Intelligent Display Buffer with DSI Interface

Transcription

1 Intelligent Display Buffer with DSI Interface Hiroshi Matsunaga Renesas Electronics Corporation Member-to-Member Presentations March 9,

2 Legal Disclaimer The material contained herein is not a license, either expressly or impliedly, to any IPR owned or controlled by any of the authors or developers of this material or MIPI. The material contained herein is provided on an AS IS basis and to the maximum extent permitted by applicable law, this material is provided AS IS AND WITH ALL FAULTS, and the authors and developers of this material and MIPI hereby disclaim all other warranties and conditions, either express, implied or statutory, including, but not limited to, any (if any) implied warranties, duties or conditions of merchantability, of fitness for a particular purpose, of accuracy or completeness of responses, of results, of workmanlike effort, of lack of viruses, and of lack of negligence. ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT, QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT WITH REGARD TO THIS MATERIAL. All materials contained herein are protected by copyright laws, and may not be reproduced, republished, distributed, transmitted, displayed, broadcast or otherwise exploited in any manner without the express prior written permission of MIPI Alliance. MIPI, MIPI Alliance and the dotted rainbow arch and all related trademarks, tradenames, and other intellectual property are the exclusive property of MIPI Alliance and cannot be used without its express prior written permission. IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THIS MATERIAL OR MIPI BE LIABLE TO ANY OTHER PARTY FOR THE COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT, INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY, OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT RELATING TO THIS MATERIAL, WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. 2

3 Table of Contents Concept of Intelligent Buffer IC (ibic) Tremolo Low power solution UNH-IOL MIPI Interoperability Tremolo Product 3

4 Concept of Intelligent Mobile Display Realize higher display quality & lower power for any mobile platform Intelligent display reduces traffic, and saves power in the system Mobile Main System Platform Intelligent Mobile Display Renesas Intelligent Buffer IC Intelligent Display Controller Display Buffering Less Traffic Back light Control Intelligent Function Longer battery life by saving power Less load and easy access to display Higher resolution & Quality Lower power Display Intelligent Display functions 4

5 What s Tremolo Solution Total Solution for intelligent display with image quality & lower power DRAM DBB Appli Chip Power save Buffer IC e-dram Active A B A A Back Light Control Flexible Mobile I/F (MDDI,MIPI) Rotation, Flip, etc.. Double Buffering. Window Access (PIP) Super Resolution 3D Display & AMOLED 5

6 Display Power saving in still Image mode Tremolo supports both Command mode and Video mode. Still Image on Display Power save Active - No operation by DBB/Appli chip at power saving DRAM Tremolo - Tremolo keeps still image for display for lower power DBB Appli Chip Buffer IC e-dram Display Frame Rate Control - Display frame rate can be changed from 30fps to 60 fps DBB Appli Chip Tremolo Active 30fps 30fps Buffer IC e-dram 60fps 60fps 6

7 Total Power Saving Concept 1 No Backlight Control 2 Still Image w/o Frame Buffer With Tremolo 1 AGCPS for Power saving 2 Still Image w/ Frame Buffer CPU+BB 1.2W 33% System Power 2.4W 67% 2 Still Image w/ Frame Buffer CPU 0.2W System Power LCD Panel (LCD + Backlight) 1.45W 39% LCD Panel (LCD + Backlight) Tablet 1366x AGCPS for Power Saving 7

8 Content-based Backlight Power Saving Back Light Control (AGCPS=Auto Gamma Control and Power Saving) Backlight current ma ma Backlight (LED) Backlight (LED) Driver IC Image Data DBB/ Appli CPU LED Driver IC Driver IC adjust Data Tremolo (AGCPS-II) Image Data LED Driver IC Contribute Longer battery life! DBB/ Appli CPU 8

9 Ambient Light-based Backlight Power Saving Auto control for ambient light level (Backlight, Gamma, Contrast) Ambient Light Sensor+CPU Get Level of Ambient light Back light control Backlight Gamma Contrast Down backlight for low power Low Power Tremolo AGCPS-II Backlight RGB Independent Gamma control Picture Quality Control Backlight Control Backlight Clear picture even Strong light from outside Backlight Picture Quality Gamma + Contrast Auto Control 9

10 Image Content-Based Backlight Control WVGA LCD Panel OFF : AGCPS OFF ON : AGCPS ON 800 P ow er consum ption com parison B ac kligh t L C D pan e l+ drive r IC Power [m W ] % % % % % Source Image O F F O N O F F O N O F F O N O F F O N O F F O N < M e asu re m e n t C o n ditio n > L C D P an e l:4.1 in c h W V G A (2 6 0 k c o lo r) F ram e rate :6 0 H z V o ltage fo r L C D :3.0 V,V o ltage fo r L E D :1 9.2 V (6 pc s x2 ) 10

11 Image Content-Based Backlight Control WVGA LCD Panel <Measurement Condition> LCD Panel : WVGA (800x480) Frame rate : 30Hz Voltage for LCD : 3.2V, Voltage for LED : 19V(Series connection) W V G A LC D Power consumption comparison ON : AGCPS ON OFF : AGCPS OFF OFF : AGCPS OFF ON : AGCPS ON 800 Pow er[m W ] % % -32% % % LC D -D R IV ER B acklight O FF O N O FF O N O FF O N O FF O N O FF O N Dark A verage B rightness Bright Source Image 11

12 UNH-IOL MIPI interoperability MIPI Product Integrators List Display Panels/Peripherals Company Product Device Type Test Selection Feature Description Date Listed Test ID Data Sheet Contact Info Renesas Electronics Tremolo-S µpd60800 DSI to RGB Bridge With Frame Buffer DISPLAY INTEROP WORKSHOP 2 Data Lanes 1024x600 12/13/2010 Further Info Juergen.Moeschen@renesas.com, ryuichi.hashishita.xr@renesas.com, greg.kasprzak@renesas.com Renesas Electronics Tremolo-M µpd60801 DSI to RGB Bridge with Frame Buffer DISPLAY INTEROP WORKSHOP 2 Data Lanes 1280x768 01/04/2011 Further Info Juergen.Moeschen@renesas.com, ryuichi.hashishita.xr@renesas.com, greg.kasprzak@renesas.com Further info: 12

13 MIPI Interoperability Test Results Host Device I/F Device Results Company A MIPI DSI Tremolo-S PASS Company B Product 1 Product 2 MIPI DSI Tremolo-S Tremolo-M PASS Company C MIPI DSI Tremolo-S Tremolo-M PASS Company D MIPI DSI Tremolo-M PASS Company E MIPI DSI Tremolo-S Tremolo-M PASS Renesas SH-Mobile MIPI DSI Tremolo-M PASS 13

14 Tremolo Product Series Roadmap CY2009 CY2010 CY2011 CY2012 (ES) MIPI DSI-RX Q3 Tremolo-S Large Frame Buffer Tremolo-S WSVGA/qHD (VGA x 2 buffer) Intelligent func. Q1 Tremolo-M AGCPS-II Display Ctrl & Power saving Dual input IF Tremolo-M WXGA ( qhdx 2 buffer) Intelligent func. Display Cont. planning Pixel-data Codec Large Display Tremolo-2 Data Compress WXGA+ Intelligent func. High resolution Touch panel Cont. Tremolo-Next Data Compress HD1080 Sensor Control Intelligent func. MIPI-DSI RGB MIPI-DSI MDDI RGB Enhanced Display MIPI-DSI MIPI-DSI LVDS Enhanced Display MIPI-DSI LVDS edp MIPI-DSI LVDS/ minilvds 14

15 Tremolo-M (upd60801) Feature Resolution: WXGA (Single buffer), up to WSVGA/qHD (Double buffer) Frame Buffer: 30Mb edram (14.9Mb x2 e-dram configuration) Input Interface: MIPI DSI 2 data lane MDDI type 1 Output Interface MIPI DPI (RGB 24bit Interface) Input Clock: kHz or 19.2MHz or 26MHz (selectable) AGCPS (Auto Gamma Control & Power Saving) for power saving of LCD backlight Rotate, Flip, Upside-down image, Window Access available Tearing Effect pin to control host so as to handle a potential display tearing effect PKG: 144 pin CSP, 5.5mm x 5.5mm, 0.4mm BGA pitch Schedule Sample: Now Production: Now 30Mb Frame Buffer ( WXGA ) MIPI-DSI RGB MDDI Renesas Electronics America Inc. COMPANY CONFIDENTIAL. All rights reserved. 15

16 Tremolo-M Block Diagram 1.8V 1.8V SEL_IF D0P D0N D1P D1N CLP CLN DD0P DD0N DD1P DD1N STP STN CLKIN /RESET SLEEP TE MIPI DSI Rx MDDI Client PLL system clk pixel clk Engine IF GB Reg Frame Buffer 14.8Mb edram Frame Buffer 14.8Mb edram Memory Control Engine Control Timing Control Voltage Regulator 1.2V AGCPS DBI TypeC IF PWM (BL LED CTL) MIPI-DPI (24bit RGB) VSYNC. HSYNC PCLK DE DBI TypeC AGCPS: Auto Gamma Control and Power Saving, which includes both CABC (Content Adaptive Backlight Control) and Ambient-light based Backlight Control Renesas Electronics America Inc. COMPANY CONFIDENTIAL. All rights reserved. 16

17 Tremolo-M Demo-Kit Tremolo-M RGB DSI bridge AGCPS-II Content Base BL Power saving AGCPS-II Contrast increase under strong light Basic Function: Frame Buffer, PiP, Rotation, Double Buffer 17

18 Thank you! 18