Virtual keyboard apparatus for e.g. personal digital assistant, has signal processor with output providing data corresponding to determined location of vibration detected by vibration transducer matrix that is in contact with sound surface

摘要

The apparatus has a signal processor (120) connected to an output of a matrix (110) of vibration transducers (112). The transducers detect and transform the vibrations into a pulse of an electrical signal. The processor has an output providing data corresponding to a determined location of a vibration detected by the matrix. The matrix is in contact with a sound surface that transmits the vibration detected by the matrix.