Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-03-15
2005-03-15
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S535000, C327S306000
Reexamination Certificate
active
06867637
ABSTRACT:
In a semiconductor integrated circuit device, for realizing high speed, as well as superior product yield rate and usability, while reducing circuit scale and improving on product yield rate and reliability thereof, a main circuit, constructed with CMOS elements, is coupled to a speed monitor circuit for forming a speed signal corresponding to an operating speed thereof and to a substrate bias controller for supplying corresponding substrate bias voltages to the main circuit in response to the speed monitor circuit. A current limiting circuit is also provided in conjunction with the substrate bias controller to prevent an overflow of current due to bias voltage.
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Ishibashi Koichiro
Miyazaki Masayuki
Ono Goichi
Callahan Timothy P.
Luu An T.
Renesas Technology Corp.
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