| 20110059426 | Book - A book for displaying images and playing associated audio content. The book comprises a plurality of leaves defining pages of the book. A plurality of pairs of transmitters and receivers are arranged on the leaves, so that a plurality of the leaves each has a transmitter and a plurality of the leaves each has a receiver. Capacitance coupling between a transmitter and its paired receiver depends upon whether a page of the book is open. The book has a controller configured to provide pulsed signals to the transmitters and receive signals from the receivers. In addition the book has memory for audio content and an audio playback device. The controller is configured to identify any open page of the book by comparing signals received by the receivers from the transmitters to a threshold value. If only one page is open, the controller identifies associated audio content relevant to the open page from audio stored in the memory and identified audio is played on the audio playback device. | 03-10-2011 |
