Digital Equipment Corporation

3Com Corporation

Robert F Turnbull

Robert Reissfelder

Christopher J Duguay

Michael K Brown

A system and method for implementing an SMBus/IC interface in a computer connectable to a network. The system includes a plurality of devices communicably coupled to an SMBus. The system operates at a first clock rate when the system is awake, and at a second clock rate less than the first clock rate when the system is sleeping. At least when the system is sleeping, a first device stores data transferred via the SMBus in a register, and a second device drives the clock line of the SMBus to a low logic level while the data is stored in the register of the first device. Upon completion of the data transfer operation, the first device clears the data from the register, and the second device releases the clock line to allow it to be pulled-up by pull-up circuitry connected to the SMBus.

System and method for implementing an SMBus/I2C interface on a network interface card

Dynamic focus circuits for generating a dynamic focus signal for focusing an electron beam on a CRT, the signal being proportional to a function of the vertical deflection Y and horizontal deflection X of the beam according to X.sup.2 +Y.sup.2 +X.sup.2 f(Y) or X.sup.2 +Y.sup.2 +Y.sup.2 f(X), where f(Y) or f(X) is a positive symmetric function. The resultant dynamic focus signal has increased magnitude as the beam moves away from the center of the screen, thus providing proper focusing at the corners of the screen as well as at the center and sides of the screen.

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Watertown, MA, United States of America

Robert F Turnbull