Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2005-01-11
2005-01-11
Nguyen, Minh (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S117000, C377S047000
Reexamination Certificate
active
06842054
ABSTRACT:
A circuit generates an output signal whose frequency is lower than the frequency of an input signal. In an example embodiment, there is a chain of frequency dividing cells. Each of the frequency dividing cells has a pre-defined division ratio and a clock input for receiving an input clock, a divided clock output for providing an output clock to a subsequent frequency dividing cell, a mode control input for receiving a mode control input signal from the subsequent frequency dividing cell, and a mode control output for providing a mode control output signal to a preceding frequency dividing cell. Further included are a latch for altering the division ratio of each of the frequency dividing cells and D-Flip-Flop circuitry having two latches. A first signal clocks the first latch and a second signal clocks the second latch, whereby the frequency of the first signal is lower than the frequency of the second signal.
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Koninklijke Philips Electronics , N.V.
Nguyen Minh
Zawilski Peter
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