Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2005-11-01
2005-11-01
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S298000
Reexamination Certificate
active
06960952
ABSTRACT:
The pre-driver of an output driver is calibrated so as to generate output signals having a specified duty cycle. During calibration, a closed loop is utilized to decrease the differences between the common mode voltage of the output signal and a reference voltage. Calibration data is be stored in registers so that the output driver can be readily configured for one of a plurality of signaling types, each having a respective duty cycle. Additionally, a process, voltage and temperature (PVT) detector can be utilized so that calibration of the pre-driver tracks with process, voltage and temperature variations of the integrated circuit in which the output driver resides.
REFERENCES:
patent: 5477180 (1995-12-01), Chen
patent: 5491440 (1996-02-01), Uehara et al.
patent: 5614855 (1997-03-01), Lee et al.
patent: 5757218 (1998-05-01), Blum
patent: 5963071 (1999-10-01), Dowlatabadi
patent: 6163178 (2000-12-01), Stark et al.
patent: 6222354 (2001-04-01), Song
patent: 6320438 (2001-11-01), Arcus
patent: 6342800 (2002-01-01), Stark et al.
patent: 6424178 (2002-07-01), Harrison
patent: 6426660 (2002-07-01), Ho et al.
patent: 6518809 (2003-02-01), Kotra
patent: 6573779 (2003-06-01), Sidiropoulos et al.
patent: 6788120 (2004-09-01), Nguyen
patent: 2002/0070752 (2002-06-01), Harrison
patent: PCT/US2004/021367 (2004-12-01), None
patent: WO 2005/027346 (2005-03-01), None
Chou Chuen-Huei
Lau Benedict
Nguyen Huy
Callahan Timothy P.
Morgan & Lewis & Bockius, LLP
Nguyen Hai L.
Rambus Inc.
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