MPEG-2

Note: I am far from a patent lawyer...

As of their January 1, 2020 Posting, these are the current patents the MPEGLA patent pool believe\'s are valid.

MY 128994 (possible expiration of 30 Mar 2022)

MY 141626-A (possible expiration of 31 May 2025)

MY-163465-A (possible expiration of 15 Sep 2032)

I\'ve tried sending complaints to the Malaysia Patent office, but don\'t believe anything will happen unless someone sues in court.

Does this still impact anyone? Yes for instance Rapsberry Pis before 4 are still not going to try let MPEG-2 be free until all countries are there. (MPEG-2 hardware support has been removed from Pi 4s)

MY-163465-A

Title: SYNCHRONIZATION ARRANGEMENT FOR A COMPRESSED VIDEO SIGNAL
Client Reference: 13876MY4/PM/ANA/HJJ
Received Date: 04 Nov 2015
Application Number: PI 2015002705
Grant Date: 15 Sep 2017
OPI Date: 13 Nov 1994
Filing Date: 24 Apr 1994
Expiration Date: 15 Sep 2032
Renewal Due Date: Please be aware to renew your patent before this date is reached, or else your patent will become expired. 14 Sep 2020
Agent: PATRICK MIRANDAH
Applicant / Owner: GE TECHNOLOGY DEVELOPMENT, INC., ONE INDEPENDENCE WAY (US)
Inventors: JOEL WALTER ZDEPSKI
International Patent Classification: C09C 1/00 Treatment of specific inorganic materials other than fibrous fillers Preparation of carbon black 2006.01 11 Dec 2015 H03M 7/30 . Compression Expansion Suppression of unnecessary data, e.g. redundancy reduction 2006.01 11 Dec 2015
Priority: UNITED STATES OF AMERICA (US) 13 May 1993 060,924
Abstract: Apparatus for developing synchronization of an intermediate layer of signal such as the transport or multiplex layer of a multi-layered compressed video signal, includes at the encoding end of the system apparatus (13,23,25) for including a time stamp reference, such as a count value from a modulo K counter (23), and provision for a differential time stamp related to time stamps of a further compressed signal or differential transit times of respective transport packets. Flags are included in transport packets of signal to indicate the presence or absence of the time stamps or differential time stamps. At the receiving end of the system, circuitry examines respective packets for the condition of the flags to locate specific information such as the time stamps and differential time stamps. A counter (27) is responsive to a controlled receiver clock signal and the count value of this counter is sampled at the arrival of transport packets including a flag indicating the presence of a time stamp. Circuitry is described for using the time stamps and the sampled count values of the receiver counter (36) to provide a signal for controlling the frequency of the receiver clock signal.
Number of Claims: 16
Number of pages of claims: 16
Number of pages of drawing: 8
Number of pages of full specification: 24

MY-141626-A

Title: SYNCHRONIZATION ARRANGEMENT FOR A COMPRESSED VIDEO SIGNAL
Client Reference: RP-010050
Received Date: 18 Oct 2006
Application Number: PI 20064345
Grant Date: 31 May 2010
OPI Date: 13 Nov 1994
Filing Date: 27 Apr 1994
Expiration Date: 31 May 2025
Renewal Due Date: Please be aware to renew your patent before this date is reached, or else your patent will become expired. 30 May 2020
Agent: PATRICK MIRANDAH
Applicant / Owner: GE TECHNOLOGY DEVELOPMENT, INC., ONE INDEPENDENCE WAY (US)
Inventors: JOEL WALTER ZDEPSKI
International Patent Classification: H04N 7/56 . . . . Synchronising systems therefor 2006.01 30 Apr 2010
Priority: UNITED STATES OF AMERICA (US) 13 May 1993 060,924
Abstract: APPARATUS FOR DEVELOPING SYNCHRONIZATION OF AN INTERMEDIATE LAYER OF SIGNAL SUCH AS THE TRANSPORT OR MULTIPLEX LAYER OF A MULTI-LAYERED COMPRESSED VIDEO SIGNAL, INCLUDES AT THE ENCODING END OF THE SYSTEM APPARATUS (13, 23, 25) FOR INCLUDING A TIME STAMP REFERENCE, SUCH AS A COUNT VALUE FROM A MODULO K COUNTER (23), AND PROVISION FOR A DIFFERENTIAL TIME STAMP RELATED TO TIME STAMPS OF A FURTHER COMPRESSED SIGNAL OR DIFFERENTIAL TRANSIT TIMES OF RESPECTIVE TRANSPORT PACKETS. FLAGS ARE INCLUDED IN TRANSPORT PACKETS OF SIGNAL TO INDICATE THE PRESENCE OR ABSENCE OF THE TIME STAMPS OR DIFFERENTIAL TIME STAMPS. AT THE RECEIVING END OF THE SYSTEM, CIRCUITRY EXAMINES RESPECTIVE PACKETS FOR THE CONDITION OF THE FLAGS TO LOCATE SPECIFIC INFORMATION SUCH AS THE TIME STAMPS AND DIFFERENTIAL TIME STAMPS. A COUNTER (27) IS RESPONSIVE TO A CONTROLLED RECEIVER CLOCK SIGNAL AND THE COUNT VALUE OF THIS COUNTER IS SAMPLED AT THE ARRIVAL OF TRANSPORT PACKETS INCLUDING A FLAG INDICATING THE PRESENCE OF A TIME STAMP. CIRCUITRY IS DESCRIBED FOR USING THE TIME STAMPS AND THE SAMPLED COUNT VALUES OF THE RECEIVER COUNTER (36) TO PROVIDE A SIGNAL FOR CONTROLLING THE FREQUENCY OF THE RECEIVER CLOCK SIGNAL.FIGURE 3
Number of Claims: 4
Number of pages of claims: 4
Number of pages of drawing: 5
Number of pages of full specification: 9

MY-128994-A

Title: APPARATUS FOR FORMATTING A DIGITAL SIGNAL TO INCLUDE MULTIPLE TIME STAMPS FOR SYSTEM SYNCHRONIZATION
Client Reference: PMC/JKS/192SG1284
Received Date: 17 May 2001
Application Number: PI 20012336
Grant Date: 30 Mar 2007
OPI Date: 13 Nov 1994
Filing Date: 27 Apr 1994
Expiration Date: 30 Mar 2022
Renewal Due Date: Please be aware to renew your patent before this date is reached, or else your patent will become expired. 29 Mar 2020
Agent: PATRICK MIRANDAH
Applicant / Owner: GE TECHNOLOGY DEVELOPMENT, INC., ONE INDEPENDENCE WAY (US)
Inventors: JOEL WALTER ZDEPSKI
International Patent Classification: H04N 7/13 . Systems for the transmission of television signals using pulse code modulation [3,4]# 5 27 Apr 1994
Priority: UNITED STATES OF AMERICA (US) 13 May 1993 060,924
Abstract: APPARATUS FOR DEVELOPING SYNCHRONIZATION OF AN INTERMEDIATE LAYER OF SIGNAL SUCH AS THE TRANSPORT OR MULTIPLEX LAYER OF A MULTI-LAYERED COMPRESSED VIDEO SIGNAL, INCLUDES AT THE ENCODING END OF THE SYSTEM APPARATUS (13, 23, 25) FOR INCLUDING A TIME STAMP REFERENCE, SUCH AS A COUNT VALUE FROM A MODULO K COUNTER (23), AND PROVISION FOR A DIFFERENTIAL TIME STAMP RELATED TO TIME STAMPS OF A FURTHER COMPRESSED SIGNAL OR DIFFERENTIAL TRANSIT TIMES OF RESPECTIVE TRANSPORT PACKETS. FLAGS ARE INCLUDED IN TRANSPORT PACKETS OF SIGNAL TO INDICATE THE PRESENCE OR ABSENCE OF THE TIME STAMPS OR DIFFERENTIAL TIME STAMPS. AT THE RECEIVING END OF THE SYSTEM, CIRCUITRY EXAMINES RESPECTIVE PACKETS FOR THE CONDITION OF THE FLAGS TO LOCATE SPECIFIC INFORMATION SUCH AS THE TIME STAMPS AND DIFFERENTIAL TIME STAMPS. A COUNTER (27) IS RESPONSIVE TO A CONTROLLED RECEIVER CLOCK SIGNAL AND THE COUNT VALUE OF THIS COUNTER IS SAMPLED AT THE ARRIVAL OF TRANSPORT PACKETS INCLUDING A FLAG INDICATING THE PRESENCE OF A TIME STAMP. CIRCUITRY IS DESCRIBED FOR USING THE TIME STAMPS AND THE SAMPLED COUNT VALUES OF THE RECEIVER COUNTER (36) TO PROVIDE A SIGNAL FOR CONTROLLING THE FREQUENCY OF THE RECEIVER CLOCK SIGNAL.(FIG 3)
Number of Claims: 2
Number of pages of claims: 2
Number of pages of drawing: 5
Number of pages of full specification: 7

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2018-02-14 - Last US patent expired (Slashdot post)