Method for displaying and reading information code for commercial transaction

• US 20040012569A1
• Filed: 07/09/2003
• Published: 01/22/2004
• Est. Priority Date: 07/19/2002
• Status: Active Grant

• Current Assignee: Denso PS Corporation (DENSO Corporation)
• Original Assignee: Denso PS Corporation (DENSO Corporation)
• Inventors: Hara, Masahiro
• Granted Patent: US 6,997,384 B2
• Time in Patent Office: Days
• US Class Current: 345/169
• CPC Class Codes: G06K 1/121 by printing code marks applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26
• CPC Class Codes: G06K 19/06018 one-dimensional coding
• CPC Class Codes: G06K 7/1095 the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like
• CPC Class Codes: G06Q 30/06 Buying, selling or leasing transactions

Abstract

An object of the present invention is for an optical information reader for settling a commercial transaction to read and decode with certainty a quick response (QR) code displayed on a buyer'"'"'s mobile telephone display. A QR code 11 is displayed on the display a plurality of times at a prescribed time interval. The QR code is rotated by 90□ every time. Therefore, a part of the QR code which could not have been decoded due to a mirror reflection, stains or scratches on the display can be decoded at the second, third or fourth display, because the QR code 11 is displayed four times at different angles.

Claims

1. A method for displaying an image of information code for a commercial transaction, comprising the steps of:

displaying said image;

changing said image; and

displaying the changed image.

wherein;

said images are displayed a plurality of times at a prescribed time interval; and

each of said images is moved by a prescribed quantity.

2. The method according to claim 1, wherein said changing step is a step for rotating said image.

3. The method according to claim 1, wherein said changing step is a step for moving said image in parallel.

4. The method according to claim 1, wherein said changing step is a step for changing a size of said image.

5. The method according to claim 1, which further comprises the step of optically reading each of said images,

wherein when there are one or more displayed images which includes an unrecognizable part, said unrecognizable part is compensated by other displayed image wherein said unrecognizable part is clearly displayed.

6. The method according to claim 1, wherein said image is a partial image divided from an original image of an information code for said commercial transaction.

7. The method according to claim 6, wherein each of said partial images includes a code indicating a dividing number or code indicating an order for displaying said partial images.

8. The method according to claim 6, which comprises the steps of:

displaying said image;

changing said image; and

displaying the changed image.

wherein;

said partial images are displayed a plurality of times at a prescribed time interval; and

each of said partial images is moved by a prescribed quantity.

9. The method according to claim 8, wherein said changing step is a step for rotating said partial images.

10. The method according to claim 8, wherein said changing step is a step for moving said partial images in parallel.

11. The method according to claim 8, wherein said changing step is a step for changing a size of said partial images.

12. The method according to claim 6, which further comprises the steps of:

reading optically said partial images;

decoding said partial images; and

combining the decoded partial images in order that said original image is decoded.

13. The method according to claim 12, wherein when there are one or more displayed partial images which includes an unrecognizable part, said unrecognizable part is compensated by other displayed partial image wherein said unrecognizable part is clearly displayed.