iXBT Labs - Computer Hardware in Detail






Latest News

 « Previous Day News Archive  

Toshiba Releases MDDI-Based VGA LCD Controller For 3G Handsets

Toshiba today announced the introduction of the 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 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.

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 Modem 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.

The Mobile Display Digital Interface (MDDI) itself is a serial interface standard approved by the Video Electronics Standards Association (VESA). It provides an interconnect solution between the upper and lower clamshell in a flip phone, decreasing the number of signals that connect the digital base band controller with the LCD display and camera. MDDI is a high-speed solution that supports variable data rates and low-power consumption.

Samples shipments are scheduled to begin in April 2006 with volume production planned to start in June 2006. Pricing is ¥900 each in 10,000-piece quantities.

Source: Toshiba

 « Previous Day News Archive  

Latest headlines

ASUS Launches R9 200, R7 200 Series, Matrix R9 280X Graphics Cards

Apacer Launches SATA SLC-lite SSD solutions

ADATA Introduces a Stylish External HDD HC630

Samsung Introduces New Wireless Multiroom Speakers

WD Gives Consumers a Cloud of Their Own

Write a comment below. No registration needed!

blog comments powered by Disqus

  Most Popular Reviews More    RSS  

AMD Phenom II X4 955, Phenom II X4 960T, Phenom II X6 1075T, and Intel Pentium G2120, Core i3-3220, Core i5-3330 Processors

Comparing old, cheap solutions from AMD with new, budget offerings from Intel.
February 1, 2013 · Processor Roundups

Inno3D GeForce GTX 670 iChill, Inno3D GeForce GTX 660 Ti Graphics Cards

A couple of mid-range adapters with original cooling systems.
January 30, 2013 · Video cards: NVIDIA GPUs

Creative Sound Blaster X-Fi Surround 5.1

An external X-Fi solution in tests.
September 9, 2008 · Sound Cards

AMD FX-8350 Processor

The first worthwhile Piledriver CPU.
September 11, 2012 · Processors: AMD

Consumed Power, Energy Consumption: Ivy Bridge vs. Sandy Bridge

Trying out the new method.
September 18, 2012 · Processors: Intel
  Latest Reviews More    RSS  

i3DSpeed, September 2013

Retested all graphics cards with the new drivers.
Oct 18, 2013 · 3Digests

i3DSpeed, August 2013

Added new benchmarks: BioShock Infinite and Metro: Last Light.
Sep 06, 2013 · 3Digests

i3DSpeed, July 2013

Added the test results of NVIDIA GeForce GTX 760 and AMD Radeon HD 7730.
Aug 05, 2013 · 3Digests

Gainward GeForce GTX 650 Ti BOOST 2GB Golden Sample Graphics Card

An excellent hybrid of GeForce GTX 650 Ti and GeForce GTX 660.
Jun 24, 2013 · Video cards: NVIDIA GPUs

i3DSpeed, May 2013

Added the test results of NVIDIA GeForce GTX 770/780.
Jun 03, 2013 · 3Digests
  Latest News More    RSS  

Platform  ·  Video  ·  Multimedia  ·  Mobile  ·  Other  ||  About us & Privacy policy  ·  Twitter  ·  Facebook

Copyright © Byrds Research & Publishing, Ltd., 1997–2011. All rights reserved.