[theora-dev] Interlaed video encoding.

Wed Aug 27 05:31:38 PDT 2003

The MPEG2 patent list is here: 
http://www.mpegla.com/mpeg2/m2_patentlist.html

The MPEG4 patent lists are here:
http://www.mpegla.com/mpeg4v/m4v_patentlist.html
http://www.mpegla.com/mpeg4s/m4s_patentlist.html
(these are not the complete patent lists for MPEG4, but only for the 
visual and systems sections)

The US MPEG2 patents that from a brief glance appears to relate to 
interlacing are:
RE35,093 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=RE35,093.WKU.&OS=PN/RE35,093&RS=PN/RE35,093
5,426,464 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,426,464.WKU.&OS=PN/5,426,464&RS=PN/5,426,464
5,491,516 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,491,516.WKU.&OS=PN/5,491,516&RS=PN/5,491,516
5,600,376 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,600,376.WKU.&OS=PN/5,600,376&RS=PN/5,600,376
5,093,720 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,093,720.WKU.&OS=PN/5,093,720&RS=PN/5,093,720
RE36,015 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=RE36,015.WKU.&OS=PN/RE36,015&RS=PN/RE36,015
RE36,507 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=RE36,507.WKU.&OS=PN/RE36,507&RS=PN/RE36,507
5,223,949 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,223,949.WKU.&OS=PN/5,223,949&RS=PN/5,223,949
5,784,107 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,784,107.WKU.&OS=PN/5,784,107&RS=PN/5,784,107
5,949,489 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,949,489.WKU.&OS=PN/5,949,489&RS=PN/5,949,489
5,963,258 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,963,258.WKU.&OS=PN/5,963,258&RS=PN/5,963,258
5,970,175 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,970,175.WKU.&OS=PN/5,970,175&RS=PN/5,970,175
5,990,960 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,990,960.WKU.&OS=PN/5,990,960&RS=PN/5,990,960
6,002,439 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,002,439.WKU.&OS=PN/6,002,439&RS=PN/6,002,439
6,097,759 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,097,759.WKU.&OS=PN/6,097,759&RS=PN/6,097,759
6,188,794 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,188,794.WKU.&OS=PN/6,188,794&RS=PN/6,188,794
6,307,973 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,307,973.WKU.&OS=PN/6,307,973&RS=PN/6,307,973
4,849,812 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=4,849,812.WKU.&OS=PN/4,849,812&RS=PN/4,849,812
5,461,421 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,461,421.WKU.&OS=PN/5,461,421&RS=PN/5,461,421
5,467,086 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,467,086.WKU.&OS=PN/5,467,086&RS=PN/5,467,086
5,343,248 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,343,248.WKU.&OS=PN/5,343,248&RS=PN/5,343,248
5,461,420 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,461,420.WKU.&OS=PN/5,461,420&RS=PN/5,461,420
5,539,466 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,539,466.WKU.&OS=PN/5,539,466&RS=PN/5,539,466
5,543,847 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,543,847.WKU.&OS=PN/5,543,847&RS=PN/5,543,847
5,666,461 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,666,461.WKU.&OS=PN/5,666,461&RS=PN/5,666,461
6,160,849 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,160,849.WKU.&OS=PN/6,160,849&RS=PN/6,160,849
5,422,676 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,422,676.WKU.&OS=PN/5,422,676&RS=PN/5,422,676
5,175,618 
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,175,618.WKU.&OS=PN/5,175,618&RS=PN/5,175,618

This list should in no way be considered complete, but from a practical 
standpoint the most likely people to pursue patent litigation would be 
the members of the MPEG consortium.

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