Digital demodulator

Details Digital demodulator Digital demodulator

2006-01-10

2006-01-10

Choe, Henry (Department: 2817)

Demodulators

Phase shift keying or quadrature amplitude demodulator

C329S306000, C375S329000

Reissue Patent

active

RE038932

ABSTRACT:
A digital demodulator which demodulates information signals that have been phase-modulated using a method such as PSK (Phase Shift Keying). The adder46adds a compensation value held by the phase compensator45to phase difference data outputted from the comparator43.The subtractor47subtracts phase difference data delayed by the delaying circuit44by one information symbol period from the sum of the phase difference data and the compensation value from the adder46,thus performing delay detection. With this digital demodulator, an input signal can be received and demodulated even if its frequency is not an integral division of the frequency of a master clock signal, and an oscillator can be used even if its frequency is not an integral multiple of the frequency of an input signal to be demodulated.

REFERENCES:
patent: 464814 (1892-10-01), Yukihiro
patent: 5097220 (1992-03-01), Shimakata et al.
patent: 5511097 (1996-04-01), Tsumura
patent: 6038267 (2000-03-01), Oura et al.
patent: 464 814 (1992-01-01), None
patent: 2-230845 (1990-09-01), None
patent: 5-167631 (1993-07-01), None
patent: 5-191465 (1993-07-01), None
patent: 6-14070 (1994-01-01), None
patent: 6-30063 (1994-02-01), None

Affiliated with

Also associated with

Rating

Digital demodulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital demodulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital demodulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3547879