JP2014002452A - Method for displaying image on face display unit of non-contact ic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means for freely setting and displaying a re-writable standby image as a background of character information as well as displaying information stored in an IC chip as character/image information, on a face display unit of a non-contact IC card.SOLUTION: There is provided a method for displaying an image on a face display unit of an NFC-compatible non-contact IC card from an NFC-compatible portable telephone. The method includes: installing face application software in the portable telephone; starting up the face application software of the portable telephone; determining image data to be displayed on the face display unit, on the portable telephone; inputting the image data to a memory of the non-contact IC card by using an NFC function from the portable telephone; and displaying the image on the face display unit of the non-contact IC card by using an NFC function.

Description

  The present invention relates to a technique for easily creating and displaying a desired background image on a ticket surface display unit of a non-contact IC card in addition to a predetermined item.

  Non-contact IC cards are basically those in which a transmitting / receiving antenna and an IC chip for recording information are electrically connected and embedded in a paper base or plastic base. Is increasing. Non-contact IC cards are widely used mainly for purchasing goods and managing entry / exit management of transportation facilities because of the convenience of sending and receiving information just by holding them at a predetermined distance. Improvement is required.

  One such request is to display information held in the IC chip on a card face display unit provided on the card face (Patent Document 1). The contents to be displayed include items according to the usage of each card, such as balance display, but in addition to simply displaying the predetermined items in a plain background, the predetermined items such as a mobile phone standby screen are displayed. There is a request to display in a background image. Furthermore, regarding the background image, there is a demand for displaying not only the existing design but also the original image for the ticket face.

  For this purpose, it is necessary for the owner of the IC card to be able to freely design and set the ticket display image. As such a technology, there is an IC card that can be exchanged by attaching a design sticker to a predetermined position of a display unit. However, the image is printed on a sticker and cannot be designed freely. Depending on the thickness of the sticker, a card that has a chance to be used in a contact type, such as a regular commute, is passed through a reader / writer. The seal may get caught in the machine and cause trouble.

  Further, the non-contact IC card does not have an input means such as a key input unlike a cellular phone even if it has a display unit, so that the function of reading out image data from a memory and displaying it on the IC card itself Cannot be granted.

  There is NFC (Near Field Communication) as a wireless communication technology to which attention is paid in this regard. NFC is an international standard for short-range wireless communication in which a communication distance using a frequency band of 13.65 MHz is limited to about 10 cm. Its feature is a technology that allows two-way data communication with just "holding up", and it is possible to provide compatibility between devices with different communication standards. For example, by simply holding a mobile phone equipped with NFC over a television equipped with NFC, a picture recorded on the mobile phone can be displayed on the television screen. In addition, you can print photos recorded on a portable camera simply by bringing the mobile phone close to a printer equipped with NFC.

  In this way, devices equipped with NFC can exchange various data by simply holding the devices close to each other, and are compatible with various non-contact IC card and IC tag standards, and have the same functions as those. Can be fulfilled. That is, a device such as a cellular phone equipped with NFC can read and write various non-contact IC cards and IC tags as a reader / writer.

  On the other hand, the bill surface display part on the IC card is composed of a display element that can be bent thinly and a driver for controlling display contents, but the display part can be electrically rewritten and can be used without power supply. Memory characteristics are necessary so that the display can continue. As a low power consumption and memory device, an electronic paper type can be mentioned.

Japanese Patent Laid-Open No. 10-154215 JP 2010-257159 A

  In view of the distribution status of devices that meet the above NFC standard, the present invention provides a background of character information in addition to displaying information contained in the IC chip as character / image information on the ticket surface display portion of the non-contact IC card. An object was to provide means for freely setting and displaying a rewritable standby image.

The invention described in claim 1 for achieving the above object is a method of displaying an image on a surface display unit of an NFC-compatible non-contact IC card from an NFC-compatible mobile phone,
Installing the ticket application software on the mobile phone,
The process of launching mobile phone ticket application software;
Determining image data to be displayed on the bill display unit on the mobile phone;
Inputting image data from the mobile phone to the memory of the non-contact IC card by the NFC function;
And a step of displaying the image on the ticket surface display portion of the non-contact IC card by the NFC function.

  According to a second aspect of the present invention, the image data is any one of obtaining image data from WEB, obtaining from a memory of a mobile phone, or obtaining from a photographic image taken with a camera. It is set as the image display method of the non-contact IC card ticket surface display part of Claim 1 characterized by the above-mentioned.

  According to a third aspect of the present invention, the image data is stored in a non-secure area of the FFPROM in the non-contact IC card memory. The non-contact IC card ticket surface according to the first or second aspect This is an image display method for the display unit.

  Invention of Claim 4 is set as the image display method of the non-contact IC card ticket display part of any one of Claim 1 to Claim 3, wherein the ticket display part is an electronic paper. Is.

  According to the present invention, there is an effect that desired character information, image information, and the like can be freely rewritten and displayed any number of times using a mobile phone on a ticket surface display portion of a non-contact IC card. Usually, since the face image is plain / patternless or identical, it is not possible to identify which card is own, but if the image is unique and created by the user, it can be easily identified.

  Compared to pasting a design sticker on the ticket display, the display image is rewritten electronically, increasing the degree of freedom of display content and format design, and the card thickness does not change, causing trouble such as being caught in a reader. It will never be. A special reader / writer is not required, and as long as the NFC specification is satisfied, an image can be displayed on the ticket surface display unit only with a mobile phone or a smartphone.

  Since the bill surface display unit has a certain degree of flexibility and uses an electronic paper with a memory property, the same image can be displayed for a long time without power supply.

It is an example of a non-contact IC card provided with a bill surface display part, and is a front view for explaining the appearance of the card. It is a figure of the cross-sectional view which illustrates a mode that the position of the colored fine particles in the microcapsule of the electrophoretic electronic paper is reversed by an electric field. It is a flowchart explaining the procedure which displays an image on an electronic paper type ticket surface display.

  When a device equipped with an NFC standard compliant IC chip or a non-contact IC card is brought close to each other within a distance of 10 cm, bidirectional communication becomes possible at a speed of 106 Kbps to 424 Kbps. In addition to reading and writing data, text, images, movies, data, etc. can be exchanged by simply holding it over. For example, when an image taken with a mobile phone equipped with an NFC chip is transferred to a personal computer equipped with an NFC chip, data can be transferred by bringing the devices closer to each other.

  There are various communication standards for non-contact IC cards. Until now, IC cards with different standards could not be communicated with a single reader / writer. However, compatibility can be achieved by mounting the NFC chip on the reader / writer side. For example, a non-contact IC card “Felica” popular in Japan and a non-contact IC card “Mifara” (ISO14443 Type A) widely used in the world can be read and written with one reader / writer. Is.

The present invention is capable of displaying a standby image on a ticket surface display portion of a non-contact IC card with a built-in NFC chip and a user's favorite image using a mobile phone or a smartphone that satisfies the NFC standard having the above-described features. System.
FIG. 1 shows an example of a non-contact IC card 1 provided with a bill surface display unit 2 in a top view. The ticket surface display unit 2 includes a display area 4 in which predetermined items such as a balance are described and an image area 3 in which an image is displayed.

  The image in the image display area 3 is displayed on the ticket surface display unit 2 as a background or a standby image, but the ticket surface display unit 2 needs to be composed of electronic paper. That is, once an image is written, it must be displayed for a long time unless rewritten. A typical display technology for electronic paper is the electrophoresis method, which was developed by E Ink.

  In the electrophoresis method, as shown in FIG. 2, white fine particles 14 and black fine particles 15 having electric charges are dispersed in a microcapsule 13 containing a fluid (oil) 16, and the white fine particles 14 and black fine particles 14 are dispersed by an electric field from the electrode 12. White and black are displayed by moving the fine particles 15 in the capsule. Although it is also called a particle movement type, gradation display is also possible when white fine particles 14 and black fine particles 15 are mixed by halfway voltage application. In a similar technique, there is a Bridgestone system in which white and black particles are moved by an electric field in the air instead of the fluid (oil) 16.

  Specifically, in the former, white and black pigment particles, which are positively and negatively charged, are stored together with oil in a transparent microcapsule 13 having a diameter of about 40 μm, and only one layer of the capsule is opposed by the binder 17. They are arranged between the two narrow electrode plates 12 without a gap. One side of the electrode serving as the display surface is made of a transparent electrode such as ITO, and the opposite electrode is formed of a small rectangular electrode having a required display resolution. As the electrode plate, a film substrate 11 on which an ITO electrode 12 is patterned is used.

  An electric field is generated between the two electrodes 12 by applying a voltage from an external control circuit, and the positively and negatively charged white and black pigment particles 14 and 15 migrate in the oil and are selected according to any voltage. Black and white display is performed by collecting colored pigment particles on the display surface side of the capsule. A black and white display is selected for each pixel created by the minute electrodes. Since the pigment particles cannot easily move in the oil even when the voltage is turned off, the black and white pattern is retained for a long time and can be read like a printed matter.

  Similar to liquid crystal type (cholesteric liquid crystal or ferroelectric liquid crystal) electronic paper, no power is required to hold an image, and little power is consumed when rewriting an image. In the electrophoresis method, display quality comparable to that of copy paper printed and output by newspaper or laser printer is obtained. When the reflectance and contrast ratio of electronic paper, newspaper, and copy paper are compared, they are about 40%: 65%: 80%, 10: 1, 7: 1, and 20: 1, respectively. Colorization is also possible by using a color filter or using colored fine particles.

  Electronic paper is not as sensitive to intrusion of water vapor as liquid crystal displays and organic EL, and because it is a reflective type, the back surface may be opaque, originally has a wide viewing angle, and there is no need for a backlight. If the base material is made of a plastic film, it can be used as a display for bill display such as an IC card. Other types of electronic paper include types that use cholesteric alignment with memory properties or ferroelectric liquid crystals in a reflective manner that does not require a backlight. There is currently a problem to use as.

  Next, a schematic procedure for displaying an image on the bill surface display unit 2 of the non-contact IC card 1 is shown as a flowchart in FIG. 3, but this point will be described in a little more detail.

  First, the ticket face application software and related software are installed in an NFC-compatible mobile phone or smartphone (FIG. 3A). Once installed, it can be called and used repeatedly.

Ticket application software
(1) A function for selecting image data to be displayed on a ticket from a photograph taken with a camera attached to a mobile phone or an image data group acquired from WEB,
(2) A function for compressing and editing the selected image data so as to fit the bill display section,
(3) A function for outputting or erasing image data to a predetermined memory of the IC card,
(4) A function for displaying the image data of the memory on the bill display body,
Etc. software having

Next, initial setting of an NFC-compatible IC chip mounted on a non-contact IC card will be described. The memory of this IC chip is divided into a CPU, a co-processor, a ROM, a RAM, and an EEPROM area, and stores predetermined programs, data, and the like.
It is necessary to secure an area for storing the ID corresponding to the ticket application software installed in the mobile phone as AIDxxx and an area for storing a plurality of image data usable on the ticket.

  The EEPROM is divided into a secure area and a non-secure area, and confidential information provided in a normal non-contact IC card needs to be stored in the secure area. However, the image data may be a non-secure area. The image data is captured from the non-secure area by the display driver provided in the electronic paper 1 and displayed in the image display area 3 of the ticket surface display unit 2. From the card information, only predetermined items are taken from the secure area and displayed in the predetermined character information display area 4.

  An example of a non-contact IC card having an electronic paper type bill face display unit is shown in FIG. 1, but a standby image is displayed as a background of the bill face display unit, and card information such as a balance is displayed at a predetermined position in the standby image. Is. If you use a card to purchase a product, the background image will not change, but only the amount field will change.

Next, a procedure for displaying a standby image on the ticket surface display unit 2 under the above-described initial setting / preparation will be described (here, a case where an image for displaying a ticket surface is stored in a non-secure area will be described).
(1) If the ticket application software is not installed on the mobile phone, install it (FIG. 3 (a)). The registration ID is registered as AIDxxx.
(2) The ticket surface application software is started up using the registered AIDxxx as a key (FIG. 3B).
(3) An image pattern for bill display is determined (FIG. 3C).
The image pattern is
3-1. Search for images from WEB.
3-2, search from the memory image of the mobile
3-3 Search from images stored on the IC card.
(4) The data size, inclination color tone, etc. are adjusted so that the selected image data matches the bill display (FIG. 3 (d)).
(5) After designating the non-secure area of the writing destination, hold the mobile phone over the non-contact IC card. With the NFC function, communication is started between the mobile phone and the card, and the selected ticket surface display image data is output to the non-secure area of the IC card (FIG. 3 (e)).
(6) An image is displayed on the ticket surface display unit made of electronic paper (FIG. 3 (f)).
6-1 Send display command.
6-2. The designated image data is moved from the non-secure area to the display driver.
6-3, an image and predetermined items are displayed on the electronic paper.

  Since the operation (6) takes time, it is necessary to pay attention to the relative positional relationship between the card and the mobile phone. If it is difficult to rewrite without permission, the authentication act may be put in one of the above processes.

  According to the above procedure, the image data stored on the mobile phone can be displayed on the ticket surface display portion of the non-contact IC card.

1. Non-contact IC card 2, bill display unit 3, image (display area)
4. Display area 10 for character information (balance, etc.), electronic paper 11, film substrate 12, electrode 13, microcapsule 14, white colored fine particles 15, black colored fine particles 16, oil 17, binder

Claims (4)

A method for displaying an image from a NFC-compatible mobile phone on a ticket surface display portion of an NFC-compatible non-contact IC card,
Installing the ticket application software on the mobile phone;
The process of launching mobile phone ticket application software;
Determining image data to be displayed on the bill display unit on the mobile phone;
Inputting image data from the mobile phone to the memory of the non-contact IC card by the NFC function;
And a step of displaying the image on a non-contact IC card sheet display unit. An image display method for a non-contact IC card sheet display unit.   2. The image data according to claim 1, wherein the image data is acquired from WEB, acquired from a memory of a mobile phone, or acquired from a photographic image taken by a camera. The image display method of a non-contact IC card ticket surface display part.   3. The image display method for a non-contact IC card ticket display unit according to claim 1, wherein the image data is stored in a non-contact IC card memory. The image display method of a non-contact IC card ticket display unit according to any one of claims 1 to 3, wherein the ticket display unit is electronic paper.