Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2008-02-18
2009-08-25
Le, Don P (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S026000, C326S087000
Reexamination Certificate
active
07579874
ABSTRACT:
A low voltage differential signaling (LVDS) transmitter receives a data signal, a data invert signal and a plurality of logic signals. The LVDS transmitter includes a first-stage differential signaling transmitting circuit and a second-stage differential signaling transmitting circuit. The first-stage differential signaling transmitting circuit receives the data signal and the data invert signal and has a first output terminal and a second output terminal. The second-stage differential signaling transmitting circuit is controlled by the logic signals, and has a third output terminal and a fourth output terminal respectively connected to the first output terminal and the second output terminal, so as to generate a needed pre-emphasis signal. When no pre-emphasis signal needs to be generated, the second-stage differential signaling transmitting circuit is controlled to be in disabled state.
REFERENCES:
patent: 6281715 (2001-08-01), DeClue et al.
patent: 6288581 (2001-09-01), Wong
patent: 6437599 (2002-08-01), Groen
patent: 6590432 (2003-07-01), Wu et al.
patent: 6977534 (2005-12-01), Radelinow
Chen Chien-Chung
Lee Po-Ju
Tu Chien-Cheng
Jianq Chyun IP Office
Le Don P
Novatek Microelectronics Corp.
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