US5048059A
(en )
1991-09-10
Log-polar signal processing
US4562414A
(en )
1985-12-31
Digital frequency modulation system and method
SE8503057D0
(sv )
1985-06-19
Datamottagare for upptecknad data
US4071695A
(en )
1978-01-31
Speech signal amplitude equalizer
DK147369B
(da )
1984-07-02
Fremgangsmaade og anordning til frembringelse af hoejfrekvensimpulser med forudbestemt impulsform
US3697689A
(en )
1972-10-10
Fine timing recovery system
US3694752A
(en )
1972-09-26
High speed transmission receiver utilizing fine receiver timing and carrier phase recovery
US3646448A
(en )
1972-02-29
Quadrature injection control circuit
JPS605086B2
(ja )
1985-02-08
相関符号化デ−タ伝送における適応型自動等化器
SU167539A1
(enrdf_load_html_response )
US4754260A
(en )
1988-06-28
Method of and apparatus for reducing quantizing noise in analog to digital converters
US3111625A
(en )
1963-11-19
Method for phase or frequency demodulation
US3727135A
(en )
1973-04-10
Adaptive code modulation improvement in digital code modulators
DK142599B
(da )
1980-11-24
Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler.
US3990010A
(en )
1976-11-02
Data transmission systems
US5070516A
(en )
1991-12-03
Method and apparatus for reducing noise on a signal encodable on a plurality of predetermined levels
US2557950A
(en )
1951-06-26
Pulse spacing modulated communication system
US2962553A
(en )
1960-11-29
Coding and decoding system
FR2494930A1
(fr )
1982-05-28
Circuit de detection d'un niveau d'un signal
US2534535A
(en )
1950-12-19
Secrecy system
US3979692A
(en )
1976-09-07
Apparatus for phase keying in frequency and phase voltage controlled oscillator with an incoming signal having a T period, and phase coded of the biphase PCM type or PSK type
US3196350A
(en )
1965-07-20
Narrow bandwidth high q communication system
US4313088A
(en )
1982-01-26
Arrangement for generating a clock signal
US3760276A
(en )
1973-09-18
Digital transmission system
US6034802A
(en )
2000-03-07
Wireless communications systems with self threshold setting