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Class Information
Number: 369/2
Name: Dynamic information storage or retrieval > Combined independent audio systems > Changeover between audio systems
Description: Subject matter having switching structure to selectively connect the independent audio systems.


Sub-classes under this class:

Class Number Class Name Patents
369/3 Fading between plural signals 25


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7603190 Digital recording/reproducing apparatus Oct. 13, 2009
7564983 Audio playback device capable of independent operations in dual modes Jul. 21, 2009
7436738 Play-back device Oct. 14, 2008
7266206 Channel down mixing apparatus for car audio system Sep. 4, 2007
7266390 Network interface cassette adapter and method Sep. 4, 2007
7236431 Semiconductor integrated circuit for audio system Jun. 26, 2007
7221625 Multi-channel acoustic apparatus with DVD reproduction function May. 22, 2007
7212469 Mixing recorder, control method therefore, and computer-readable medium including program for implementing the control method May. 1, 2007
7209410 Set of electronic apparatuses having first and second electronic devices, and computer program product Apr. 24, 2007
7203142 Multi-source surround audio apparatus Apr. 10, 2007
7170828 Removable face plate compressed digital music player Jan. 30, 2007
7154819 Adaptive high fidelity reproduction system Dec. 26, 2006
7120463 Network interface cassette adapter and method Oct. 10, 2006
7016266 Sharing device for multiple audio sources Mar. 21, 2006
6969794 Music playback apparatus and music playback system Nov. 29, 2005
6946971 Electronic equipment control system and control method Sep. 20, 2005
6941180 Audio cassette emulator Sep. 6, 2005
6842417 Audio system Jan. 11, 2005
6738318 Audio reproduction system which adaptively assigns different sound parts to different reproduction parts May. 18, 2004
6737570 Interactive personal audio device May. 18, 2004
6728167 Background music controller Apr. 27, 2004
6693853 Reproducing unit for recording medium Feb. 17, 2004
6631098 Dual-mode MP3 player Oct. 7, 2003
6629197 Method and system for storing digital audio data and emulating multiple CD-changer units Sep. 30, 2003
6542442 Scent emitting device Apr. 1, 2003
6535462 Digital sound-signal broadcaster Mar. 18, 2003
6426922 Information reproducing system including a master and a slave system Jul. 30, 2002
6373791 Information reproducing apparatus, information reproducing method, and program storage medium Apr. 16, 2002
6327633 Solid state audio system Dec. 4, 2001
6301513 Vocal information system Oct. 9, 2001
6185163 Vehicle audio system having random access player with play list control Feb. 6, 2001
6147938 Vehicle electronic system Nov. 14, 2000
6137655 Cassette adaptor with adjustable magnetic head Oct. 24, 2000
6134192 Combined multiple compact disc player and radio receiver Oct. 17, 2000
6101474 Voice recording/reproducing apparatus Aug. 8, 2000
6091672 Adapter for coupling audio signals to front-loading or side-loading cassette playback decks, and method for using same Jul. 18, 2000
6061306 Portable digital player compatible with a cassette player May. 9, 2000
6052471 Smart audio receiver that automatically select an input audio source Apr. 18, 2000
6041023 Portable digital radio and compact disk player Mar. 21, 2000
6011756 Audiofrequency signal adapter with a rotary wire locating member Jan. 4, 2000
5999497 Karaoke machine including playback reservation system Dec. 7, 1999
5986979 Play list control method and system for Nov. 16, 1999
5941711 Karaoke apparatus with a personal data reading function Aug. 24, 1999
5910866 Device for connecting signals to a tape reproducing apparatus in which a signal transmitting head is biased to abut a magnetic head of a tape reproducing apparatus Jun. 8, 1999
5910933 Stand alone optical disc player module Jun. 8, 1999
5841742 Optical disk unit using a single demodulator circuit for demodulating two disk players Nov. 24, 1998
5815468 Dual player automotive audio system capable of playing back two different types of recording mediums Sep. 29, 1998
5802017 Information-signal recording apparatus and recording mode inquiring/specifying method Sep. 1, 1998
5794138 Satellite broadcast system receiver Aug. 11, 1998
5790481 Retrofitable CD player system Aug. 4, 1998

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