JPH01280958A - Information detector - Google Patents

Abstract

PURPOSE:To read lots of data efficiently at a time without moving a medium with lots of data recorded thereupon at a high speed by providing a moving means moving a system comprising a magnification and projecting means and an image receiving means in parallel with a medium face. CONSTITUTION:A detection system comprising a convex lens 2 and a solid-state image pickup element 3 is moved in parallel with a face of a medium 1 by arms 6a, 6b to able to read all the information of the large medium 1 not magnified by the convex lens 2 at once. Thus, the area on the medium 1 with lots of data recorded thereupon is observed by the solid-state image pickup element. Thus, lots of data are read simultaneously from the medium 1 without moving the medium 1 at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information detection device for reading information recorded on a film or a disc.

Conventional technology In recent years, a technology has been established for reading out information recorded on a disc-shaped disc using a laser, and for example, it is being used in earnest as a compact disc in the audio field (for example, Compact Disc Reader [Ohmsha Co., Ltd.]). P63
~P64).

Problems to be Solved by the Invention However, when the above-mentioned device reads information on a disk, it sequentially reads out one pit at a time. The problem has been that unless the number of data read out per hour is increased, it is not possible to secure the data transfer rate necessary to reproduce the music signal.

In view of the above problems, the present invention provides an information detection device that can eliminate the need to move a recording medium at high speed by simultaneously reading a large amount of data.

Means for Solving the Problems In order to solve the problems described above, the information detection device of the present invention includes means for optically enlarging and projecting an image of a part of a medium that extends in two-dimensional directions, and a means for optically enlarging and projecting an image of a part of a medium that extends in a two-dimensional direction; It is composed of an image receiving means for receiving an image, a quantizing means for quantizing and outputting the shading of A9 based on the output of the image receiving means, a control means for controlling the image receiving state of the image receiving means, an enlarged projection means, and an image receiving means. and a moving means for moving the system parallel to the medium surface.

Effect: With the above-described configuration, the present invention allows a large amount of data to be simultaneously read from a medium without moving the medium at high speed by observing an area on the medium on which a large amount of data is recorded with an imaging device. It is something that can be done.

Embodiment Hereinafter, an information detection apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of an information detection device in an embodiment of the present invention.

In FIG. 1, 1 is a medium such as a film or disk having a uniform hue, 2 is a convex lens, 3 is a solid-state camera (sensing element), 4 is a control device, 5 is an analog-to-digital converter,
6a and eb are arms that move the system consisting of the convex lens 2 and the solid-state image sensor 3 in parallel to the medium 1;
controls movement in the X direction, and arm 6b controls movement in the Y direction. 7 is an output terminal.

The information detection device configured as above will be explained. A portion of the medium 1 is enlarged by a convex lens 2 and an enlarged image is projected onto the imaging surface of a solid-state naked image element 3. At this time, a control signal is given from the control device 4 to bring the solid-state image sensor 3 into an imaging state. Next, a control signal is given from the control device 4 to transfer information on the medium surface imaged by the solid-state image sensor 3 to the analog-to-digital converter 5. At this time, the solid-state image sensor 3 sequentially outputs a potential according to the information recorded in density on the medium surface, so this potential is quantized by the analog-to-digital converter 6 and output from the output terminal. The information recorded in the data can be detected as digital values.

A film or disk with a uniform hue is used as the medium 1, and information values are recorded on the surface of the medium by distinguishing them by shading.Currently, such recording is possible with an accuracy of about 2 μm, and if convex lens 2 The area of medium 1 to be expanded is 4
ij (2mm x 2 (goods)), if recorded in binary values of dark/light, 1.000,000 bits
f) Information recorder.

On the other hand, the solid-state image sensor 3 can integrate about 2000 p00 pixels with a size of about 8 μm x 8 μm, so if the medium image is magnified 4 times (16 times in area) with the convex lens 2, the above-mentioned 1 , 000,000 bits
information can be read.

By moving the detection system composed of the convex lens 2 and the solid-state image sensor 3 described above parallel to the surface of the medium 10 using the arms 6a and 6b, information on a large medium 1 that cannot be fully magnified by the convex lens 2 at one time can be collected. You can read everything.

In addition, as the solid-state image sensor 3 moves, the input and output of signals between the solid-state image sensor 3, the control device 4, and the analog-to-digital converter 6 are controlled by a length of 1 elasticity that does not impede the movement.
Lead wire with durability etc.

This can be achieved using a wired wire such as a coiled wire. It may be possible to perform the input/output wirelessly using optical conversion, but this would require a large-scale device.

In addition, 1.000,000 bits are read for − times.
When reading the information, the detection system only needs to be moved about once every 10 seconds when reproducing the audio signal.

In this way, an information detection device that does not require high-speed movement of the medium 1 can be configured.

Since information can be recorded on the medium 1 in this embodiment by printing or the like, the reproduction and manufacturing of the medium 1 is inexpensive.

In this embodiment, the solid-state image sensor 3 is used as the imaging means, but an imaging tube may also be used. Further, although the convex lens 2 is used to enlarge the medium image, any optical system that can obtain the same effect may be used, and the present invention is not necessarily limited to the convex lens 2. Further, the information recorded on the medium is not limited to binary values of dark/light, but may be recorded in a plurality of gradations within a range that can be recognized by the solid-state image sensor 3.

Furthermore, the moving means of the detection system is not limited to the arms 6a and 6b, but may be any mechanism that can perform similar operations.

Effects of the Invention As described above, the information detection device of the present invention includes means for optically enlarging and projecting an image of a portion of a medium having a width in two-dimensional directions, and an image receiving means for receiving the enlarged and projected image. and,
A system comprising a quantizing means for receiving the received image signal, quantizing the density of the image, and outputting the quantized image, a control means for controlling the image receiving state of the image receiving means, the enlarged projection means, and the image receiving means is arranged on a medium surface. By providing a moving means for moving in parallel, a large amount of data can be read out quickly and efficiently without moving the medium on which a large amount of data is recorded at high speed.

[Brief explanation of the drawing]

The figure is a block diagram of an information detection device in an embodiment of the present invention. 1... Medium, 2... Convex lens, 3...
... solid-state image sensor, 4 ... control device, 5 ...
...Analog-digital conversion V device, 6a+6
b. Old... Arm, 7... Output terminal.

Claims (1)

[Claims] means for optically enlarging and projecting an image of a portion of a medium that extends in a two-dimensional direction; an image receiving means for receiving the enlarged and projected image; and quantizing the shading of the image based on the output of the image receiving means. quantization means for outputting an image, a control means for controlling an image receiving state of the image receiving means, and a moving means for moving a system constituted by the enlarged projection means and the image receiving means parallel to the surface of the medium. An information detection device characterized by: