Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2006-11-28
2006-11-28
Le, Don (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S083000
Reexamination Certificate
active
07142016
ABSTRACT:
In a semiconductor device, an input buffer for buffering an input signal to provide an internal signal includes a reference voltage adjusting unit configured to receive a reference voltage and to output a first reference signal having a potential level higher than that of the reference voltage and a second reference signal having a potential level lower than that of the reference voltage, a multiplexing unit configured to selectively output one of the first and second reference signals as a newly selected reference signal in response to the internal signal, a differential amplification unit configured to amplify the input signal by comparing the input signal with the newly selected reference signal outputted to generate an amplified input signal, and an internal buffer configured to output the internal signal by buffering the amplified input signal.
REFERENCES:
patent: 6529422 (2003-03-01), Mazumder et al.
patent: 6677804 (2004-01-01), Pekny
patent: 6711073 (2004-03-01), Martin
patent: 00186344 (1998-12-01), None
patent: 00197998 (1999-02-01), None
Notice of Preliminary Rejection Issued by Korean Intellectual Property Office dated Sep. 23, 2004.
Hynix / Semiconductor Inc.
Le Don
Marshall & Gerstein & Borun LLP
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