JP2001023240A - Disk recording medium and optical reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk type recording medium in which information signals are recorded with a plurality of light beams using three primary colors of light, and to provide a disk type recording medium and an optical reproducing device in which a plurality of data can be simultaneously reproduced from the disk type recording medium. SOLUTION: A white light beam is converged by a lens 2 to irradiate a specified position of a disk type recording medium 3. The surface of the disk recording medium 3 is colored into dots like a photographic film by printing colors using the three primary colors of red R, green G and blue B. The white light converged by the lens 2 irradiates, for example, dots of R (red), R+G (yellow), white (R+G+B) or the like on the disk type recording medium 3, and the white light is converted into the respective colors and enters a dichroic prism 4. The components of red R, green G and blue B included in the aforementioned colors are separated into the respective optical paths. The red R light, green G light and blue B light are identified by sensors 5, 6, 7, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk-shaped recording medium on which information signals are recorded in a plurality of colors using three primary colors of light, and an optical reproducing apparatus for reproducing information signals from the disk-shaped recording medium. .

[0002]

2. Description of the Related Art Optical recording / reproducing apparatuses for recording / reproducing information signals on / from optical discs are widely used. This means that the recording laser light is converged and irradiated on the disc-shaped recording medium,
The information signal is recorded by pits and the like, and the information signal is reproduced by detecting the amount of reflected light of the reproduction laser light and the like.

[0003]

By the way, in the above-mentioned conventional optical recording / reproducing apparatus, usually one data is simultaneously obtained from one mark at the time of reproduction, and it is difficult to take out a plurality of data at the same time. .

The present invention has been made in view of the above circumstances, and has a disk-shaped recording medium for recording an information signal with a plurality of lights using three primary colors of light and a plurality of data from the disk-shaped recording medium at the same time. It is an object of the present invention to provide a disk-shaped recording medium and an optical reproducing device that can be taken out.

[0005]

According to the present invention, there is provided a disk-shaped recording medium in which a plurality of colors using three primary colors of red R, green G and blue B are colored in a dot shape to represent an information signal. It is characterized by having.

An optical reproducing apparatus according to the present invention reproduces an information signal from a disk-shaped recording medium in which a plurality of colors using three primary colors of red R, green G and blue B are colored in a dot shape. A white light emitting unit that emits white light, a converging unit that converges and irradiates the white light from the white emitting unit onto a plurality of colors on the disc-shaped recording medium, and is converged by the converging unit. Separating means for separating the colored light obtained by passing the white light through a plurality of colors on the disk-shaped recording medium into three primary colors of red R, green G and blue B; and red separated by the separating means. Detecting means for detecting R, green G, and blue B.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an optical reproducing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of this optical recording / reproducing apparatus.

The white LED 1 has a red R, a green G,
It emits white light mixed with blue B. The lens 2 converges the white light and irradiates a predetermined position on the disk-shaped recording medium 3.

As the disk-shaped recording medium 3, for example, a film having optical transparency is used. As shown in FIG. 2, the surface of the disk-shaped recording medium 3 is colored in a dot shape like a photographic film by printing using three primary colors of red R, green G, and blue B. Note that glass may be used as the disk-shaped recording medium 3.

The white light converged by the lens 2 is, for example, R (red), R + G on the disk-shaped recording medium 3.
(Yellow), white (R + G + B). Then, the white light is converted into each color and enters the dichroic prism 4.

The dichroic prism 4 separates the red R, green G, and blue B components included in each color into respective optical paths. The red R is recognized by the sensor 5, the green G is recognized by the sensor 6, and the blue B is recognized by the sensor 7.

For example, if there are red dots on the disk-shaped recording medium 3, the white light from the white LED 1 is converted to red, the red sensor 5 is turned on, and the green G and blue B sensors are turned on. The sensor is turned off.

Next, if there is a yellow dot on the disk-shaped recording medium 3, the white light is converted to yellow, the green G sensor 6 and the red R sensor 5 are turned on, and the blue B sensor 7 is turned on. Turns off.

Each of the sensors 5, 6, 7 is, for example, "111" when R is recognized, and "011" when G is recognized.
, And outputs “001” when B is recognized. As a result, the optical reproducing apparatus can simultaneously extract three types of data.

Therefore, data can be simultaneously supplied to a computer having two or more microprocessor units (MPU). In addition, since data is taken out at the same time, high speed can be realized.

[0016]

According to the optical reproducing apparatus of the present invention, a plurality of data can be taken out simultaneously. Therefore, data can be simultaneously supplied to a computer having two or more microprocessor units (MPU). In addition, since data is taken out at the same time, high speed can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of an optical reproducing apparatus according to a specific example of the present invention.

FIG. 2 is a diagram showing a disk-shaped recording medium reproduced by the optical reproducing device.

[Explanation of symbols]

 Reference Signs List 1 white LED 2 lens 3 disk-shaped recording medium 4 dichroic prism

Claims (2)

[Claims] 1. To represent an information signal, a red R,
A disk-shaped recording medium characterized in that a plurality of colors using three primary colors of green G and blue B are colored in a dot shape. 2. Red R, green G and blue B
An optical reproducing apparatus that reproduces an information signal from a disk-shaped recording medium in which a plurality of colors using primary colors are colored in a dot shape, comprising: a white light emitting unit that emits white light; Converging means for converging and irradiating light to a plurality of colors on the disc-shaped recording medium; and coloring obtained by passing the white light converged by the converging means through a plurality of colors on the disc-shaped recording medium. A light reproducing apparatus comprising: separating means for separating light into three primary colors of red R, green G and blue B; and detecting means for detecting red R, green G and blue B separated by the separating means. apparatus.