Ask demodulation device and wireless device using the same

Details Ask demodulation device and wireless device using the same Ask demodulation device and wireless device using the same

2004-10-28

2008-11-11

Deppe, Betsy L (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S320000, C375S361000

Reexamination Certificate

active

07450666

ABSTRACT:
A delay section delays a detected signal by less than one bit time in the NRZ data. A subtraction section performs subtraction between a delayed signal and the detected signal, and outputs a resultant signal. A clock extraction section extracts, from crossing points of a subtracted signal, crossing points whose time interval is more than or equal to (Tb−α) and less than or equal to (Tb+β) (wherein 0<α≦Tb/8, 0<β≦Tb: Tb is one bit time in the NRZ data), and outputs a synchronous signal synchronized with the extracted crossing point. A clock recovery section synchronizes a clock signal with the phase of the synchronous signal, and outputs a data clock signal. A determination section determines the polarity of the subtracted signal outputted from the subtraction section in accordance with the data clock signal, and outputs the determination result as the NRZ data.

REFERENCES:
patent: 4292626 (1981-09-01), Smithlin
patent: 4350973 (1982-09-01), Petryk, Jr.
patent: 4363002 (1982-12-01), Fuller
patent: 5164966 (1992-11-01), Hershberger
patent: 5946355 (1999-08-01), Baker
patent: 0 829 978 (1998-03-01), None
patent: 359075741 (1984-04-01), None
patent: 404054751 (1992-02-01), None
patent: 2000-078211 (2000-03-01), None
patent: 2001-211214 (2001-08-01), None
patent: 2004-158960 (2004-06-01), None

Affiliated with

Also associated with

Rating

Ask demodulation device and wireless device using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ask demodulation device and wireless device using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ask demodulation device and wireless device using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4035596