Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Clock or pulse waveform generating
Reexamination Certificate
2007-11-13
2007-11-13
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Clock or pulse waveform generating
C327S294000, C327S263000
Reexamination Certificate
active
11216142
ABSTRACT:
A semiconductor integrated circuit includes a integration circuit which has a first integrating portion and a second integrating portion. The semiconductor integrated circuit also includes a data input portion, data processing portion and data output portion. A clock signal is inverted by an input buffer and applied to a NAND gate together with a mask signal. When the signal from the NAND gate rises, the signal of the second integrating portion falls after a delay time due to the integration circuit. The signal from the NAND gate is applied together with the signal from the second integrating portion to a second NAND gate, and the signal from the second NAND gate is fixed at “L” during the period from the time of the rise of the clock signal for the duration of the delay time of the integration circuit. The signal from the second NAND gate is delayed by a third integrating portion and a delay time of the third integrating portion is added by an AND gate to generate a mask signal. In the meantime, the signal from the second NAND gate is also inverted by an inverter, and is supplied as an internal clock to the data input portion, data processing portion, and data output portion.
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Noguchi Hidekazu
Uehara Hidenori
Nguyen Hai L.
Nixon & Peabody LLP
Oki Electric Industry Co. Ltd.
Studebaker Donald R.
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