Radio wave receiver and wave clock

Details Radio wave receiver and wave clock Radio wave receiver and wave clock

2009-01-14

2011-12-13

Odom, Curtis (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S316000, C375S342000, C375S350000, C368S046000, C368S047000

Reexamination Certificate

active

08077808

ABSTRACT:
Disclosed is a radio wave receiver including: a receiving unit to receive a radio wave including a time code in which a plurality of types of data pulse different in pulse width from one another are arranged with a predetermined period of time; a detection circuit to detect the time code in the radio wave received by the receiving unit to obtain a detected signal; a low-pass filter to pass low-frequency components in the detected signal detected by the detection circuit, a cutoff frequency of the low-pass filter being twice a transmit frequency of the data pulse or less; and a data distinction unit to distinguish the types of data pulse based on an output of the low-pass filter for at least one specific point of time during a transmit period of data pulse.

REFERENCES:
patent: 2005/0195690 (2005-09-01), Kondo
patent: 2007/0115759 (2007-05-01), Sano
patent: 2007-139705 (2007-06-01), None

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