Rambus Inc.

Sandisk Corporation

Lattice Semiconductor Corporation

Cryptography Research, Inc.

Qualcomm Incorporated

Silicon Image Gmbh

Carl William Werner

Jared L Zerbe

Frederick Abbott Ware

Mark A Horowitz

Pak Shing Chau

Stefanos Sidiropoulos

Sau Ching Wong

Hae-Chang Lee

Hock C So

Cheng-Yuan Michael Wang

Leon Sea Jiunn Wong

Andreas M Haeberli

Bruno Werner Garlepp

John Wood Poulton

Kevin S Donnelly

Masum Hossain

Billy Wayne Garrett, Jr

Scott C Best

John Eric Linstadt

Farshid Aryanfar

William Franklin Stonecypher

Richelle L Smith

Ely K Tsern

Brent Steven Haukness

Kun-Yung Chang

Aliazam Abbasfar

Anthony G Bessios

Andrew P Ho

Masoud Koochakzadeh

Amir Amirkhany

Fred F Chen

Jade M Kizer

John M Wilson

Jun Y Kim

Ting Wu

Lei Luo

Roxanne T Vu

Aykut Bultan

Kambiz Kaviani

Haw-Jyh Liaw

Mark D Kellam

John Cronan Eble, Iii

Wayne D Dettloff

Grace Tsang

Wendemagegnehu Beyene

Timothy Chang

Yu Ju Chen

Yu Chen

Billy W Garrett

Jared Levan Zerbe

H J Liaw

Park Chau

A single-ended data transmission system transmits a signal having a signal voltage that is referenced to a power supply voltage and that swings above and below the power supply voltage. The power supply voltage is coupled to a power supply rail that also serves as a signal return path. The signal voltage is derived from two signal supply voltages generated by a pair of charge pumps that draw substantially same amount of current from a power supply.

Configurable, power supply voltage referenced single-ended signaling with ESD protection

A photonic communication system in which a host communicates bidirectionally with a target via a single optical fiber using light of the same wavelength and from the same light source. Signals flowing in opposite directions are discriminated based on polarity. Using the same fiber and light source in both directions reduces cost, complexity, and power consumption.

Systems and methods for bidirectional polarization signaling

In a chip-to-chip signaling system includes at least one signaling link coupled between first and second ICs, the first IC has an interface coupled to the signaling link and timed by a first interface timing signal. The second IC has an interface coupled to the signaling link and timed by a second interface timing signal that is mesochronous with respect to the first interface timing signal. The second IC further has phase adjustment circuitry that adjusts a phase of the second interface timing signal using a digital counter implemented with Josephson-junction circuit elements.

Low power signaling interface

Disclosed is receiver for a noise limited system. A front-end circuit amplifies and band-limits an incoming signal. The amplification increases the signal swing but introduces both thermal and flicker noise. A low-pass band limitation reduces the thermal noise component present at frequencies above what is necessary for correctly receiving the transmitted symbols. This band limited signal is provided to the integrator circuit. The output of the integrator is equalized to reduce the effects of inter-symbol interference and then sampled. The samples are used to apply low frequency equalization (i.e., in response to long and/or unbalanced strings of symbols) to mitigate the effects of DC wander caused by mismatches between the number of symbols of each kind being received.

Noise reducing receiver

An signal switching integrated-circuit die includes an array of switch cells, control signal contacts, data input contacts and data output contacts. Switch control signals are received from an external control-signal source via respective control signal contacts, inbound data signals are received from one or more external data-signal sources via respective data input contacts and outbound data signals are conveyed to one or more external data-signal destinations via respective data output contacts. The array of switch cells receives the control signals directly from the control signal contacts and response to the control signals by switchably interconnecting the data input contacts with selected ones of the data output contacts.

Overdriven switch

A communication system comprises a transmitter and a receiver that communicate differential phase modulated data over a wireline channel pair. The transmitter encodes data symbols by generating first and second data signals with differentially phase shifted signal transitions with respect to one another. The receiver receives the first data signal and the second data signal and samples the first data signal based on a signal transition timing of the second data signal to generate a first output data symbol. The receiver furthermore samples the second data signal based on signal transition timing of the first data signal to generate a second output data symbol.

Phase modulated data link for low-swing wireline applications

Disclosed is a signaling circuit. A switch circuit generates an internal reference supply voltage and an internal lower supply voltage, from first and second power supply voltages. A transmit circuit drives a high bit from the first power supply voltage, and drives a low bit from the internal lower supply voltage. The second terminal of the data output is connected to the internal reference supply voltage.

Pseudo-differential signaling for modified single-ended interface

Synchronous signaling interface with over-clocked timing reference

Low power cryogenic switch

An integrated-circuit output driver generates, in response to an input signal constrained to a first voltage range, a control signal at one of two voltage levels according to a data bit conveyed in the input signal, the two voltages levels defining upper and lower levels of a second voltage range substantially larger than the first voltage range. The output driver generates an output-drive signal constrained to a third voltage range according to the one of the two voltage levels of the control signal, the third voltage range being substantially smaller than the second voltage range.

Transmitter/receiver with small-swing level-shifted output

Growing community of inventors

Los Gatos, CA, United States of America

Carl William Werner