MP3 Patents

Based on http://www.kuro5hin.org/story/2008/7/18/232618/312 which in turn is based on:

• http://www.tunequest.org/a-big-list-of-mp3-patents/20070226/
• http://www.audiompeg.com/us_patents.asp

<ref name=VCD>https://www.ip.philips.com/download_attachment/5781/Video_CD_Player_Video_CD_part_Philips_France_Telecom_IRT_Ess_Annex_A_2010apr02.pdf</ref> <ref name=DTS>https://www.ip.philips.com/download_attachment/5992/DVD-Video_Player_-_DTS_PH_Ess_Annex_A_2010feb22.pdf</ref>

Number	Filed	Granted	Expiration	Name
Alcatel-Lucent
US 5341457	20-Aug-1993	23-Aug-1994	20-Aug-2013	Perceptual coding of audio signals
US RE39,080	13-Aug-2002	25-Apr-2006	22-Sep-2014	Rate loop processor for perceptual encoder/decoder Reissue of 5627938 filed 22 sep 1994 granted 6 may 1997
Audio MPEG, Inc.
US 4972484	21-Jul-1988	20-Nov-1990	21-Jul-2008	Method of transmitting or storing masked sub-band coded audio signals
US 5214678	31-May-1990	25-May-1993	31-May-2010	Digital transmission system using subband coding of a digital signal
US 5323396	21-Dec-1992	21-Jun-1994	24-Jun-2011	Digital transmission system, transmitter and receiver for use in the transmission system
US 5481643	24-Apr-1995	2-Jan-1996	24-Apr-2015	Transmitter, receiver and record carrier for transmitting/receiving at least a first and a second signal component
US 5530655	6-Jun-1995	25-Jun-1996	25-Jun-2013<ref name=VCD />	Digital sub-band transmission system with transmission of an additional signal
US 5539829	7-Jun-1995	23-Jul-1996	23-Jul-2013	Subband coded digital transmission system using some composite signals
US 5544247	25-Oct-1994	6-Aug-1996	25-Oct-2014	Transmission and reception of a first and a second main signal component
US 5606618	27-Dec-1993	25-Feb-1997	23-Jul-2013	Subband coded digital transmission system using some composite signals
US 5610985	21-Jan-1994	11-Mar-1997	21-Jan-2014	Digital 3-channel transmission of left and right stereo signals and a center signal
US 5740317	30-Aug-1995	14-Apr-1998	30-Aug-2015	Process for finding the overall monitoring threshold during a bit-rate-reducing source coding
US 5777992	7-Jun-1995	7-Jul-1998	24-Jun-2011	Decoder for decoding and encoded digital signal and a receiver comprising the decoder
US 5878080	7-Feb-1997	2-Mar-1999	7-Feb-2017	N-channel transmission, compatible with 2-channel transmission and 1-channel transmission
US 5960037	9-Apr-1997	28-Sep-1999	9-Apr-2017	Encoding of a plurality of information signals
US 5991715	31-Aug-1995	23-Nov-1999	31-Aug-2015	Perceptual audio signal subband coding using value classes for successive scale factor differences
US 6023490	9-Apr-1997	8-Feb-2000	9-Apr-2017	Selection of masked thresholds
US 6289308	8-Mar-2000	11-Sep-2001	24-Jun-2011	Encoded wideband digital transmission signal and record carrier recorded with such a signal
Split from 6289308
US 7209565	23-Dec-2003	24-Apr-2007	24-Jun-2011	Decoding of an encoded wideband digital audio signal in a transmission (padding pit)
Thomson
US 4821260	16-Dec-1989	11-Apr-1989	16-Dec-2007	Transmission system
US 4942607	3-Feb-1988	17-Jul-1990	3-Feb-2008	Method of transmitting an audio signal
US 5214742	1-Oct-1990	25-May-1993	1-Oct-2010	Method for transmitting a signal
US 5227990	17-Jan-1992	13-Jul-1993	17-Jan-2012	Process for transmitting and receiving a signal
US 5321729	26-Apr-1993	14-Jun-1994	26-Apr-2013	Method for transmitting a signal
US 5384811	24-Aug-1992	24-Jan-1995	24-Aug-2012	Method for the transmission of a signal
US 5455833	26-Apr-1993	3-Oct-1995	26-Apr-2013	Process for the detecting of errors in the transmission of frequency-coded digital signals
US 5559834	15-Apr-1994	24-Sep-1996	15-Apr-2014	Method of reducing crosstalk in processing of acoustic or optical signals
US 5579430	26-Jan-1995	26-Nov-1996	26-Jan-2015	Digital encoding process
US 5701346	12-Sep-1996	23-Dec-1997	12-Sep-2016	Method of coding a plurality of audio signals
US 5703999	18-Nov-1996	30-Dec-1997	18-Nov-2016	Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels
US 5706309	2-May-1995	6-Jan-1998	2-May-2015	Process for transmitting and/or storing digital signals of multiple channels
US 5736943	31-May-1996	7-Apr-1998	31-May-2016	Method for determining the type of coding to be selected for coding at least two signals
US 5742735	25-Aug-1994	21-Apr-1998	25-Aug-2014	Digital adaptive transformation coding method
US 5812672	15-Dec-1994	22-Sep-1998	15-Dec-2014	Method for reducing data in the transmission and/or storage of digital signals of several dependent channels
US 5924060	20-Mar-1997	13-Jul-1999	20-Mar-2017	Digital coding process for transmission or storage of acoustical signals by transforming of scanning values into spectral coefficients
US 6009399	16-Apr-1997	28-Dec-1999	16-Apr-2017	Method and apparatus for encoding digital signals employing bit allocation using combinations of different threshold models to achieve desired bit rates
US 6185539	26-May-1998	6-Feb-2001	26-May-2018	Process of low sampling rate digital encoding of audio signals Notes 1 | references-column-count references-column-count-{{{1}}} }} }} }}" {{#if: | style="-moz-column-width:{{{colwidth}}}; column-width:{{{colwidth}}};" | {{#if: | style="-moz-column-count:{{{1}}}; column-count:{{{1}}};" }} }}> <references group=""></references>