JP2525948Y2 - Magnifying display for low vision people - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to an enlarged display device for enlarging and displaying characters and figures of newspaper articles and the like, or characters written by the person himself. .

[Conventional technology]

2. Description of the Related Art Conventionally, there is an apparatus that enlarges and displays a character or the like of a manuscript to be read for a visually impaired person or a tactile reader on a television screen.

In the conventional apparatus, an enlarged display screen by a television or the like is provided on a small table-like base, and reading means by a small TV camera or the like including an optical system for magnifying a read image is provided on the lower surface of the television of the base. And the reading device are integrally formed, the user places a document to be read under the reading device and moves the document with respect to the television camera of the reading means while enlarging the document on a television screen. The displayed characters and the like are read.

However, in the conventional apparatus, the reading apparatus and the display apparatus are integrated, so that the apparatus lacks transportability. Further, since the reading apparatus is fixed, it is necessary to move the original side. However, there is a practical problem that it is difficult to use a large and heavy one.

[Problems to be solved by the invention]

In view of the above, the present invention provides an apparatus which separates a reading device and a display device, and further divides the reading device into a photoelectric conversion type reading unit and a controller to reduce the size of the reading unit and the controller and to carry the device. The task is to do so.

[Means for solving the problem]

The configuration of the enlarged display device of the present invention made to solve the above-mentioned problem has an optical path changing prism, a body formed in a size that can be grasped by hand and having a reading window formed in front of the bottom surface. An optical system including a magnifying lens, an aperture, a planar image sensor, and an illumination light bulb is housed therein, and an index is provided on an incident optical axis of the window on the upper surface of the body to enlarge characters on a document. And a control circuit which is connected to the reading unit via a signal cable in the form of a connecting string, converts a reading signal supplied from the reading unit into a display signal, and sends it out. And a power supply circuit, and a display unit such as a television adapted to receive an output from the controller. Characters or the like in a range in which the window of the reading section in the moved position facing, is characterized in that so as to enlarge the display section.

[Action]

That is, in the enlarged display device of the present invention, the reading unit and the controller are separated from the display unit such as a television via a code. An arbitrary document can be enlarged and displayed on the television.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall block diagram of an example of the present invention, FIG.
FIG. 3 is a side sectional view of the reading unit, FIG. 3 is an end view taken along line III-III of FIG. 2, and FIGS. 4 (a) and 4 (b) are plan views each showing an example of an optical system of the reading unit. FIG. 5 is a side view of the optical system shown in FIG. 4, and FIG. 6 is a perspective view showing an example in which the reading unit of the present invention is slidably provided on a base.

At a first figure, 1 is expanded reading characters or the like of a document optically, reading unit for converting it into electrical signals, 2, via the connection cable C ₁ electrical signals from the reading unit is here A display signal generating circuit 21 for inputting and converting the display signal into a display signal based on a video signal, an inverting circuit 22 for inverting the display signal of the circuit 21 to positive or negative by a changeover switch 22a, and VHF or UHF controller and an output unit 23 having an RF modulator 23a for output in parallel, 3 television connected via the code C ₂ to the output 23 of the controller 2, for composite output via the inverting circuit 22 Monitor television 31 is connected to terminal 23b, and RF
An ordinary home television 32 is connected to an output terminal 23c via the modulator 23a. still,
In the figure, reference numeral 24 denotes a power supply unit provided in the controller 2, and reference numeral 24a denotes an insertion plug thereof. Further, in the above description, the display signal generation circuit 21 may be configured to be built in the reading unit 1.
When this circuit 21 is incorporated in the reading section 1, the controller 2 and the reading section 1 can be wirelessly connected.

As shown in FIG. 2, the reading unit 1 shown in FIG. 1 forms a shallow box-shaped body 11 that can be accommodated in a human palm.
It is formed by disposing the following optical system.

That is, in FIG. 2, reference numeral 12 denotes a reading window formed in front of the bottom surface of the body 11, reference numeral 13 denotes an optical path changing prism provided immediately above the window 12, and reference numeral 14 denotes an illumination light source provided on both sides of the prism. Two bulbs (see FIG. 3), 15 and 16 are two sets of magnifying lenses, 15 for high magnification and 16 for bottom magnification. As shown in FIGS. 4A and 4B, the two sets of magnifying lenses 15 and 16 are interchanged by moving the optical axes of the lenses 15 and 16 on the optical axis of the prism 13. Have been able to. Therefore, the above lens
Although not shown, 15 and 16 are respectively housed in the lens barrel and mounted in the body 11, and these lens barrels are moved on the reflected optical axis of the prism 13 by a shift lever (not shown). It is to be shifted to.

Reference numeral 17 denotes a stop disposed behind the magnifying lenses 15 and 16 on the reflection optical axis of the prism 13 in the body 11, and the stop 17 is adapted to be expanded and contracted by a stop lever 17a. Reference numeral 18 denotes a MOS-type flat image pickup element disposed in the rear of the stop 17, here, and the output of this element becomes a read signal. When the display signal generating circuit 21 in the controller 2 is incorporated in the reading section 1, it is connected to the element 18, and the output of the circuit 21 becomes a display signal.

A marker 19 is provided on the incident optical axis of the prism 13 on the upper surface of the body 11, and indicates that the document N is being read just below the marker 19.

In the device of the present invention configured as described above, the reading unit 1 is placed on the original N, and the body 11 of the reading unit 1 is moved along the portion to be read while using the marker 19 as an index. The letters and the like on the original N are illuminated by the light bulb 14 and the prism 13
The light is projected onto the flat image sensor 18 through the magnifying lens 15 or 16 and the stop 17.

The flat image sensor 18 converts the characters and the like projected through the aperture 17 into electric signals and reads them as read signals.
Supplied to the controller 2 via a C _1.

In the controller 2, a read signal from the image sensor 18 is formed into a display signal by a video signal in a display signal generation circuit 21, and this signal is connected to the controller 2 with or without an inversion circuit 22. supplied via the cable C ₂ to the monitor television 31 or general household television 32 are. As a result, in the television 31 or 32, the original N
The upper characters and the like are sequentially enlarged and displayed. It should be noted that transmission and reception of signals from the controller 2 to the television 32 can be performed in a so-called wireless system.

In the above-described embodiment, the enlarged display function for reading the characters and the like on the document N is described. However, the present invention device may be configured such that the reading unit 1 is slidably mounted on a stand as shown in FIG. In addition to reading the manuscript, it is possible to enlarge and display characters and the like written on the manuscript paper or the like by the user of the apparatus on the television 31 or 32.

In FIG. 6, reference numerals 4 and 5 denote left and right leg members in the form of a side stand, 6 and 7 denote two guide bars suspended between both leg members, and 8.
Is a connecting bar, which forms a gantry S by these 4 to 8, and the reading unit 1 is slidably mounted on the guide bars 6 and 7.

Here, as an example, a rack 6a is provided on the upper surface of the guide bar 6.
On the other hand, a motor 9 is mounted on the lower surface of the body 1 of the reading unit 1, and the output pinion (not shown) of this motor meshes with the rack 6a, so that the sliding of the reading unit 1 is output by the motor output. To do so. 9a
Is an on / off switch for the motor 9 for each running direction. Instead of the rack and pinion transmission mechanism, a transmission mechanism using a feed screw and a nut member may be used.

An objective lens 13a is mounted on the window 12 of the reading unit 1.

In this way, not only can the reading unit 1 be moved left and right on the gantry S, but also the moving speed can be freely controlled, so that the original can be moved by hand or the reading unit 1 can be moved by hand. In addition to being able to read characters and the like on the original without moving the original, there is a space between the original surface and the reading unit 1 and the reading unit 1 can be moved in an arbitrary direction, so that it can be used. The user can write characters and the like while looking at the enlarged display on the display unit.

Note that the shape and structure of the gantry S are not limited to those in the above example. If necessary, any structure that holds the reading unit 1 at a predetermined height and allows the reading unit 1 to move either left, right, up, or down is sufficient.

[Effect of the invention]

The present invention is as described above, and is conventionally integrated with a display device such as a television, and an enlarged display device for low vision people who could not be carried is separated into a reading unit, a controller, and a display unit, In particular, since the reading section is formed in a size small enough to fit in the palm of the hand and can be connected to the controller, the controller and the reading section are carried, and whenever the television is located, the reading section can be lowered. There is an extraordinary effect that it can be used as an enlarged display device for the eyesight.

In addition, the reading section of the device of the present invention can display its own characters in an enlarged manner by mounting it on a gantry and moving the gantry on the gantry. It can also be used as a device, and is convenient as an enlarged display device for people with low vision.

[Brief description of the drawings]

FIG. 1 is an overall block diagram of an example of the present invention, FIG. 2 is a side sectional view of a reading unit, FIG. 3 is an end view taken along the line III-III of FIG. 2, FIG. (B) is a plan view showing an example of the optical system of the reading unit, FIG. 5 is a side view of the optical system of FIG. 4, and FIG. 6 is a case where the reading unit of the present invention is slidably provided on a stand. It is a perspective view which shows an example. 1 reading unit, 11 body, 12 window, 13 prism, 14 light bulb, 15, 16 magnifying lens, 17 diaphragm, 18 plane image sensor, 19 marker 2, a controller, a display unit,

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koichi Okada 6-11-5 Tokumaru, Itabashi-ku, Tokyo (72) Inventor Sanyo Nagayama 2-362-8 Hyuga Wada, Ome-shi (56) References JP-A-60-1985 244150 (JP, A) JP-A-61-251356 (JP, A) JP-A-56-35278 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A body having a size that can be gripped by hand and a reading window formed in the front of the bottom surface.
An optical system including an optical path changing prism, a magnifying lens, an aperture, a planar image sensor, and an illumination light bulb is housed therein, and an index is provided on an incident optical axis of the window on an upper surface of the body, and a character on a document is provided. A handy-type photoelectric conversion reading section for reading in an enlarged manner, and a reading signal supplied from the reading section which is connected to the reading section via a signal cable in the form of a connecting string and converted into a display signal. A controller having a control circuit and a power supply circuit for sending, and a display unit such as a television adapted to receive an output from the controller, wherein the index is moved at a position on the read original as a guide. An enlarged display device for low vision persons, wherein characters and the like in a range where a window of a reading unit faces are enlarged and displayed on the display unit.