Method for speech control of an electrical device

#The present invention relates to a method for a speech control of an electrical device, wherein informations to be inputted are inputted by spelling.

#Electrical devices in form of vehicle navigation devices are known, in which information is to be inputted, such as for example a location name of a navigation target can be inputted by spelling. A correction within a running speech inputting is not provided. If a correction of inputting information must be performed, this can be done only after the end of the inputting procedure by repeating the speech input for the desired information. This method can be considered to be quite complicated, and can significantly distract the driver of a motor vehicle from traffic actions.

#Accordingly, it is an object of the present invention to provide a method for speech controlling of an electrical device, which eliminates the disadvantages of the prior art.

#FIG. 1 is a view showing a block diagram of a part of an electrical device which is important for the invention, for performing an inventive method; and

#FIG. 2 is a view showing a flow chart of a preferable embodiment of the inventive method of speech inputting.

#FIG. 1 shows a block diagram of an electrical device for performing a method in accordance with the present invention.

#The electrical device which is to be controlled by speech inputting is provided with a microphone 12 for receiving spoken informations. The output signals of the microphone 12 are supplied to a control 10. The control 10 is formed preferably as a program-controlled microprocessor. By controlling of corresponding functions for realization of the operational course and operations of the device, operational programs can be processed in the microprocessor as components of the control.

#A storage 14 is connected with the control 10. In the storage a speech data and the elements of a speech pattern associated with the speech data are stored. The speech data include in this case 26 characters of the German alphabet including three umlauts, such as Ä, Ö, and Ü, further the numerals 0 to 9, and the command words “BACK” and “INPUT”. At least one speech pattern is associated in the storage 14 with each element of the speech data, namely the characters, the umlauts, the numerals and the command words. In the case of several conventional pronunciations of one element of the speech data, such as for example the number 2 which can be pronounced in German as “ZWEI” and “ZWO”, all used speech patterns are preferably associated with a corresponding elements of the speech data in the storage 14.