World's first MDDI-compliant LCD controller optimized for cell phones

February 13, 2006
World's first MDDI-compliant LCD controller optimized for cell phones

Toshiba Corporation announced the introduction of the world's first MDDI-compliant LCD controller optimized for cell phones equipped with high-resolution VGA LCD displays. Dubbed the MDDI LCD Bridge and designated TC358720XBG, the highly integrated, single-chip device is well suited for the new generation of advanced multimedia cell phones with MDDI interfaces, including 3G cellular handsets.

It has a high-speed serial digital packet host interface that supports throughputs of up to 400Mbps by using two low-voltage differential signal pairs. Toshiba will start sample shipments in April 2006. The company will display the device at the 2006 3GSM World Congress being held in Barcelona, Spain from February 13-16, 2006.

Toshiba's industry leading development of the MDDI LCD Bridge demonstrates the company's commitment to customers building the next generation of high-resolution, dual-LCD-panel cell phones with MDDI interface requirements. It supports two color LCD panels from a single controller, uses Toshiba's patented "magic square algorithm" technology to achieve a 16-million color display, and employs embedded DRAM to enable a low-power solution and mitigate the load on the baseband.

The MDDI LCD Bridge takes cell phone display resolution to the level of high-definition with support for VGA and W-QVGA LCDs. It optimizes low-power data transfers within cell phones, including video data transfers, through direct connection to the MDDI interface of QUALCOMM's Mobile Station ModemTM (MSMTM) baseband LSI. Its design also integrates 8-megabits of embedded DRAM to improve color image quality.

Equipped with an RGB interface plus an MPU interface, the device can control both a primary panel and a secondary panel. The image data needed to display images on two panels is stored in the embedded DRAM and only the updated parts of the display data need to be transferred from the baseband. When displaying still images, data need not be transferred from the baseband and this advance reduces the power consumption of the entire cell phone. The moving-image display function is supported on both the primary and secondary panels, and provides a mechanism for transferring image data to match the LCD display refresh timing. With the primary panel, it is possible to display VGA-size moving images and update only the locations displaying QVGA-size moving images, such as terrestrial digital broadcasts. This simplifies and reduces power consumption from baseband processing.

With the Toshiba "magic square algorithm", an RGB666 18-bit LCD panel can produce a display equivalent to that of an RGB888 24-bit LCD panel with up to 16-million colors. In addition, the algorithm enables display of 8-bit gray scale images even if the LCD panel only has a 6-bit gray scale capacity. The chip has independent 8-bit lookup table format gamma correction circuits for each color. The lookup table format converts 8-bit input into 8-bit output. This function permits fine adjustments to the brightness, even in LCD panels with a limited range of tones.

Explore further: LG Display moves advanced touch tech up to notebooks

Related Stories

LG Display moves advanced touch tech up to notebooks

July 6, 2015

LG Display has news for people who are into working with notebook PCs. They have announced lighter and slimmer LCD panels. Unleashing "Advanced In-cell Touch" (AIT) technology, LG Display said on Monday that they will start ...

Quantum dot TVs are unveiled at China tech expo

April 18, 2015

At this month's China Information Technology Expo (CITE) event, a headline-maker was the launch of quantum dot televisions, by QD Vision and Konka, the consumer electronics company. QD Vision's calling card in this instance ...

LG Display takes high jump in panel for phones

April 4, 2015

Quad High-Definition. That's a phrase you're likely to see more and more of this year, as Seoul, Korea-based LG Display announced Friday it is launching a 5.5-inch QHD LCD panel for smartphones. So what? This launch, said ...

Recommended for you

How bees naturally vaccinate their babies

July 31, 2015

When it comes to vaccinating their babies, bees don't have a choice—they naturally immunize their offspring against specific diseases found in their environments. And now for the first time, scientists have discovered how ...

Earth flyby of 'space peanut' captured in new video

July 31, 2015

NASA scientists have used two giant, Earth-based radio telescopes to bounce radar signals off a passing asteroid and produce images of the peanut-shaped body as it approached close to Earth this past weekend.

Image: Hubble sees a dying star's final moments

July 31, 2015

A dying star's final moments are captured in this image from the NASA/ESA Hubble Space Telescope. The death throes of this star may only last mere moments on a cosmological timescale, but this star's demise is still quite ...

Exoplanets 20/20: Looking back to the future

July 31, 2015

Geoff Marcy remembers the hair standing up on the back of his neck. Paul Butler remembers being dead tired. The two men had just made history: the first confirmation of a planet orbiting another star.

New blow for 'supersymmetry' physics theory

July 27, 2015

In a new blow for the futuristic "supersymmetry" theory of the universe's basic anatomy, experts reported fresh evidence Monday of subatomic activity consistent with the mainstream Standard Model of particle physics.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.