Patent ID: 6424819
Filing Date: 2002-07-23
Classification: G01S,G08B

Abstract:
A method of wireless remote transmission and reception of code information by users to seek and identify one another, wherein, in a portable computerized device combined with a radio transceiver, data representing at least one array of generated information is inputted into the memory; the data in each information array is then converted into a personal code; at least one personal code is transmitted in the form of pulsed radio signals through the propagation medium to be received by the radio transceiver of at least one other portable computerized device operating within the range of the radio transceiver of the first device; the pulsed code radio signals emitted by the radio transceivers of the other portable computerized devices are received; the codes received are compared with at least one personal code; on coincidence of at least one of the codes received and the personal code in at least a majority of the data, the received data corresponding to that code is decoded and outputted for visual or audio perception of the information array corresponding to that code; on coincidence of the information array received and the information array stored in the memory, a pulsed coincidence radio signal is transmitted in the coincidence code to establish direct contact with the user of that code, and a response pulsed personal code radio signal confirming the establishment of direct contact is received for the users to identify one another, characterized in that, after the pulsed personal code radio signals confirming the establishment of direct contact have been received, the users switch their radio transceivers to a direct communication mode to enable the users to communicate with each other, while in the absence of coincidence between the codes received and the personal code, these codes are inputted temporarily into the memory and pulsed radio signals of these codes are emitted, at least once or several times during a specified time interval, into the propagation medium, the pulsed radio signals of the codes that do not coincide with the personal code being transmitted at least during the absence of a pulsed radio signal carrying a code corresponding to the personal code in at least a majority of data.