Abstract: A control system and a control method are provided. The method includes: controlling, by a primary host, a plurality of clients actively; coupling a secondary host to the primary host through a synchronization link and a transmission link different from the synchronization link, where the plurality of client are coupled to each other in series on the transmission link; transmitting, by the primary host, a first instruction to the transmission link, and transmitting a first synchronization signal corresponding to the first instruction to the secondary host through the synchronization link; and determining, by the secondary host according to the first instruction and the first synchronization signal, that a failure occurs on at least one of the synchronization link and the transmission link.

Abstract: A method of transmitting information from one to many terminals via wireless local area network (WLAN) is implemented in a WLAN including a first electronic device, and a plurality of second electronic devices. The method includes steps of: the first electronic device searching for the plurality of second electronic devices; the first electronic device designating one of the plurality of second electronic devices to be a primary receiving end; the first electronic device requesting the rest of the plurality of second electronic devices to change their channels to be the same as the channel of the primary receiving end; and the first electronic device transmitting information to the primary receiving end, and the rest of the second electronic devices intercepting the information and outputting the same. A system of transmitting information from one to many terminals via WLAN is also disclosed.

Abstract: A one-to-many transmission method and system to transmit real-time video and audio data on wireless local area network, which includes a first station, a second station, and at least one third station. The first station provides at least one video and audio program and a set-packet, and periodically transmits them to the second station. The second station transmits a command-packet to the first station to determine the content of video and audio program transmitted by the first station, and receives the set-packet to confirm whether the set-packet is correct or not. The third station intercepts and receives the set-packet, and according to the configuration of the set-packet changes its network configuration to receive the video and audio program transmitted by the first station, and selectively play the content.

Abstract: A method for improving transmission efficiency of wireless local area network (WLAN) comprises a WLAN neighbors establishing procedure and a high efficiency transmission mode establishing procedure. The WLAN neighbors establishing procedure establishes neighbors between stations of the WLAN. The high efficiency transmission mode establishing procedure causes the stations to disassociate with the access point in a power save mode and switch from an infrastructure mode to an ad-hoc mode for transmitting data. The present invention also discloses a corresponding system of improving transmission efficiency of WLAN.

Abstract: An optical recognition method and system utilizes a scanner to digitize a complex document comprising regions of text and graphics. A recognition engine, illustratively in the form of a general purpose computer, separates regions of text and graphics and identifies lines of text. Character boundaries are determined in each line of text by forming a shadow of the line of text on the horizontal axis. Each byte from the shadow is utilized to access a table stored in a memory associated with the recognition engine. The value contained in the table provides information as to where boundaries are located in the portion of the line of text corresponding to the byte from the shadow.

Abstract: An optical recognition method and system utilizes a scanner to digitize a complex document comprising regions of text and graphics. A recognition engine, illustratively in the form of a general purpose computer, separates regions of text and graphics and identifies lines of text. Character boundaries are determined in each line of text by forming a shadow of the line of text on the horizontal axis. Each byte from the shadow is utilized to access a table stored in a memory associated with the recognition engine. The value contained in the table provides information as to where boundaries are located in the portion of the line of text corresponding to the byte from the shadow.