MPEG-2 is a standard for "the generic coding of moving pictures and associated audio information".[1] It describes a combination of lossy video compression and lossy audio data compression methods which permit storage and transmission of movies using currently available storage media and transmission bandwidth.
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MPEG-2 is widely used as the format of digital television signals that are broadcast by terrestrial (over-the-air), cable, and direct broadcast satellite TV systems. It also specifies the format of movies and other programs that are distributed on DVD and similar discs. As such, TV stations, TV receivers, DVD players, and other equipment are often designed to this standard. MPEG-2 was the second of several standards developed by the Moving Pictures Expert Group (MPEG) and is an international standard (ISO/IEC 13818). Parts 1 and 2 of MPEG-2 were developed in a joint collaborative team with ITU-T, and they have a respective catalog number in the ITU-T Recommendation Series.
While MPEG-2 is the core of most digital television and DVD formats, it does not completely specify them. Regional institutions can adapt it to their needs by restricting and augmenting aspects of the standard. See Video profiles and levels.
MPEG-2 includes a Systems section, part 1, that defines two distinct, but related, container formats. One is the MPEG transport stream, designed to carry digital video and audio over possibly lossy media, where the beginning and the end of the stream may not be identified, such as broadcasting or magnetic tape, examples of which include ATSC brosdcasting, DVB, SBTVD broadcasting, and HDV recording on tape. MPEG-2 Systems also defines the MPEG program stream, a container format designed for file-based media such as hard disk drives, optical discs and flash memory.
MPEG-2 Systems is formally known as ISO/IEC 13818-1 and as ITU-T Rec. H.222.0.[2][3] ISO authorized the "SMPTE Registration Authority, LLC" as the registration authority for MPEG-2 format identifiers. The registration descriptor of MPEG-2 transport is provided by ISO 13818-1 in order to enable users of the standard to unambiguously carry data when its format is not necessarily a recognized international standard. This provision will permit the MPEG-2 transport standard to carry all types of data while providing for a method of unambiguous identification of the characteristics of the underlying private data.[4]
The Video section, part 2 of MPEG-2, is similar to the previous MPEG-1 standard, but also provides support for interlaced video, the format used by analog broadcast TV systems. MPEG-2 video is not optimized for low bit-rates, especially less than 1 Mbit/s at standard definition resolutions. All standards-compliant MPEG-2 Video decoders are fully capable of playing back MPEG-1 Video streams conforming to the Constrained Parameters Bitstream syntax. MPEG-2/Video is formally known as ISO/IEC 13818-2 and as ITU-T Rec. H.262.[5]
With some enhancements, MPEG-2 Video and Systems are also used in some HDTV transmission systems.
MPEG-2 introduces new audio encoding methods compared to MPEG-1:[6]
The MPEG-2 Audio section, defined in Part 3 (ISO/IEC 13818-3) of the standard, enhances MPEG-1's audio by allowing the coding of audio programs with more than two channels, up to 5.1 multichannel. This method is backwards-compatible (also known as MPEG-2 BC[7][8][9][10]), allowing MPEG-1 audio decoders to decode the two main stereo components of the presentation.[11] MPEG-2 part 3 also defined additional bit rates and sample rates for MPEG-1 Audio Layer I, II and III.[12]
MPEG-2 BC (backward compatible with MPEG-1 audio formats)[7][8][11]
Part 7 (ISO/IEC 13818-7) of the MPEG-2 standard specifies a rather different, non-backwards-compatible audio format[9] (also known as MPEG-2 NBC[7][8][13]). Part 7 is referred to as MPEG-2 AAC. AAC is more efficient than the previous MPEG audio standards, and is in some ways less complicated than its predecessor, MPEG-1 Audio, Layer 3, in that it does not have the hybrid filter bank. It supports from 1 to 48 channels at sampling rates of 8 to 96 kHz, with multichannel, multilingual, and multiprogram capabilities.[6] Advanced Audio is also defined in Part 3 of the MPEG-4 standard.
MPEG-2 NBC (Non-Backward Compatible)[7][8]
MPEG-2 standards were published as parts of ISO/IEC 13818. Each part covers a certain aspect of the whole specification.
(Part 8: 10-bit video extension. Primary application was studio video. Part 8 has been withdrawn due to lack of interest by industry.)
Part | Number | First public release date (First edition) | Latest public release date (edition) | Latest amend- ment | Identical ITU-T Rec. | Title | Description |
---|---|---|---|---|---|---|---|
Part 1 | ISO/IEC 13818-1 | 1996 | 2007 | 2009[16] (2011 or 2012[17][18][19][20]) | H.222.0 | Systems | |
Part 2 | ISO/IEC 13818-2 | 1996 | 2000 | 2010[5][21](2011[22]) | H.262 | Video | |
Part 3 | ISO/IEC 13818-3 | 1995 | 1998 | Audio | MPEG-2 BC - backwards compatible with MPEG-1 Audio | ||
Part 4 | ISO/IEC 13818-4 | 1998 | 2004 | 2009[23] | Conformance testing | ||
Part 5 | ISO/IEC TR 13818-5 | 1997 | 2005 | Software simulation | |||
Part 6 | ISO/IEC 13818-6 | 1998 | 1998 | 2001[24] | Extensions for DSM-CC | extensions for Digital Storage Media Command and Control[25][26] | |
Part 7 | ISO/IEC 13818-7 | 1997 | 2006 | 2007[27] | Advanced Audio Coding (AAC) | MPEG-2 NBC Audio - Non-Backwards Compatible with MPEG-1 Audio | |
Part 8 | dropped | 10-Bit Video | The work was terminated because of low industry's interest.[28][29] It was started in recognition of the need to support studio-quality video signals quantized with 10 bits per component. | ||||
Part 9 | ISO/IEC 13818-9 | 1996 | 1996 | Extension for real time interface for systems decoders | |||
Part 10 | ISO/IEC 13818-10 | 1999 | 1999 | Conformance extensions for Digital Storage Media Command and Control (DSM-CC) | |||
Part 11 | ISO/IEC 13818-11 | 2004 | 2004 | IPMP on MPEG-2 systems | Intellectual Property Management and Protection on the MPEG-2 system[30][31] (XML IPMP messages are also defined in ISO/IEC 23001-3[32]) |
MPEG-2 evolved out of the shortcomings of MPEG-1.
MPEG-1's known weaknesses:
.mpg, .mpeg, m2v, .mp2, mp3 are some of a number of filename extensions used for MPEG-1 or MPEG-2 audio and video file formats.
The DVD-Video standard uses MPEG-2 video, but imposes some restrictions:
HDV is a format for recording and playback of high-definition MPEG-2 video on a DV cassette tape.
MOD and TOD are recording formats for use in consumer digital file-based camcorders.
XDCAM is a professional file-based video recording format.
Application-specific restrictions on MPEG-2 video in the DVB standard:
Allowed resolutions for SDTV:
For HDTV:
The ATSC A/53 standard used in the United States, uses MPEG-2 video at the Main Profile @ High Level, with additional restrictions such as the maximum bitrate of 19.4 Mbit/s for broadcast television and 38.8 Mbit/s for cable television, 4:2:0 chroma subsampling format, and mandatory colorimetry information.
ATSC allows the following video resolutions, aspect ratios, and frame/field rates:
ATSC standard A/63 defines additional resolutions and aspect rates for 50 Hz (PAL) signal.
The ATSC specification and MPEG-2 allow the use of progressive frames, even within an interlaced video sequence. For example, a station that transmits 1080i60 video sequence can use a coding method where those 60 fields are coded with 24 progressive frames and metadata instructs the decoder to interlace them and perform 3:2 pulldown before display. This allows broadcasters to switch between 60 Hz interlaced (news, soap operas) and 24 Hz progressive (prime-time) content without ending the MPEG-2 sequence and introducing a several seconds of delay as the TV switches formats. This is the reason why 1080p30 and 1080p24 sequences allowed by the ATSC specification are not used in practice.
The 1080-line formats are encoded with 1920 × 1088 pixel luma matrices and 960 × 540 chroma matrices, but the last 8 lines are discarded by the MPEG-2 decoding and display process.
ATSC A/72 is the newest revision of ATSC standards for digital television which allows the use of H.264/AVC codec and 1080p60 signal.
MPEG-2 audio was a contender for the ATSC standard during the DTV "Grand Alliance" shootout, but lost out to Dolby AC-3.
Technical features of MPEG-2 in ATSC are also valid for ISDB-T, except that in the main TS has aggregated a second program for mobile devices compressed in MPEG-4 H.264 AVC for video and AAC-LC for audio, mainly known as 1seg.
MPEG Licensing Authority, a private patent licensing organization, has acquired rights from over 20 corporations and one university to license a patent pool of approximately 640 worldwide patents, which it claims are the "essential" to use of MPEG-2 technology, although many of the patents have since expired.[33][34] Where software patentability is upheld, the use of MPEG-2 requires the payment of licensing fees to the patent holders. Other patents are licensed by Audio MPEG, Inc.[35] The development of the standard itself took less time than the patent negotiations.[36][37] Patent pooling between essential and peripheral patent holders in the MPEG-2 pool is the subject of a study by the University of Wisconsin.[38]
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---|---|---|---|---|---|---|---|
4833543 | 24 dec 1986 | 23 May 1989 | 24 dec 1986 | 24 dec 2006 | Image processing system and phaselocked loop used therein | [2] file+20: [2006, 12, 24] grant+17:[2006, 5, 23] | Alcatel-Lucent |
4970590 | 21 dec 1989 | 13 nov 1990 | 21 dec 1989 | 21 dec 2009 | System and device for package multiplexing in transmission of many data flows generated by a sole algorithm | [3] file+20: [2009, 12, 21] grant+17:[2007, 11, 13] | Alcatel-Lucent |
5453790 | 26 mar 1993 | 26 sep 1995 | 26 mar 1993 | 26 mar 2013 | Video decoder having asynchronous operation with respect to a video display | [4] file+20: [2013, 3, 26] grant+17:[2012, 9, 26] | Alcatel-Lucent |
5291284 | 23 jul 1991 | 01 mar 1994 | 12 dec 1989 | 01 mar 2011 | Predictive coding and decoding with error drift reduction | [5] file+20: [2011, 7, 23] pct_file+20:[2009, 12, 12] grant+17:[2011, 3, 1] | British Telecommunications plc |
4982270 | 03 feb 1989 | 01 jan 1991 | 03 feb 1989 | 03 feb 2009 | Video data transmitting system | [6] file+20: [2009, 2, 3] grant+17:[2008, 1, 1] | Canon Inc. |
5068724 | 15 jun 1990 | 26 nov 1991 | 15 jun 1990 | 15 jun 2010 | Adaptive motion compensation for digital television | [7] file+20: [2010, 6, 15] grant+17:[2008, 11, 26] | CIF LICENSING, LLC |
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5093720 | 20 aug 1990 | 03 mar 1992 | 20 aug 1990 | 20 aug 2010 | Motion compensation for interlaced digital television signals | [9] file+20: [2010, 8, 20] grant+17:[2009, 3, 3] | CIF LICENSING, LLC |
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5949489 | 31 jul 1998 | 07 sep 1999 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [50] file+20: [2018, 7, 31] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, the entire contents of which are hereby incorporated by reference, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a division of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442. | Mitsubishi |
5963258 | 31 jul 1998 | 05 oct 1999 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [51] file+20: [2018, 7, 31] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, the entire contents of which are hereby incorporated by reference, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a continuation of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442. | Mitsubishi |
5970175 | 26 oct 1998 | 19 oct 1999 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [52] file+20: [2018, 10, 26] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235 filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. | Mitsubishi |
5990960 | 09 dec 1998 | 23 nov 1999 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [53] file+20: [2018, 12, 9] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220 which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which is hereby incorporated by reference. | Mitsubishi |
6002439 | 27 May 1999 | 14 dec 1999 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [54] file+20: [2019, 5, 27] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of co-pending application Ser. No. 09/207,919, filed on Dec. 9, 1998, now allowed, which is a continuation of application Ser. No. 08/803,235, filed Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299, filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. | Mitsubishi |
6097759 | 22 nov 1999 | 01 aug 2000 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [55] file+20: [2019, 11, 22] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 09/207,919, filed on Dec. 9, 1998, now U.S. Pat. No. 5,990,960, which is a divisional of application Ser. No. 08/803,235, filed on Feb. 20, 1997, now U.S. Pat. No. 5,867,220, which is a continuation of application Ser. No. 08/121,293, filed on Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299, filed on Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. | Mitsubishi |
6188794 | 20 May 1999 | 13 feb 2001 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [56] file+20: [2019, 5, 20] related_patent+20:[2012, 10, 16] Case Text: This application is a divisional of application Ser. No. 09/178,619 filed Oct. 26, 1998 now U.S. Pat. No. 5,427,678, now allowed, which is a Div. of Ser. No. 08/803,235 filed Feb. 20, 1997, U.S. Pat. No. 5,867,220, which is a Cont. of Ser. No. 08/121,293 filed Sep. 13, 1993, U.S. Pat. No. 5,638,127, which is a Div. of Ser. No. 07/962,299 filed Oct. 16, 1992, U.S. Pat. No. 5,274,442. | Mitsubishi |
6307973 | 04 dec 2000 | 23 oct 2001 | 16 oct 1992 | 16 oct 2012 | Image signal coding system | [57] file+20: [2020, 12, 4] related_patent+20:[2012, 10, 16] term extension 0 days Case Text: This application is a divisional application under 37 C.F.R. .sctn. 1.53(b) of prior application Ser. No. 09/315,038 filed May 20, 1999, now U.S. Pat. No. 6,188,794 which is a divisional of application Ser. No. 09/178,619 filed Oct. 26, 1998, now U.S. Pat. No. 5,970,175, which is a divisional of application Ser. No. 08/803,235 filed Feb. 20, 1997, now U.S. Pat. No. 5,867,220 which is a continuation of application Ser. No. 08/121,293 filed Sep. 13, 1993, now U.S. Pat. No. 5,638,127, which is a divisional of application Ser. No. 07/962,299 filed Oct. 16, 1992, now U.S. Pat. No. 5,274,442, the entire contents of which are hereby incorporated by reference. | Mitsubishi |
7362805 | 02 mar 2006 | 22 apr 2008 | 29 jan 1993 | 29 jan 2013 | High efficiency encoder and video information recording/reproducing apparatus | [58] file+20: [2026, 3, 2] related_patent+20:[2013, 1, 29] term extension 0 days Case Text: This application is a divisional of co-pending application Ser. No. 10/372,212 filed on Feb. 25, 2003, which is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999, now U.S. Pat. No. 6,870,884 B1, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998, now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995, now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993, now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn. 120; and this application claims priority of Application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn. 119. | Mitsubishi |
7376184 | 04 nov 2002 | 20 May 2008 | 29 jan 1993 | 31 May 2014 | High-efficiency encoder and video information recording/reproducing apparatus | [59] file+20: [2022, 11, 4] related_patent+20:[2013, 1, 29] term extension 487 days Case Text: This application is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999 now U.S. Pat. No. 6,870,884, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998 now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995 now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993 now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn. 120; and this application claims priority of application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn. 119. | Mitsubishi |
7756202 | 30 oct 2007 | 13 jul 2010 | 29 jan 1993 | 06 aug 2013 | High-efficiency encoder and video information recording/reproducing apparatus | [60] file+20: [2027, 10, 30] related_patent+20:[2013, 1, 29] term extension 189 days Case Text: This application is a Continuation of application Ser. No. 11/276,501 filed on Mar. 2, 2006 now U.S. Pat. No. 7,362,805 which is a divisional of application Ser. No. 10/372,212 filed on Feb. 25, 2003 now U.S. Pat. No. 7,336,708, which is a divisional of application Ser. No. 09/271,458, filed on Mar. 18, 1999 now U.S. Pat. No. 6,870,884, which is a divisional of application Ser. No. 09/113,287, filed Jul. 10, 1998 now U.S. Pat. No. 5,909,252, which is a divisional of application Ser. No. 08/559,488, filed Nov. 15, 1995 now U.S. Pat. No. 5,841,474, which is a divisional of application Ser. No. 08/011,243, filed on Jan. 29, 1993 now U.S. Pat. No. 5,479,264, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. .sctn.120; and this application claims priority of Application No. 4-013719, 4-037599, 4-037821, and 4-043075 filed in Japan on Jan. 29, 1992; Feb. 25, 1992; Feb. 25, 1992 and Feb. 28, 1992 under 35 U.S.C. .sctn.119. | Mitsubishi |
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5027206 | 13 sep 1989 | 25 jun 1991 | 13 sep 1989 | 13 sep 2009 | High-definition television systems | [68] file+20: [2009, 9, 13] grant+17:[2008, 6, 25] | Philips |
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5333135 | 01 feb 1993 | 26 jul 1994 | 01 feb 1993 | 01 feb 2013 | Identification of a data stream transmitted as a sequence of packets | [71] file+20: [2013, 2, 1] grant+17:[2011, 7, 26] | Philips |
5606539 | 31 aug 1994 | 25 feb 1997 | 05 jun 1991 | 25 feb 2014 | Method and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus | [72] file+20: [2014, 8, 31] related_patent+20:[2011, 6, 5] grant+17:[2014, 2, 25] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of Application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of Application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. | Philips |
5608697 | 18 mar 1996 | 04 mar 1997 | 05 jun 1991 | 05 jun 2011 | Record carrier containing an audio and/or video signal which has been encoded and includes a decoder delay time parameter indicating a time delay for one or more portions of the signal | [73] file+20: [2016, 3, 18] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a division of application Ser. No. 08/299,027, filed on Aug. 31, 1994, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. | Philips |
5740310 | 28 jun 1994 | 14 apr 1998 | 32 May 1991 | 14 apr 2015 | Method of maintaining display continuity from a CD with slow-motion or freeze capability | [74] file+20: [2014, 6, 28] related_patent+20:[2011, 5, 32] grant+17:[2015, 4, 14] Case Text: This is a continuation of application Ser. No. 07/707,527, filed May 30, 1991, now abandoned. | Philips |
5844867 | 09 sep 1996 | 01 dec 1998 | 05 jun 1991 | 05 jun 2011 | Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier used therewith or produced therefrom | [75] file+20: [2016, 9, 9] related_patent+20:[2011, 6, 5] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation of application Ser. No. 08/299,027, filed on Aug. 31, 1994, now U.S. Pat. No. 5,606,539, which is a continuation of application Ser. No. 08/086,402, filed Jun. 30, 1993 and now abandoned, which was a continuation of application Ser. No. 07/711,186, filed Jun. 5, 1991 and now abandoned. | Philips |
5461421 | 29 nov 1993 | 24 oct 1995 | 29 nov 1993 | 29 nov 2013 | Encoding and decoding method and apparatus thereof | [76] file+20: [2013, 11, 29] grant+17:[2012, 10, 24] | Samsung |
5467086 | 18 jun 1993 | 14 nov 1995 | 18 jun 1993 | 18 jun 2013 | Apparatus and method of coding/decoding video data | [77] file+20: [2013, 6, 18] grant+17:[2012, 11, 14] | Samsung |
5654706 | 18 dec 1996 | 05 aug 1997 | 15 jul 1993 | 15 jul 2013 | System for variable length decoding digital transmission data which has been compressed by selecting a scanning pattern | [78] file+20: [2016, 12, 18] related_patent+20:[2013, 7, 15] Case Text: This is a continuation of application Ser. No. 08/532,987 filed Sep. 22, 1995, now U.S. Pat. No. 5,602,549 which is a Continuation Application of prior application Ser. No. 08/095,468, Jul. 15, 1993, now U.S. Pat. No. 5,497,153. | Samsung |
6680975 | 02 nov 2000 | 20 jan 2004 | 01 mar 1993 | 12 mar 2014 | Signal encoding and decoding system and method | [79] file+20: [2020, 11, 2] related_patent+20:[2013, 3, 1] term extension 376 days Case Text: This is a Continuation of application Ser. No. 08/024,305 filed Mar. 1, 1993 now U.S. Pat. No. 6,263,026, the disclosure of which is incorporated herein by reference. | Samsung |
7292657 | 03 jul 2003 | 06 nov 2007 | 01 mar 1993 | 01 mar 2013 | Signal compressing signal | [80] file+20: [2023, 7, 3] related_patent+20:[2013, 3, 1] Case Text: This is a Continuation of application Ser. No. 09/703,649 filed Nov. 2, 2000; now U.S. Pat. No. 6,680,975 which is a Continuation of application Ser. No. 08/024,305 filed Mar. 1, 1993; now U.S. Pat. No. 6,263,026 the disclosures of which are incorporated herein by reference. | Samsung |
7609760 | 05 jan 2009 | 27 oct 2009 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [81] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7616687 | 05 jan 2009 | 10 nov 2009 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [82] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7684490 | 18 dec 2008 | 23 mar 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [83] file+20: [2028, 12, 18] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. | Samsung |
7724821 | 24 dec 2008 | 25 May 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [84] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue Application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12,338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7724822 | 24 dec 2008 | 25 May 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [85] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation Application No. 12,338,647, filed Dec. 18, 2008 is a Continuation Application of 11/873,282, filed Oct. 16, 2007. | Samsung |
7724823 | 24 dec 2008 | 25 May 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [86] file+20: [2028, 12, 24] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12,338,647, filed Dec. 18, 2008 is a Continuation application Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7724824 | 05 jan 2009 | 25 May 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [87] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation applications of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7724828 | 16 nov 2009 | 25 May 2010 | 01 mar 1993 | 01 mar 2013 | Signal compressing system | [88] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation Application of Ser. No. 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, Continuation application Ser. Nos. 12/348,510, 12/348,535, 12/348,539, 12/348,581, 12/348,590, and 12/348,621, all filed on Jan. 5, 2009, and Continuation application Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation Applications of Ser. No. 11/873,282. | Samsung |
7724829 | 16 nov 2009 | 25 May 2010 | 01 mar 1993 | 01 mar 2013 | Signal compressing system | [89] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation application of 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008. Continuation application Ser. Nos. 12/348,510, 12/348,535, 12/348,539, 12/348,581, 12/348,590, and 12/348,621, all filed on Jan. 5, 2009, and Continuation application Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation applications of Ser. No. 11/873,282. | Samsung |
7742522 | 05 jan 2009 | 22 jun 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [90] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007, now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of 11/873,282, filed Oct. 16, 2007. | Samsung |
7742527 | 05 jan 2009 | 22 jun 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [91] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
7764735 | 02 jul 2009 | 27 jul 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [92] file+20: [2029, 7, 2] related_patent+20:[2021, 7, 17] Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 11/873,282 was filed on Oct. 16, 2007; Continuation application Ser. No. 12/338,647 was filed on Dec. 18, 2008; Continuation application Ser. Nos. 12/343,898, 12/343,797, and 12/343,839 were filed on Dec. 24, 2008; and Continuation application Ser. Nos. 12/348,590, 12/348,535, 12/343,539, 12/348,581, 12/348,621, 12/348,510 were filed on Jan. 5, 2009. | Samsung |
7782956 | 16 nov 2009 | 24 aug 2010 | 01 mar 1993 | 01 mar 2013 | Signal compressing system | [93] file+20: [2029, 11, 16] related_patent+20:[2013, 3, 1] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 12/574,255, filed Oct. 6, 2009, which is a Continuation Application of Ser. No. 12/348,621, filed Jan. 5, 2009, issued as U.S. Pat. No. 7,616,687 on Nov. 10, 2009, which is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation Application No. Ser. No. 12/338,647, filed Dec. 18, 2008, Continuation Application Nos. Ser. No. 12/343,797, Ser. No. 12/343,839, and Ser. No. 12/343,898, all filed on Dec. 24, 2008, Continuation Application Nos. Ser. No. 12/348,510, Ser. No. 12/348,535, Ser. No. 12/348,539, Ser. No. 12/348,581, Ser. No. 12/348,590, and Ser. No. 12/348,621, all filed on Jan. 5, 2009, and Continuation Application No. Ser. No. 12/497,264, filed on Jul. 2, 2009, are Continuation Applications of Ser. No. 11/873,282. | Samsung |
7787538 | 05 jan 2009 | 31 aug 2010 | 17 jul 2001 | 17 jul 2021 | Signal compressing system | [94] file+20: [2029, 1, 5] related_patent+20:[2021, 7, 17] term extension 0 days Case Text: CROSS-REFERENCES TO RELATED PATENT APPLICATIONS This is a Continuation Application of application Ser. No. 11/873,282, filed Oct. 16, 2007 now abandoned; which is a Continuation Application of application Ser. No. 10/612,013, filed Jul. 3, 2003, and issued on Nov. 6, 2007, as U.S. Pat. No. 7,292,657; which is a Continuation Application of application Ser. No. 09/703,649, filed Nov. 2, 2000, and issued Jan. 20, 2004, as U.S. Pat. No. 6,680,975; which is a Continuation Application of application Ser. No. 08/024,305, filed Mar. 1, 1993, and issued on Jul. 17, 2001, as U.S. Pat. No. 6,263,026; the disclosures of which are incorporated herein by reference. One (1) Reissue application Ser. No. 10/609,438, filed on Jul. 1, 2003, of U.S. Pat. No. 6,263,026 has been abandoned. Continuation application Ser. No. 12/338,647, filed Dec. 18, 2008 is a Continuation Application of Ser. No. 11/873,282, filed Oct. 16, 2007. Continuation application Ser. Nos. 12/343,797, 12/343,839, and 12/343,898, all filed on Dec. 24, 2008, are Continuation Applications of Ser. No. 11/873,282, filed Oct. 16, 2007. | Samsung |
5418782 | 06 jan 1994 | 23 May 1995 | 30 oct 1992 | 30 oct 2012 | Methods and apparatus for providing virtual service selection in a multi-service communications system | [95] file+20: [2014, 1, 6] related_patent+20:[2012, 10, 30] grant+17:[2012, 5, 23] Case Text: CROSS REFERENCE TO RELATED APPLICATIONS This is a continuation-in-part of U.S. patent application Ser. No. 08/027,782, filed Mar. 8, 1993, now U.S. Pat. No. 5,359,601 entitled "Apparatus Providing Dynamic Virtual Service Selection in a Multi-Service Communications System" and of U.S. patent application Ser. No. 07/968,846, filed Oct. 30, 1992, now U.S. Pat. No. 5,400,401 entitled "System and Method for Transmitting a Plurality of Digital Services", both of which are hereby incorporated by reference. | Scientific Atlanta |
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5544247 | 25 oct 1994 | 06 aug 1996 | 25 oct 1994 | 25 oct 2014 | Transmission and reception of a first and a second main signal component | [154] file+20: [2014, 10, 25] grant+17:[2013, 8, 6] | Audio MPEG, Inc |
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According to the MPEG-LA Licensing Agreement MPEG-LA, any use of MPEG-2 technology is subject to royalties.
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.
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