Telecommunications – Carrier wave repeater or relay system – Frequency or phase modulation
Reexamination Certificate
2006-05-09
2006-05-09
Vuong, Quochien B. (Department: 2685)
Telecommunications
Carrier wave repeater or relay system
Frequency or phase modulation
C455S042000, C455S205000, C332S117000, C375S371000
Reexamination Certificate
active
07043202
ABSTRACT:
A phase-selective type frequency modulator capable of easing the restriction on a phase range of a modulated clock signal. The phase-selective type frequency modulator includes a multiphase clock signal generating circuit101for generating N-phase clock signals; a control circuit104for sequentially activating one of first group of clock selection signals indicating a clock signal to be selected from the N-phase clock signals; an edge appearance time adjustment circuit103for adjusting a rising edge appearance time and/or a trailing edge appearance time of the first group of clock selection signals outputted from the control circuit104to output second group of clock selection signals; and a modulated clock signal generating circuit102for selecting one clock signal from the N-phase clock signals in accordance with an activated state of the second group of clock selection signals outputted from the edge appearance time adjustment circuit103to output a modulated clock signal MCK.
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Okamura Jun-ichi
Ozawa Seiichi
Thine Electronics Inc.
Vuong Quochien B.
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