Abstract: A network device is connected to user device and includes a processor and a memory storing executable code executed by the processor. The network device is configured to receive first keyword data and speech data followed by the first keyword data; determine whether the first keyword data corresponds to a first keyword; in response to determining that the first keyword data corresponds to the first keyword, recognize word information from the speech data to generate at least one word recognition result; send the at least one word recognition result through a first communication path to a first network; and in response to determining that the first keyword data corresponds to a second keyword, stop recognizing the word information from the speech data followed by the first keyword data, and send the speech data through a second communication path to the first user device.

Abstract: A network device is connected to user device and includes a processor and a memory storing executable code executed by the processor. The network device is configured to receive first keyword data and speech data followed by the first keyword data; determine whether the first keyword data corresponds to a first keyword; in response to determining that the first keyword data corresponds to the first keyword, recognize word information from the speech data to generate at least one word recognition result; send the at least one word recognition result through a first communication path to a first network; and in response to determining that the first keyword data corresponds to a second keyword, stop recognizing the word information from the speech data followed by the first keyword data, and send the speech data through a second communication path to the first user device.

Abstract: A connection switching device for a telephone device supporting a PSTN function and a VoIP function and taking the PSTN function as a default voice communication function is disclosed. The connection switching device includes a dual tone multi-frequency (DTMF) receiver for determining whether a phone number inputted to the telephone device includes a specified trigger code, and a control unit coupled to the DTMF receiver for switching the default voice communication function from the PSTN function to the VoIP function when a decision result of the DTMF receiver indicates that the phone number includes the specified trigger code.

Abstract: A clock signal generator for converting a high speed clock signal to a low speed clock signal, the generator including a first counter receiving the high speed clock signal and counting the cycles thereof, the first counter being configured to count to a first preselected value and then generate an output signal indicating when the first preselected value is reached; a second counter receiving the high speed clock signal and counting the cycles thereof, the second counter being configured to count to a second preselected value and then generate an output signal indicating when the second preselected value is reached, wherein the first and second preselected values are different; and an m-state controller receiving the output signals from the first and second counters and generating the low-speed clock signal therefrom, the m-state generator periodically outputting a reset signal to reset the first and second counters to restart counts in each of those counters.