| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a transmission method of position information and a reception method of the position information transmitted in the transmission method without increasing communication amount and changing programs and settings of an existing data relay device, in a network where communication using a communication protocol such as an IP (Internet Protocol) is performed continuously.SOLUTION: In a specific portion of a transmission unit, a differential value of the specific portion (specific field) of a plurality of transmission units received is acquired. The specific field which can store the differential value is defined as a field in which a different value is stored for each transmission unit with an existing protocol.</p> |
