Method for displaying and reading information code for commercial transaction

• US 6,997,384 B2
• Filed: 07/09/2003
• Issued: 02/14/2006
• 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
• Primary Examiner(s): Lee, Michael G.
• Assistant Examiner(s): LE, UYEN CHAU N
• Application Number:
  US10/614,900
• Publication Number:
  US 20040012569A1
• Time in Patent Office: 951 Days
• Field of Search: 235/454, 235/462.01, 235/462.09, 235/462.1, 235/383, 235/375, 235/354, 235/472.01
• US Class Current: 235/454
• 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 optical information reader for settling a commercial transaction reads and decodes 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 comprising:

displaying a plurality of images in succession, each of the plurality of images including an information code being common to the plurality of images, the information code being positioned in a different display area for the each of the plurality of images than for others of the plurality of images; and

optically reading the information code from one of the displayed plurality of images, a part of the information code displayed in a portion of the display other than an unrecognizable portion, the information code being obtained when the part of the information code from another of the displayed plurality of images, the another part of the information code displayed in the unrecognizable portion, is not optically read.

2. The method according to claim 1, wherein the displaying the plurality of images includes forming each of the plurality of images from an original image by rotating the original image by a predetermined angle.

3. The method according to claim 1, wherein the displaying the plurality of images includes forming each of the plurality of images from an original image by moving the original image in parallel by a predetermined distance.

4. The method according to claim 1, wherein the displaying the plurality of images includes forming each of the plurality of images from an original image by changing a size of the original image.

5. The method according to claim 1, wherein the optically reading the information code includes:

examining a brightness of each of the displayed plurality of images;

judging that the part of the each of the displayed plurality of images is displayed in the unrecognizable portion when the part of the each of the displayed plurality of images has a brightness having one of a greater brightness than a first predetermined brightness and a lesser brightness than a second predetermined brightness; and

discarding partial information obtained from the part of the each of the plurality of images.

6. The method according to claim 1, wherein the information code optically read includes an information code used for a commercial transaction.

7. The method according to claim 1, wherein the displaying the plurality of images includes displaying the each of the plurality of images according to a predetermined time interval.

8. A method comprising:

dividing an information code into a plurality of partial information codes;

displaying a plurality of partial images in succession indicating the plurality of of partial information codes respectively such that each of the plurality of partial images includes a code indicating one or more of a dividing number and a display order of the each;

reading optically the plurality of partial information codes indicated in the displayed plurality of partial images; and

combining the partial information codes to obtain the information code.

wherein the reading optically the plurality of partial information codes includes obtaining a part of a one of the plurality of partial information codes indicating a one of the plurality of partial images, the part displayed in a portion other than an unrecognizable portion when the part of another of the plurality of partial information codes indicating another of the plurality of partial images displayed in the unrecognizable portion is not optically read.