Abstract: The invention is to provide a wireless digital communication system and method thereof using a first protocol layer, a second protocol and a third protocol layer for constructing a packet, wherein the first protocol layer is used to convert the packet into signals transmitted by a transmission medium, and the second protocol layer having addressing capability provides routing and switching functions necessary to move data from any two nodes in a network, and the third protocol layer is used to build a pairing mechanism between intermediary nodes in the network and between the original network with an external system on the packet. The three protocol layers of the present invention is designed according to a pairing mechanism such that the wireless product using the pairing mechanism can use the simplified protocol of the present invention instead of the conventional redundant communication protocol model.

Abstract: The present invention provides a system and method capable of implementing a two-way audio communication via a web browser on the IP-based web environment. When a web browser linking to a web server provides a request for transmitting audio data to the web server, the web server will send an ACK/or NAK command responding to the request based upon a current status itself to the web browser. When the ACK command is sent to the web browser, a plug-in program is then transmitted to the web browser, and thereby starting a two-way audio communication therebetween. Then, voice information from a user using the web browser is periodically recorded to an audio file by the plug-in program and transmitted to the web server, and played by a sound player integrated with the web server. The web server then sends audio data to the web browser in response to the voice information.

Abstract: A method of searching an IP address is provided. A user interface broadcasts an ICMP request packet to an internet protocol (IP) based network. The ICMP request packet includes a first message type undefined before, a first code number and host information to be searched at the data portion. An IP-related device, thinking the ICMP request packet destined for it, sends out an ICMP reply packet to the user interface. The ICMP reply packet includes a second message type undefined before, a second code number and the host information of the IP-related device at the data portion. The user interface thus obtains an IP address of the IP-related device in accordance with the information of the ICMP reply packet.