Abstract: An output driver (10) for a bus interface and associated method of operation. The output driver (10) comprises a first driver circuit (12), a second driver circuit (14), and a controller (16). The first driver circuit (12) provides data at a first current level to an output (18) while the second driver circuit (14) provides data to the output (18) at a second current level when activated. The controller (16), by selectively operating the first driver circuit (12) and the second driver circuit (14) causes the output driver (10) to selectively operate in differing modes of operation over time. In this fashion, the output driver (10) operates in Classical Mode (84), Active Negate Mode (80), Pulsed Negation Mode (82), and Differential Mode (86) based upon the requirements of peripheral devices (106, 108. 110. 112) and peripheral bus (20) requirements.

Abstract: A system for publishing data on shared broadcast channels using spread-spectrum techniques, which may comprise a spread-spectrum encoder capable of receiving data and placing it in a spread-spectrum signal format and a transmitter operating on a shared communication channel or frequency band, such as might be allocated to terrestrial point-to-point or broadcast communications. The shared communication channel may comprise a cellular system, in which data may be transmitted using spread-spectrum techniques using the transmitters and repeaters of the cellular system simultaneously with voice and other transmissions associated with the cellular system. A subscriber station may be capable of receiving using a plurality of different communication channels or frequency bands, such as a first receiver capable of cellular reception and a second receiver capable of satellite reception, at least one of which uses spread-spectrum techniques.

Abstract: A multimedia collaboration system that integrates separate real-time and asynchronous networks--the former for real-time audio and video, and the latter for control signals and textual, graphical and other data--in a manner that is interoperable across different computer and network operating system platforms and which closely approximates the experience of face-to-face collaboration, while liberating the participants from the limitations of time and distance. These capabilities are achieved by exploiting a variety of hardware, software and networking technologies in a manner that preserves the quality and integrity of audio/video/data and other multimedia information, even after wide area transmission, and at a significantly reduced networking cost as compared to what would be required by presently known approaches. The system architecture is readily scalable to the largest enterprise network environments.