15. A speech recognition device, comprising: an audio signal receiver configured to receive audio signals from a speech source; a video signal receiver configured to receive video signals from the speech source; a processing unit configured to detect if the audio signals can be processed and if so, to process the audio signals and process the video signals based on the detection that at least a portion of the audio signals cannot be processed; a conversion unit configured to convert at lease one of the audio signals and the video signals to recognizable information; and an implementation unit configured to implement a task based on the recognizable information, wherein the processing unit is configured to determine if the video image of a user is detected and, if the video image of the user is not detected, to indicate to the user that the video image is not detected.
15. A speech recognition device, comprising: an audio signal receiver configured to receive audio signals from a speech source; a video signal receiver configured to receive video signals from the speech source; a processing unit configured to detect if the audio signals can be processed and if so, to process the audio signals and process the video signals based on the detection that at least a portion of the audio signals cannot be processed; a conversion unit configured to convert at lease one of the audio signals and the video signals to recognizable information; and an implementation unit configured to implement a task based on the recognizable information, wherein the processing unit is configured to determine if the video image of a user is detected and, if the video image of the user is not detected, to indicate to the user that the video image is not detected. 26. The speech recognition device of claim 15 , wherein the speech recognition device is part of a laptop computer, a home computer, a PDA, an audio/video recording device, a remote controller and/or a game console.