Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2007-01-16
2010-10-19
Payne, David C (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S229000, C375S230000, C375S232000
Reexamination Certificate
active
07817714
ABSTRACT:
Provided is an integrating receiver having an adaptive decision feedback equalizer function and a system having the same. The integrating receiver can simultaneously remove an inter-symbol interference (ISI) and high frequency noises in a high speed DRAM data transmission system. The integrating receiver reduces a probability of wrong decision of data in a state in which the ISI that exists in a channel is removed so as to increase a signal-to-noise ratio (SNR) of a receiver, so that a maximum operation speed increases even in an environment with heavy noises. There is also provided a method of obtaining an equalizer coefficient suitable for the integrating receiver and a method of obtaining a reference voltage by using an integrator in a single ended transmission method. In addition, in order to increase a decision feedback equalizer speed, a look-ahead method is used. In this method, flip flops with a high speed including multiplexers are used. Accordingly, the present invention can be applied to not only a DRAM interface system but also a serial communication between chips.
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Bae Seung Jun
Park Hong June
File Erin M
Kile Park Goekjian Reed & McManus PLLC
Park Jae Y.
Payne David C
Postech Foundation and Postech Academy Industry Foundation
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