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Apparatus having a rewritable display portion

A display and display medium technology, applied in computer parts, cooperating devices, carrier indicating/alarm devices, etc., can solve problems such as impracticality, vague impression of recorded content, and difficult content.

Inactive Publication Date: 2005-08-17
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the process of dealing with such media that requires continuous modification of recorded content while in use, it is not practical to replace the label every time the recorded content is modified.
As a result, users typically only write down an outline of what is written on the label, so there is no way of knowing exactly what was contained on the medium at a particular point in time
[0006] However, since the display portion (label) is usually filled with text indicating the recorded content, it becomes more and more difficult to recall the recorded content from these texts as time goes by, and the impression of the recorded content becomes blurred
This is especially inconvenient when dealing with large volumes of recording media

Method used

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  • Apparatus having a rewritable display portion

Examples

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Embodiment Construction

[0026] Embodiments of the present invention are described below with reference to the drawings.

[0027] Figure 1 is a perspective view of a videocassette embodying the present invention. figure 2 It is a partial view taken along line A-A' of FIG. 1 .

[0028] As shown in FIG. 1, a video cassette (recording medium) 1 has a casing 2 made of synthetic resin and substantially in the shape of a right-angled parallelepiped, in which a magnetic tape (not shown) is contained. In the center of the upper surface of the casing 2, a rectangular recess 2a is formed in which a display section 3 having reversible display means is placed.

[0029] The reversible display device constituting the display portion 3 has a polymer-dispersed liquid crystal film (hereinafter, referred to as a PDLC film) obtained by dispersing liquid crystal molecules in a high-molecular polymer material, and an electric field applied in a direction perpendicular to the PDLC film. to the device on the PDLC membrane...

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Abstract

A videocassette has a display portion for displaying recorded contents. The display portion is formed with a display device. The display portion is formed with a display device. The display device has a conductive layer, a PDLC (polymer-dispersed liquid crystal) film, and a protective layer. The display device can repeatedly record and erase visible information.

Description

[0001] This application is a divisional application of the invention patent application filed on February 13, 1997 with the application number 97103154.1 and titled "A device having a rewritable display part". technical field [0002] The present invention relates to a device having a display portion which facilitates rewriting of the display content thereon. Background technique [0003] As everyone knows, recording media such as floppy discs, optical discs, magneto-optical discs, and cassette tapes all have a display portion that displays recorded content. Such a display portion is usually used as an adhesive bonded on the outer packaging box of the recording medium tags are implemented. [0004] For the above-mentioned conventional recording media, rewriting the recorded content requires replacing the label, which is time-consuming. For this reason, when using media whose contents are frequently rewritten, users often leave blank labels and may end up forgetting what is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B23/03G11B23/04G11B23/38G11B23/40G11B33/10
CPCG11B23/38G11B33/10G11B23/042G11B23/40G11B23/0302
Inventor 坂卷照夫
Owner DAI NIPPON PRINTING CO LTD