Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2008-05-01
2010-06-01
Cox, Cassandra (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S158000
Reexamination Certificate
active
07728640
ABSTRACT:
A DLL circuit according to an embodiment of the present invention includes: a delay line configured to output a plurality of delayed signals of a reference signal, the delay line including, a plurality of first delay units connected in series with each other, each of the first delay units being configured to output a delayed signal of the reference signal, a blocking circuit inserted between the first delay units, the blocking circuit being capable of switching between passing and blocking an input delayed signal of the reference signal, and the delay time of the blocking circuit being integer times as large as each of the delay time of the first delay units, and one or more second delay units connected in parallel with the blocking circuit, the same signal as the delayed signal that is input in the blocking circuit being input in the second delay units, each of the second delay units being configured to output a delayed signal of the reference signal, and the delay time of each of the second delay units being equal to the delay time of each of the first delay units; and a blocking control circuit configured to control the blocking circuit whether to pass or block the delayed signal that is input in the blocking circuit.
REFERENCES:
patent: 6646480 (2003-11-01), Weng et al.
patent: 6784714 (2004-08-01), Nakamura
patent: 6998897 (2006-02-01), Pilo et al.
patent: 7049868 (2006-05-01), Lutkemeyer
patent: 7310010 (2007-12-01), Minzoni et al.
patent: 2003/0006808 (2003-01-01), Weng et al.
patent: 2005/0184776 (2005-08-01), Pilo et al.
patent: 11-272355 (1999-10-01), None
Cox Cassandra
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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