Patents
Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890)
08/2001
08/22/2001CN1309835A Single chip CMOS transmitter/receiver and VCO-mixer structure
08/01/2001CN1306699A Direct conversion receiver
07/2001
07/24/2001US6265940 Detector and transmitter incorporating the detector
07/19/2001WO2001052452A1 Wireless digital high speed communications
07/17/2001US6262630 Rapidly-responding diode detector with temperature compensation
07/10/2001CA2250448C Detector
07/05/2001WO2001048909A2 Quadrature frequency converter
07/05/2001US20010006539 Vestigial sideband receiver and method for restoring carrier wave
06/2001
06/12/2001US6246867 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
06/05/2001US6243569 Direct conversion circuit for radio frequency signals
06/05/2001CA2221905C Iq combiner technology in modulated backscatter system
05/2001
05/29/2001US6239625 Detection circuit
05/23/2001EP1101285A1 Single chip cmos transmitter/receiver and vco-mixer structure
05/23/2001EP0691057B1 I/q quadraphase modulator circuit
05/22/2001US6236688 Receiving circuit
05/17/2001WO2001035538A2 Low spurious homodyne receiver
05/03/2001WO2001031798A1 Communications terminal having a receiver and method for removing known interferers from a digitized intermediate frequency signal
05/03/2001WO2001031776A2 Device for demodulating an amplitude-modulated signal
05/03/2001CA2356376A1 Device for demodulating an amplitude-modulated signal
05/02/2001CN1065395C High frequency receiving apparatus
04/2001
04/18/2001EP1093219A1 Circuit to demodulate an intermediate frequency video signal
04/18/2001CN1292189A Method and circuit for demodulation
04/18/2001CN1291827A Demodulating method capable of maintaining specular purity
04/17/2001USRE37138 Log-polar signal processing
04/12/2001DE19948745A1 Schaltungsanordnung zur Demodulation eines Zwischenfrequenz-Videosignals A circuit arrangement for demodulating an intermediate-frequency video signal,
04/04/2001EP1089427A1 Method for the comparison of the amplitudes of two electrical signals
04/04/2001EP0928514A4 Receiver capable of demodulating multiple digital modulation formats
04/04/2001CN1289930A Method for comparison of amplitudes of two electric signals
04/03/2001US6212661 Static viterbi detector for channels utilizing a code having time varying constraints
04/03/2001US6211924 Decimation of baseband DTV signal prior to channel equalization in digital television signal receivers
03/2001
03/29/2001WO2001022571A1 Apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal
03/27/2001US6208850 Direct conversion receiver per-selection
03/21/2001EP1085651A1 Demodulator using selection of a harmonic signal at the level of intermediate frequency , and process
03/21/2001CN1288606A Detector circuit
03/15/2001WO2001019047A1 Phase interpolation receiver for angle modulated rf signals
03/13/2001US6201840 Method and apparatus for detecting data in magnetic recording using decision feedback
03/13/2001US6201430 Computational circuit
03/01/2001WO2001015317A1 Automatic gain control loop for frequency conversion of quadrature signals
02/2001
02/28/2001EP1078450A1 Methods and apparatus for timing recovery of vestigial sideband (vsb) modulated signals
02/21/2001EP1076925A1 Rectifier circuit
02/20/2001US6192225 Direct conversion receiver
02/20/2001CA2296861C Television receiver for tuning a signal including a pilot signal
02/20/2001CA2296855C Receiving and demodulating a digital television signal
02/15/2001WO2001011774A1 Am demodulator using carrier phase correction
02/13/2001US6188880 Apparatus and method for reducing low-frequency distortion in frequency converted signals
02/07/2001EP1074093A1 Direct conversion receiver
02/06/2001US6184942 Adaptively receiving digital television signals transmitted in various formats
01/2001
01/24/2001EP1071203A1 Stereo demultiplexer
01/24/2001EP1071202A2 PLL amplitude demodulator
01/16/2001US6175269 Demodulation unit and method of demodulating a quadrature
01/10/2001CN1279544A Broadcast receiver
01/03/2001EP1065853A1 Broadcast receiver for multi-transmission system
12/2000
12/29/2000CA2312531A1 Broadcast receiver
12/28/2000DE10023734A1 Quadrature demodulator, adds user signal to pseudo=noise giving pseudo=noise superimposed signal, mixes this with local signal giving converted signal, multiplies this with pseudo=noise giving correlated signal, then integrates
12/27/2000CN1059992C Carrier independent timing recovery system for vestigial sideband modulated signal
12/14/2000WO2000076062A1 Improved diode detector
12/14/2000WO2000048370A3 Modem with a reduced state maximum likelihood sequence estimator
12/07/2000WO2000045523A3 A homodyne radio receiver
12/06/2000EP1058451A1 Digital AM demodulator, particularly for demodulating TV signals
12/06/2000EP1057253A2 Down/up-conversion apparatus and method
11/2000
11/29/2000CN1275258A Method and apparatus for detecting data in magnetic recording using decision feedback
11/29/2000CN1275012A Quadrature demodulator, quadrature demodulating method and recording medium thereof
11/28/2000CA2009381C Biasing circuitry for a diode detector
11/15/2000CN1273707A Down/up-conversion apparatus and method
11/09/2000DE19920362A1 Digitaler AM-Demodulator A digital AM demodulator
11/08/2000EP1050983A2 Digital AM demodulator
11/08/2000EP1050956A1 Detector circuit
11/08/2000EP1050141A2 A method and a circuit for am demodulation
11/07/2000CA2049544C Logarithmic amplifier/detector delay compensation
11/02/2000EP1049261A2 Direct conversion radio receiver
10/2000
10/26/2000WO2000064042A2 Device for frequency down-converting using undersamling, and method
10/25/2000CN1057885C Phase detector in carrrier recovery network for vestigial sideband single
10/24/2000US6137545 Reception mode control in radio receivers for receiving both VSB and QAM digital television signals
10/17/2000US6133964 Digital demodulator and method therefor
10/04/2000CN1268830A Multiple frequency band data communication equipment and communication method and storage medium therefor
09/2000
09/27/2000EP1039649A2 Method and apparatus for multiband data communication , and storage medium
09/26/2000CA2074124C Transmitter with nonlinearity correction circuits
09/14/2000WO2000054400A1 Rectifier circuit
09/14/2000DE19931295A1 Gleichrichterschaltung Rectifier circuit
09/13/2000CN1266549A Static viterbi detector for channels utilizing code having time varying constraints
09/12/2000US6118825 Digital data transmission device and method, digital data demodulation device and method, and transmission medium
09/06/2000CN1056254C Full-wave rectifying circuit
08/2000
08/31/2000WO2000051254A1 Radio receiver and method for preloading an average dc-offset into a channel filter
08/30/2000CN1056027C Terrestrial and satellite television reception tuner
08/22/2000US6107838 Simultaneous two-way communication system using a single communication port
08/17/2000WO2000048370A2 Modem with a reduced state maximum likelihood sequence estimator
08/16/2000CN1055581C Demodulator circuit and demodulating method
08/15/2000US6104442 Radio receiver for receiving both VSB and QAM digital HDTV signals
08/03/2000WO2000045523A2 A homodyne radio receiver
08/03/2000WO2000030265A3 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
07/2000
07/25/2000US6094235 Digital television broadcast receiver that demodulates an intermediate frequency signal having a frequency higher than a frequency of a received signal
07/19/2000EP1020024A1 Filtering arrangement and slope detector for quadrature amplitude modulated signals
07/18/2000US6091306 Circuit configuration with main and subordinate oscillators
06/2000
06/28/2000EP1012964A1 Single side-band modulation system for use in digitally implemented multicarrier transmission systems
06/14/2000EP1009101A2 Direct conversion receiver
06/02/2000WO1999063673A9 Sequential decoder, and receiver using sequential decoder
05/2000
05/25/2000WO2000030265A2 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
05/18/2000WO2000028708A1 Method for ask demodulation and ask demodulator
05/17/2000EP1001543A1 Sequential decoder, and receiver using sequential decoder
05/02/2000CA2178198C Circuit for the acquisition of a carrier signal by applying a substitute pilot to a synchronous demodulator
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