Search found 146 matches

by tom_van
Wed Jun 22, 2011 3:54 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

It's a shame Erdem. Lot of information here is valid for A series as well and your hardware going to be universal (at least I hope).
by tom_van
Sun Jun 19, 2011 6:22 pm
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

Thanks for explanation, sbav1 On hardware level, there are two lines in B650 (between main board and inverter / power supply board) for backlight control: PWM_DIMMING and ANA_DIMMING. But is Samsung using both of them? Not even to mention local dimming in some LCD sets (supposedly there is FPGA/CPLD...
by tom_van
Sun Jun 19, 2011 8:31 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

Good, sbav1 :idea: 2) 0x30220680: 0x100 for esaving == auto, 0x00 otherwise (from ChelseaPictureShare::m_SetDimmingReg()) Do you have an idea what does auto energy saving really mean? What input does it react on? Is it based on average picture brightness? And how does it differ from dynamic contrast...
by tom_van
Wed Jun 01, 2011 7:26 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

I use Eagle http://www.cadsoft.de/ on both Win/Linux.
by tom_van
Tue May 31, 2011 7:55 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

The code common for SH4 and ARM: SsPictureBase::SetBrightness(unsigned char) / SsPictureBase::SetContrast(unsigned char) in turn calls SsPictureBase::SetPictureModeData(SS_PictureModeItem_k, unsigned char *) This routine call low level setting and stores new value in SsStore I'm afraid that storing...
by tom_van
Fri May 20, 2011 5:28 pm
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

Good progress, Erdem! I think some stress testing of v-usb will be useful. Something like that: connect v-usb to a hub with a flash stick. Check if v-usb can communicate concurrently with playing high bit-rate video. I've made some changes to LExxA956 firmware. Be warned that it is not applicable on...
by tom_van
Thu May 19, 2011 1:20 pm
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

Shame about that Tom, I favour your simpler solution, especially if it can double up as RS232 level converter for debug. The only downside I see is having to set TV's serial to UART, and not debug, just in case of problems... Ex-link is already in RS232 levels, no need to convert voltages. UART sta...
by tom_van
Thu May 19, 2011 9:16 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

I personally dislike softUSB. It might or might not work depending of precision of Xtals. Xtal? What Xtall? Poormans doesn't have a Xtall. I am gonna use IntRC Osc with PLL :D You made me to recheck softusb code on the net and YES, V-USB really implements soft pll and intRC tuning (OMG :roll: ) Ok,...
by tom_van
Tue May 17, 2011 12:28 pm
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

If you look for any profi made boards with small ATmega (without light sensor etc...), you see prices around 20$. What boards? I will build from bare chips. Don't buy such a kit. :) I think even no PCB is required for 2 piece.Could solder chips with wire will do the job :) I mentioned it just for i...
by tom_van
Tue May 17, 2011 10:05 am
Forum: General
Topic: Brightness auto adjusting to ambient light level
Replies: 70
Views: 28241

Re: Brightness auto adjusting to ambient light level

Let's discuss how to connect ambient light sensor to the TV. 1) I2C sensor connected to internal I2C bus. This variant might be even cheaper than Erdem offered. Just a sensor and 3 wires. But it can easy turn into the most expensive if you damage your TV mainboard. This option is only for TV makers,...

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