Information processing program, reception program, and information processing apparatus

1. A receiving method comprising:

setting a first exposure time for at least one exposure line of exposure lines in an image sensor, and setting a second exposure time for a remainder of the exposure lines in the image sensor, the second exposure time being shorter than the first exposure time;

causing the image sensor to capture an image of a light transmitter, to obtain a normal image from the at least one exposure line with the first exposure time, and to obtain a bright line image from the remainder of the exposure lines in the image sensor with the second exposure time, the bright line image including a plurality of bright lines, each of which corresponds to a different one of the remainder of the exposure lines in the image sensor; and

obtaining information by decoding a pattern of the plurality of the bright lines included in the obtained bright line image.

2. The receiving method according to claim 1 ,

wherein the normal image is displayed during a period in which the information is obtained by decoding the pattern of the plurality of the bright lines.

3. The receiving method according to claim 1 ,

wherein the setting comprises:

setting one of the first exposure time and the second exposure time for odd-numbered exposure lines in the image sensor, and

setting a remaining one of the first exposure time and the second exposure time for even-numbered exposure lines in the image sensor.

4. The receiving method according to claim 3 ,

wherein the setting comprises:

setting the remaining one of the first exposure time and the second exposure time for the odd-numbered exposure lines after setting the one of the first exposure time and the second exposure time for the odd-numbered exposure lines, and

setting the one of the first exposure time and the second exposure time for the even-numbered exposure lines after setting the remaining one of the first exposure time and the second exposure time for the even-numbered exposure lines.

5. The receiving method according to claim 1 ,

wherein the setting comprises:

setting the first exposure time and the second exposure time alternately for the odd-numbered exposure lines and,

setting the second exposure time for the even-numbered exposure lines when the first exposure time is set for the odd-numbered exposure lines, and setting the first exposure time for the even-numbered exposure lines when the second exposure time is set for the odd-numbered exposure time.

6. The receiving method according to claim 1 ,

wherein the setting comprises:

a preset mode is switchable between a normal imaging priority mode and a visible light imaging priority mode,

when the preset mode is the normal imaging priority mode, a total number of exposure lines for which the first exposure time is set is greater than a total number of exposure lines for which the second exposure time is set, and

when the preset mode is the visible light imaging priority mode, the total number of exposure lines for which the first exposure time is set is less than the total number of exposure lines for which the second exposure time is set.

7. An apparatus comprising:

a processor; and

a memory storing a computer program, the computer program causing the processor to execute operations including:

setting a first exposure time for at least one exposure line of exposure lines in an image sensor, and setting a second exposure time for a remainder of the exposure lines in the image sensor, the second exposure time being shorter than the first exposure time;

causing the image sensor to capture an image of a light transmitter, to obtain a normal image from the at least one exposure line with the first exposure time, and to obtain a bright line image from the remainder of the exposure lines in the image sensor with the second exposure time, the bright line image including a plurality of bright lines, each of which corresponds to a different one of the reminder of the exposure lines in the image sensor; and

obtaining information by decoding a pattern of the plurality of the bright lines included in the obtained bright line image.

8. A non-transitory recording medium having a computer-program stored thereon, the computer program causing a processor to execute operations comprising:

setting a first exposure time for at least one exposure line of exposure lines in an image sensor, and setting a second exposure time for a remainder of the exposure lines in the image sensor, the second exposure time being shorter than the first exposure time;

causing the image sensor to capture an image of a light transmitter, to obtain a normal image from the at least one exposure line with the first exposure time, and to obtain a bright line image from the remainder of the exposure lines in the image sensor with the second exposure time, the bright line image including a plurality of bright lines, each of which corresponds to a different one of the remainder of the exposure lines in the image sensor; and

obtaining information by decoding a pattern of the plurality of the bright lines included in the obtained bright line image.