JP2687158B2 - Card display method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a card display method for information processing used in the fields of distribution, logistics, FA, OA, HA, service industry and the like.

(Prior Art) A semiconductor device as shown in FIG. 3 (A) as a card and a card reader / writer for information processing conventionally used in the fields of distribution, logistics, FA, OA, HA, service industry, etc.
An IC card in which 11 is embedded, a magnetic card in which a strip-shaped magnetic material 12 as shown in FIG. 3 (B) is attached to the surface thereof, and a card reader / writer thereof have been used. This IC
The card has been used, for example, to store a personal identification number (personal identification number) and a history of various transaction information, and to update the history information according to the transaction.
In this case, the user can not know the balance as it is, so insert the card into the card reader / writer and display the contents on the card reader / writer side to check the balance or the LCD display function of the card itself I used the method of making it a card with and displaying it there. In the case of a magnetic card, for example, when this is used as a retail prepaid card, the balance after the transaction is sequentially printed on the card surface at the positions shown in 13-1, 13-2 to 13-n of FIG. 3 (B). It was printed and displayed on.

Further, as a means for accessing the semiconductor element 11, a contact and a control circuit for supplying power and necessary signals to a contact connected to the semiconductor element 11 have been used.
As is well known, a magnetic head and its signal processing circuit have been used as a means for reading and writing the strip-shaped magnetic body. Further, a display means such as a printer or LCD is used as a means for displaying the recorded contents of a storage medium which cannot be read (visible) as it is (for example, a semiconductor or a strip-shaped magnetic body), and these read / write elements, processing circuits, and display means. The card reader / writer was constructed from the above.

(Problems to be solved by the invention) In the conventional example, when a cardholder tries to see the contents of a transaction, a general IC card cannot be seen as it is. It is inconvenient to bring in, and in the case of IC cards with LCD display function, there was a problem in bending strength and the card itself was extremely expensive. Further, in the case of a magnetic card, the transaction history is recorded on the surface of the magnetic card, but the printing space is limited, so much of it cannot be recorded, and it has been evaluated as unfavorable in terms of design and quality.

The object of the present invention is to eliminate the drawbacks of the prior art, allow the cardholder to check the contents at any time, and the card itself does not require any special electrical display means, and can be manufactured at various prices, thicknesses, and indications at extremely low cost. An object of the present invention is to provide an excellent card display method that has a degree of freedom in position and has extremely good display accuracy.

(Means for Solving the Problems) The card display method of the present invention is the energy-sensitive card of a card provided with a recording medium whose contents are not visible and an energy-sensitive material capable of writing / erasing a signal pattern and / or color. The first step of displaying a plurality of times of recordings on the conductive material, and after the recording is performed a predetermined number of times, the recordings after that are deleted by erasing the oldest recording among the recordings displayed at that time. And a second step recorded on the part.

(Operation) According to the present invention, the card itself does not require any special electrical display means, the number of writings is not limited, and a plurality of recordings can be displayed.

(Embodiment) An embodiment of the present invention will be described with reference to FIG. 1 and FIG.

FIG. 1 is an actual example of the card of the present invention. FIG. 1 (A) is a card in which a photosensitive material (photochromic material) display portion 3 is arranged on an IC card having a magnetic stripe, which has a semiconductor element 1 therein and has a strip-shaped magnetic body 2. For example, when this card is used for cashless shopping, the transaction balance can be displayed on the photosensitive material display unit 3. In addition, if this card is used for a credit card telephone, the magnetic strip 2
It becomes possible to make a call by using the personal identification code, and the display unit 3 can display the call frequency at that time and the total frequency or amount of the month. Figure 1 (B) shows
A photosensitive material (photochromic material) display unit 4 is arranged on a prepaid card having a strip-shaped magnetic body 2, and transaction history is sequentially recorded at positions 4-1 and 4-2 to 4-n.
An example is shown in which recording is performed up to n, and when it becomes full, the process returns to 4-1 and cyclically records. These cards are
In addition to the financial settlement related items mentioned above, transportation, communication, OA, FA,
It can be applied in all fields. Moreover, as an application for rewriting only the color, it is particularly effective, for example, for the purpose of determining the expiration date or the effective section.

FIG. 2 shows an example of a card reader / writer for a card having the magnetic + IC + photosensitive material (photochromic material) display section shown in FIG. 1 (A). Here, 5 is a magnetic read head for reading (or writing) a strip-shaped magnetic body, 6
Is a contact part for accessing the IC contact, and 7 is a light irradiation part for writing a symbol pattern and / or a color on the light-sensitive material (photochromic material) display part 3, which collects light having a wavelength of 400 to 750 nm. Like a laser printer, it uses a polygon mirror to scan in two dimensions for writing, and the writing accuracy is 0.12 mm. Erasure is also possible with an accuracy of 0.12 mm, but when erasing the entire display area at once, a method of irradiating the entire surface with erasing light is used without using a polygon scanning system. 8 is a scanning system control unit for writing and erasing, 9 is a microcomputer for controlling the magnetic reading head 5, contact unit 6, scanning system control unit 8 and communication control with an external personal computer, and 10 is a card reader.・ A writer. Although not shown in this example, if a two-dimensional image sensor is added to read the inside of the display of the photosensitive material (photochromic material) display section, the display content can be read and collated by the same principle as the OCR reader. Color can be detected by adding a photodiode with an optical filter for each of the three primary colors. The wavelength and intensity of light for writing and erasing differ depending on the photosensitive material (photochromic material) used, but here light having a peak at 500 nm is used. Note that writing and erasing can be performed using energy such as heat and ultrasonic waves in addition to electromagnetic wave energy such as light. Further, in this embodiment, the reader / writer corresponding to FIG. 1 (A) is shown, but it is also possible to use it for the card of FIG. 1 (B) by combining the magnetic reading head 5 and the light irradiation section 7. However, the embodiments shown herein are not meant to be limiting.

The display content can be a pattern such as a bar code, and various applications can be made by combining with a bar code reader.

(Effects of the Invention) According to the present invention, the card itself does not require a special electrical display means, the number of times of writing is not limited, and more than one record can be displayed. A highly convenient and highly reliable card display method can be provided, and its industrial effect is extremely high.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a card of the present invention, FIG. 2 shows an embodiment of a card reader / writer using the present invention, and FIG. 3 shows an example of a conventional card. 1 ... Semiconductor element, 2 ... Strip magnetic material, 3,4 ... Photosensitive material (photochromic material) display section, 5 ... Magnetic reading head, 6 ... IC contact section, 7 ... Photosensitive material (Photochromic material) Writing light irradiation part, 8 ...
... Scanning system control unit for writing and erasing, 9 ... Microcomputer, 10 ... Card reader / writer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-55199 (JP, A) JP-A-63-225885 (JP, A) Actually-opened Shou 61-105178 (JP, U)

Claims (2)

(57) [Claims] 1. A first card for displaying a plurality of recordings on the energy-sensitive material of a card provided with a recording medium whose contents are not visible and an energy-sensitive material capable of writing / erasing a signal pattern and / or color. Steps of
A card display method including a second step in which after the recording is performed a predetermined number of times, the oldest recording among the recordings displayed at that time is erased and the erased portion is recorded. . 2. The card display method according to claim 1, wherein a plurality of recordings are recorded in different stages.