Abstract: A method of facilitating electronic presentations using portable storage media. An array of images to be displayed to an audience is converted into a database and stored on the presenter's computer hard drive. A copy of the image database is transferred to a portable storage medium, such as a personal computer (PC) card, which is then inserted into a display device such as a liquid crystal display (LCD) panel equipped to accept a PC card. When the presenter selects which image is to be displayed to the audience, the selection is communicated to the LCD panel which displays the corresponding image in the database copy on the PC card for viewing by the audience. The present invention also includes a system for giving electronic presentations.

Abstract: A power conservation device for a peripheral interface module configured for use in an electronic device includes a sensing means that senses whether the module is in use, and a switching means that connects power from the electronic device to the module when the module is in use, and disconnects power from the electronic device to the module when the module is not in use. The peripheral interface module is designed for use with a peripheral device that is coupled to the module via a peripheral device plug. The peripheral device plug engages a socket provided in the module. The sensing means senses whether the plug engages the socket as an indication of whether the module is actually in use. In response, the switching means disconnects power from the electronic device to the module when the plug does not engage the socket, and connects power from the electronic device to the module when the plug does engage the socket.

Abstract: Circuitry for a facsimile receiver for regenerating a carrier signal from the full-wave rectified signal obtained from a received signal which includes an amplitude modulated suppressed carrier signal and periodic short intervals of unmodulated carrier, each interval being synchronous with a position signal produced at the facsimile receiver each time the phase position of the receiver is reached. The circuitry includes a phase lock loop (PLL) which functions as a sample data PLL. A switching means limits closed loop operation of the circuitry to those times when the short interval unmodulated carrier is received during a time slot provided by the switching means each time the facsimile receiver reaches its phase position. In a preferred embodiment, the loop is also closed (sampled) when other periods of unmodulated carrier is present in the received signal to which the switching means responds.