MPEG-2
- Alcatel-Lucent [104]
- Audio MPEG, Inc [107]
- US 4,972,484 -- Method of transmitting or storing masked sub-band coded audio signals -- Filed: July 21, 1988 Granted: November 20, 1990 [108]
- US 5,214,678 -- Digital transmission system using subband coding of a digital signal -- Filed: May 31, 1990 Granted: May 25, 1993 [109]
- US 5,323,396 -- Digital transmission system, transmitter and receiver for use in the transmission system -- Filed: December 21, 1992 Granted: June 21, 1994 [110]
- US 5,539,829 -- Subband coded digital transmission system using some composite signals -- Filed: June 7, 1995 Granted: July 23, 1996 [111]
- US 5,606,618 -- Subband coded digital transmission system using some composite signals -- Filed: December 27, 1993 Granted: February 25, 1997 [112]
- US 5,530,655 -- Digital sub-band transmission system with transmission of an additional signal -- Filed: June 6, 1995 Granted: June 25, 1996 [113]
- US 5,777,992 -- Decoder for decoding and encoded digital signal and a receiver comprising the decoder -- Filed: June 7, 1995 Granted: July 7, 1998 [114]
- US 6,289,308 -- Encoded wideband digital transmission signal and record carrier recorded with such a signal -- Filed: March 8, 2000 Granted: September 11, 2001 [115]
- US 5,481,643 -- Transmitter, receiver and record carrier for transmitting/receiving at least a first and a second signal component -- Filed: April 24, 1995 Granted: January 2, 1996 [116]
- US 5,544,247 -- Transmission and reception of a first and a second main signal component -- Filed: October 25, 1994 Granted: August 6, 1996 [117]
- US 5,610,985 -- Digital 3-channel transmission of left and right stereo signals and a center signal -- Filed: January 21, 1994 Granted: March 11, 1997 [118]
- US 5,740,317 -- Process for finding the overall monitoring threshold during a bit-rate-reducing source coding -- Filed: August 30, 1995 Granted: April 14, 1998 [119]
- US 5,878,080 -- N-channel transmission, compatible with 2-channel transmission and 1-channel transmission -- Filed: February 7, 1997 Granted: March 2, 1999 [120]
- US 5,960,037 -- Encoding of a plurality of information signals -- Filed: April 9, 1997 Granted: September 28, 1999 [121]
- US 5,991,715 -- Perceptual audio signal subband coding using value classes for successive scale factor differences -- Filed: August 31, 1995 Granted: November 23, 1999 [122]
- US 6,023,490 -- Encoding apparatus for encoding a plurality of information signals -- Filed: April 9, 1997 Granted: February 8, 2000 [123]
- Thomson [124]
- US 4,821,260 Expired [125]
- US 4,942,607 Expired [126]
- US 5,214,742 -- Method for transmitting a signal -- Filed: October 1, 1990 Granted: May 25, 1993 [127]
- US 5,227,990 -- Process for transmitting and receiving a signal -- Filed: January 17, 1992 Granted: July 13, 1993 [128]
- US 5,384,811 -- Method for the transmission of a signal -- Filed: August 24, 1992 Granted: January 24, 1995 [129]
- US 5,736,943 -- Method for determining the type of coding to be selected for coding at least two signals -- Filed: May 31, 1996 Granted: April 7, 1998 [130]
- US 5,455,833 -- Process for the detecting of errors in the transmission of frequency-coded digital signals -- Filed: April 26, 1993 Granted: October 3, 1995 [131]
- US 5,559,834 -- Method of reducing crosstalk in processing of acoustic or optical signals -- Filed: April 15, 1994 Granted: September 24, 1996 [132]
- US 5,321,729 -- Method for transmitting a signal -- Filed: April 26, 1993 Granted: June 14, 1994 [133]
- US 5,706,309 -- Process for transmitting and/or storing digital signals of multiple channels -- Filed: May 2, 1995 Granted: January 6, 1998 [134]
- US 5,701,346 -- Method of coding a plurality of audio signals -- Filed: September 12, 1996 Granted: December 23, 1997 [135]
- US 5,742,735 -- Digital adaptive transformation coding method -- Filed: August 25, 1994 Granted: April 21, 1998 [136]
- US 5,812,672 -- Method for reducing data in the transmission and/or storage of digital signals of several dependent channels -- Filed: December 15, 1994 Granted: September 22, 1998 [137]
- US 5,579,430 -- Digital encoding process -- Filed: January 26, 1995 Granted: November 26, 1996 [138]
- US 6,185,539 -- Process of low sampling rate digital encoding of audio signals -- Filed: May 26, 1998 Granted: February 6, 2001 [139]
- US 6,009,399 -- Method and apparatus for encoding digital signals employing bit allocation using combinations of different threshold models to achieve desired bit rates -- Filed: April 16, 1997 Granted: December 28, 1999 [140]
- US 5,924,060 -- Digital coding process for transmission or storage of acoustical signals by transforming of scanning values into spectral coefficients -- Filed: March 20, 1997 Granted: July 13, 1999 [141]
- US 5,703,999 -- Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels -- Filed: November 18, 1996 Granted: December 30, 1997 [142]
According to the MPEG-LA Licensing Agreement MPEG-LA, any use of MPEG-2 technology is subject to royalties.
- Encoders are subject to a royalty of $2.50 per unit.
- Decoders are subject to a royalty of $2.50 per unit.[9]
- Royalty-based sales of encoders and decoders are subject to different rules and $2.50 per unit.[9]
- Also, any packaged medium (DVDs/Data Streams) is subject to licence fees according to length of recording/broadcast.
In the case of free software such as VLC media player (which uses the ffmpeg library) and in which the software is not sold, the end-user bears the royalty.
[
See also
[
References
- ^ ISO/IEC 13818 MPEG-2 at the ISO Store.
- ^ a b ITU-T Rec. H.222.0
- ^ ITU-T Rec. H.262
- ^ Mpeg La
- ^ audioMPEG.com - - - US Patents
- ^ audioMPEG.com - - - patent management and licensing company specializing in the licensing of audio technology
- ^ Richard M Stallman, Patents - Barriers to development Theora Video and Vorbis Audio
- ^ http://www.mpegla.com/m2/m2-att1.pdf
- ^ a b MPEG-2 PATENT PORTFOLIO LICENSE
[
External links
- A Beginners Guide for MPEG-2 Standard
- MPEG-2 Overview
- MPEG-2 video compression
- MIT 6.344 – Slides from lectures on video compression at MIT.
- A Discrete Cosine Transform tutorial
- IPTV MPEG and Quality of Experience Testing
- OpenIPMP: Open Source DRM Project for MPEG-2
- ISO/IEC 13818 – MPEG-2 at the ISO Store.
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