US20100026855A1 - Portable Multi Position Magnifier Camera - Google Patents

Portable Multi Position Magnifier Camera Download PDF

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Publication number
US20100026855A1
US20100026855A1 US12235207 US23520708A US20100026855A1 US 20100026855 A1 US20100026855 A1 US 20100026855A1 US 12235207 US12235207 US 12235207 US 23520708 A US23520708 A US 23520708A US 20100026855 A1 US20100026855 A1 US 20100026855A1
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Prior art keywords
mode
camera
object
display
viewed
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.)
Abandoned
Application number
US12235207
Inventor
Todd Conard
Brad Davis
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Freedom Scientific Inc
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Freedom Scientific Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/2251Constructional details
    • H04N5/2252Housings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • H04N1/19594Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays using a television camera or a still video camera
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/2256Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles provided with illuminating means
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/043Viewing the scanned area
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0436Scanning a picture-bearing surface lying face up on a support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/045Mounting the scanning elements in a collapsible or foldable structure, e.g. for ease of transportation

Abstract

Disclosed is a portable magnifier camera that can be selectively positioned into a variety of configurations. At least four distinct viewing configurations are provided: a reading mode wherein the camera rests flatly upon the viewed object; a writing mode wherein the camera rests at an angle upon the viewed object; a hand-held mode wherein the user holds the camera relative to a distant object; and an inspection mode wherein the user holds the viewed object relative to the camera. These configurations enable a user to effectively view objects of differing size and at varying distances.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application claims benefit of co-pending application Ser. No. 61/085,966 filed on Aug. 4, 2008 and entitled “Portable Multi Position Magnifier Camera.” The contents of this application are incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • [0002]
    1. Field of the Invention
  • [0003]
    This invention relates to a magnification device for individuals with low vision. More particularly, the present invention relates to a portable magnification device that has a variety of discrete configurations.
  • [0004]
    2. Description of the Background Art
  • [0005]
    The use of portable magnifiers for low vision users is known in the art. To date, however, these magnifiers have been heavy, bulky, and cumbersome to use. Additionally, many of these magnifiers have only one mode of operation, a mode that requires the user to hold the device at a fixed distance above the object being viewed.
  • [0006]
    Additionally, many magnifiers that are designed to be placed upon the object to be viewed typically leave little or no room over top of the object. This prohibits the user from interacting with the object being viewed. For instance, if the object is a document, a user cannot write upon the document while it is being magnified.
  • [0007]
    What is needed, then, is a magnifier with multiple configurations and modes of operation, whereby a user can use the magnifier by either holding the device over the object or by placing the device upon the object. There is an additional need for a magnifier that allows users to interact with the object while it is being magnified. There is also a need in the art for a portable magnifier that has a compact closed orientation that protects the magnifier when it is not in use. The portable multi position magnifier camera of the present invention is directed at fulfilling these needs.
  • SUMMARY OF THE INVENTION
  • [0008]
    It is therefore one of the objectives of this invention to allow a user to configure a magnifier camera into one of a variety of viewing modes so as to optimize the viewing of different sized objects at differing distances.
  • [0009]
    It is another objective of this invention to provide a magnifier camera that can either be held over an object to be viewed or positioned upon the object to be viewed.
  • [0010]
    It is a further object of this invention to provide a magnifier camera that can be positioned upon an object to be viewed, while at the same time providing a clearance space to permit the user to interact with the object.
  • [0011]
    It is yet another objective of this invention to provide a magnifier camera that has a closed orientation that is compact and readily transportable and which protects the components of the camera.
  • [0012]
    Another object of this invention is to provide a rheostat-type controller for increasing functionality and ease of use.
  • [0013]
    The foregoing has outlined rather broadly the more pertinent and important features of the present invention in order that the detailed description of the invention that follows may be better understood so that the present contribution to the art can be more fully appreciated. Additional features of the invention will be described hereinafter which form the subject of the claims of the invention. It should be appreciated by those skilled in the art that the conception and the specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0014]
    For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
  • [0015]
    FIG. 1 is a perspective view of the magnifier camera of the present invention in a reading mode whereby the magnifier is placed upon an object to be viewed.
  • [0016]
    FIG. 2 a is a perspective view of the magnifier camera being reconfigured from a reading mode to a closed configuration.
  • [0017]
    FIG. 2 b is an additional perspective view of the magnifier camera being reconfigured from a reading mode to a closed configuration.
  • [0018]
    FIG. 2 c is a perspective view of the magnifier camera in the closed configuration.
  • [0019]
    FIG. 3 is a detailed view of the underside of the magnifier camera showing the camera and associated mirror.
  • [0020]
    FIG. 4 is an exploded view of the lighting chamber of the present invention.
  • [0021]
    FIG. 5 is a diagram showing how lighting is distributed within the lighting chamber of the present invention.
  • [0022]
    FIG. 6 is a perspective view of the magnifier camera in the writing stand mode.
  • [0023]
    FIG. 7 is a perspective view of the magnifier camera in the handheld mode.
  • [0024]
    FIG. 8 is a perspective view of the magnifier camera in the inspection mode of operation.
  • [0025]
    FIG. 9 is a perspective view of the magnifier camera in the inspection mode of operation.
  • [0026]
    Similar reference characters refer to similar parts throughout the several views of the drawings.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • [0027]
    The present invention relates to portable magnifier camera that can be selectively positioned into a variety of configurations. At least four distinct viewing configurations are provided: a reading mode wherein the camera rests flatly upon the viewed object; a writing mode wherein the camera rests at an angle upon the viewed object; a hand-held mode wherein the user holds the camera relative to a distant object; and an inspection mode wherein the user holds the viewed object in close proximity to the camera. These configurations enable a user to effectively view objects of differing size and at varying distances.
  • [0028]
    The camera 10 of the present invention is depicted in FIG. 1. The camera 10 includes four housing components that are pivotally interconnected in a manner that provides for multiple discrete configurations. These housing components include a cover 20, a control panel 30, a camera housing 40, and a base 60. These components are preferably constructed from a lightweight impact resistant plastic. An acrylonitrile butadiene styrene (ABS) plastic, or the equivalent, is preferred.
  • [0029]
    Cover 20 includes an LCD screen 22 that is positioned within its interior face. The inner surface also includes opposing indentations 24 that permit screen 22 to be easily gripped and manipulated by the user. The exterior face of cover 22 serves to protect the various components of camera 10 when it is in a closed configuration (note FIG. 2 c). Screen 22 is preferably a full color video graphics array (VGA) display. The input to the LCD screen 22 comes from a field programmable gate array (FPGA) that resides within camera housing 40. In the preferred embodiment, low-voltage differential signaling (LVDS) is employed in interconnecting FPGA to LCD screen 22. This renders a purely digital output on screen 22 and also permits camera 10 to be used in conjunction with an external monitor (not shown).
  • [0030]
    Cover 20 is pivotally interconnected to a control panel 30. Control panel 30 includes a centrally located slider 32 as well as adjacent touch sensitive controls 34 and 36. Slider 32 provides for the variable control of one or more camera functions. The variable control can be accomplished via a variable resistor, such as a rheostat, potentiometer, or like equivalents. Control 34 can be used to take “snap shots” of the object being viewed. These static images can be stored in a memory for later viewing. Control 36 can be used to cycle through the modes controlled by slider 32.
  • [0031]
    In one mode, slider 32 is used to vary the camera magnification. For instance, by moving slider to the right (as noted in FIG. 1) a user can change the magnification continuously from 3.5× to 14×. In another mode, slider 32 is used to change the color combinations of screen 22. Namely, in order to enhance viewing for low vision users, LCD screen 22 can display the object being viewed in various color combinations, such as blue/green, red/yellow or black/white. Thus, slider 32 can be used to cycle through the various color combinations to find the most effective output for the user. This feature can be used in conjunction with both live camera views as well as static images that have been stored within the camera's memory. In either case, slider 32 has the advantage of permitting the user to easily cycle through a variety of color options.
  • [0032]
    Slider 32 can also be used to navigate through a static or live camera image. For instance, in one mode, movement of the slider shifts the image from right to left. In another mode, movement of the slider shifts the image up and down. Both the vertical and horizontal navigation modes can be used in conjunction with the magnification mode to allow the user to zoom into any portion of the image.
  • [0033]
    As noted in FIGS. 2 a-2 c, camera housing 40 is pivotally connected to control panel 30. Thus, in effect, control panel 30 serves as a hinge between cover 20 and housing 40. With reference to FIG. 1, it will be noted that housing 40 includes an output 52 for coupling camera 10 to an external monitor or television. A power button 50 is also included on the opposite side of housing 40 (note FIG. 3). The device can further be configured to power itself off when in the closed configuration (FIG. 2 c).
  • [0034]
    The optical components associated with camera 10 are stored within a chamber 42 positioned within camera housing 40. As noted in FIGS. 3 and 4, these optical components include a sensor 44, a mirror 46 (which is positioned on an angled surface within the chamber), a light source 48, light guides 54, and an optical lens 56. Chamber 42 preferably includes a rounded or curved interior surface that is lightly colored so as to promote reflection. Light source 48 is preferably two rows of light emitting diodes (LEDs) that are mounted to vertical surfaces within the chamber 42. Other light sources, such as cold cathode fluorescent lamps (CCFL), can be used in conjunction with the invention. Still yet other light sources will be readily identified by those skilled in the art. Light guides are used in directing the light from the LEDs both towards the viewed object and to the interior of chamber 42. A suitable light guide is described in commonly owned U.S. Pat. No. 7,172,304 to Rodriguez et al., the contents of which are fully incorporated herein. Sensor 44 is preferably a 3 megapixel CMOS image sensor. Such sensors are commercially available and those of ordinary skill in the art will appreciate suitable equivalents thereto. The output of the image sensor is provided to the FPGA and to an image buffer.
  • [0035]
    In use, chamber 42 is either placed over an image plane or otherwise pointed towards the object to be viewed. The image of the viewed object is then picked up by mirror 46. Sensor 44 and lens 56 are positioned within chamber 42 so as to record the image reflected by mirror 46. However, the use of other configurations is within the scope of the present invention. Alignment guides 53 are included on the sides of the housing to assist blind or low vision users in properly orienting the chamber 42 relative to the object to be viewed.
  • [0036]
    The light provided to light guides is also adjustable to permit the selective control of direct and indirect light provided to the object being viewed. Namely, for near objects, such as those viewed in the reading mode, the light from guides 54 is directed into the interior of chamber 42, thereby increasing the amount of indirect lighting used. This is accomplished by directing more light through the upper surfaces 54 a of light guides 54. The resulting indirect lighting is preferred for closely positioned objects. By contrast, in the writing and handheld modes, the light will be primarily directed through the lower surface 54 b of light guides 54. As noted in FIG. 5, lower surfaces 54 b are generally parallel to the image plane while upper surfaces 54 a are angled with respect to the image plane. This results in distant objects being illuminated with more direct lighting, which is preferred in such situations.
  • [0037]
    The various configurations of camera 10 are described next. These configurations are achieved by pivotally interconnecting housing 40 to both control panel 30 and to base 60. More specifically, the forward end of housing 40 is connected to control panel 30 while the rearward end is connected to base 60. However, in the preferred embodiment, the connection between base 60 and housing 40 permits only a limited degree of angular adjustment. Base 60 is preferably formed from two opposing feet 60 a and 60 b (note FIG. 6). A clearance space 62 is provided between feet 60 a and 60 b so as to permit an unobstructed view of objects by camera 44. Additional clearance space can be created by pivoting housing 40 relative to base 60 as noted more fully hereinafter. A power supply (not shown) is preferably stored within one or both feet 60 a and 60 b. The power supply can be, for example, a re-chargeable lithium ion battery.
  • Reading Mode
  • [0038]
    The reading mode is depicted in FIG. 1. In this mode, base 60 rests upon the object being viewed. Both cover 20 and control panel 30 can be angled for optimal viewing by the user. This is the preferred mode for viewing flat objects, such as a page of text, where there is no need for the user to interact with the viewed object. Light guides 54 can be adjusted while in the reading mode to provide more indirect light. Indirect lighting is preferred in the reading mode due to sensor 44 being closer to the viewed object.
  • Writing Mode
  • [0039]
    In the event the user needs to interact with the viewed object, the writing mode is preferred. The writing mode is illustrated in FIG. 6. In this mode, base 60 again rests upon the object being viewed. However, unlike the reading mode, base 40 is pivoted slightly with respect to base 60. In the preferred embodiment, this angle is no more than 45 degrees. By pivoting base 40 upwardly, a space 62 is created. Space 62 allows a user to, for instance, write upon the object being viewed. This mode can be used, for example, if the user wishes to sign a document or fill out a check. The light guides 54 can be adjusted while in the writing mode to provide more direct light. Direct lighting is preferred in the writing mode due to sensor 44 being further away from the viewed object.
  • Hand-Held Mode
  • [0040]
    The hand-held mode is depicted in FIG. 7. Here, cover 20 is pivoted such that its exterior surface contacts base 40. Additionally, instead of base 60 resting upon the object to be viewed, feet 60 a and 60 b of base are grasped by the user. The permits camera 10 to be picked up and pointed at distant objects. During this viewing, control 34 can be used to take static images of the object “O” being viewed.
  • Inspection Mode
  • [0041]
    Finally, the inspection mode of camera 10 is illustrated in FIGS. 8 and 9. In this mode, base 60 is pivoted so that the chamber 42 is pointing towards the user. The allows the user to hold objects “O” in front of the camera for inspection. As noted by FIGS. 8 and 9, LCD screen 22 can be positioned in differing orientations while in the inspection mode.
  • [0042]
    The present disclosure includes that contained in the appended claims, as well as that of the foregoing description. Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention.

Claims (14)

  1. 1. A display device comprising:
    a display screen;
    a control panel for controlling images displayed on the display screen, the control panel including a sliding control and a function key for cycling through a number of different display modes;
    the display device including a first display mode wherein the sliding controller is used to change the color scheme of the displayed image, the display device including a second display mode wherein the sliding controller is used to position the image within the display, and the display device including a third display mode wherein the sliding controller is used to enlarge the image.
  2. 2. A display device comprising:
    a display screen;
    a control panel for controlling images displayed on the display screen, the control panel including a sliding control and a function key for cycling through a number of different display modes.
  3. 3. The display device as described in claim 2 wherein at least one display mode is provided and wherein the sliding controller is used to change the color scheme of the displayed image.
  4. 4. The display device as described in claim 2 wherein at least one display mode is included and wherein the sliding controller is used to position the image within the display.
  5. 5. The display device as described in claim 2 wherein at least one display mode is included and wherein the sliding controller is used to enlarge the image.
  6. 6. The display device as described in claim 2 wherein the sliding controller is a rheostat.
  7. 7. The display device as described in claim 2 wherein the sliding controller is a potentiometer.
  8. 8. The display device as described in claim 5 wherein the sliding controller provides for continuous magnification from 3.5× to 14×.
  9. 9. The display device as described in claim 3 wherein the sliding controller is used to cycle through at least two of the following color combinations: blue/green, red/yellow, or black/white.
  10. 10. The display device as described in claim 4 wherein another display mode is included and wherein the sliding controller is used to enlarge the image.
  11. 11. A magnification device comprising:
    a magnification camera;
    a display screen for displaying magnified images;
    a control panel for controlling images displayed on the display screen, the control panel being pivotally secured to the display screen, the control panel including a sliding control.
  12. 12. The magnification device as described in claim 11 wherein at least one display mode is provided and wherein the sliding controller is used to change the color scheme of the displayed image.
  13. 13. The magnification device as described in claim 11 wherein at least one display mode is included and wherein the sliding controller is used to position the image within the display.
  14. 14. The magnification device as described in claim 11 wherein at least one display mode is included and wherein the sliding controller is used to enlarge the image.
US12235207 2008-08-04 2008-09-22 Portable Multi Position Magnifier Camera Abandoned US20100026855A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US8596608 true 2008-08-04 2008-08-04
US12235207 US20100026855A1 (en) 2008-08-04 2008-09-22 Portable Multi Position Magnifier Camera

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US12235207 US20100026855A1 (en) 2008-08-04 2008-09-22 Portable Multi Position Magnifier Camera
CN 200980130886 CN102138321B (en) 2008-08-04 2009-08-03 Portable multi position magnifier camera
PCT/US2009/052543 WO2010017121A3 (en) 2008-08-04 2009-08-03 Portable multi position magnifier camera
JP2011522135A JP5600676B2 (en) 2008-08-04 2009-08-03 Portable multi-position magnifier camera
ES09805389T ES2428228T3 (en) 2008-08-04 2009-08-03 Portable camera increase in multiple positions
EP20090805389 EP2321960B1 (en) 2008-08-04 2009-08-03 Portable multi position magnifier camera

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US20100026855A1 true true US20100026855A1 (en) 2010-02-04

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US12235207 Abandoned US20100026855A1 (en) 2008-08-04 2008-09-22 Portable Multi Position Magnifier Camera
US12235240 Active 2029-12-23 US8115831B2 (en) 2008-08-04 2008-09-22 Portable multi position magnifier camera
US12235182 Active 2030-04-11 US8259222B2 (en) 2008-08-04 2008-09-22 Portable multi position magnifier camera

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US12235240 Active 2029-12-23 US8115831B2 (en) 2008-08-04 2008-09-22 Portable multi position magnifier camera
US12235182 Active 2030-04-11 US8259222B2 (en) 2008-08-04 2008-09-22 Portable multi position magnifier camera

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US (3) US20100026855A1 (en)
EP (1) EP2321960B1 (en)
JP (1) JP5600676B2 (en)
CN (1) CN102138321B (en)
ES (1) ES2428228T3 (en)
WO (1) WO2010017121A3 (en)

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US20100026854A1 (en) * 2008-08-04 2010-02-04 Rodriguez Carlos M Portable Multi Position Magnifier Camera
US20100073545A1 (en) * 2008-09-22 2010-03-25 Rodriquez Carlos M Multiposition Handheld Elecronic Magnifier
CN103258189A (en) * 2013-03-25 2013-08-21 威盛电子股份有限公司 Amplifier device, data transmission relay device and far-end protection system
WO2014014756A1 (en) * 2012-07-20 2014-01-23 Freedom Scientific, Inc. Multiposition magnifier camera
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JP5891991B2 (en) * 2012-07-31 2016-03-23 富士通株式会社 Electronic apparatus using the hinge device and said hinge device
US8913138B2 (en) 2012-12-21 2014-12-16 Technologies Humanware Inc. Handheld magnification device with a two-camera module
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US9377922B2 (en) * 2012-12-26 2016-06-28 Verizon Patent And Licensing Inc. Aiding people with impairments
NL2010302C (en) * 2013-02-14 2014-08-18 Optelec Dev B V A system for determining a recommended magnification factor for a magnifier such as a loupe or an electronic magnifier to be used by a person.
USD760611S1 (en) * 2013-06-05 2016-07-05 Kone Corporation Control panel
US9832367B2 (en) * 2013-12-31 2017-11-28 Optelec Holding B.V. Viewing device
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US20100026854A1 (en) 2010-02-04 application
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US20100027237A1 (en) 2010-02-04 application
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