Tuesday, May 23, 2006

Rambus - three more patents

Rambus Inc. Chief Scientist, Dr. Mark Horowitz and and Rambus Fellow, Craig Hampel combine their talents with others in two newly issued patents as Rambus earns three patents this week:

United States Patent 7,051,151

Perego, et al. May 23, 2006

Integrated circuit buffer device

Abstract
An integrated circuit buffer device including a first port and a second port. The first port to receive data from a first integrated circuit memory device, and the second port to receive data from a second integrated circuit memory device. The integrated circuit buffer device further includes a multiplexer to output a data stream that includes the data received from the first integrated circuit memory device and the data received from the second integrated circuit memory device. In addition, the integrated circuit buffer device includes an interface including transmit circuitry to transmit the data stream to an integrated circuit controller device.

Inventors: Perego; Richard E. (San Jose, CA); Sidiropoulos; Stefanos (Palo Alto, CA); Tsern; Ely (Los Altos, CA)

Assignee: Rambus Inc. (Los Altos, CA)

Appl. No.: 272024

Filed: October 15, 2002

***

United States Patent 7,051,129

Horowitz, et al. May 23, 2006

Memory device having programmable drive strength setting

Abstract
Bus communications are optimized by adjusting signal characteristics in accordance with one or more topography dependent parameters. In a bus transmitter, a transmit signal characteristic is adjusted in accordance with a topography dependent parameter. A port in the bus transmitter receives the topography dependent parameter for later use by the parameter adjustment circuitry. The parameter adjustment circuitry adjusts a parameter control signal in accordance with the topography dependent parameter, which is coupled to the output driver. Prior to driving an output signal onto a bus, the output driver adjusts the transmit signal characteristic in accordance with the parameter control signal. Similarly, in a bus receiver, a receive signal characteristic is adjusted in response to a topography dependent parameter.

Inventors: Horowitz; Mark A. (Menlo Park, CA); Barth; Richard M. (Palo Alto, CA); Hampel; Craig E. (San Jose, CA); Moncayo; Alfredo (Redwood City, CA); Donnelly; Kevin S. (Los Altos, CA); Zerbe; Jared L. (Woodside, CA)

Assignee: Rambus Inc. (Los Altos, CA)

Appl. No.: 881433

Filed: June 29, 2004

***

United States Patent 7,051,130

Horowitz, et al. May 23, 2006

Integrated circuit device that stores a value representative of a drive strength setting

Abstract
In an integrated circuit memory device, a transmitter circuit includes an output driver that outputs data synchronously with respect to an external clock. A register stores a value representative of a drive strength setting of the output driver. The value is determined based on information stored in a supplemental memory device.

Inventors: Horowitz; Mark A. (Menlo Park, CA); Barth; Richard M. (Palo Alto, CA); Hampel; Craig E. (San Jose, CA); Moncayo; Alfredo (Redwood City, CA); Donnelly; Kevin S. (Los Altos, CA); Zerbe; Jared L. (Woodside, CA)

Assignee: Rambus Inc. (Los Altos, CA)

Appl. No.: 882879


Filed: June 30, 2004

Hat tip to FinzToRite for the links.

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