OSSC Pro: 960x540p@60hz on Sony HD CRTs working!

[spacetime66]

Update with working timings:

So far I’ve been able to 960x540p60hz working properly with 1 Sony Sony KV-34XBR910 (DVi and Component), 1 Sony KV-30HS420 (Component only) and 2 Sony KD-34XBR960 (Component only)

my setting to get 960x540p@60hz working via component on several Sony HD CRTs with OSSC Pro is as follows

In Nvidia Contol Panel

Display > Change Reslution > Output Color Format = RGB

Display > Change Reslution > Output Dynamic Range = Full

in CRU under windows I delete all Detailed,Standard, Established and TV Resolutions from EDID under windows

then under Detailed Resolutions I create a single new timing that goes as follows

Horizontal:

Active = 960

Front Porch = 68

Sync Width = 24

Back Porch = 164

Sync Polarity= –

Vertical:

Active = 540

Front Porch = 3

Sync Width = 5

Back Porch = 14

Sync Polarity= +
and then I restart the driver

and then here are the OSSC Pro Settings

AV4 Video In OPT > Default RGB Range = Full

Line Multiplier OPT> Line Multiplier Mode = Adaptive

Line Multiplier OPT> Adaptive LM OPT> 480p Proc = 720×480 (Passthrough)

Output OPT > Operation Mode = Line Multiplier

Output OPT >ADV DISP Timings = 480p

Horizontal:

H. Total = 1216

H. SyncLeg = 24

H. BackPorch = 164

H. Active = 960

Vertical:

V. Total = 562

V. SyncLeg = 5

V. BackPorch = 14

V Active = 540

Output OPT >ADV DISP Timings> Def RFR Rate = 60.00

Output OPT >ADV DISP Timings> Def RFR Rate Frac = 60.00

Output OPT >ADV DISP Timings>Display AR H = 16

Output OPT >ADV DISP Timings>Display AR V = 9

 

 

 

 

 

 

 

 

Orignal post with unoptimal timing with blown out brightness:

I was able to get 960x540p@60hz two of my Sony HD CRTs the first one that I tested was a Sony SFP KV-34XBR910 with a working HDPT circuit which I was able to get to work directly with the DVI input without the OSSC Pro with a DVI to HDMI cable straight to the TV in low lag HDPT mode using a laptop running windows 10 with an Nvidia GTX 1060 using CRU for forcing custom resolution under windows 10

The second TV I got working with 960x540p is a Sony Hi-Scan 30HS420 with a working HDPT circuit which I got working with the OSSC Pro in A-LM mode with custom Advanced Display timings in the output settings via Component via Extra AV with custom out in HDPT mode and custom resolution using CRU under windows 11 with a Nvidia GTX 1080 ti.

But there is a problem with the white levels being way too high with 960x540p@60hz with OSSC Pro via component on the Sony Hi-Scan 30HS420 that doesn’t happen with 1920x1080i or 1920x540p@60hz in A-LM mode via component… I’m not sure if it’s a bug with OSSC Pro or it just something TV does with 960x540p@60hz

If anyone could test their HD CRT with 960x540p@60hz via component with the Extra AV Out to see if the brightness is blown out or if they can confirm that it is a firmware bug by looking at the code

thanks in advance

my setting to get 960x540p@60hz working via component on the Sony Hi-Scan 30HS420 with OSSC Pro is as follows

In Nvidia Contol Panel

Display > Change Reslution > Output Color Format = RGB

Display > Change Reslution > Output Dynamic Range = Full

in CRU under windows I delete all Detailed,Standard, Established and TV Resolutions from EDID under windows

then under Detailed Resolutions I create a single new timing that goes as follows

Horizontal:

Active = 960

Front Porch = 32

Sync Width = 96

Back Porch = 128

Sync Polarity= –

Vertical:

Active = 540

Front Porch = 3

Sync Width = 5

Back Porch = 14

Sync Polarity= +
and then I restart the driver

and then here are the OSSC Pro Settings

AV4 Video In OPT > Default RGB Range = Full

Line Multiplier OPT> Line Multiplier Mode = Adaptive

Line Multiplier OPT> Adaptive LM OPT> 480p Proc = 720×480 (Passthrough)

Output OPT > Operation Mode = Line Multiplier

Output OPT >ADV DISP Timings = 480p

Horizontal:

H. Total = 1216

H. SyncLeg = 96

H. BackPorch = 128

H. Active = 960

Vertical:

V. Total = 562

V. SyncLeg = 5

V. BackPorch = 14

V Active = 540

Output OPT >ADV DISP Timings> Def RFR Rate = 60.00

Output OPT >ADV DISP Timings> Def RFR Rate Frac = 60.00

Output OPT >ADV DISP Timings>Display AR H = 16

Output OPT >ADV DISP Timings>Display AR V = 9

• This topic was modified 1 year ago by spacetime66.
• This topic was modified 1 year ago by spacetime66.
• This topic was modified 1 year ago by spacetime66.
• This topic was modified 3 months, 2 weeks ago by spacetime66.
• This topic was modified 3 months, 2 weeks ago by spacetime66.

[marqs]

Perhaps clamping circuit in the TV gets set to inoptimal position with 960x540p. Do you see the issue if you use horitontal timings from 1920x540p@60hz divided by 2?

[spacetime66]

So if I divide the timings by 2 for 1920x540p A-LM in the output advanced timing the brightness seems okay but the the image is stretched which I think is expected

the timing H timing dived by 2 is:

Horizontal:
H. Total = 1100
H. SyncLeg = 22
H. BackPorch = 74
H. Active = 960
but if I use the the timings I originally used in my first post with 1920x540p A-LM the brightness is blownout

the old timings

Horizontal:
H. Total = 1216
H. SyncLeg = 96
H. BackPorch = 128
H. Active = 960

[marqs]

Sounds like clamping on TV side is indeed the issue. You should adjust timings so that relative hsync length in your custom mode is same as in 1920x540p mode, i.e. (44/2200)*1216 = 24.

[spacetime66]

yeah that did the trick

[spacetime66]

So far I’ve been able to 960x540p60hz working properly with 1 Sony Sony KV-34XBR910 (DVi and Component), 1 Sony KV-30HS420 (Component only) and 2 Sony KD-34XBR960 (Component only)

Here is The timing Output OPT >ADV DISP Timings = 480p Timings for the OSSC Pro:

 

Horizontal:

H. Total = 1216

H. SyncLeg = 24

H. BackPorch = 164

H. Active = 960

Vertical:

V. Total = 562

V. SyncLeg = 5

V. BackPorch = 14

V Active = 540

Output OPT >ADV DISP Timings> Def RFR Rate = 60.00

Output OPT >ADV DISP Timings> Def RFR Rate Frac = 60.00

Output OPT >ADV DISP Timings>Display AR H = 16

Output OPT >ADV DISP Timings>Display AR V = 9

here are those timing for CRU for windows:

 

Horizontal:

Active = 960

Front Porch = 68

Sync Width = 24

Back Porch = 164

Blanking = 256

Total = 1216

Sync Polarity= –

Vertical:

Active = 540

Front Porch = 3

Sync Width = 5

Back Porch = 14

Blanking = 22

Total = 562

Sync Polarity= +

 

 

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