JPH0578066U - Camera head unit moving device - Google Patents

Abstract

(57) [Abstract] [Purpose] When the tip of a video camera is brought into contact with the paper surface and moved along a character string, the trajectory is stabilized and handling is facilitated. [Structure] A video camera 200 has cases 201 and 213 holding an image pickup camera and a magnifying lens arranged in the optical path of the image pickup camera, and a cylindrical rubber roller 223 is provided at the tip of the case. The camera is rotatably attached so that its axis is orthogonal to the direction in which the camera is moved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a camera head unit moving device used by a person with weak eyesight for carrying.

[0002]

[Prior Art]

 Magnifying reading devices have been developed for people with low vision. The configuration of the conventional device is such that the output of the video camera is enlarged and displayed on the television receiver, and the video camera and the television receiver are independent. For this reason, when used normally, they tend to be used personally at home.

In such a device, a video camera and a television receiver are separate bodies and are large in size, so that they cannot be carried. In addition, it is not possible to use the characters displayed by a video signal captured by one video camera on multiple display devices at different locations. However, there are various usage patterns and usage environments of the enlarged reading device, and development of an easy-to-use device is desired. For example, there is a demand for a device that is easy to use at meetings, outdoors, and in classes. People with weak eyesight use the enlarged display characters with their faces close to the screen, and it is preferable to have one display device per person. In order to solve such a demand, a portable magnifying reader using a liquid crystal display device has been developed.

[0004]

[Problems to be solved by the device]

 According to a portable magnifying reading device using a liquid crystal display device, which has been conventionally considered, an image is taken by bringing the front end of the case of a video camera close to or in contact with a book. For this reason, a member with good friction and low frictional resistance is attached to the tip of the case. However, if this is the case, moving the video camera along the character string is unstable, and if you look a little further, it may deviate from the trajectory. In particular, because it is a device that obtains a magnified display, the displayed characters will move significantly on the screen if it deviates from the side road.

In view of this, the present invention provides a camera head unit moving device that stabilizes the trajectory of a video camera when it is moved along a character string by bringing the tip of the video camera into contact with the paper surface and making it easy to handle. The purpose is to do.

[0006]

[Means for Solving the Problems]

 Rotate so that the axis is perpendicular to the direction in which the cylindrical rubber roller is moved to the edge of the imaging-side tip of the case that holds the imaging camera and the magnifying lens arranged in the optical path of the imaging camera. It is installed and configured.

[0007]

[Action]

 By the above means, the rubber roller rolls in a direction with respect to the paper surface, so that the moving direction of the video camera is stabilized and the reading of characters is facilitated.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B show one embodiment of the present invention and show an external structure. The external appearance is a case shape, and a lid 102 is rotatably attached to the edge of one side opening of the main body 100. When the lid 102 is closed, the handle 103 can be carried around freely. The overall planar size is about B5 size to A4 size. Housing units 111 and 112 are provided inside the main body 100. The housing unit 111 can house the video camera 200, and the housing unit 112 can house the color liquid crystal display device 300. The video camera 200 is connected via a cord 201 to a connection portion provided on a panel of the operation unit 105 of the main body 100, and is taken out from the storage unit 111 so that it can be freely aimed at a subject within the range of the length of the cord. Can be imaged. The video camera 200 has a zoom function and is also provided with an operator for adjusting the enlargement ratio.

The cord 201 and the panel of the main body may be detachable or fixed via a connecting device. Also, in the figure, the attachment portion of the cord 201 is designed on the right side of the main body, but this location may be on the left side. Furthermore, although the attachment position of the cord 201 to the main body is shown as one place, it may be provided at a plurality of places. This is because the user convenience and flexibility are taken into consideration.

Various methods can be used for the zoom function of the video camera 200, and optical lens control or electronic writing / reading control to / from the memory is possible.

Next, the color liquid crystal display device 300 can be completely accommodated in the accommodating portion 112 and the lid of the main body can be closed. At the time of use, the rising display surface is used by, for example, a hinge mechanism as shown in the figure. You can turn to the person side. The operation unit 105 is also provided with an operator for adjusting the brightness of the color liquid crystal display device 300.

The color liquid crystal display device 300 is provided between the rectangular display panel section 301, the panel holding section 301 that holds the rectangular display panel section 301, and the display panel section 301 and the panel holding section 302. It has an engaging means for holding the panel holding portion 301 by switching it in either the horizontally long direction or the vertically long direction. The display surface of the display panel unit 301 is, for example, a rectangle having an aspect ratio of 3: 4 (aspect ratio). Therefore, it is usually in an effective use state when displaying a sentence in which characters are arranged in the horizontal direction. However, in this system, the panel display unit 302 can be rotated 90 ° to have a vertically long posture, and can be effectively used even when displaying a text in which characters are arranged in the vertical direction. ..

FIG. 2 is a diagram for explaining an example of a posture switching system of the display panel unit 301 of the color liquid crystal display device 300. (A1) to (c1) of the same figure show the process in which the posture is switched when viewed from the front. (A2) to (d2) of the same figure show the process in which the posture is switched when viewed from the back. In the same figure (a1), the posture is suitable for reading a normal state of a horizontally long sentence, and the display panel section 301 is slid upward to switch the posture to a posture suitable for reading a vertically long sentence. Figure (b2)). Then, it is tilted by 90 ° ((b1) and (c2) in the figure) and pushed down ((c3) in the figure). As a result, the posture is switched, and when returning to the original state, it is possible to recover by following the reverse of the above operation. A cutout groove 303 is formed in the panel holding portion 302, and pins 304 and 305 provided in the display panel portion 301 are inserted into the cutout groove 303.

When enlarging and displaying the characters in the lateral arrangement, the camera is also oriented so that the long side of its imaging surface is in the lateral direction. When a character in the vertical direction is enlarged and displayed, an effective image can be obtained by arranging the long side of the image pickup surface of the camera to be in the vertical direction.

FIG. 3 shows an example of the video camera 200. The video camera 200 includes a camera 211 inside a small case 201, and an optical system 212 arranged in front of the camera 211. Further, a lighting tool 213 is also incorporated. A hood 213 forming a part of the case is attached to the lower surface of the case corresponding to the optical system 212 so as to extend in the axial direction. The hood 213 has a skirt shape, and an opening 214 through which a writing instrument such as a pencil can be inserted is formed on a side surface of the hood 213, so that a character writing character can be imaged. A switch (not shown) for switching the zoom is provided on the upper surface of the case.

Further, a notch portion 220 is formed in a portion of the front end portion of the hood 213 (the front end portion of the entire case) facing the opening 214, and a cut-and-raised side of the notch portion 220 facing each other is formed. A rubber roller 223 is rotatably attached between 221 and 222. The axial direction of Rubber Lo et al. 223 is a direction orthogonal to the moving operation direction of the camera. When the tip portion of the video camera 200 is placed on the paper surface, the rubber roller 223 also contacts the paper surface. Therefore, when the video camera 200 is slidably moved in the direction of the arrow shown in the figure, the rubber roller 223 is rotated to obtain directivity in the moving direction, which eliminates lateral shake or the like and stabilizes along the character string. Can be moved. Further, sliding members 224 and 225 with low frictional resistance are attached to the tip of the case on the left and right with respect to the moving direction.

When this video camera 200 is used for reading, it is used by tracing the lines of the page of the book to be read. Then, the position corresponding to the lower part of the hood 213 is illuminated, and the periphery thereof is guided to the camera 211 by the optical system 212. An image pickup video signal from the camera 211 is processed by a video processing circuit incorporated in the case main body 100 via a code and displayed on the color liquid crystal display device 300. In the color liquid crystal display device 300, the user sees the enlarged character imaged by the camera 211. Further, when drawing or writing between lines, it is possible to insert a writing instrument such as a pencil through the opening 214, and the state can be enlarged. Further, the hood 213 is rotatable with respect to the case 201, and even if it is necessary to switch between the horizontally long and vertically long layouts of the display panel and change the orientation of the camera, the insertion direction of the writing instrument can be freely selected. And you can deal with left-handed and right-handed people freely.

Various forms of the bidet camera 200 are possible. The video camera 200 may be further provided with an operator capable of adjusting the brightness of the illumination. Furthermore, the video camera 200 may be provided with an adjusting operator on the color liquid crystal display device 300 side. In this way, you can operate everything with one hand. Further, regarding the relation between the video camera 200 and its signal processing device, a storage unit may be provided so that the characters can be stored over a plurality of lines, for example. This makes it easier for the user to move the camera body, as compared to moving the camera body while sequentially following a sentence of 1 to 5 characters by hand. Next, the electrical path of the above device will be described.

In FIG. 4, reference numeral 401 denotes a zoom lens, and the optical image magnified here is formed on the image forming surface of the CCD solid-state image sensor 402. The image pickup signal read from the solid-state image pickup device 402 is formed into a video signal by the video input processing unit 501. The output signal from the video input processing unit 501 is led to the external output terminal 504 via the output amplifier 503 and is supplied to one of the switches 506 via the amplifier 505. The switch 506 selects either the external input from the external input terminal 511 or the output signal from the amplifier 505 and is input to the color addition processing circuit 507. The color addition processing circuit 507 adds a monochromatic signal such as red or yellow to the character signal included in the video signal and outputs the added signal. The video signal to which the color signal has been added in this way is supplied to the color liquid crystal display device 300 via the output amplifier 509 and, for example, only characters are displayed in color.

In this system, when the switch 506 selects the external input terminal 511 side, the external output video signal from another similar portable LCD magnifying reading device is taken in and read by another person. It is also possible to display the contents on the color liquid crystal display device 300. Furthermore, the video signal taken in from the external input terminal 511 can be given as an external input video signal to the next similar reading device via the external output terminal 512. For this reason, when one person is reading an image with a magnifying reading device and reading it, it can be given to the same reading device one after another through the external input terminal 511 and the output terminal 512. People can read.

The color addition processing circuit 509 can switch the color to be added to the character signal. This can be done by switching the switch 508, and the color that is most perceptible to the user is selected. The switch 508 may be freely switchable by the user from the outside, but when the user is determined, it may be set according to the user when the device is ordered. For people with low eyesight, it is preferable to add that color to the characters because the colors that are easy to feel may be narrowed down to a specific color. For example, the following method is used to add a color signal to a character signal. Now, assuming that a book is being imaged, it is possible to determine that the black-and-white luminance signal is equal to or higher than (or lower than) a predetermined level as a character signal. Therefore, the luminance signal is input to the slice circuit and a signal (character signal) having a predetermined level or higher is taken out. If the carrier color signal is multiplexed with the luminance signal at the timing when the character signal exists, a colored character can be obtained in the display device. The extracted character signal is used as a switch control signal, and the carrier color signal is multiplexed with the luminance signal via the switch. The power supply system in the above system will be described. In the power supply system, the commercial power supply taken in from the plug 521 is rectified and smoothed by the power supply circuit 522. The smoothed output is supplied to the circuit of each part through the switch 523, the fuse 524, and the power switch 525. Furthermore, since this system is portable, it can be equipped with a battery 526, which makes it easier to use. When the battery 526 is used, the switch 523 selects the battery 526 side. The resistor 514 connected to the switch 513 is a matching resistor used when no external output is required.

A characteristic device is also applied to the above system. First, since it is portable, the battery 526 can be used. The color liquid crystal display device 300 is adopted for weight reduction. Since the color display is obtained, the characters can be displayed in the color most easily perceived by a person with low eyesight, which makes it easier to see. In addition, multiple expansion reading devices can be added and connected, making it easy for many people to view one book at the same time. In addition, even in an environment where there is one teacher and many students, it is possible to distribute signals to each student from the reading device owned by the teacher. The same is true at meetings, etc., and the material indicated by the reader can be transmitted to more people through the external output terminal.

Further, this system can be applied in various ways. For example, when a document is placed on the lid 102 shown in FIG. 1B and is picked up by the video camera 200, a clip mechanism for preventing the deviation of the document is provided or a guide mechanism of the video camera 200 is provided. May be provided.

[0025]

As described above, according to the present invention, when the distal end of the video camera is brought into contact with the paper surface and moved along the character string, the trajectory is stabilized and the handling is facilitated. You can

[Brief description of drawings]

FIG. 1 is a perspective view showing an external structure of an embodiment of the present invention.

FIG. 2 is an operation explanatory diagram of the color liquid crystal display device of FIG.

FIG. 3 is a diagram showing an example of a video camera used in the device of the present invention.

FIG. 4 is a diagram showing an example of an electric system of the device of the present invention.

[Explanation of symbols]

100 ... Main body, 102 ... Lid, 103 ... Handle, 105 ...
Operation unit, 111, 112 ... Housing unit, 200 ... Video camera, 300 ... Color liquid crystal display device, 201 ... Case, 2
11 ... Camera, 213 ... Hood, 214 ... Opening, 223
... rollers, 224, 225 ... sliding members, 301 ... display panel section, 302 ... panel holding section.

Claims (1)

[Scope of utility model registration request] 1. An axis is orthogonal to a direction in which a cylindrical rubber roller is moved and operated at a leading edge on the imaging side of a case holding an imaging camera and a magnifying lens arranged in the optical path of the imaging camera. A camera head unit moving device characterized in that it is rotatably attached as described above.