[Electronics-talk] Digital TV options for TV radios

Sat Feb 21 16:35:16 UTC 2009

For both digital TV and radio, the development of a portable unit is 
dependent on the development of a chip set that is powerful enough to 
handle the tasks, and low-powered enough to work in a portable 
device.  The first chip sets developed are always expensive and 
high-powered.  Until recently the whole digital TV signal had to be 
decoded to extract the audio, driving up the cost and power 
requirements.  I understand that chip development is such that this 
is no longer necessary, but don't know if the chips yet have low 
enough power consumption to make a portable device possible.  We will 
get there, but it takes time and money.

Dave

At 01:28 PM 2/20/2009, you wrote:
>Hi Steve, Ken here.  Not sure how good this will do, but with all the  talk
>of HD radio, if a portable radio is ever developed, would that make it
>possible for reception of a Digital audio signal for TV too?  That's 
>a big  if since
>it's been five years of Hype, and we still don't have a portable HD  radio.
>And these idiots in the broadcast industry can't figure out 
>why  people aren't
>switching to it.  When the HD champions say It's time to  upgrade, 
>my question
>is Upgrade to What?  it crystal clear and free is all  they talk about never
>Content.  That's what I hope is different about  digital TV transition. More
>channels is great, but is there something blind or  sighted will watch?  I
>would hope we get the classic TV channel that is on  digital.  If you go to
>Detroit this summer, you will see it on the  secondary channel of 
>the ABC station,
>WXYZ think that's Channel seven.  I  bet it's been a while since you saw
>Emergency, Adam twelve, or It Takes a Thief  Huh?
>
>I pledge to  participate actively in the efforts of the national federation
>of the blind to  achieve equality, opportunity, and security for the 
>blind; to
>support the  policies and programs of the federation; and abide by its
>constitution.
>
>
>In a message dated 2/20/2009 2:09:05 P.M. Eastern Standard Time,
>electronics-talk-request at nfbnet.org writes:
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>Today's  Topics:
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>1. Digital TV Options for TV Radios (Steve  Jacobson)
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>----------------------------------------------------------------------
>
>Message:  1
>Date: Fri, 20 Feb 2009 11:25:50 -0600
>From: "Steve Jacobson"  <steve.jacobson at visi.com>
>Subject: [Electronics-talk] Digital TV  Options for TV Radios
>To: "electronics-talk at nfbnet.org"  <electronics-talk at nfbnet.org>
>Message-ID:  <auto-000013656710 at mailback1.g2host.com>
>Content-Type: text/plain;  charset="us-ascii"
>
>This seems like a good project to direct at those of  us hear who have an
>interest in experimenting.  On another list,  frustration was 
>expressed over the
>fact that the TV
>radios that many of us  use won't work as TV stations go digital.  I
>suggested some alternatives,  but it would be good if those of us 
>who don't mind
>experimenting could
>come up with some ideas that we specifically know work.
>
>Do  any of you have experience with digital converter boxes with audio
>outputs?  My understanding is that audio outputs are not uncommon, 
>but  how common
>are they
>on boxes covered by the coupons?
>
>When audio  outputs are available, one suggestion I made was that there are
>several FM  transmitters around that might allow a digital converter to make
>the audio
>available through an FM radio anywhere in the house.  These devices  seem to
>come and go.  Has anyone purchased an FM transmitter during 
>the  past month or
>two
>that they like?  I have several, but they are all a  couple of years old.
>This approach isn't as good as a TV radio, but it  would afford some 
>portability
>around the house.
>
>Does anyone make  a truly portable digital converter?  I suspect the demand
>for such a  thing would be very small, but who knows.
>
>Any ideas might be helpful as  we see analog TV disappear.
>
>Best regards,
>
>Steve  Jacobson
>
>
>
>
>
>
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