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WO2013098359A3 - Charge-to-digital timer - Google Patents

Charge-to-digital timer Download PDF

Info

Publication number
WO2013098359A3
WO2013098359A3 PCT/EP2012/076996 EP2012076996W WO2013098359A3 WO 2013098359 A3 WO2013098359 A3 WO 2013098359A3 EP 2012076996 W EP2012076996 W EP 2012076996W WO 2013098359 A3 WO2013098359 A3 WO 2013098359A3
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
charge
digital timer
ramped
elapsed time
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.)
Ceased
Application number
PCT/EP2012/076996
Other languages
French (fr)
Other versions
WO2013098359A2 (en
Inventor
Petri Heliö
Petri Korpi
Paavo Väänänen
Sami Tapani Vilhonen
Niko Mikkola
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.)
ST Ericsson SA
Original Assignee
ST Ericsson SA
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 US13/338,390 external-priority patent/US8659360B2/en
Priority claimed from US13/338,550 external-priority patent/US8618965B2/en
Application filed by ST Ericsson SA filed Critical ST Ericsson SA
Publication of WO2013098359A2 publication Critical patent/WO2013098359A2/en
Publication of WO2013098359A3 publication Critical patent/WO2013098359A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/005—Time-to-digital converters [TDC]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electronic Switches (AREA)

Abstract

The charge-to-digital timer apparatus and method disclosed herein estimates the elapsed time between two signals, e.g., a start signal and a stop signal. To that end, at least a capacitive load is charged with a known current to generate a load voltage. Subsequently, a first voltage is ramped in a plurality of discrete voltage steps associated with a plurality of known capacitances until the ramped voltage satisfies a predetermined criterion relative to a second voltage. The elapsed time is determined from the discrete voltage steps, one of the first and second voltages, the known current, and the known capacitive load.
PCT/EP2012/076996 2011-12-28 2012-12-27 Charge-to-digital timer Ceased WO2013098359A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13/338,550 2011-12-28
US13/338,390 US8659360B2 (en) 2011-12-28 2011-12-28 Charge-to-digital timer
US13/338,390 2011-12-28
US13/338,550 US8618965B2 (en) 2011-12-28 2011-12-28 Calibration of a charge-to-digital timer

Publications (2)

Publication Number Publication Date
WO2013098359A2 WO2013098359A2 (en) 2013-07-04
WO2013098359A3 true WO2013098359A3 (en) 2013-08-22

Family

ID=47553034

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2012/076994 Ceased WO2013098357A2 (en) 2011-12-28 2012-12-27 Calibration of a charge-to-digital timer
PCT/EP2012/076996 Ceased WO2013098359A2 (en) 2011-12-28 2012-12-27 Charge-to-digital timer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/076994 Ceased WO2013098357A2 (en) 2011-12-28 2012-12-27 Calibration of a charge-to-digital timer

Country Status (2)

Country Link
EP (1) EP2798415A2 (en)
WO (2) WO2013098357A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884780B (en) * 2016-09-30 2021-03-26 比亚迪股份有限公司 Distance measuring method, laser radar and vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2224759A1 (en) * 1973-04-05 1974-10-31 Onera (Off Nat Aerospatiale) Period to voltage convertor for testing FM units - displays dots rising or falling with period
DE3834938C1 (en) * 1988-10-13 1989-12-07 Horst Prof. Dipl.-Phys. Dr. 4790 Paderborn De Ziegler
EP2388923A1 (en) * 2010-05-21 2011-11-23 Stichting IMEC Nederland Asynchronous digital slope analog-to-digital converter and method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8098085B2 (en) * 2009-03-30 2012-01-17 Qualcomm Incorporated Time-to-digital converter (TDC) with improved resolution

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2224759A1 (en) * 1973-04-05 1974-10-31 Onera (Off Nat Aerospatiale) Period to voltage convertor for testing FM units - displays dots rising or falling with period
DE3834938C1 (en) * 1988-10-13 1989-12-07 Horst Prof. Dipl.-Phys. Dr. 4790 Paderborn De Ziegler
EP2388923A1 (en) * 2010-05-21 2011-11-23 Stichting IMEC Nederland Asynchronous digital slope analog-to-digital converter and method thereof

Also Published As

Publication number Publication date
WO2013098359A2 (en) 2013-07-04
WO2013098357A3 (en) 2013-08-22
WO2013098357A2 (en) 2013-07-04
EP2798415A2 (en) 2014-11-05

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