06-03 The United States Of America As Represented By The Secretary Of The Navy Calibration circuit for use with a differential input preamplifier in a sensor system
US6828802B2 (en) * 2002-08-16 2004-12-07 Rosemount Inc. Pressure measurement device including a capacitive sensor in an amplifier feedback path

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030057967A1 (en) * 2001-09-24 2003-03-27 Lien Wee Liang Circuit for measuring changes in capacitor gap using a switched capacitor technique
WO2005101030A1 (en) * 2004-04-06 2005-10-27 Analog Devices, Inc. Linearity enhancement for capacitive sensors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007111611A1 *

Also Published As

Publication number Publication date
EP2002268A1 (en) 2008-12-17
WO2007111611A1 (en) 2007-10-04

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20081029

AK Designated contracting states

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Designated state(s): DE FR GB

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

A4 Supplementary search report drawn up and despatched

Effective date: 20110906

RIC1 Information provided on ipc code assigned before grant

Ipc: G01L 9/12 20060101ALI20110831BHEP

Ipc: G01R 19/00 20060101AFI20110831BHEP

Ipc: H03K 5/22 20060101ALI20110831BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

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Effective date: 20120404