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- Q6805986 subject Q6420555.
- Q6805986 subject Q7013138.
- Q6805986 subject Q9711069.
- Q6805986 abstract "A media processor, mostly used as an image / video processor, is a microprocessor-based system-on-a-chip which is designed to deal with digital streaming data in real-time (e.g. display refresh) rates. These devices can also be considered a class of digital signal processors (DSPs).Unlike graphics processing units (GPUs), which are used for computer displays, media processors are targeted at digital televisions and set-top boxes.The streaming digital media classes include: uncompressed video compressed digital video - e.g. MPEG-1, MPEG-2, MPEG-4 digital audio- e.g. PCM, AACSuch SOCs are composed of: a microprocessor optimized to deal with these media datatypes a memory interface streaming media interfaces specialized functional units to help deal with the various digital media codecs The microprocessor might have these optimizations: vector processing or SIMD functional units to efficiently deal with these media datatypes DSP-like features Previous to media processors, these streaming media datatypes were processed using fixed-function, hardwired ASICs, which could not be updated in the field. This was a big disadvantage when any of the media standards were changed. Since media processors are software programmed devices, theprocessing done on them could be updated with new software releases. This allowed new generations of systems to be created without hardware redesign. For set-top boxes this even allows for the possibility of in-the-field upgrade by downloading of new software through cable or satellite networks. Companies that pioneered the idea of media processors (and created the marketing term of media processor) included: MicroUnity MediaProcessor - Cancelled in 1996 before introduction IBM Mfast - Described at the Microprocessor Forum in 1995, planned to ship in mid-1997 but was cancelled before introduction Equator Semiconductor BSP line - their processors are used in Hitachi televisions, company acquired by Pixelworks Chromatic Research MPact line - their products were used on some PC graphics cards in the mid-1990s, company acquired by ATI Technologies Philips TriMedia line - used in Philips, Dell, Sony, etc. consumer electronics, Philips Semiconductors split of from Philips and became NXP Semiconductors in 2006 Consumer electronics companies have successfully dominated this market by designing their own media processors and integrating them into their video products. Companies such as Philips, Samsung, Matsushita, Fujitsu, Mitsubishi have their own in-house media processor devices. Newer generations of such devices now use various forms of multiprocessing—multiple CPUs or DSPs, in order to deal with the vastly increased computational needs when dealing with high definition television signals.".
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- Q6805986 comment "A media processor, mostly used as an image / video processor, is a microprocessor-based system-on-a-chip which is designed to deal with digital streaming data in real-time (e.g. display refresh) rates.".
- Q6805986 label "Media processor".