1
Brandon Duncan, Joshua Seth Hodas, Jared Joseph Jackson, Walter Irwin Nissen III, Neelakantan Sundaresan: Electronic book with multimode I/O. International Business Machines Corporation, John L Rogitz, September 12, 2006: US07107533 (74 worldwide citation)

An electronic book device runs at least two output mode threads—one graphics, and one audio—such that the device can both graphically display book content, and play the content over a speaker in the device. Annotations can be made audibly or graphically, and user commands can likewise be made audibl ...


2
Brandon Duncan, Joshua Seth Hodas, Jared Joseph Jackson, Walter Irwin Nissen, Neelakantan Sundaresan: Electronic book with multimode I/O. International Business Machines Corporation, John L Rogitz, Rogitz & Associates, January 16, 2003: US20030013073-A1 (1 worldwide citation)

An electronic book device runs at least two output mode threads—one graphics, and one audio—such that the device can both graphically display book content, and play the content over a speaker in the device Annotations can be made audibly or graphically, and user commands can likewise be made audibly ...