| Q1: |
What are the basic functions of Myson Century Scalers? |
| A1: |
(1) Adjustable vertical and horizontal zooming ratio.
(2). Driving the TFT LCD panel directly.
(3). Enhancing the auto detection on the A/D input source.
(4). Supporting video decoder input interface including de-interlace, YUV RGB transfer.
(5). OSD function support.
|
| Top |
| Q2: |
What is ˇ§dithering functionˇ¨? |
| A2: |
The dithering function is used to simulate the 8-bit source signal at 6-bit display device with very little color lost. It is useful because there is a variety of 6-bit display devices whereas the source is 8-bit. |
| Top |
| Q3: |
Why is the gamma function useful? |
| A3: |
The gamma function is used to modify the display device optical characteristics to meet the natural color characteristics. |
| Top |
| Q4: |
Why is the I2C bus sometimes unstable? |
| A4: |
Design a RC near scaler I2C pin with R =22~100 and C=10p~40p. |
| Top |
| Q5: |
What is the function of frame buffer? |
| A5: |
The frame buffer is used to the frame rate conversion for the vertical scan over 60Hz down to 60Hz. It also needs the SDRAM as the buffer. Some Scalers have the frame buffer function and other do not: the MTL003 has the frame buffer function, but the MTL002, MTL005 and MTL007 are designed without having the fame buffer function. |
| Top |
| Q6: |
What is Myson Century's Scaler operating range? |
| A6: |
The input of MTL002, MTL005 is from 13.5MHz up to 100MHz, and the output is from 640x480 VGA up to 1024x768 XGA. |
| Top |
| Q7: |
Which of Myson Century's Scaler can I choose if the input source is bigger than the panel resolution? |
| A7: |
If input source is bigger than panel resolution, the Scaler used must have the scale down function, and the MTL009 and MTL007 are the best choices. The MTL009, however, should be chosen base upon the panel. |
| Top |
| Q8: |
What is the phase calibration? |
| A8: |
Phase calibration is for auto phase, and the algorithm is sum of difference in one frame. The better phase the screen has, the larger the calibration, so the auto phase shall be used. |
| Top |
| Q9: |
There are two methods in dithering. What are the differences between them? |
| A9: |
Scalers support two dithering methods: one is static dithering, and the other is temporal dithering. Static dithering means that dithering coefficient is fixed, and is operated according the dithering table to do color dithering. Temporal dithering means that the dithering coefficient changes from time to time. |
| Top |
| Q10: |
If I have the panel and the corresponding panel specification, how do I set correct parameters using the panel and the panel specifications? |
| A10: |
The Scaler display must be consisted of panel display clock. H total and V total must be consisted of panel H and V display periods. Or, information such as whether the panel is single or dual input, 6-bit or 8-bit should be obtained from the panel specifications, then the parameters of the Scaler shall be determined. |
| Top |
| Q11: |
What are the differences between the MTL005, MTL007, MTL009 and MTL011? |
| A11: |
Refer to the following table for their differences:
| |
MTL005 |
MTL007 |
MTL009 |
MTL011 |
| Max Resolution |
XGA (1024x768) |
SXGA (1280x1024) |
XGA (1024x768) |
SXGA (1280x1024) |
| Timing Controller |
No |
No |
Yes |
Yes |
| Output Port |
Single/Dual |
Dual |
Dual |
Dual |
| Gamma Table |
8-bit |
8-bit/10-bit |
8-bit/10-bit |
8-bit/10-bit |
| Smooth |
No |
Yes |
Yes |
Yes |
| Scale Down |
No |
Yes |
Yes |
Yes |
|
| Top |
| Q12: |
How do I setup registers for a new panel? |
| A12: |
Example: 640x480 panel; display clock 29MHz
Set display clock reg E2h=16h, E3h=30h
Set reg E1h D0 load new m/n value;
Hsync start reg 74h =27h reg 75h =00h;
Hsync end reg 76h =A7h reg 77h =02h;
Vsync start reg 64h =27h reg 65h =00h;
Vsync end reg 66h =07h reg 67h =02h;
set reg A9h D0=high ,when D0 =low; and
read register ACh,ADh and write to reg 70h,71h.
|
| Top |
| Q13: |
What video formats do Myson Centuryˇ¦s Scaler support? |
| A13: |
601 for 16 Bit (PAL, NTSC)
656 for 8 Bit (PAL, NTSC)
For panels having vertical<576 (for PAL vertical line), the MTL005 is incapable of scaling down and displaying full screen.
|
| Top |
| Q14: |
Why is the I2C bus sometimes unstable? |
| A14: |
Design a RC near scaler I2C pin with R =22~100 and C=10p~40p. |
| Top |
