Niles IR router with a Sony Bravia LCD
 

I have a new Sony Bravia LCD TV. I also bought a Niles IR router so I can
keep my cable box out of site. My problem is that the IR sensor is always
receiving a signal. It took us a while but determined this IR is coming
right from the TV screen. The sensor is not in front of the screen but we
can't figure out how to stop the constant sensing of IR. Any suggestions?
Tweeter tells me they can't do anything about it.

Mike

Niles IR router with a Sony Bravia LCD
 

Michael Taricani wrote:
I have a new Sony Bravia LCD TV. I also bought a Niles IR router so
I can
keep my cable box out of site. My problem is that the IR sensor is
always
receiving a signal. It took us a while but determined this IR is
coming
right from the TV screen. The sensor is not in front of the screen
but we
can't figure out how to stop the constant sensing of IR. Any
suggestions?
Tweeter tells me they can't do anything about it.

Mike

If the modulation characteristic of the LCD just happens to be the same
as IR controller, that is indeed a problem. Hard to believe a
manufacturer would let the 2 signals interfere. Is there any way to get
the IR receiver just below the screen so that it doesn't 'see' the
screen? Or, a black drinking straw piece (1 or 2 inches) in front of
the IR sensor (looking through the tube) might be sufficient as a
'blinder'. Even shorter might work, too.

GG

Niles IR router with a Sony Bravia LCD
 

On 8 Sep 2006 21:21:33 -0700, "G-squared" wrote:

Michael Taricani wrote:
I have a new Sony Bravia LCD TV. I also bought a Niles IR router so
I can
keep my cable box out of site. My problem is that the IR sensor is
always
receiving a signal. It took us a while but determined this IR is
coming
right from the TV screen. The sensor is not in front of the screen
but we
can't figure out how to stop the constant sensing of IR. Any
suggestions?
Tweeter tells me they can't do anything about it.

Mike

If the modulation characteristic of the LCD just happens to be the same
as IR controller, that is indeed a problem. Hard to believe a
manufacturer would let the 2 signals interfere. Is there any way to get
the IR receiver just below the screen so that it doesn't 'see' the
screen? Or, a black drinking straw piece (1 or 2 inches) in front of
the IR sensor (looking through the tube) might be sufficient as a
'blinder'. Even shorter might work, too.

It sounds like you have isolated the source of the problem, but
depending of your arrangment you also have to make sure that the light
from the IR-sender can not get to the IR-receiver. It can result in
sustained Feedback.

The solution can be the same as above, shield off the IR-receiver
field of view. If it is light from the TV, it needs a reflection in
front of the TV to get to the sensor. See if you can do something
about that. Remember that a glossy surface reflects with angles
symetrical to the "normal of the surface".
/Jan