OFDM signal transmission system, portable terminal and E-commerce system

1. A portable terminal, comprising:

a receiver configured to receive data;

a barcode former configured to form barcode data from the received data, the barcode data including a plurality of display barcodes, information representing the display order of the plurality of display barcodes, information representing a total number of the plurality of display barcodes and information representing an end of the display of the plurality of display barcodes, each of the display barcodes is displayed with predetermined non-display periods between display periods of the display barcodes;

a display configured to display, in order, the display barcodes included in the barcode data; and

a detector configured to detect light or a signal from a barcode reader,

wherein the display is switched, from the currently displayed display barcode to the display barcode next in the display order, according to the detection result of the detector.

2. The portable terminal according to claim 1 , wherein the light or the signal includes information from which the detector can determine that the barcode reader has completed reading of the displayed barcode.

3. A method for performing a reservation process with a portable terminal via a communication network in an electric commerce system, the method comprising:

providing ticket information and a start time to the portable terminal during the reservation process, the ticket information permitting a user of the portable terminal to enter a facility associated with the ticket information, the start time related to a time from which the facility is scheduled to start, at least one barcode being displayed on a display screen of the portable terminal representing the ticket information;

controlling the portable terminal to notify the user of the portable terminal a predetermined time before the start time by using the start time without using a location of the facility;

scanning the at least one display barcode, displayed on the display screen, at the associated facility,

setting a flag indicating prohibition of use of the ticket information to “ON” when the at least one display barcode is scanned;

judging whether the user of the portable terminal reenters the facility within a predetermined time; and

changing the flag from “ON” to “OFF” when the user of the portable terminal reenters the facility within the predetermined time.

4. The method according to claim 3, wherein the ticket information comprises an airplane ticket, and the facility comprises an airplane.

5. The method according to claim 3, wherein the ticket information comprises a movie ticket, and the facility comprises a theater at which a movie is shown.

6. The method according to claim 3, wherein the ticket information comprises a music concert ticket, and the facility comprises a music concert hall at which a musical performance takes place.

7. The method according to claim 3, wherein the ticket information comprises an entrance ticket for an amusement park, and the facility comprises performance/ride at the amusement park.

8. The method according to claim 3, further comprising judging whether a time is outside a range of the start time.

9. A method for performing a entrance process, the method comprising:

setting a flag indicating prohibition of use of a ticket information to “ON” when a display barcode is scanned, the ticket information permitting a user of a portable terminal to enter a facility, the display barcode representing the ticket information and being displayed in a display of the portable terminal;

judging whether the user of the portable terminal reenters the facility within a predetermined time; and

changing the flag from “ON” to “OFF” when the user of the portable terminal reenters the facility within the predetermined time,

wherein the portable terminal is operative, to perform a reservation process, in which the ticket information and a start time are received at the portable terminal during the reservation process, the start time related to a time from when the facility is scheduled to start, to control the display to display the display barcode, the display barcode is scannable at the associated facility and to control the portable terminal to notify the user of the portable terminal a predetermined time before the start time by using the start time without using a location of the facility.

10. The method according to claim 9, wherein the ticket information comprises an airplane ticket, and the facility comprises an airplane.

11. The method according to claim 9, wherein the ticket information comprises a movie ticket, and the facility comprises a theater at which a movie is shown.

12. The method according to claim 9, wherein the ticket information comprises a music concert ticket, and the facility comprises a music concert hall at which a musical performance takes place.

13. The method according to claim 9, wherein the ticket information comprises an entrance ticket for an amusement park, and the facility comprises performance/ride at the amusement park.

14. The method according to claim 9, further comprising judging whether a time is outside a range of the start time.