Difference between revisions of "MP3 Patents"

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*http://www.audiompeg.com/us_patents.asp
*http://www.audiompeg.com/us_patents.asp


 
The dates have been further corrected based on Philip's patent disclosures for VCD<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> and DTS
 
 
<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>
<ref name=DTS>https://www.ip.philips.com/download_attachment/5992/DVD-Video_Player_-_DTS_PH_Ess_Annex_A_2010feb22.pdf</ref>
<table>
<tr><th>Number<th>Filed<th>Granted<th>Expiration<th>Name
<tr><th colspan=4>Alcatel-Lucent
<tr><td>US 5341457<td>20-Aug-1993<td>23-Aug-1994<td>20-Aug-2013<td>Perceptual coding of audio signals
<tr><td>US RE39,080<td>13-Aug-2002<td>25-Apr-2006<td>22-Sep-2014<td>Rate loop processor for perceptual encoder/decoder Reissue of 5627938 filed 22 sep 1994 granted 6 may 1997
<tr><th colspan=4>Audio MPEG, Inc.
<tr><td>US 4972484<td>21-Jul-1988<td>20-Nov-1990<td>21-Jul-2008<td>Method of transmitting or storing masked sub-band coded audio signals
<tr><td>US 5214678<td>31-May-1990<td>25-May-1993<td>31-May-2010<td>Digital transmission system using subband coding of a digital signal
<tr><td>US 5323396<td>21-Dec-1992<td>21-Jun-1994<td>24-Jun-2011<td>Digital transmission system, transmitter and receiver for use in the transmission system
<tr><td>US 5481643<td>24-Apr-1995<td>2-Jan-1996<td>24-Apr-2015<td>Transmitter, receiver and record carrier for transmitting/receiving at least a first and a second signal component
<tr><td>US 5530655<td>6-Jun-1995<td>25-Jun-1996<td>25-Jun-2013<ref name=VCD /><td>Digital sub-band transmission system with transmission of an additional signal
<tr><td>US 5539829<td>7-Jun-1995<td>23-Jul-1996<td>23-Jul-2013<td>Subband coded digital transmission system using some composite signals
<tr><td>US 5544247<td>25-Oct-1994<td>6-Aug-1996<td>25-Oct-2014<td>Transmission and reception of a first and a second main signal component
<tr><td>US 5606618<td>27-Dec-1993<td>25-Feb-1997<td>23-Jul-2013<td>Subband coded digital transmission system using some composite signals
<tr><td>US 5610985<td>21-Jan-1994<td>11-Mar-1997<td>21-Jan-2014<td>Digital 3-channel transmission of left and right stereo signals and a center signal
<tr><td>US 5740317<td>30-Aug-1995<td>14-Apr-1998<td>30-Aug-2015<td>Process for finding the overall monitoring threshold during a bit-rate-reducing source coding
<tr><td>US 5777992<td>7-Jun-1995<td>7-Jul-1998<td>24-Jun-2011<td>Decoder for decoding and encoded digital signal and a receiver comprising the decoder
<tr><td>US 5878080<td>7-Feb-1997<td>2-Mar-1999<td>7-Feb-2017<td>N-channel transmission, compatible with 2-channel transmission and 1-channel transmission
<tr><td>US 5960037<td>9-Apr-1997<td>28-Sep-1999<td>9-Apr-2017<td>Encoding of a plurality of information signals
<tr><td>US 5991715<td>31-Aug-1995<td>23-Nov-1999<td>31-Aug-2015<td>Perceptual audio signal subband coding using value classes for successive scale factor differences
<tr><td>US 6023490<td>9-Apr-1997<td>8-Feb-2000<td>9-Apr-2017<td>Selection of masked thresholds
<tr><td>US 6289308<td>8-Mar-2000<td>11-Sep-2001<td>24-Jun-2011<td>Encoded wideband digital transmission signal and record carrier recorded with such a signal
<tr><th colspan=4>Split from 6289308
<tr><td>US 7209565<td>23-Dec-2003<td>24-Apr-2007<td>24-Jun-2011<td>Decoding of an encoded wideband digital audio signal in a transmission (padding pit)
<tr><th colspan=4>Thomson
<tr><td>US 4821260<td>16-Dec-1989<td>11-Apr-1989<td>16-Dec-2007<td>Transmission system
<tr><td>US 4942607<td>3-Feb-1988<td>17-Jul-1990<td>3-Feb-2008<td>Method of transmitting an audio signal
<tr><td>US 5214742<td>1-Oct-1990<td>25-May-1993<td>1-Oct-2010<td>Method for transmitting a signal
<tr><td>US 5227990<td>17-Jan-1992<td>13-Jul-1993<td>17-Jan-2012<td>Process for transmitting and receiving a signal
<tr><td>US 5321729<td>26-Apr-1993<td>14-Jun-1994<td>26-Apr-2013<td>Method for transmitting a signal
<tr><td>US 5384811<td>24-Aug-1992<td>24-Jan-1995<td>24-Aug-2012<td>Method for the transmission of a signal
<tr><td>US 5455833<td>26-Apr-1993<td>3-Oct-1995<td>26-Apr-2013<td>Process for the detecting of errors in the transmission of frequency-coded digital signals
<tr><td>US 5559834<td>15-Apr-1994<td>24-Sep-1996<td>15-Apr-2014<td>Method of reducing crosstalk in processing of acoustic or optical signals
<tr><td>US 5579430<td>26-Jan-1995<td>26-Nov-1996<td>26-Jan-2015<td>Digital encoding process
<tr><td>US 5701346<td>12-Sep-1996<td>23-Dec-1997<td>12-Sep-2016<td>Method of coding a plurality of audio signals
<tr><td>US 5703999<td>18-Nov-1996<td>30-Dec-1997<td>18-Nov-2016<td>Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels
<tr><td>US 5706309<td>2-May-1995<td>6-Jan-1998<td>2-May-2015<td>Process for transmitting and/or storing digital signals of multiple channels
<tr><td>US 5736943<td>31-May-1996<td>7-Apr-1998<td>31-May-2016<td>Method for determining the type of coding to be selected for coding at least two signals
<tr><td>US 5742735<td>25-Aug-1994<td>21-Apr-1998<td>25-Aug-2014<td>Digital adaptive transformation coding method
<tr><td>US 5812672<td>15-Dec-1994<td>22-Sep-1998<td>15-Dec-2014<td>Method for reducing data in the transmission and/or storage of digital signals of several dependent channels
<tr><td>US 5924060<td>20-Mar-1997<td>13-Jul-1999<td>20-Mar-2017<td>Digital coding process for transmission or storage of acoustical signals by transforming of scanning values into spectral coefficients
<tr><td>US 6009399<td>16-Apr-1997<td>28-Dec-1999<td>16-Apr-2017<td>Method and apparatus for encoding digital signals employing bit allocation using combinations of different threshold models to achieve desired bit rates
<tr><td>US 6185539<td>26-May-1998<td>6-Feb-2001<td>26-May-2018<td>Process of low sampling rate digital encoding of audio signals




{| style="text-align: left;"
!Number
!Filed
!Granted
!Expiration
!Name
|----
! colspan=2 | 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   
|----
! colspan=2 | Audio MPEG, Inc.
|- style="color:gray"
|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<ref name=VCD />
|Digital transmission system using subband coding of a digital signal           
|----
|US 5323396
|21-Dec-1992
|21-Jun-1994
|24-Jun-2011<ref name=VCD />
|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=DTS />
|Digital sub-band transmission system with transmission of an additional signal           
|----
|US 5539829
|7-Jun-1995
|23-Jul-1996
|23-Jul-2013<ref name=VCD />
|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<ref name=DTS />
|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<ref name=VCD />
|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<ref name=DTS />
|Encoded wideband digital transmission signal and record carrier recorded with such a signal       
|----
! colspan=2 | Split from 6289308
|----
|US 7209565
|23-Dec-2003
|24-Apr-2007
|24-Jun-2011<ref name=VCD /><ref name=DTS />
|Decoding of an encoded wideband digital audio signal in a transmission (padding bit)
|----
! colspan=2 | Thomson
|- style="color:gray"
|US 4821260
|16-Dec-1989
|11-Apr-1989
|16-Dec-2007
|Transmission system                   
|- style="color:gray"
|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 ==
== Notes ==
{{Reflist}}
<references/>

Revision as of 13:16, 29 April 2010

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

The dates have been further corrected based on Philip's patent disclosures for VCD<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> and DTS <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<ref name=VCD /> Digital transmission system using subband coding of a digital signal
US 5323396 21-Dec-1992 21-Jun-1994 24-Jun-2011<ref name=VCD /> 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=DTS /> Digital sub-band transmission system with transmission of an additional signal
US 5539829 7-Jun-1995 23-Jul-1996 23-Jul-2013<ref name=VCD /> 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<ref name=DTS /> 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<ref name=VCD /> 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<ref name=DTS /> 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<ref name=VCD /><ref name=DTS /> Decoding of an encoded wideband digital audio signal in a transmission (padding bit)
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

<references/>