JPH0283691A - Information memory device - Google Patents

Abstract

PURPOSE:To perform data transfer at high speed by comprising a data read part of a liquid crystal panel which displays data in prescribed numeral and symbol, etc., comprising a data write part of a photodetector, and performing the readout and write of the data optically. CONSTITUTION:The liquid crystal panel 4 which displays the data stored in a storage element in the prescribed numeral and symbol, etc., is arranged on one side of a substrate 3, and the data readout part 6 is comprised of the liquid crystal panel 4 and transparent plates 5, 5. The data write part 8 consisting of, for example, the photodetector 7 is provided on the other side of the substrate 3. main side equipment 10 is equipped with a first light emitting par11 which irradiates light for data reading on the liquid crystal 4 and a second light emitting part 15 which irradiates write data on the photodetector 7. Thereby, since the transfer of the data between a data card 1 and the main side equipment 10 to which the card is connected can be performed by the light and the data can be transferred in parallel by liquid display, the data transfer can be performed faster than ever before.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an information storage device, and more specifically,
I write and read data optically
This relates to data cards such as C cards and memory cards.

[Conventional technology]

This type of data card is equipped with a CPU, a memory element, a backup power supply, and the like, and can write, read, or replace data as appropriate. In use, this data card is inserted into a socket member provided on a main body device such as a recorder, and data is exchanged through mechanical contact of the terminals.

[Problem to be solved by the invention]

However, since the connection with the device on the main body side is made by mechanical contact, it is necessary to take measures against inrush current and static electricity, and even if such measures are taken, there is a concern that something may go wrong.

This invention was made in view of the above-mentioned conventional circumstances, and its purpose is to provide an information storage device that electrically insulates between the main unit side equipment and the data card, and writes and reads data optically. It is about providing.

[Means to solve the problem]

In order to achieve the objective 1-1, the present invention includes a memory element, a data read section for reading data stored in the memory element, and a data write section for writing data into the memory element. in information storage devices.

- The J2 data reading section is composed of a liquid crystal panel that displays the data using predetermined numbers, symbols, etc., and the H data writing section is composed of a light-receiving element, and reads and writes the D data optically. I try to do it.

[For production]

According to this configuration, since data is exchanged between the data card and the device connected to the main body using light, the two are reliably electrically insulated and are protected against inrush current and static electricity. No countermeasures are required. Furthermore, since data can be transferred in parallel, data transfer can be made faster.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows the appearance of this information storage device (data cart) J. According to this, the information storage device 1 has a card-shaped case 2 made of, for example, synthetic resin.
It is equipped with Although not shown in detail, the casing 2 includes a board 3 on which a CPU, a memory element, and other circuit components necessary for a memory device are mounted.

On one end side of the tin plate 3, a liquid crystal panel 4 is arranged d that displays data stored in the memory element using predetermined numbers, symbols, etc. In this embodiment, the liquid crystal panel 4 is of a light transmission type, and transparent plates 5, 5 are provided on both sides thereof. That is, this liquid crystal panel 4 and transparent plates 5, 5 constitute a data reading section 6.

On the other hand, on the other end side of the substrate 3, for example, a light receiving cable 7 is provided.
A data writing section 8 consisting of the following is provided. Note that the light receiving element 7 is covered with a transparent plate 9 for protection.

FIG. 2 schematically shows the configuration of a main body device (information processing device) 10 that uses this data card 1.

That is, this main body side device 10 includes a first light emitting section 11 that irradiates the liquid crystal panel 4 with light for reading data, and a light receiving section 1 that includes, for example, a CCU, that receives the transmitted light.
2, and an A/D converter 13 that converts the output voltage of the light receiving section 12 into a digital signal.

A D/A converter 14 that converts the write signal for the data card 1 into an analog voltage;
The light emitting section 15 is also provided.

When reading data, the liquid crystal panel 4 reads the data stored in the memory element as shown in FIG. 3(a).
Corresponding to IJrOJ, each data is displayed so that it is opaque (black circle in the figure) when it is "1" and transparent (white circle in the figure) when it is "0". This display data is read by the light receiving unit 12, and converted into rlJ rOJ digital signals by the A/l) converter 13 as shown in FIG. 3(b) depending on the presence (or magnitude) of the output voltage. Ru. In addition,
Rather than the display corresponding to rlJ rOJ above, the fourth
As shown in the figure, for example, a symbol such as r8jinJ may be used.

A plurality of light receiving elements 7 of the data writing section are arranged in a matrix on a predetermined substrate 16, as illustrated in FIG. Although not shown, the second light emitting section 15
For example, a plurality of L corresponding to each of the light-receiving cables 7 written in "-"
ED is provided. That is, when writing data, for example, rl as shown in FIG. 3(b)
The write data of J rOJ is converted into an analog voltage by the D/A converter 14, and the LEI (not shown) is converted accordingly.
) is turned on or off. As a result, the data is written in the light receiving element 7 as dot data as shown in FIG. 3(a), for example.

In addition, in order to prevent erroneous writing between adjacent light-receiving elements 7 during this writing, a recess 17 of a predetermined depth is formed in the substrate 16 as shown in the figure, and each light-receiving element 7 is arranged within the same gate 17. It is preferable. For more certainty, it is preferable to provide each of the light receiving cables 7 with a condensing lens.

Further, unlike the above embodiments, the light receiving cable 7 may be a solar cell, which eliminates the need for a dedicated power source. For example, the clock can be manually generated by blinking the LED of the second light emitting section 15, and the clock signal can be converted into direct current by an internal circuit to be used as a power source for an IC or the like. moreover,
The liquid crystal panel 4 may be of a reflective type.

〔Effect of the invention〕

As explained above, according to the present invention, data is transmitted and received between the data car 1- and the main device to which it is connected using light, so that the connection between the two is electrically reliable. Therefore, the inrush 'li1. This eliminates the need for countermeasures against currents and static electricity, and because the liquid crystal display allows data to be transferred in parallel, data transfer can be made faster.

[Brief explanation of the drawing]

Figure 1 shows an information storage device (data card) according to this invention.
FIG. 2 is a block diagram schematically showing the configuration of the information processing device used in the data car 1, and FIGS. 73(a) and 73(b) are explanations of operations when reading data. figure,
FIG. 4 is an explanatory view showing the state of the liquid crystal display during data reading, and a perspective view showing the light receiving elements of the fifth data and first data storage areas. In the figure, 1 is an information storage device, 2 is a housing, 3 is a substrate, 4 is a liquid crystal panel, 5 is a transparent plate 56 is a data reading section, 7 is a light receiving element, 8 is a data writing section, 10 is an information processing device, 11
1 is a first light emitting section, 12 is a light receiving section, 13 is an AID converter, 1
4 is a D/A converter, and 15 is a second light emitting section.

Claims (5)

[Claims] (1) In an information storage device comprising a memory element, a data read section for reading data stored in the memory element, and a data write section for writing data into the memory element, the data read section reads the data. Consisting of a liquid crystal panel that displays predetermined numbers, symbols, etc., the data writing section is composed of a light receiving element, and is used for reading the data,
An information storage device characterized in that writing is performed optically. (2) The information storage device according to claim 1, wherein the liquid crystal panel is of a light transmission type. (3) The information storage device according to claim 1, wherein the liquid crystal panel is of a light reflective type. (4) The information storage device according to claim 1, wherein the data writing section comprises a solar cell. (5) A first light emitting section that irradiates light to the liquid crystal panel, a light receiving section that receives transmitted light from the liquid crystal panel, and a second light emitting section that irradiates a light write signal to the data writing section. An information processing device comprising: an optical connector for writing and reading data to and from the information storage device according to claim 1.