Is there such a chip that receives TV remote control IR signals and
stores them so they can be retreived later via I2C?

I am aware that I can do that myself using a uController, but I was
wondering if there is already a chip out there. If it also had a
transmitter, that would be even better.

Thanks

Matthias


PS: Yes, I did use Google, but I seem to get only hits for boards and
MPU's that support IrDA and I2C... .

Matthias Melcher <mm@matthiasm.com> wrote:

For some TV remotes, yes. But a single chip can't generally fit all
TV's remotes. There are just too many different command encodings use
out there.

--
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

You just need a large SRAM internally to do this, and then maybe store to
SPI dataflash.


I know one remote controller design which just outgrew 256 kB and needs 512
kB :-)

--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may bot be shared by my employer Atmel Nordic AB

Ulf Samuelsson wrote:
i am looking for a chip that stores the last received ir codes and
stores them until my controller decides to pick them up via i2c. no need
to translate anything. iirc, most ir codes are 12 bits, so they fit
easily onto two i2c registers.

i did find a chip that converts ir to rs232, but unfortunatly i do not
have a serial line left on my pic.

thanks,

matt

ps; yes, ill repair the shift key... .

Matthias Melcher <mm@matthiasm.com> wrote:

You didn't get my point. The remote of a TV you don't know, for all
practical means and purposes, doesn't emit "IR codes" --- it emits
patterns of IR light that mean something to the TV, but not to you.
Without knowing for which TV they are, they'll just be random
variations of intensity. I.e. if you want to store these signals, you
either have to restrict yourself to a single model (or family), or
you'll have to store complete IR input intensity traces, and hand the
job of deciphering them to somebody else. E.g. a web-based database
backend, like Logitech did it for their "Harmony" line of universal
remotes.

--
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

Hans-Bernhard Broeker wrote:
got you. thanks.

this was meant to support as many remote controls as possible, but
limiting myself to rc5 seems good enough. i was thinking about something
like this project, only for i2c.

http://www.users.bigpond.com/pbhandary/pic/IRSony.html

anyway, seems i have to vurn this onto a pic or avr myself.

thanks for the help

matthias