US Patent No: 6,988,044

Number of patents in Portfolio can not be more than 2000

Bus line current calibration

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ALSO PUBLISHED AS: 20040034485
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

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, CA1229

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batra, Pradeep Santa Clara, CA 13 181
Rutkowski, Rick A Sunnyvale, CA 4 19

Cited Art

Patent Info (Count) # Cites Year
 
NATIONAL SEMICONDUCTOR CORPORATION (3)
6,160,851 Line driver calibration circuit 20 1998
5,973,516 Transient signal detector with temporal hysteresis 6 1998
6,313,776 Calibrated line driver with digital-to-analog converter 12 1999
 
RAMBUS INC. (2)
6,094,075 Current control technique 47 1998
6,294,934 Current control technique 17 2000
 
ROUND ROCK RESEARCH, LLC (2)
6,333,639 Method and apparatus for independent output driver calibration 21 2000
6,330,194 High speed I/O calibration using an input path and simplified logic 35 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 13 1999

Patent Citation Ranking

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Forward Cites

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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