Patent ID: 7437750

Claim:
A data transceiving system for causing a broadcasting station to transmit data to a plurality of television receivers through broadcasting and causing said television receivers to transmit response information to response information receiving equipment via a separate communication line, wherein each of said television receivers receive determining data for determining initial transmission scheduling time and retrial information containing a retrial period transmitted by said broadcasting station at the same time, and wherein the television receivers perform the following processing: 1) calculating the initial transmission scheduling time with a random number delay time at each of said receivers using the determining data for determining initial transmission scheduling time and storing the initial transmission scheduling time in memory; 2) transmitting the response information via a separate communication line when the initial transmission scheduling time comes; 3) when communication between the television receivers and the response information receiving equipment is unsuccessful, adding the retrial period to the initial transmission scheduling time to calculate retrial transmission scheduling time, and retransmitting the retrial information via a separate communication line at the calculated retrial transmission scheduling time; 4) when the retransmission of the retrial information has failed, calculating a subsequent retrial transmission scheduling time by adding the retrial period to the retrial transmission scheduling time and altering the condition of retrial transmission based on the subsequent retrial transmission scheduling time; and 5) repeating a process for retransmitting the retrial information via a separate communication line at the subsequent retrial transmission scheduling time until the retransmission of the retrial information is successful.