Abstract: A videoconferencing system includes a touch screen display device and a videoconferencing unit. The display device displays video data for the videoconference and generates touch data based on user selections relative to the touch screen. The videoconferencing unit is operatively coupled to the touch screen device by a video connection and a data interface connection, for example. The unit establishes and conducts a videoconference with one or more endpoints via a network. The unit sends video data to the display device and receives touch data from the device. The received touch data is used to control operation of the videoconferencing system. The received touch data can be used to initiate a videoconference call, change an operating parameter, change orientation of a camera, initiate a picture-in-picture display, access a menu, access memory, change a source of video data, initiate a whiteboard display, and access a screen of a connected device.

Abstract: A videoconferencing system includes a touch screen display device and a videoconferencing unit. The display device displays video data for the videoconference and generates touch data based on user selections relative to the touch screen. The videoconferencing unit is operatively coupled to the touch screen device by a video connection and a data interface connection, for example. The unit establishes and conducts a videoconference with one or more endpoints via a network. The unit sends video data to the display device and receives touch data from the device. The received touch data is used to control operation of the videoconferencing system. The received touch data can be used to initiate a videoconference call, change an operating parameter, change orientation of a camera, initiate a picture-in-picture display, access a menu, access memory, change a source of video data, initiate a whiteboard display, and access a screen of a connected device.

Abstract: Opto-isolators are disclosed which provide enhanced coupling between the light-emitting element and detector, and a method of manufacture is taught which permits efficient mass production of such devices. Recesses are etched in a silicon body and areas of the proper conductivity type are formed in the side walls to produce diodes, transistors or darlington pairs for light detection. Appropriate insulation and leads are then fabricated in the recesses to make contact to the detectors. In one embodiment, bonding pads are also formed at the bottom of the recesses along with associated conductors. Light emitting elements are then bonded to the pads on one major surface of the elements and wire bonded on the other major surfaces. The recesses are filled with an encapsulating material and the silicon body is etched apart to produce discrete devices.