JPS6280838A - Book information reproducing system by optical card - Google Patents

Abstract

PURPOSE:To give book information easily understood by the user by reading the book information recorded on an optical card optically, applying code conversion, displaying it as a picture, giving additional explanation by voice and printing the explanation as required. CONSTITUTION:A card reader 100 reads information from the optical card 10 on which book information such as telephone book, or periodical publications such as stock price, bill report, publishment guide, medical treatment or judicial precedent is recorded, the information is code-converted and stored in a memory by the information according to the code format. Then the information is inputted to a computer 1 via an interface 2. Then the computer 1 expands the inputted compression information as it is, converts the relevant voice information into a format for a voice reproducer 7, the processed data is sent to a display control circuit 4, a prescribed pattern is displayed on a display device 5, a keyboard 3 is operated and the corresponding information is selected. Further, the device 7 applies book guide or additional explanation in voice, outputted from a speaker 8 and required information is printed out (9).

Description

[Detailed description of the invention] (9. Technical field of Ming Dynasty) This invention records book information such as telephone directories, stock prices, securities reports, publication catalogs, periodicals such as medical and legal precedents, dictionaries, etc. on optical cards. The present invention also relates to a system for reading recorded information from an optical card and reproducing book information using 9 images of characters and a slurred voice.

(Technical background of the invention and its problems) In addition to magnetic cards, which have been widely used in cash cards, credit cards, etc., in recent years, optical data recording cards (hereinafter referred to as F, '11 optical card) is attracting attention. Optical cards are about 25,000 times more powerful than magnetic cards.
It has approximately 250 times the storage capacity (approximately 400 bytes) of an IC card, and there is a strong desire to develop its applications and utilization technology.

Here, the optical card is shown by reference numeral 10 in FIG. 2, and is small in size, and the card surface consists of a printed portion 11 for characters and figures, and an optical data recording area 12.
The optical data recording section can be set to 2α according to the recording capacity and recording dot size, including the back side, and the recording direction can be either the long side or the short side.

Arc, skew shape, etc. can be set arbitrarily. The most efficient reading method currently considered is to read data by scanning and detecting this area with the line sensor 11B.

This optical card 1G and the line sensor for reading it are in a mutually dependent relationship. That is, optical card 1
0 needs to record as much data as possible, so it is required to record as small pits as possible as densely as possible. On the other hand, with a line sensor, the pits of the optical card IO are arranged in a line in order to reduce reading errors. It is desirable for the card to have an appropriate size for the pixel size of the sensor.In order to balance the demands for the card from the viewpoint of recording density with the demands for the card from the line sensor side, the line sensor An optical system, ie, a lens, is provided at the light incidence section. However, during reading, the distance between each element of the optical system, including the card and line sensor, changes due to vibration of the card due to a malfunction in the card support mechanism, etc., and the recorded pits of the card become optically unstable. There is a problem in that the position is outside the operating range of the system, for example, outside the focusing range.

In addition, in the case of magnetic cards, reading can be performed while the reading head is in close contact with the magnetic recording surface of the card, whereas in the case of optical cards, the line sensor is separated from the data recording surface of the card via the optical system. The optical system must always focus on the recording surface of the card while it is being placed on the card and being read, and when the optical card is set in the reading device, the optical card inserted into the reading device must be kept in a predetermined position by the transport system. the optical system must be moved to a predetermined position. At this time, if we used the transport system used in conventional magnetic card reading devices,
It is very difficult to set the card in a given focal plane. In particular, since the material of the card is flexible, the error in the focal plane becomes quite large. Generally, when reading an optical system, accurate reading cannot be performed unless the focal plane error is kept within 60 μm, so this is a very serious problem. One way to solve this problem is to use an automatic focusing mechanism in the optical system. Providing a mechanism that automatically adjusts the focus of the optical system after the card is set will ensure proper focus at all times. However, such an automatic focusing mechanism has the disadvantage that it has a complicated structure and is expensive.

(Purpose of the invention) This invention was made based on the circumstances mentioned above, and the purpose of the invention is to provide telephone directories, stock prices, securities reports, publication catalogs, periodicals such as medical and judicial precedents, etc. The purpose of this invention is to propose the use of letter information such as # letters on optical cards, and to provide an optimal system for this purpose.

(Summary of the Invention) The present invention relates to an information reproducing system using an optical card, in which letter information recorded on an optical card is optically read and code converted, and the code-converted characters and image data are displayed on a screen. In addition to displaying and reproducing the letter information, sound information accompanying the letter information is outputted by a sound reproducing device, and necessary information of the letter information can be printed and outputted.

(Embodiment of the Invention) FIG. 1 is a block diagram showing an example of a system according to the invention, which can be used for telephone directories, stock prices, and securities reports.

An optical card 10 on which book information such as periodicals such as publication catalogues, medical precedents, dictionaries, etc. is recorded is a card reader 1
After the image data input to 0G and read by this card reading device 100 is processed as necessary, it is sent to the interface 2.
The data is input to the computer l via the . The information processed by the computer 1, such as format conversion, is input to the display control circuit 4, and is displayed as a telephone directory or the like corresponding to the reproduced image.

Letter information such as stock prices, securities reports, publication catalogs, periodicals such as medical and judicial precedents, etc. is displayed on a display device 5 such as a CRT. Further, accompanying audio information is inputted to the a playback device 7 via the interface 6, and is played back and outputted from the built-in speaker 8, which provides a supplementary explanation of the archaic language information recorded in the Koryoku-110. There is.

In such a configuration, first, the optical card 10 used in the present invention will be explained.

The plane of optical power -110 is as shown in Figure 2,
As shown in FIG. 3, its cross-sectional structure is formed by providing an optical recording material 14 on a card base material 13. This optical recording material 14 includes (a) an optical recording material base material 14a, and (
b) a recording layer 14d consisting of a light transmitting part 14b and a light shielding part 14c provided on the lower surface of this base material; and (C) this recording layer 1;
4d, and a reflective metal thin film layer 15 provided on the lower surface of the optical recording material 14, and the optical recording material 14 is provided on the card base material 13 so that the metal thin film layer 15 is in contact with the card base material 13. In some cases, magnetic recording 51B is performed on the surface L of the optical card 10.
may be provided, and if necessary, an IC
A memory, a photograph, an engraved image, 9 characters, a mark, an embossed character called an imprint, etc. may be provided on the surface of the optical card 10. By doing this, one card can be used for various music playback methods. In addition, counterfeiting can be more effectively prevented.

In another example of the optical card IO, as shown in FIG. 4, the recording layer 14d and the metal f! 1!
! ! ! ! 15 are provided.

Here, as the card base material 13, any material that can be used as a base material for a normal card can be used.

In terms of L-forms, polyvinyl chloride, vinyl chloride/vinyl acetate copolymer, polyvinylidene chloride, acrylic polymers such as polymethyl methacrylate, polystyrene, polyvinyl butyral, acetyl cellulose, styrene/butadiene copolymer, polyethylene , polypropylene, polycarbonate, etc. are used.

Depending on the case, metal sheets such as iron, stainless steel, aluminum, tin, copper, and zinc, synthetic paper, and the like may also be used. Furthermore, laminates for each of the above materials may also be used. Fifth
The figure shows yet another example of the optical card 10, in which an optical recording material 21 and a card protective layer 22 are provided in this order on a card base material 20. This optical recording material 21 is.

(a) a base material 23 for optical recording material; (b) a recording layer 2B consisting of a light transmitting part 24 and a light shielding part 25 provided on the lower surface of this base material 23; and (C) a recording layer 2B provided on the lower surface of this recording layer 2B. The optical recording material 21 is made up of a reflective metal layer 27 provided thereon, and the optical recording material 21 is provided so that the metal thin film layer 27 is in contact with the card material 2σ ball. A reflective metal layer is formed in a pattern on the corner of the card, and a light absorbing or diffusely reflecting layer is provided at the patterned position or under the reflective metal layer so as to be in contact with the card base material.

Next, 1000 examples of card reading devices are shown in FIGS. 6(A) and (
B) will be explained.

FIG. 6(A) is a schematic front view, and FIG. 14(B) is a schematic direct view. The optical card IO is inserted from the right side in the figure and is conveyed to the left by the guide roller 101. During this transportation, the optical card IO is supported by a traveling guide 102 (the central portion is omitted in FIG. 6(A)), and a reading optical system 103 is provided at the central reading position ( (omitted in FIG. 6(B)), this is composed of, for example, a lens and a line sensor, and this optical system 1
A backing plate 104 and a pressing roller 105 are provided under the roller 03. When the optical card 1G is conveyed to the reading position, it is inserted between the backing plate 104 and the pressing roller 105, and thereafter runs between them. suppression a-ra I
05 presses the optical card 10 from below to above so that the top surface of the optical card 10 is always on the back surface of the backing plate 104! ! let Adjust the installation position of the backing plate 104 so that the optical card lO is in close contact with it.
The data recording surface is an optical system! If the position is set to match the focal plane of 03, proper focus will always be ensured when reading data. Note that the patch plate 104 has a transparent window 106 for reading data, and this transparent window 10B is used for reading the optical card lO.
It is provided at a position corresponding to the data recording area 12 of.

FIG. 7 shows an optical system for reading the optical card 10, and this optical system includes a condenser lens 111, a diffuser plate 112, and a condensing lens 111, a diffuser plate 112, and so on. The light is applied to a half mirror 114 through a condensing lens +13, and the reflected light from the half mirror +14 is applied to the recording surface of the optical card 10 through an objective lens 115. The objective lens +15 is focused on the recording surface of the optical card 10, and pits on the recording surface of the optical card 10 are projected onto the line sensor 11B.

In this optical system, an optical card lO and a line sensor 11
In order to eliminate the need for focus adjustment even if the relative distance from the objective lens 115 changes, the magnification is set as low as possible to increase the depth of focus of the objective lens 115. This allows the optical card lO
It is not necessary to configure the functions of the device to strictly regulate the relative distance between the line sensor 116 and the line sensor 116, and the system can be simplified. Furthermore, the objective lens 115 has a large numerical aperture, thereby making it possible to avoid the effects of dust, scratches, etc. attached to the transparent protective layer covering the data recording surface of the optical card IO. , objective lens 1
15 needs to have sufficient resolution for the size of the recording pit.

Here, if the depth of focus is expressed as Δ, the numerical aperture is HA, the resolution is α, the reading wavelength is entered, and the magnification is expressed as m, the depth of focus Δ can be expressed as follows, and the resolution α can be expressed as follows.

Here, if we solve both of the above equations by assuming that Δ=40, α-l and the wavelength of the reading light is 0.67μ layer, we get NA=0.40 m=10, that is, the optical card 10 and Line sensor 118
This means that even if the relative distance to the pit changes by 40#L, a pit larger than the IJL can be read accurately. And if you have this degree of latitude,
A practical reading device can be constructed at relatively low cost.

FIG. 8 shows the signal processing system of the card reading device, which is conceptually shown in FIG. F9. In FIG. 8, the data signal read by the line sensor 116 is
After passing through a low frequency noise removal circuit 501 in the signal processing circuit 130 provided as necessary, the signal is converted into a pulse by a binarization circuit 132 and provided to a data read circuit 133.

This data read circuit 133 functions as a buffer circuit, so to speak, and reads the desired data based on the timing signal given from the timing generation circuit 134. Since the timing generation circuit 134 also provides a timing signal to the line sensor 11B, the reading operation of the data read circuit 133 is performed synchronously with the reading operation of the line sensor 118. The data obtained by the reading operation by the data read circuit 133 is given to the microcomputer 120, where the data contents are interpreted and necessary operations are performed, and the results are outputted from the printer 121.

Figure 1O is the microcomputer of Figures 8 and 9!
Of the operation contents in 20, only the data import operation is shown.

First, data is read in step S1, and this reading operation is performed two or more times. Then, when the same data is repeated twice or more, it is determined that the data is correct (step S2), and the data is stored in the memory (step S3).
If it is not correct, return to step Sl above.Next, the data written in the memory is searched for a data delimiter (step S4), but the data delimiter is determined by the data format used when recording data on the optical card 10. If a delimiter is found, the reading operation is either terminated or continued depending on whether the data has ended (step S5.SS).

As mentioned above, the card reading device 100 can read phone books, stock prices, etc.
An optical card that records book information such as securities reports, publication catalogs, periodicals such as medical and legal precedents, and books such as encyclopedias! Information is read from O, code converted, and stored in memory as information according to the code format. Then, it is input to the computer l via the interface 2. computer l
Then, the input compressed information is expanded to its original state, the accompanying audio information is converted to the format for the a playback device 7, and the processed data is sent to the display control circuit 4, and a predetermined screen is displayed on the display device 5. is displayed, and the corresponding information is selected by operating the keyboard 3. Therefore, various book information recorded on this optical card is displayed on the screen, and
The sound reproduction device 7 will explain the letter guide, supplementary explanation, etc. in a voice.

Here, the computer 1 can easily search for information recorded on this optical card. Further, necessary information is printed by a printer 9.

The line sensor of the card reading type 21100 is a CCD.
It consists of a photodiode, etc.

(Effects of the Invention) As described above, according to the 831M+6 information reproducing system of the present invention, books such as telephone directories, stock prices, securities reports, publication catalogs, periodicals such as medical precedents, etc. recorded on optical cards can be reproduced. Not only can information be displayed on the CR7 screen, but supplementary explanations are also output with voice, and necessary information is printed, making it possible for the user to obtain #word information that is very easy to understand. According to the SIi information playback system using the optical card of I11, it is possible to record data without the need for thick and heavy telephone directories or periodicals as in the past, and it is lightweight and compact, making it easy to carry and can be sent by mail. This makes it possible to create 3-piece information that is very economically effective. Moreover, SRS using the optical card of this invention
According to the information reproducing system, the data is encoded and recorded, so it has an excellent search function. and 1
For example, an optical card system serving as a telephone directory can be connected to a new media device having a CPU, and automatic dialing becomes possible. Another advantage is that the data on the optical card as a periodical can be directly input into the distribution optical database via the interface.

[Brief explanation of drawings]

：jS1 is a block configuration diagram showing an example of the cooking information 1 production system using the optical card of the present invention, and FIGS. 2 to 5
The figures are diagrams showing examples of optical cards used in this invention, respectively.
Figures 6 (A), (B) and 7th flash are each like this:Q
+! A configuration diagram showing an example of a card reading device used for TI,
8 and 9 are diagrams showing the internal configuration of the card reading device, and FIG. 10 is a flowchart showing an example of card reading operation. 1... Computer, 2.6... Interface. 3...Keyboard, 4...Display control circuit, 5...
CR7 display device, 7... sound playback device, 8... speaker, 9... printer, 10... optical card, 11...
・Printed portion, 12... Optical data recording area, 13...
Card base material, ■4... Optical recording material, 100... Card reading device, 103... Optical system, 110... Light source lamp, 11B... Line sensor. Applicant's agent Yu Yasugata Mika 4 Figure (,4) (f3) Akira 6 Figure

Claims (3)

[Claims] (1) A book using an optical card, characterized in that the book information recorded on the optical card is optically read and code-converted, and the code-converted character data, numerical data, and image data are displayed and reproduced. Information reproduction system. (2) A book information reproducing system using an optical card according to claim 1, wherein sound information accompanying the book information is outputted by a sound reproducing device. (3) A book information reproduction system using an optical card according to claim 1, wherein necessary information of the book information is printed and output.