ClassID:

224193

H04H20/47 - 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

Sub-classes:
Recent Application in this class:
#1
20220353628
2022-11-03

SYSTEM AND METHOD FOR TRANSMITTING AT LEAST ONE MULTICHANNEL AUDIO MATRIX ACROSS A GLOBAL NETWORK

#2
20220190944
2022-06-16

INFORMATION EMBEDDED METHOD AND SYSTEM

#3
20210234624
2021-07-29

Method for Displaying Audio Content Currently Available From Other Sources on a Receiving Device

#4
20210021356
2021-01-21

Voice operated electronic device that blocks television commercials and substitutes alternate content therefor

#5
20200021375
2020-01-16

Voice operated electronic device that blocks radio commercials and substitutes alternate audio content

#6
20180109340
2018-04-19

Broadcast receiving apparatus and broadcast receiving method

#7
20180018976
2018-01-18

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

#8
20170179899
2017-06-22

Method and apparatus for level control in blending an audio signal in an in-band on-channel radio system

#9
20150124971
2015-05-07

Audio broadcast sources switching by geographic location

#10
20140119582
2014-05-01

Synchronization of signals for multiple data sinks

#11
20130182850
2013-07-18

Circuits and methods to reduce pin count of a single channel device with a multi-channel serial interface

#12
20130010193
2013-01-10

Direct Digital Encoding and Radio Frequency Modulation for Broadcast Television Applications

#13
20120294448
2012-11-22

Method, medium, and system encoding/decoding multi-channel signal

#14
20120288099
2012-11-15

Method, medium, and system encoding/decoding multi-channel signal

#15
20120275602
2012-11-01

Reducing power consumption in sink devices by having sinks receive only left audio channel or right audio channel

#16
20110142243
2011-06-16

Speaker synchronization technique for wireless multichannel sound data transmission system

#17
20110050996
2011-03-03

Direct digital encoding and radio frequency modulation for broadcast television applications

#18
20100073558
2010-03-25

Direct digital encoding and radio frequency modulation for broadcast television applications

#19
20090274326
2009-11-05

Synchronization of signals for multiple data sinks

#20
20090147961
2009-06-11

Object-based 3-dimensional audio service system using preset audio scenes

#21
20090110201
2009-04-30

Method, medium, and system encoding/decoding multi-channel signal

#22
20060168641
2006-07-27

Audio system for playing back recorded information by remote transmission

#23
20060083384
2006-04-20

Amplitude and phase compensator for BTSC encoder

#24
20060061684
2006-03-23

Direct digital encoding and radio frequency modulation for broadcast television application

#25
20060059535
2006-03-16

Method and apparatus for playing content

#26
20050195337
2005-09-08

Radio vision electronic network/analog output/viewing system

#27
16214975
2020-02-25

System and method for reducing the service switching time between frequencies in a digital radio