WO2002001321A3 - Method of calibrating the physical pixel size of a display monitor - Google Patents

Method of calibrating the physical pixel size of a display monitor Download PDF

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Publication number
WO2002001321A3
WO2002001321A3 PCT/US2001/020436 US0120436W WO0201321A3 WO 2002001321 A3 WO2002001321 A3 WO 2002001321A3 US 0120436 W US0120436 W US 0120436W WO 0201321 A3 WO0201321 A3 WO 0201321A3
Authority
WO
WIPO (PCT)
Prior art keywords
pixel size
physical
calibrating
external object
display monitor
Prior art date
Application number
PCT/US2001/020436
Other languages
French (fr)
Other versions
WO2002001321A2 (en
Inventor
Kiesel Richard
K Maloney Robert
Rubin David
Original Assignee
Visionrx 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 Visionrx Inc filed Critical Visionrx Inc
Publication of WO2002001321A2 publication Critical patent/WO2002001321A2/en
Publication of WO2002001321A3 publication Critical patent/WO2002001321A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network

Abstract

The present invention is a method for calibrating the physical pixel size of a display monitor (152). The physical pixel size calibration is based on the pixel size of a calibration window (170) with respect to an external object of known dimensions provided by the user, such as a 3.5' diskette, CD jewel case or dollar bill. In the preferred embodiment, the user holds a selected external object up against the calibration window, and then resizes the calibration window to the physical size of the external object. Physical pixel size is calculated on the basis of the known physical dimensions of the external object, and the pixel size coordinates of the boundaries of the resized calibration window.
PCT/US2001/020436 2000-06-27 2001-06-27 Method of calibrating the physical pixel size of a display monitor WO2002001321A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60421000A 2000-06-27 2000-06-27
US09/604,210 2000-06-27

Publications (2)

Publication Number Publication Date
WO2002001321A2 WO2002001321A2 (en) 2002-01-03
WO2002001321A3 true WO2002001321A3 (en) 2002-07-04

Family

ID=24418646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/020436 WO2002001321A2 (en) 2000-06-27 2001-06-27 Method of calibrating the physical pixel size of a display monitor

Country Status (1)

Country Link
WO (1) WO2002001321A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0711738D0 (en) 2007-06-18 2007-07-25 Visicomp Res Linmited Vision testing apparatus & method
US20130069947A1 (en) * 2011-09-20 2013-03-21 International Business Machines Corporation Calculating display settings and accurately rendering an object on a display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751283A (en) * 1996-07-17 1998-05-12 Microsoft Corporation Resizing a window and an object on a display screen
US5898419A (en) * 1995-05-03 1999-04-27 International Business Machines Corp. Method and apparatus for scaling a cursor on local computer to have the same size relative to a window on the local computer as another cursor has to another window on a remote computer
US6111573A (en) * 1997-02-14 2000-08-29 Velocity.Com, Inc. Device independent window and view system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5898419A (en) * 1995-05-03 1999-04-27 International Business Machines Corp. Method and apparatus for scaling a cursor on local computer to have the same size relative to a window on the local computer as another cursor has to another window on a remote computer
US5751283A (en) * 1996-07-17 1998-05-12 Microsoft Corporation Resizing a window and an object on a display screen
US6111573A (en) * 1997-02-14 2000-08-29 Velocity.Com, Inc. Device independent window and view system

Also Published As

Publication number Publication date
WO2002001321A2 (en) 2002-01-03

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