JPS63104097A - Card type electronic apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a card-type electronic device in which electronic circuits such as a CPU and a memory are enclosed.

[Summary of the invention]

The present invention relates to a card-type electronic device, which inputs an optical signal by irradiating it to a solar cell, and uses the power generated by the solar cell to drive a circuit, etc.
This enables good circuit operation without the need to provide a circuit.

[Conventional technology]

Card-type electronic devices have been proposed in which electronic circuits such as a CPU and memory are enclosed, and the electronic circuits are inserted into a main device to perform specific calculations, output data, and the like. Conventionally, electrical contacts have been used for inputting and outputting data and addresses to and from the main body of such devices. Furthermore, power for driving the CPU and the like in the card-type device must be supplied from the main body side via contacts, or a built-in battery must be provided.

However, since such electrical contacts are based on contact, they are not stable and stable, and there is a high risk that accidents such as malfunctions due to poor contact may occur due to physical fluctuations. Furthermore, even when a built-in battery is provided, there is a risk of an accident occurring due to its consumption. [Problems to be solved by the invention] As stated above, in the conventional technology, electrical contacts are used. Therefore, there have been problems such as low reliability.
), input is performed by an optical signal irradiated to the solar cell, the output is displayed on the liquid crystal element, and at least the power from the solar cell (power supply circuit (4)) is input. This is a card-type electronic device in which the liquid crystal element described above is driven.

[Effect]

According to this system, extremely high reliability can be obtained because input and output of data, etc. is performed without contact using solar cells and liquid crystal elements, and the power from the solar cells can be used to efficiently drive internal circuits, etc. It can be carried out.

〔Example〕

In FIG. 1, (11((1/l) to (lh)) is, for example, a solar cell of 81[!J, and this solar cell!1
) forms 8-bit input data depending on the optical signal applied to each section. This input data is supplied to a data processing circuit (2) such as a CPU.

In addition, the power generated by the solar cell (1) is transferred to the diode (3).
), the power supply voltage is synthesized and supplied to the power supply circuit (4), and the power supply voltage stabilized by this power supply circuit (4) is sent to the processing circuit (2
).

This drives the processing circuit (2), and performs desired data processing using the above-mentioned input data and data written in, for example, a non-volatile memo.

This processed data is transmitted to, for example, eight liquid crystal elements (61 (
(6a) to (6h)), and this liquid crystal element (6)
A power supply voltage is supplied from the power supply circuit (4) to the 8-pin output data, which is displayed in brightness and darkness on the liquid crystal.

Further, the entire device is constructed as shown in FIG. In other words, (10) shows the entire card, and a solar cell (1) and a liquid crystal element (6) are provided on a part of the surface of this card (10).
) is provided. Further, a circuit (11) is enclosed in the remaining portion of this card (1o).

And when this card (10) is inserted into the main device,
As shown in Figure 3, for example, a laser beam from the light emitting part (12) of the main body is irradiated to each part of the solar cell (11) and the liquid crystal element (6).Here, the solar cell (1) is irradiated with a laser beam. The laser beam is modulated for each part to form a data signal, and the reflected light from each part of the liquid crystal element (6) is detected by the corresponding light receiving section (13) to detect output data.

In this way, input and output of data, etc. is performed between the main device and the card-type device, but with the above-mentioned device, human output is performed in a non-contact manner without using contacts, so reliability can be extremely high. In addition, by using the power from the solar cell, it is possible to drive a circuit etc. in a good manner without providing a built-in battery or the like.

Note that liquid crystal elements have extremely low power consumption and can be supplied with the power from the solar cells mentioned above, but in the above equipment, the optical signal irradiated to the solar cells always has a predetermined number of bits or more. It is necessary to use a signal form that is "l" (light emission).

Furthermore, although the response speeds of solar cells and liquid crystal elements are quite slow, in the above example, by using a plurality of these elements, the data transmission ability is further improved.

Furthermore, the display of the liquid crystal element can also be detected by a transmission type instead of a reflection type as described above.

〔Effect of the invention〕

According to this invention, input and output of data, etc. is performed in a non-contact manner using a solar cell and a liquid crystal element, so extremely high reliability can be obtained, and internal circuits etc. can be driven efficiently using power from the solar cell. Now you can do it.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an example of the present invention, and FIGS. 2 and 3 are diagrams for explaining the same. (1) is a solar cell, (2) is a processing circuit, (3) is a diode, (4) is a power supply circuit, (5) is a memory, and (6) is a liquid crystal element.

Claims (1)

[Scope of Claims] It has a plurality of solar cells and a plurality of liquid crystal elements, and input is performed using a light signal irradiated to the solar cells, and the output is displayed on the liquid crystal element, and the solar cells A card-type electronic device in which at least the liquid crystal element described above is driven by electric power from the card.