WO1999057601A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO1999057601A1
WO1999057601A1 PCT/AU1999/000336 AU9900336W WO9957601A1 WO 1999057601 A1 WO1999057601 A1 WO 1999057601A1 AU 9900336 W AU9900336 W AU 9900336W WO 9957601 A1 WO9957601 A1 WO 9957601A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensing means
human
sensed
light source
display screen
Prior art date
Application number
PCT/AU1999/000336
Other languages
English (en)
Inventor
Alexander Virr
Mark Alexander Abourizk
Original Assignee
Resmed Limited
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 Resmed Limited filed Critical Resmed Limited
Priority to AU35892/99A priority Critical patent/AU3589299A/en
Publication of WO1999057601A1 publication Critical patent/WO1999057601A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
    • A61B5/7445—Display arrangements, e.g. multiple display units
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0209—Operational features of power management adapted for power saving
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • the present invention relates to an information displaying device adapted for use in a darkened environment.
  • the invention has been developed primarily for use in the treatment of patients suffering from sleep disorders in which the treatment is affected during sleep, such as Continuous Positive Airway Pressure (CPAP) treatment of Obstructive Sleep Apnea (OS A), and will be described hereinafter with reference to this application.
  • CPAP Continuous Positive Airway Pressure
  • OS A Obstructive Sleep Apnea
  • OS A Obstructive Sleep Apnea
  • LCD liquid crystal display
  • Many medical devices include a display screen, for example a liquid crystal display (LCD) screen, which displays information pertaining to the operation of the device.
  • the screen can indicate, for example, whether the machine is operating, the pressure or flow rate of substances being delivered to the patient or the patient's heart rate.
  • Display screens without a backlight suffer from the disadvantage of requiring the room lights or a torch to be illuminated to check the operating state of the device which can disturb the patients sleep.
  • Display screens with a continuously illuminated backlight emit a constant glow or glare that can disturb the patient's sleep.
  • the present invention provides an information displaying device adapted for use in a darkened environment, the device including: a display screen for displaying information pertaining to the operation of the device; a human presence sensing means adapted to issue a control signal in response to sensing a human or part thereof substantially adjacent or nearby the sensing means; and a backlight for illuminating the display screen in response to the control signal.
  • the device is preferably a medical device used in the treatment of patients suffering from sleep disorder conditions such as for example, OS A.
  • the backlight is continuously illuminated only whilst the sensing means senses a human presence.
  • the backlight is illuminated for a predetermined period of time after the sensing means initially senses a human presence.
  • the backlight is illuminated when a human presence is sensed and remains on for predetermined time after the presence sensing means senses the removal of the initially sensed presence.
  • the presence sensing means is an infra-red motion detector.
  • an active infra-red sensor can be used which projects an infra-red beam and then looks for the beam to bounce back.
  • the presence sensing means is an ultrasonic sensor.
  • the sensing means can be a light sensor adapted to detect changes in the amount of light incident on the device or a heat sensor detecting temperature changes.
  • the present invention provides a method for displaying information in a darkened environment, the method including the steps of: displaying the information on a display screen; sensing the presence of a human adjacent or nearby the display screen and issuing a control signal indicative of same; and illuminating the display screen in response to said control signal.
  • the light source is continuously illuminated only whilst the sensing means senses a human presence.
  • the light source is illuminated for a predetermined period of time after the sensing means initially senses a human presence.
  • the light source is illuminated when a human presence is sensed and remains on for predetermined time after the presence sensing means senses the removal of the initially sensed presence.
  • the presence is sensed by detecting motion.
  • the presence is sensed by detecting sound. 3
  • the presence is sensed by detecting changes in light or temperature.
  • FIG. 1 is a schematic diagram of an embodiment of the invention.
  • FIG. 1 there is shown a schematic diagram of an information displaying device 10 according to an embodiment of the invention.
  • the device 10 is preferably used in medical treatment in a darkened environment, such as a CPAP flow generator used for treating sleeping patients, and includes a display screen 12 for displaying information pertaining to the operation of the device 10 and a backlight 14 for illuminating the display 12.
  • the backlight 14 is selectively illuminated by an ON/OFF switch 16 which receives power from an electric power supply 18.
  • the power supply 18 is generally common with that required for operation of the device 10 overall.
  • the device 10 also includes a human presence sensing means in the form of sensor 20 which, in the preferred embodiment shown, is an infra-red motion detector similar to those used in house alarms.
  • the field of view of the sensor 20 is generally indicated by lines 22 and if activated, by for example a human or a hand 26 thereof entering the field of view 22 of the sensor 20, issues a first control signal 24.
  • the first control signal 24 is supplied to a decision module 26 which generates and issues a second control signal 28 to the backlight ON/OFF switch 16 dependent on the configuration of the device 10 and previous first control signals 24.
  • the control module 26 can be configured to issue the second control signal 28 to trigger the switch 16 to ON and continually illuminate the backlight 14 in response to a continuous human presence being detected by sensor 20.
  • control module 26 can trigger the switch 16 ON to illuminate the backlight 14 for a predetermined period of time, for example 1 minute, after sensing initially human presence.
  • control module 26 can trigger the switch 16 in the ON state to leave the backlight 14 illuminated for a predetermined period of time after the sensor 20 indicates the human presence has left the field of view 22 of the sensor 20.
  • the device includes means to adjust or limit the range or field of view of the sensor. This can be achieved, for example, by the incorporation of physical baffles, the use of adjustable polarising filters or adjustable lenses or by controlling sensor gain.
  • the ability to adjust or limit the range or field of view of the sensor minimises inadvertent issuance of the control signal, and thus the illumination of the display, as might occur if the patient's movements during sleep were detected.
  • the sensor is an infrared motion detector model LHI 958, manufactured by HEIMANN.
  • the invention has several advantages over those of the prior art.
  • the device avoids continuous backlighting of the display screen and thereby minimising both patent disturbance and power usage.
  • the device does not require the person intending to view the display screen to physically touch the device the risk of inadvertently altering the operation of the device is substantially reduced.
  • the device is suitable for patients using medical treatment devices in hospital or the home whose poor state of health or physical limitation make manipulation of prior art manual switches difficult.

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Theoretical Computer Science (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Optics & Photonics (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention concerne un dispositif d'affichage (10) qui s'utilise dans la pénombre. Le dispositif (10) comprend un écran (12) sur lequel viennent s'afficher des informations en rapport avec le fonctionnement dudit dispositif, un moyen de détection de présence humaine (20) qui émet un signal de commande lorsqu'il détecte la présence en tout ou partie d'un être humain qui se trouve plus ou moins à proximité du moyen de détection (20) et une source lumineuse (14) qui éclaire l'écran en réponse au signal de commande. L'invention concerne également une technique d'affichage dans la pénombre.
PCT/AU1999/000336 1998-05-06 1999-05-06 Dispositif d'affichage WO1999057601A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35892/99A AU3589299A (en) 1998-05-06 1999-05-06 An information displaying device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP3368A AUPP336898A0 (en) 1998-05-06 1998-05-06 An information displaying device
AUPP3368 1998-05-06

Publications (1)

Publication Number Publication Date
WO1999057601A1 true WO1999057601A1 (fr) 1999-11-11

Family

ID=3807622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1999/000336 WO1999057601A1 (fr) 1998-05-06 1999-05-06 Dispositif d'affichage

Country Status (2)

Country Link
AU (1) AUPP336898A0 (fr)
WO (1) WO1999057601A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050235993A1 (en) * 2002-11-19 2005-10-27 Martin Baecke Ventilator, in particular CPAP device comprising an illumination device
US8174483B2 (en) 2008-02-20 2012-05-08 Computime, Ltd. Automatic display unit activation
WO2017053547A1 (fr) * 2015-09-25 2017-03-30 Fresenius Medical Care Holdings, Inc. Commande de mise en veilleuse automatique d'écran pour un dispositif médical
CN108235546A (zh) * 2018-02-02 2018-06-29 上海联影医疗科技有限公司 医疗设备光环境系统和医疗系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028739A1 (fr) * 1996-02-09 1997-08-14 Nellcor Puritan Bennett Incorporated Appareil de diagnostic medical a mode sommeil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028739A1 (fr) * 1996-02-09 1997-08-14 Nellcor Puritan Bennett Incorporated Appareil de diagnostic medical a mode sommeil

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN; & JP 08015668 A (KANSEI CORP) 19 January 1996. *
PATENT ABSTRACTS OF JAPAN; & JP 08211360 A (NDR : KK) 20 August 1996. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050235993A1 (en) * 2002-11-19 2005-10-27 Martin Baecke Ventilator, in particular CPAP device comprising an illumination device
US8174483B2 (en) 2008-02-20 2012-05-08 Computime, Ltd. Automatic display unit activation
WO2017053547A1 (fr) * 2015-09-25 2017-03-30 Fresenius Medical Care Holdings, Inc. Commande de mise en veilleuse automatique d'écran pour un dispositif médical
US10332482B2 (en) 2015-09-25 2019-06-25 Fresenius Medical Care Holdings, Inc. Automated display dimness control for a medical device
CN108235546A (zh) * 2018-02-02 2018-06-29 上海联影医疗科技有限公司 医疗设备光环境系统和医疗系统

Also Published As

Publication number Publication date
AUPP336898A0 (en) 1998-05-28

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