September 03, 2009


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TE3610PF Dynamic Range Compression LSI in Mass Produced Production

- Algorithm mimics action of human retina to achieve realistic image reproduction under dim or backlit conditions -


Tokyo Electron Device Limited (Headquarters: Kanagawa-ku, Yokohama, President: Toshiaki Sunagawa) has commenced mass produced production of the TE3610PF LSI. The device is based on two image processing technologies developed by Apical Limited (Headquarters: London, United Kingdom, CEO:Dr. Michael Tusch): iridix®, which implements pixel-by-pixel dynamic range compression, and sinter®, which is an advanced noise reduction core. The dynamic range compression function can produce images with a most natural appearance similar to that seen by the human eye while the noise reduction function reduces sensor noise and improves the efficiency of compression techniques such as JPEG and MPEG.


The demand for high quality images in video equipment has strengthened in recent times. This desire for better image quality extends to security equipment such as surveillance cameras and vehicle-mounted cameras, and the ability to view scenes reliably even when reflections, dark regions, or other impediments are present is becoming increasingly important.


Apical's iridix image processing technology is a type of dynamic range compression that uses a "proprietary algorithm which mimics the action of the human retina". The method uses research into the human visual system (HVS) to model how the retina automatically adjusts the dynamic range of an image and works by adjusting the brightness of each pixel in realtime with reference to the local area within the frame. The technology can reproduce images in the most natural way regardless of the environment in which the image was captured. iridix is generally recognized to be very sophisticated technology of its kind so far developed.


The standard form of dynamic range adjustment uses gamma correction to apply non-linear gain to an image. Such global processing progressively reduces contrast as dynamic range of the scene increases, leading to substantial loss of information and frequently unacceptable images. When using iridix dynamic range compression, however, the optimum tone curve is determined individually for each pixel which allows the image to be reproduced in a way similar to that seen by the human observer. (See Figure 1-a, b, and c)


Information content and local contrast are always preserved under all conditions.


Because the TE3610PF uses “sinter” noise reduction technology in addition to iridix, it reduces sensor noise prior to image compression and improves the efficiency of JPEG and MPEG compression.


The TE3610PF connects to the final stage of the AFE (analog front end) (see Figure 2: Example application in a security camera) so as to apply correction to the RAW data which has the highest information content and achieve the maximum possible dynamic range compression benefits.


The new LSI is aimed primarily at use in digital cameras and in security equipment such as surveillance cameras and vehicle-mounted cameras. Sales will be aimed at Japan in particular as well as markets in China, Taiwan, and South Korea.


Figure 1-a: Image when iridix used to determine tone curve individually for each pixel


Figure 1-b: Image using standard technique with a single tone curve per frame


Figure 1-c: Image after processing by iridix (left) and standard technique (right)

The image on the left in Figure 1-c keeps the highlights intact whereas the image on the right suffers from regions of white-out. Also, the superior local contrast of the face on left results in a much more natural image.

Figure 2: Example application in a security camera


TE3610PF specifications
●Supports RAW data up to 12-bit (CYMG, RGB)
●Built-in RAW data noise reduction function
●Can perform pixel-by-pixel processing
(maximum supported resolution: 2032(H) x 2592(V))
●No external memory required
●80-pin QFP package

Please visit the following web site for more details.
(Including a video demonstrating the benefits of the TE3610PF.)

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The standard sales price is 500 yen (excluding tax, for purchases of 100,000 units)


About Tokyo Electron Device Limited
Tokyo Electron Device is a technical trading firm with a "trading business” function that provides semiconductor products and business solutions as well as a “development business” function that performs commissioned designing and the development of own-brand products.



About inrevium

Leveraging on rich design and development experiences accumulated at its design development center that was established in 1985, Tokyo Electron Device is focusing on development businesses through its “inrevium” brand to provide design services (commissioned designing services) based on customer requirements as well as self-developed products that anticipate future market needs. Currently, TED provides over 60 types of products and will continue to engage in the high value-added development businesses.

inrevium special site URL:


About Apical

Apical is the industry leader in advanced dynamic range management and noise reduction technology for embedded applications. The company’s products are derived from research into the human visual system and are designed to maximize the performance of a wide range of image capture and display devices. The product range comprises hardware IP cores and embedded software libraries. Apical is a privately held company based in the UK.
iridix and sinter are registered trademarks of Apical Limited




Media Contact:

Ryoko Kokubu,Yoko Fukui
Tokyo Electron Device Limited
Tel: +81-45-443-4005
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Product Contact:

Kazunori Abe
Tokyo Electron Device Limited
Tel: +81-45-443-4031
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