Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2011-02-22
2011-02-22
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S261000, C327S558000
Reexamination Certificate
active
07893746
ABSTRACT:
For differential signal transmission (especially in high speed applications), intra-pair skew between paths carrying complementary portions of a differential signal can significantly affect performance. Conventional de-skew circuits employ simple filters (i.e., low-pass filters) to operate as delay elements to account for skew; however, these filters can distort the differential signal, which can also adverse affect performance. Here, an all-pass, adjustable delay element and de-skew circuit are provided to allow for compensation of skew without degrading the differential signal as conventional circuit do and, thus, having better performance characteristics.
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Fan Yanli
Liu Hao
Morgan Mark W.
Zheng Yuxiang
Brady III Wade J.
Le Dinh T.
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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