Information processing device, communication method, and program product

A communication method for a first information processing device and a second information processing device that are configured to perform non-contact communication with one another in a plurality of format generations, comprising:

• transmitting repeatedly from the first information processing device, at a specified time interval, one combination packet that is created such that it includes a first packet of first data that is compatible with a first format generation of the plurality of format generations, and a second packet of second data that is compatible with a second format generation of the plurality of format generations, the first packet in the combination packet including a first preamble and a first polling command packet, both in the first format generation, and the second packet in the combination packet including a second preamble and a second polling command packet, both in the second formation generation,
• wherein the first packet included in the combination packet indicates to a single recipient of the combination packet that the first information processing device is capable of performing the non-contact communication at a first communication speed and the second packet included in the combination packet indicates to the single recipient of the combination packet that the first information processing device is capable of performing the non-contact communication at a second communication speed different from the first communication speed;
• receiving, by the second information processing device, the repeatedly transmitted one combination packet, after the second information processing device has entered an area where the non-contact communication is possible;
• and
• transmitting, by the second information processing device, a response packet to the first information processing device in response to a command that is indicated by one of the first packet and the second packet, within the received one combination packet, that is in a format that is compatible with the second information processing device,
• wherein the transmitted one combination packet contains information on a slot range within which the response packet that will be transmitted by the second information processing device configured to allocate.

A non-transitory computer readable storage medium having stored thereon a program having instructions that when executed by a processor, causes the processor to perform a method comprising:

• setting a packet structure of a packet that will be transmitted repeatedly at a specified time interval when non-contact communication is performed in a plurality of format generations, and
• setting a structure of one combination packet that includes a first packet of first data that is compatible with a first format generation of the plurality of format generations, a second packet of second data that is compatible with a second format generation of the plurality of format generations, the first packet in the combination packet including a first preamble and a first polling command packet, both in the first format generation, and the second packet in the combination packet including a second preamble and a second polling command packet, both in the second formation generation,
• wherein the first packet included in the combination packet indicates to a single recipient of the combination packet that an information processing device is capable of performing the non-contact communication at a first communication speed and the second packet included in the combination packet indicates to the single recipient of the combination packet that the information processing device is capable of performing the non-contact communication at a second communication speed different from the first communication speed, and
• wherein the setting of the structure of the one combination packet includes setting the first packet to express a specified command in a first form, and the second packet to express the specified command in the second form.