ClassID:

224194

H04H20/48 - CPC Classification

Classification description:

Arrangements for broadcast or for distribution combined with broadcast; Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups - specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems

Recent Application in this class:
#1
20220416923
2022-12-29

METHOD FOR PROVIDING BROADCAST SIGNAL FREQUENCY AND SYSTEM FOR PROVIDING THE SAME

#2
20190260505
2019-08-22

FM system modes for HD radio

#3
20190253163
2019-08-15

Analog and digital audio alignment in the HD radio exciter engine (exgine)

#4
20190123841
2019-04-25

Audio processor apparatus, methods and computer program products using integrated diversity delay error compensation

#5
20180018976
2018-01-18

Stereo-phonic frequency modulation receiver and method for separating dual sound channels

#6
20170317772
2017-11-02

Method for processing an FM stereo signal

#7
20170126341
2017-05-04

FAM TRANSMITTING APPARATUS AND METHOD FOR COMBINING FM SIGNAL AND DIGITAL MODULATED AM SIGNAL

#8
20150078554
2015-03-19

WIRELESS PERSONAL LISTENING SYSTEM AND METHOD

#9
20120155649
2012-06-21

Wireless personal listening system and method

#10
20110211658
2011-09-01

SYSTEM AND METHOD OF PERFORMING DIGITAL MULTI-CHANNEL AUDIO SIGNAL DECODING

#11
20110170698
2011-07-14

FREQUENCY MODULATOR AND FM TRANSMISSION CIRCUIT USING THE SAME

#12
20110116655
2011-05-19

Apparatus and method for audio conversion

#13
20100245676
2010-09-30

Radio vision electronic network / analog output / viewing system

#14
20100213916
2010-08-26

Frequency modulator and FM transmission circuit using the same

#15
20100177902
2010-07-15

Audio transmission system

#16
20090310790
2009-12-17

Transmission of audio signals

#17
20090268916
2009-10-29

FM TRANSMITTER

#18
20090028346
2009-01-29

FM stereo transmitter and a digitized frequency modulation stereo multiplexing circuit thereof

#19
20080298456
2008-12-04

Hybrid Digital Digital/Analog Fm Multiplexer Transmitter

#20
20080260165
2008-10-23

DIGITAL MODULATOR AND DIGITAL MODULATING METHOD

#21
20080192875
2008-08-14

Analog/digital circuit

#22
20080187142
2008-08-07

FM TRANSMITTER

#23
20080139122
2008-06-12

RDS Encoder For FM Transmitter

#24
20080069268
2008-03-20

Rc Filter Pole for Fm Transmitters

#25
20070273563
2007-11-29

Method and apparatus of performing sample rate conversion of a multi-channel audio signal

#26
20070263877
2007-11-15

Multichannel spectral mapping audio apparatus and method

#27
20070237333
2007-10-11

FM transmitter using switched capacitor filter

#28
20070211905
2007-09-13

Multichannel spectral mapping audio apparatus and method

#29
20070206821
2007-09-06

Multichannel spectral mapping audio apparatus and method

#30
20070206816
2007-09-06

Multichannel spectral mapping audio apparatus and method

#31
20070206815
2007-09-06

Multichannel spectral mapping audio apparatus and method

#32
20070206814
2007-09-06

Multichannel spectral mapping audio apparatus and method

#33
20070206813
2007-09-06

Multichannel spectral mapping audio apparatus and method

#34
20070206812
2007-09-06

Multichannel spectral mapping audio apparatus and method

#35
20070206811
2007-09-06

Multichannel spectral mapping audio apparatus and method

#36
20070206810
2007-09-06

Multichannel spectral mapping audio apparatus and method

#37
20070206809
2007-09-06

Multichannel spectral mapping audio apparatus and method

#38
20070206808
2007-09-06

Multichannel spectral mapping audio apparatus and method

#39
20070206807
2007-09-06

Multichannel spectral mapping audio apparatus and method

#40
20070206806
2007-09-06

Multichannel spectral mapping audio apparatus and method

#41
20070206805
2007-09-06

Multichannel spectral mapping audio apparatus and method

#42
20070206804
2007-09-06

Multichannel spectral mapping audio apparatus and method

#43
20070206803
2007-09-06

Multichannel spectral mapping audio apparatus and method

#44
20070206802
2007-09-06

Multichannel spectral mapping audio apparatus and method

#45
20070206801
2007-09-06

Multichannel spectral mapping audio apparatus and method

#46
20070206800
2007-09-06

Multichannel spectral mapping audio apparatus and method

#47
20070203596
2007-08-30

FM TRANSMISSION

#48
20070195961
2007-08-23

FM transmitter

#49
20070076893
2007-04-05

Multichannel spectral mapping audio apparatus and method with dynamically varying mapping coefficients

#50
20070071246
2007-03-29

FM transmitter

#51
20060251196
2006-11-09

Recovering a signal without a phase locked loop

#52
20060232868
2006-10-19

System and method of performing digital multi-channel audio signal decoding

#53
20060188102
2006-08-24

BTSC encoding method with digital FM modulation

#54
20060088168
2006-04-27

Multichannel spectral vector mapping audio apparatus and method

#55
20060079197
2006-04-13

System and method for SAP FM demodulation

#56
20060050807
2006-03-09

Bandwidth reduction of an FM broadcast signal using a baseband precompensation technique

#57
20060045277
2006-03-02

Multichannel spectral mapping audio encoding apparatus and method with dynamically varying mapping coefficients

#58
20050101284
2005-05-12

Scaling adjustment using pilot signal

#59
20050094820
2005-05-05

Scaling adjustment to enhance stereo separation

#60
20050036627
2005-02-17

Mechanism for using the allpass decomposition architecture for the cauer low pass filter used in a BTSC

#61
13800215
2016-05-10

Digital FM stereo receiver architecture