Clock generator circuit, signal multiplexing circuit,...

Details Clock generator circuit, signal multiplexing circuit,... Clock generator circuit, signal multiplexing circuit,...

2005-04-29

2009-11-10

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S293000, C327S255000, C327S256000

Reexamination Certificate

active

07616042

ABSTRACT:
For the purpose of achieving multiplexing of data signals for the channels of more than four in number in the generating of a frequency-divided clock signal using toggle flip-flop circuits (TFF), while avoiding any possible phase shift relationship between generated frequency-divided clock signals attributed to the indefinite initial state posing the inherent problem of the TFF, there is provided a clock generator circuit comprising a plurality of toggle flip-flop circuits connected in series, capable of outputting a pair of frequency-divided clock signals with different phases; and a delay circuit connected to the toggle flip-flop circuit, capable of outputting a clock signal with a phase shifted with respect to the phases of the pair of frequency-divided clock signal phases by delaying either one or both of the pair of frequency-divided clock signals being outputted from the toggle flip-flop circuits.

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patent: 5-37315 (1993-02-01), None
patent: 2004-147075 (2004-05-01), None
L. Yang, et al.: “A Non-Feedback Multiphase Clock Generator”; ISCAS 2002 IEEE International; Symposium, vol. 4, pp. IV-389-IV-392.

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