JPS58222377A - Information processing system - Google Patents

Abstract

PURPOSE:To reduce the cost of an information processor taking a fluorescent substance as an information medium and to improve the information density, by taking the fluorescent substance irradiating an infrared ray of a specific wavelength as the information medium of a data signal and taking the information medium other than the fluorescent substance as a timing signal. CONSTITUTION:A fluorescent substance data signal medium 22 and a timing signal medium punch hole 23 are provided for an information card 20 comprising blank 21 and reinforced members 24, 25 transmitted through an infrared ray. In inserting the card 20 to a path 3, the presence of the card 20 is detected with a light emitting diode LED8 and a photo diode PD10, an electric signal is given to a control circuit and an infrared ray LED5 is lighted with the control signal from the control circuit. The fluorescent substance 22 is excited with the irradiation of the infrared ray of lambdaa of wavelength from the LED5, the infrared ray of wavelength lambdab is generated, and the infrared ray of wavelength lambdaa+lambdab passes through a slit 2b and is made incident to a semiconductor optical filter 9. The infrared ray of lambdaa is absorbed at the filter 9 and the PD10 produces an electric signal through the weak/strong information of the infrared ray of the wavelength lambdab. When the light of the LED8 passes through the punch hole 23, it is received at a photo transistor 13 to produce a timing signal.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for optically processing information using a phosphor as an information medium.

When a certain kind of fluorescent substance is irradiated with infrared light having a wavelength λa, it emits infrared light having a longer wavelength λb, which is well known as the Stokes shift. Taking advantage of this, the phosphor is printed on paper at a certain (1) pitch and width, the above infrared emission is generated, and only the excitation wavelength λb is extracted and converted into an electrical information signal. Information processing methods for conversion are now being considered.

However, in the information processing, there are problems in encoding that the phosphor itself is expensive and the excitation light source is expensive.

In addition, there are restrictions on reducing the width and pitch of the phosphor, and there is a problem in that increasing the information density is limited by the area of the information card.

The present invention has been made in view of the above problem, and focuses on the fact that there is little need to keep the clock signal confidential.The present invention uses the phosphor only for the data signal, and uses other inexpensive information as the clock signal. The purpose is to reduce equipment costs and improve information density by using media.

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

Fig. 1 is a plan view showing an information processing device according to an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is a diagram showing a lower guide member. The side view (2) and FIGS. 5 to 12 are plan views showing the information card used, and FIG. 13 is a sectional view taken along the line CC in FIG. 5.

In the drawings, reference numeral 1 denotes an upper guide member, and 2 denotes a lower guide member, both of which are made of, for example, synthetic resin.
are fitted and fixed together to form a guide passage 3 and an entrance 4 for the information card. Reference numeral 5 designates two infrared light emitting diodes as excitation light sources, which are inserted and supported by the upper guide member l, and their anode and cathode terminals are connected to the printed circuit board 6.
is soldered to and supported by it.

This printed circuit board 6 is fixed to the upper guide member l by screws 7.

8 is an ordinary light emitting diode, which is inserted into the upper guide member 1, and its anode terminal and cathode terminal are similarly soldered to the printed circuit board 6 and supported by 6° □
・19 is a semiconductor light absorption filter that absorbs the infrared rays of wavelength λa emitted by the infrared light emitting diode 5 and transmits the excited (3) infrared rays of wavelength λb. Reference numeral 10 denotes a photodiode, two of which are used to read data signals from the fluorescent material.The photodiode is inserted into the lower guide member 2 so as to press the filter 9, and its terminal is soldered to the printed circuit board 11. . The printed circuit board 11 is fixed to the lower guide member 2 by screws εI2, and thus holds the semiconductor light absorption filter 9 with the photodiode 10. Note that the filter 9 can be one that has been integrally attached to the photodiode 10 in advance.

A phototransistor 13 is inserted into the lower guide member 2, its terminal is soldered to the printed circuit board 11, and together with the light emitting diode 8 constitutes a photointerrupter.

The information card 20 can be of various formats as shown in FIGS. 5 to 12. As shown in FIG. 13, its cross-sectional shape is such that a phosphor 22 is present between two sheets of Japanese paper 21, and the paper 21, together with a reinforcing material 24, has a reinforcing material 25 that transmits infrared 1'4. It is processed into an adhesive pouch (bag). Processing example (4) A bag-shaped reinforcing material 25 whose inner surface has been coated with adhesive in advance,
The method used is to put the above materials, apply heat, and press them together.

In the information card shown in FIG. 5, 22 is a data signal made of a fluorescent material, and 23 is information other than the fluorescent material, such as a clock signal made of a punch hole. Here, the width of the clock signal 23 is narrower than the width of the phosphor data signal 22.

The phosphor 22 can actually be made invisible by coloring the reinforcing material or by using a transparent phosphor itself.

This information card 20 is inserted into the entrance 14 of the guide passage 13 of the device.
When the information card 20 is inserted further, the photointerrupter (8, 10) detects the presence of the information card 20, sends an electric signal to a control circuit (not shown), and the infrared light emitting diode 5 is turned on by the control signal from the control circuit. By irradiating infrared rays with wavelength λa from this light emitting diode, the information card 20
The phosphor is excited and generates infrared rays with a wavelength λb, so that the infrared rays with a wavelength λa+λb pass through the slit 2b provided in the lower guide member 2 and enter the semiconductor optical filter 9(5). This filter 9 absorbs infrared rays with a wavelength λa, and the photodiode 10 generates an electric signal corresponding to intensity information of the infrared rays with a wavelength λb.

On the other hand, when the punched hole 23 of the information card 20 passes between the photointerrupter made up of the light emitting diode 8 and the phototransistor 13, an electric signal corresponding to the stamped signal is generated in the phototransistor 13. The electric signals generated by the photodiode 10 and the phototransistor 13 are input to a known discrimination circuit (not shown) and are reproduced into code data.

In this embodiment, the width of the punch hole 23 is set narrower than the width of the phosphor, and the clock signal 23 is used to control the NRZ.
demodulated into a binary signal. Note that the width of the clock signal is
It is sufficient that the slit is large enough to allow the light rays of the light emitting diode 8 to pass through, thereby making it possible to improve the information density.

6 to 12 show modified examples of the information card,
First, Fig. 6 shows an example in which the area occupied by the reinforcing material 24 is expanded, and Fig. 7 shows an example in which a bar (6) and a border hole 23 as a clock signal are provided in the reinforcing material 24, which is provided to extend in the same direction as the data string. For example, FIG. 8 is an example in which the area occupied by the reinforcing material 24 is expanded in the example in FIG. The former allows the front and back sides of the information card 20 to be used the same way, while the latter allows the front and back sides and left and right sides to be used the same way. On the other hand, in FIGS. 11 and 12, the data signals of the phosphor have different contents for the upper and lower tracks or the upper, lower, left, and right tracks, and the former shows two ways of using the information card 20, and the latter shows four ways of using the information card 20. It made it possible to use it.

Note that the clock signal may be a pattern of shading that changes the transmittance of light, instead of punching holes.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view taken along line B-B of Fig. 2 (however, small parts are not cut into sections), Fig. 4 1. is the lower guide part in the direction of arrow A in FIG. 5 to 12 are plan views showing the types of information cards (7) that can be used, and FIG. 13 is a sectional view taken along line cc in FIG. 5. 5... Infrared light emitting diode, 8... Light emitting diode for clocking, 9... Semiconductor light absorption filter, 1o... Photodiode, 13... Phototransistor for clocking, 2
2... Fluorescent data signal medium, 23... Punched hole as a time signal medium. Representative Patent Attorney Takashi Okabe 1 (8)

Claims (2)

[Claims] (1) In an information processing device that uses a phosphor that is excited by infrared rays of a specific wavelength and emits infrared rays of another specific wavelength as an information medium, the phosphor information is processed as a data signal, and An information processing method characterized by processing an information medium as a clock signal. (2) The information processing device according to claim 1, wherein a medium whose light transmittance changes is used as the information medium other than the phosphor.