JPH0516781Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an enlargement system that enlarges and displays characters and figures displayed by printing newspaper articles, etc., or characters written by the person himself/herself. This invention relates to display devices.

[Conventional technology]

2. Description of the Related Art Conventionally, devices have been known that enlarge and display characters on a document that people with low vision or tactile readers want to read on a television screen.

A known device displays an enlarged display screen such as a television set on a small table-like mount, and a reading means such as a small television camera including an optical system for magnifying the read image is provided on the underside of the television on the mount. The screen and the reading device are integrally formed. The user places a document to be read under the reading device, and moves the document relative to a television camera, which is a reading means, to read characters, etc. that are enlarged and displayed on the screen of the television. In addition to reading, this device can of course also be used as an enlarged display device for characters to be written and the like.

This conventional device lacks transportability because the reading device and display device are integrated, and since the reading device is fixed, it is necessary to move the document side, and the document is heavy, such as a large dictionary. Considering that there are practical problems such as difficulty in using large objects, the inventors of this invention separated the reading device from the display device, and further developed a method that separated the reading device from the display device. , previously proposed an enlarged display device that is divided into a photo-electric conversion type reading section and a controller, and the reading section and the controller are miniaturized so that they can be easily carried.

The previously proposed magnifying display device has a photo-electrical conversion reading unit that houses an optical system such as an optical path reversing prism, a magnifying lens, an aperture, an image sensor, and an illumination bulb in a body, and a code is attached to this reading unit. a controller connected via a power supply circuit in the reading section and a control circuit for controlling the conversion of the output from the image sensor into an image output; and a display on a television or the like that can be freely connected to and separated from the controller via a cord. It consists of two parts.

[The problem that the idea aims to solve]

The previously proposed magnifying display device separates the display section and reading section, making it convenient to carry, and the magnifying display function is sufficient, but there are still some aspects in which the usability of the reading section is not sufficient. I understand.

In view of this point, the present invention has been made with the object of improving the operability of the reading section in a magnifying display device of the type in which the display section and the reading section are separably separated.

[Means to solve the problem]

The configuration of the present invention, which was made to solve the above problems, includes a photo-electrical conversion reading unit which includes an optical system such as an optical path reversing prism, a magnifying lens, an aperture, an image sensor, and an illumination bulb housed in a body; A controller is connected to the reading section via a cord and has a power supply circuit in the reading section and a control circuit for controlling the conversion of the output from the image sensor to an image output; In a magnifying display device consisting of a display unit such as a television set, a concave or convex portion that can be confirmed by touching with a fingertip a portion corresponding to the optical path reversing prism on the front upper surface of the body in which the optical system is housed; The device is characterized in that a portion is formed as an index of a display portion to be enlarged, and an operation portion such as the aperture is provided on a side surface of the body.

[Function] A concave depression, etc., provided on the upper surface of the front part of the body as an indicator of the display area to be enlarged is located at the area that is touched by the pad of the second finger when the user grasps the body. Yes, it is easy to specify the position of the display you want to enlarge.

In addition, since the operating section such as the aperture is provided on the side of the body, it can be operated with the thumb (first finger) while being held in order to enlarge and display the main body of the reading section.

〔Example〕

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

Fig. 1 is an overall functional block diagram of an example of the device of the present invention, Fig. 2 (a) is a structural diagram of the reading section seen from the plane side, Fig. 2 (b) is also a side sectional view of the reading section, and Fig. 3 is a Fig. 2B is a sectional view taken along the - line, Figs. FIG. 6 is a side view showing the position, FIG. 6 is a perspective view showing the external appearance of the reading unit body in the present invention, and FIG. 7 is a side view showing the case where the reading unit in the present invention is installed on an example of a stand.

In Fig. 1, 1 is a reading section that optically reads and enlarges the characters, etc. on a document, and converts them into electrical signals; 2 is a reading section that transmits the electrical signals from the reading section through a connecting cable C ₁ ; a video signal generation path 21 that inputs the input signal and forms it into a video signal; an inversion circuit 22 that inverts the video signal of this circuit 21 into positive and negative signals using a changeover switch 22a; and a VHF
or a controller 3 comprising an output section 23 having an RF modulator 23a for UHF output in parallel;
is a television connected to the output section 23 of the controller 2 via the cord _C2 , and the above inverting circuit 2
A monitor television 31 is connected to the terminal 23b for composite output via the RF modulator 23a, and a television 32 for general home use is connected to the terminal 23c for output via the RF modulator 23a. 24 is a power supply section provided in the controller 2;
Reference numeral a designates the plug, from which power for the reading section 1 is also supplied. Incidentally, in the above, the video signal generation circuit 21 may be built inside the reading section 1. When this circuit 21 is installed in the reading section 1, wireless connection between the controller 2 and the reading section 1 becomes possible.

The reading section 1 shown in the figure has an optical system shown in FIGS. 2 to 5 disposed in a box-shaped body 11 (see FIG. 6) with a shallow bottom that can fit in the palm of a person. It is formed by

In Figures 2 to 5, 12 is the body 11 mentioned above.
The reading window formed at the front of the bottom surface, 13 is the window 1
An optical path changing prism 14 is placed directly above the prism 2, and 14 is a light source for illumination placed on both sides of this prism.
The light bulbs (see Figure 3), 15 and 16 are lens groups constituting magnifying lenses, and as shown in Figure 4 A and B, they move in conjunction on the reflected optical axis of the prism 13 to change the zoom. It is arranged to double.

In this embodiment, the lens groups 15, 1
Reference numeral 6 denotes a variable power lever 20 arranged on the side of the body 11.
By the sliding operation, the lens barrel T is moved through the connecting mechanisms 20l ₁ to 20l ₅ to change the zoom magnification.

Reference numeral 17 denotes a diaphragm disposed behind the magnifying lenses 15 and 16 on the reflection optical axis of the prism 13 inside the body 11. There is. Reference numeral 18 denotes a solid-state image pickup device, which uses a MOS type as an example, and is disposed behind the aperture 17, and the output of this device becomes a read signal.
Note that the video signal generation circuit 21 in the controller 2
When this circuit 21 is installed in the reading section 1, this circuit 21 is connected to the above-mentioned element 18 within the body 11, and the output of this circuit 21 becomes a read signal.

Reference numeral 19 denotes a depression as an example of a concave portion formed on the upper surface of the body 11 near the front, corresponding to the incident optical axis of the prism 13, and the document N is read directly below this depression 19. This is to show that. A convex portion may be formed instead of this depression. In short, it is sufficient to be able to tactilely confirm the position of a person's finger by touching it.

Reference numeral 41 denotes flexible balls provided at the four corners of the lower surface of the body 11, which act as rolling members when the body 11, which constitutes the main body of the reading section 1 in the device of the present invention, is slid in any direction relative to the document surface. Instead of the ball 41, a roller (not shown) may be provided horizontally or vertically with respect to the body 11. The horizontal rollers are suitable for reading and moving vertically written originals, and the vertical rollers are suitable for reading and moving horizontally written originals. , it is possible to cope with the reading movement of documents written vertically and horizontally, so there is no practical problem.

Reference numeral 42 denotes a screw hole provided at the rear of the lower surface of the body 11, into which a fixing screw 6 is screwed when the body 11 is mounted on a stand S, which will be described later.

The device of the present invention configured as described above is capable of handling a document N.
Place the body 11 of the reading section 1 on top of the reading section, and move the body 11 along the part you want to read using the depression 19 as an index.
As you move the , the letters etc. on the document N will become light bulb 1.
4 and is projected onto an image pickup device 18 through a prism 13, a magnifying lens 15 or 16, and an aperture 17.

The image sensor 18 converts characters and the like projected through the diaphragm 17 into electrical signals to provide read signals, which are then supplied to the controller ₂ via the cable C1.

In the controller 2, a read signal from the image sensor 18 is formed into a video signal in a video signal generation circuit 21, and this signal is transmitted to a monitor television 31 or a monitor connected to the controller 2, with or without passing through an inversion circuit 22. It is supplied to a general home television 32 via cable _C2 . As a result, on the television 31 or 32, the characters and the like on the document N read by the reading section 1 are sequentially enlarged and displayed. In addition, from controller 2 to television 3
Of course, the transmission and reception of signals to and from the device 2 can be done in a so-called wireless manner.

The above embodiment describes the enlarged display function for reading characters etc. on the document N.
When the body 11 of the reading unit 1 is mounted on a stand S as shown in FIG. 7, the device of the present invention can not only read a document but also write characters etc. on a document paper etc. by the user of the device on the television 31 or 32. It can be enlarged and displayed.

In FIG. 7, 51 is a base member having an abbreviated planar shape, 52 is a column member erected behind the base member 4, and 53 is a body 11 provided overhanging the top of the column member 5 forward. 6 is a body fixing screw provided in the mounting seat 53 at a position corresponding to the screw hole 42 on the bottom surface of the body 11, and 6a is an operating knob thereof.

Reference numeral 7 denotes this stand S which is arranged in the support member 5 so that its optical axis is directed near the intersection of the incident optical axis of the prism 13 of the attached body 11 and the document N.
, the plug 7b of the power cord 7a
is inserted into a socket (not shown) provided in the body 11, thereby switching the power circuit of the light source bulb 14 in the body 11 to the light source 7 side. Reference numeral 8 denotes a lens barrel of an objective lens provided on the body mounting seat 6. In addition, the shape of the stand S,
The structure is not limited to that shown in FIG. In short, it is sufficient if the body of the reading section 1 can be held at a required height and the document N etc. can be enlarged under it.

[Effect of idea]

The present invention is as described above, and the enlarged display device, which was conventionally integrated with a display device such as a television and could not be carried, is separated into a reading section, a controller, and a display section. It is small enough to fit in the palm of your hand and has a structure that allows it to be connected to the controller with or without a cord, so you can carry the controller and this reader with you and use it anytime wherever there is a television. In addition to being usable as a magnifying display device, it also has the following special effects.

That is, a depression or a protrusion is provided on the top surface of the body as an index of the document to be read, and the user can determine the reading position on the document by touching the index formed by the depression or the like with the tip of the second finger while grasping the body. can be easily determined. Moreover, even when the user is holding the body in this state, the knobs and levers for operating the aperture and magnification are provided on the side of the body, so these operations can be performed using the thumb (first finger). Since the parts can be operated, there is no need to lift the body from the document surface to perform these operations, which is the case with conventional products.

Furthermore, the body of the reading section of the device of the present invention can be mounted on a stand to enlarge the characters you write, so it can be used not only as an enlarged display device for reading but also as an enlarged display for dictation. It is convenient because it can also be used as a device. Moreover, since the stand in this case is provided with a separate illumination light source, it is extremely useful for use.

[Brief explanation of the drawing]

Fig. 1 is an overall functional block diagram of an example of the device of the present invention, Fig. 2 (a) is a structural diagram of the reading section seen from the plane side, Fig. 2 (b) is also a side sectional view of the reading section, and Fig. 3 is a Fig. 2(b) is an end view taken along the line ``-'', Figs. 4(a) and 4(b) are plan views each showing an example of the optical system of the reading section, and Fig. 5 is a variable magnification of the lenses 15 and 16 in the optical system of Fig. 4. FIG. 6 is a side view showing the position, FIG. 6 is a perspective view showing the external appearance of the reading unit body in the present invention, and FIG. 7 is a side view showing the case where the reading unit in the present invention is installed on an example of a stand. 1... Reading section, 11... Body, 12...
Window, 13... Prism, 14... Light bulb, 15,1
6... Magnifying lens, 17... Aperture, 17a... Aperture lever, 18... Imaging element, 19... Recess, 2
0...Magnification variable lever, 41...Rolling ball, 2...
Controller, 3...display section.

Claims (1)

[Claims for Utility Model Registration] 1. An optical-to-electrical conversion reading unit that includes an optical system such as an optical path reversing prism, a magnifying lens, an aperture, an image sensor, and an illumination bulb housed in a body, and a code attached to this reading unit. a controller connected via a power supply circuit in the reading section and a control circuit for controlling the conversion of the output from the image sensor into an image output; and a display on a television or the like that can be freely connected to and separated from the controller via a cord. In a magnifying display device consisting of a part, a display is desired in which a concave or convex part, which can be confirmed by touching with a fingertip a part of the front upper surface of the body in which the optical system is housed and which corresponds to the optical path reversing prism, is enlarged. What is claimed is: 1. A magnifying display device, characterized in that it is formed as an indicator of a region, and an operating section such as the aperture is provided on a side surface of the body. 2. The magnifying display device according to claim 1, wherein the operating parts such as the aperture are provided on both sides of the body. 3. By setting this body in a stand equipped with its own lighting system, the power circuit of the lighting bulb installed in the body can be switched to function as the power circuit for the lighting system of the stand. 3. An enlarged display device according to claim 1 or 2.