Patent ID: 7230943

Claim:
A wireless information processing system comprising: a wireless information processing apparatus comprising: a first start signal generator configured to generate a first start signal capable to request a wireless information recording medium having unique identification information to set a command slot; a second start signal generator configured to generate a second start signal capable to request the wireless information recording medium to transmit the identification information; a third start signal generator configured to generate a third start signal capable to request the wireless information recording medium to set a time slot; a transmitter capable to transmit the first to third start signals to a plurality of wireless information recording media located in a communication area; and a receiver capable to receive a response signal including the identification information transmitted by the wireless information recording medium, and the wireless information recording medium comprising: an identification information recorder in which the identification information is recorded; a receiver configured to receive the first to third start signals; a command slot setup unit configured to set the command slot; an accumulation unit configured to accumulate a number of times that the second start signal has been received; a transmitter configured to transmit the response signal at a response time interval defined by the time slot when the number of times that the second start signal is received matches a value of the command slot or when a value of the time slot is set; and a time slot setup unit capable to set the time slot when the response signal has not been appropriately received by the wireless information processing apparatus.