Clock's out-of-synchronism state detection circuit and...

Details Clock's out-of-synchronism state detection circuit and... Clock's out-of-synchronism state detection circuit and...

2005-05-10

2005-05-10

Nuton, My-Trang (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By frequency

C327S048000

Reexamination Certificate

active

06891402

ABSTRACT:
A detection circuit which can reliably detect an out-of-synchronism state of a clock signal with respect to data even if jitter is present in a data signal. A delayed clock signal obtained by delaying a clock signal by 90° through a delay circuit is input to a data input (D) of a flip flop, and the clock signal is read in at the point of change of the data. A logic product of the inverted output of the flip flop and the data signal is obtained by an AND circuit. Then, a logic product output is counted by a counter circuit, and an out-of-synchronism state of the clock with respect to the data is detected based on the output of the counter circuit.

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