19th November 2008

Imagination announces latest POWERVR VXE video encoder IP cores


19 November 2008:
Imagination Technologies, a leader in system-on-chip Intellectual Property (SoC
IP), announced today the availability of two new IP cores in the POWERVR VXE
video encoder family. POWERVR VXE251 and VXE280 deliver multi-standard encode
at SD and HD resolutions respectively. Both cores are available for licensing
immediately.

POWERVR VXE encodes still
image and video sequences to a wide range of compression standards including
H.264, MPEG-4 & JPEG. These cores offload the entire video/still encode processing
to hardware. This minimises the host CPU processing requirements. Despite
having multi-standard capability, POWERVR VXE cores typically take up
comparable silicon area to single standard solutions.

This VXE family of
encoders is ideal for a wide range of consumer and embedded applications
including cameras, portable media players, video conferencing, surveillance,
personal navigation devices and mobile phones.

One of the unique
features of VXE280 is a scalable architecture that allows tuning the number of
pipelines to the process specific clock-speed for maximum system efficiency and
performance.

POWERVR VXE encoders
offer high quality encoding at low data rates, and low power, to enable efficient
encoding for the next generation of consumer devices. VXE280 delivers full HD
encoding capability that is increasingly demanded in many consumer applications.The provision of H.264 allows devices using POWERVR
VXE to typically offer at least a 5x improvement in recording times of HD
video, as compared to today’s devices which use the less efficient M-JPEG
algorithm.

The cores encode video and stills from raw
image data, producing a compliant bit stream at the elementary stream or NAL
unit level; generate stream headers; and perform algorithmic functions such as
entropy encoding, scan, transform, motion estimation and compensation, and
deblocking.

The cores’ multi-standard support has been
tested with a wide range of raw image data to ensure high compression ratios
without reduced visual quality. Supported standards include: H.264 BP@L4.1; MPEG-4
SP@L5.0; H.263 P0@L50; M-JPEG Baseline Profile 4:2:2 & 4:2:0; and JPEG
Baseline Profile 4:2:2 & 4:2:0.

Advanced design techniques enable the cores
to encode full frame rate standard definition whilst keeping clock speeds low:
encoding of H.264 BP@L3.0, SD at 30 fps requires just 75MHz, or 150MHz for
H.264 BP@L4.1, HD at 30 fps.

POWERVR VXE video encoders contain a powerful
real time stream manager, based on Imagination’s META MTX 32-bit embedded
processor IP core, which performs all header encoding including rate control as
well as overall core management functions. The VXE cores’ comprehensive and
flexible rate control algorithms include constant and variable bit rate control
to match the requirements of the end application. The unique architecture of
VXE cores enables future rate control requirements to be met using existing
hardware, without the need for new silicon.

Advanced automatic hardware power management
techniques including block and register level clock gating ensure that the
minimum amount of logic is powered for each video standard. This ensures that
the cores have frugal power requirements enabling high performance, real-time
video encode to be brought to power constrained devices such as portable media
players and mobile phones.

POWERVR VXE cores meet the video requirements
of a range of interoperability standards such as 3GPP and 3GPP2, and provide
full encoding to JFIF1.1 for use in a wide range of mobile applications.

About Imagination Technologies
Imagination Technologies Group plc (FTSE:IMG) a leader in semiconductor System on
Chip Intellectual Property (SoC IP) creates and licenses
market-leading embedded graphics,
video and display accelerators, multi-threaded processors and multi-standard
receiver technologies. These IP solutions are complemented by dynamic
and extensive developer and middleware ecosystems. Target markets
include digital radio and audio; mobile phone multimedia; personal media
players (PMP); in-car navigation and driver information; personal
navigation devices (PND); Ultra Mobile PC (UMPC) and Mobile
Internet Device (MID); digital TV & set-top box; and mobile TV. Its licensees include
leading semiconductor and consumer electronics companies, as well as innovative
leading edge start-up and fabless semiconductor companies. Imagination has
corporate headquarters in the United Kingdom, with sales and R&D offices
worldwide. See: www.imgtec.com.

Press Contact
David Harold
Imagination Technologies
tel +44 (0)1923 260 511
fax +44 (0)1923 270 188
e-mail: david.harold@imgtec.com
Imagination House
Home Park Estate
Kings Langley
Herts WD4 8LZ


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