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Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats. For example, x264 is a widely used open source implementation of the heavily patent encumbered MPEG-4 AVC video compression standard.
The economic effects of intellectual property reform in India is a complex subject area, and would require a separate detailed article. A beginning may be made by referring to Sunil Kanwar and Stefan Sperlich (2020), [18] who study the effect of intellectual property reform on technological advancement and productivity increases in manufacturing industry in the emerging market context of India.
Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
The Cowon Q7 Plenue is an electronic tablet and dictionary and runs on the Android operating system (Android OS). The Android OS allows for the device to use a variety of applications, including dictionaries, video apps, and the ability to listen to music. [10] The design of the Cowon Q7 Plenue has rounded edges and a curved backside. [10]
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Patents for anything disclosed in ISO CD 11172 filed a year or more after its publication are questionable. If only the known MP3 patents filed by December 1992 are considered, then MP3 decoding has been patent-free in the US since 22 September 2015, when U.S. patent 5,812,672, which had a PCT filing in October 1992, expired.