Re: FIRM Pics + Questions

[ian.bird@xxxxxxx]

Hi Dan

> What do you mean by multi command sequence? Multiple commands
transmitted
in
> a sequence? If yes, then I'm not aware of such remotes...
This may not be what was meant but is similar - I have a remote (Sanyo)
which sends an initial command followed by a generic repeat signal within
a
time frame. So you get using volume for example a single long space
coded
signal meaning vol down or up then a short repeat signal saying to the
unit
more of the first command. The start bit lengths are noticeably longer
using this remote than any other I have e.g. Sony etc.

This is not that uncommon and I have seen reference to it on the web
although I don't remember where.

HTH

Ian

Ian Bird
CibaVision UK Ltd.
Direct dial 01489 775570
Fax           01489
779570


                                                                                                                                
                     
"Dan"                                                                                                     
                     
<dtoma@xxxxxxx>           
To:      
<ukha_d@xxxxxxx>                                               
                                              
cc:                                                                              
                     
25/10/02 12:38          
Subject:  Re: [ukha_d] FIRM Pics +
Questions                                     
                     
Please respond
to                                                                                         
                     
ukha_d                                                                                                    
                                                                                                                                
                                                                                                                                




Hi Shane,

As part of the questions are related to my application (IRM).. I'll try
to
answer you:

>  Now the serial interface board actually has to decode the IR (HV
used to
do that
> for you) and generate an ASCII command string - is that right ?
> Actually I guess what would make it clearer to me is the serial to
PC
> protocol if you are willing to release it.

The signal decoding is now a PC task, inside the IRM application

> Finally - what are the limitations of FirM that you are aware
of.  I am
> a newbie to IR and a bit confused but have thoughts like:
>1) Different remotes use different frequencies - any problem ?

For the moment the application is compatible only with the remotes using
a
carrier between 30-40KHz. The old ITT ones, using small pulses and no
carrier ar not supported. Anyway, I think that the majority of the
actual
remotes use a carrier.

> 2) Some keys send multi command sequences etc - any problem ?

What do you mean by multi command sequence? Multiple commands
transmitted
in
a sequence? If yes, then I'm not aware of such remotes...Anyway, the
application is able then to consider the multicommand sequence as a
single
command, so is not a problem... Please give me more details about this
type
of remotes and I will take care of...

Best regards,
Dan



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