JPS6226657A - Information storage medium - Google Patents

Abstract

PURPOSE:To read and discriminate the characteristic of an information forming layer by providing a display part to display the characteristic of the information forming layer at an information storage medium. CONSTITUTION:At optical disk medium 3, an information forming layer 4 is film-formed, and the groove is formed at the information forming layer 4. At the lower part side of the optical disk medium 3, a recording head 5 is provided, the light is irradiated in the groove of the optical disk medium 3 and the data are recorded by the coded signal. At the upper surface of the optical disk medium, a display part 7 to display the characteristic of the information forming layer 4 with a bar code 6 is provided. When the optical disk medium 3 is inserted into the main body 1 of the device, a bar code 6 is optically read by a detecting device 8, the reading information is fed back to a control circuit 9 and in accordance with the characteristic, the action of the recording head 5 is controlled. Thus, the characteristics of the information forming layer can be discriminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an information storage medium used, for example, as an optical disk medium.

[Technical background of the invention and its problems]

An optical disk medium has an information forming layer on at least one side of the medium that can be recorded or reproduced using a laser beam, and this information forming layer is broadly classified into an inorganic film and an organic film. .

The information forming layer of the inorganic film may include pit forming type, phase change type,
The information forming layer of the organic film includes a bubble forming type, a pit forming type, and a molecular structure changing type. These various functional films have different reflectances depending on the film production method and material.

Further, there are cases where the polarity of the written signal is different, that is, the reflectance of the written signal portion becomes high and vice versa.

Furthermore, the threshold value of the light source's output varies depending on the difference in the functional film.

For this reason, in the past, there was a problem that information could not be recorded on and reproduced from various optical disk media using a single device.

[Purpose of the invention]

The present invention was made in view of the above circumstances, and its object is to provide a complete information storage medium in which the characteristics of the information forming layer can be determined.

[Summary of the invention]

To achieve the above object, the present invention provides an information storage medium with a display section that displays the characteristics of the information forming layer, thereby making it possible to read and determine the characteristics of the information forming layer.

[Embodiments of the invention]

The present invention will be described below with reference to an embodiment shown in FIGS. 1 and 2. 1 in the figure is the main body of an optical disk device, and inside this main body 1 is an optical disk medium 3 as an information storage medium.
is stored.

An information forming layer 4 is formed on the optical disk medium 3, and grooves are formed in the information forming layer 4 in a spiral or concentric shape.

A recording head 5 is mounted on the lower side of the primary optical disk medium 3.
is provided, and the recording head 5 irradiates light into the grooves of the optical disk medium 3 to record data in the form of encoded ratio signals.

Furthermore, when all data is to be reproduced, a certain amount of reproduction light is tracked to the unrecorded part of the groove to read the data.

On the other hand, as shown in FIG. 2, on the upper surface of the optical disk medium 3, the characteristics of the information forming layer 4 of the optical disk medium 3, such as the reflectance, the threshold of laser power, the polarity of the reproduced signal, and other physical constants are displayed. A display section 7 for displaying the barcode 6 is provided.

To be sure, a detector 8 serving as a reading section for reading the barcode 6 on the display section 7 is provided in the main body 1 of the apparatus. The detector 8 is connected to the recording head 5 via a control circuit 9.

When the optical disk medium 2 is inserted into the main body 1 of the optical disk device, the barcode 6 on the display section 7 on the top surface is optically read by the detector 8, and the read information (reflectance, This is because the physical constants (such as sensitivity, polarity of the signal to be reproduced, and other physical constants) are fed back to the control circuit 9 to determine the characteristics, and the operation of the recording head 5 is controlled in accordance with the characteristics.

In this way, the recording head 5 is operated according to the characteristics of the information forming layer 4 of the optical disc medium 3, and information can be read and recorded on various optical disc media 3 with one device.
It also becomes possible to erase the information.

In addition, in the above-mentioned embodiment, the barcode 6 is displayed on the display section 7.
However, the present invention is not limited to this, as shown in FIG. 3, a magnetic tape 11 may be used, and as shown in FIG. 4, numbers, letters, symbols 12, etc. may be used. good.

Further, as shown in FIGS. 5 to 7, bar codes 6, magnetic tape 11, numbers, letters, symbols 12, etc. may be provided on the side surface of the optical disk medium 3.

In addition, it goes without saying that the present invention can be modified in various ways within the scope of its gist.

〔Effect of the invention〕

As described above, the present invention has a display section that displays all the characteristics of the information forming layer, so that the characteristics of the information forming layer can be determined, and information can be processed satisfactorily in accordance with the characteristics with one device. This has the effect of making it possible to

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an information processing device, FIG. 2 is a front view showing its display section, FIG. 3 is a front view showing a first other embodiment of the display section, and FIG. 4 is a display FIG. 5 is a front view showing a third other embodiment of the display section, and FIG. 6 is a front view showing a fourth other embodiment of the display section. 7 are front views showing a fifth other embodiment of the display unit. 3... Information storage medium, 4... Information formation layer, 7...
Display section Applicant's agent Patent attorney Takehiko Suzue Figure 2
Figure 4 Figure 3 Figure 5 Figure 6 Figure 7

Claims (4)

[Claims] (1) An information storage medium having an information formation layer that can be recorded, reproduced, or erased, and further comprising a display section that displays characteristics of the information formation layer. (2) The information storage medium according to claim 1, wherein the display section displays information using a magnetic tape. (3) The information storage medium according to claim 1, wherein the display section displays a bar code. (4) The information storage medium according to claim 1, wherein the display section displays characters, symbols, etc.