US Patent No: 6,988,044

Number of patents in Portfolio can not be more than 2000

Bus line current calibration

ALSO PUBLISHED AS: 20040034485

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Importance

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Abstract

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Disclosed herein is a method and system for calibrating line drive currents in systems that generate data signals by varying line drive currents and that interpret the data signals by comparing them to one or more reference voltages. The calibration includes varying the line drive current at a transmitting component. At different line drive currents, a receiver reference voltage is varied while the transmitting component transmits data to a receiving component. At each line drive current, the system records the highest and lowest receiver reference voltages at which data errors do not occur. The system then examines the recorded high and low receiver reference voltages to determine a desirable line drive current.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
RAMBUS INC.LOS ALTOS, CA1322

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batra, Pradeep Santa Clara, CA 20 207
Rutkowski, Rick A Sunnyvale, CA 7 25

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NATIONAL SEMICONDUCTOR CORPORATION (3)
6,160,851 Line driver calibration circuit 21 1998
5,973,516 Transient signal detector with temporal hysteresis 6 1998
6,313,776 Calibrated line driver with digital-to-analog converter 13 1999
 
RAMBUS INC. (2)
6,094,075 Current control technique 52 1998
6,294,934 Current control technique 20 2000
 
ROUND ROCK RESEARCH, LLC (2)
6,333,639 Method and apparatus for independent output driver calibration 22 2000
6,330,194 High speed I/O calibration using an input path and simplified logic 38 2000
 
AVAYA INC. (1)
6,301,358 Dual-slope current battery-feed circuit 12 1998
 
SAMSUNG ELECTRONICS CO., LTD. (1)
6,313,670 Integrated driver circuits having current control capability 15 1999

Patent Citation Ranking

  • Citation Ranking not provided for expired patents

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
8,271,231 Computer device configuration system and method 0 2005

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