Patent ID: 7916679

Claim:
A wireless network system comprising: a wireless communication instrument; and a portable electronic instrument; the wireless communication instrument including: an instrument ID storage section that stores an instrument ID of the wireless communication instrument; a network ID storage section that stores, as a wireless network ID, data obtained by encoding data including at least specific authenticity determination data and given control data for controlling the portable electronic instrument to be decoded using the instrument ID stored in the instrument ID storage section; and a transmission section that periodically transmits a beacon signal including the instrument ID stored in the instrument ID storage section and the wireless network ID stored in the network ID storage section, in accordance with a wireless communication standard that specifies that a wireless instrument transmits an instrument ID of the wireless instrument as an instrument ID included in transmission data; and the portable electronic instrument including: a reception section that receives the beacon signal; a decoding section that decodes the wireless network ID included in the received beacon signal using the instrument ID included in the received beacon signal; an authenticity determination section that determines whether or not the data decoded by the decoding section includes the same data as the specific authenticity determination data: a period determination section which determines whether or not a present date is within the valid period indicated by the period data included in the data decoded by the decoding section; and a control section that executes control based on the control data included in the decoded data when the authenticity determination section has determined that the data decoded by the decoding section includes the same data as the specific authenticity determination data; wherein the network ID storage section of the wireless communication instrument stores data obtained by encoding data including at least the authenticity determination data, the control data, and period data indicating a valid period of control based on the control data so that the data can be decoded using the instrument ID as the wireless network ID; and the control section disregards control based on the control data when the period determination section has determined that the present date is not within the valid period, and executes control based on the control data when the period determination section has determined that the present date is within the valid period and the authenticity determination section has determined that the data decoded by the decoding section includes the same data as the specific authenticity determination data.