Re: waveform display in browser

From	Jasen Betts <jasen@xnet.co.nz>
Newsgroups	sci.electronics.design, comp.arch.embedded
Subject	Re: waveform display in browser
Date	2015-07-24 22:41 +0000
Organization	"JJ's own news server"
Message-ID	<moueu7$ch0$2@gonzo.alcatraz> (permalink)
References	(5 earlier) <morp62$aso$1@dont-email.me> <tjq2rah4241gu7i0tloqhi8sn4jjbf0st4@4ax.com> <MPqdnYnexK8q7SzInZ2dnUU7-SudnZ2d@giganews.com> <66t2ra1mebptuknfc16kc11ko5m07t4hfv@4ax.com> <7IKdnb8i8rB2BS_InZ2dnUU7-ScAAAAA@giganews.com>

Cross-posted to 2 groups.

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On 2015-07-24, Tim Wescott <seemywebsite@myfooter.really> wrote:
> On Thu, 23 Jul 2015 16:22:04 -0700, John Larkin wrote:
>>
> I haven't personally done this, but I've poked at it, and an office-mate 
> of mine did it, before all the file conversion stuff was readily 
> available.
>
> If I recall correctly, GIF encoding is on the lines of
>
> 100 black, 1 white, 25 black, etc., for each line.

No, Gif uses LZW compression not RLE. there was a LZW compatible RLE
encoder, but that was purely a patent dodge.

> So if you could generate a bmp in your FPGA,

you don't need to generate the bitmap first, the pixel colour can be
determine4d algorithmically (eg by running several bresenhan line
algorithms in objects in a heap) gif compression only needs one pixel
at a time. (but why bother, just send coordinates and call it SVG)

-- 
umop apisdn

Thread

waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 11:18 -0700
  Re: waveform display in browser Joerg <news@analogconsultants.com> - 2015-07-23 11:53 -0700
  Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-23 16:34 -0400
    Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 16:49 -0400
      Re: waveform display in browser Dimiter_Popoff <dp@tgi-sci.com> - 2015-07-24 00:13 +0300
        Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 17:39 -0400
        Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 14:50 -0700
          Re: waveform display in browser Dimiter_Popoff <dp@tgi-sci.com> - 2015-07-24 01:19 +0300
            Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 15:30 -0700
              Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-23 18:46 -0400
              Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-23 17:54 -0500
                Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 16:22 -0700
                Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-23 19:56 -0400
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 14:55 -0500
                Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-24 14:11 -0700
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 17:00 -0500
                Re: waveform display in browser Herbert Kleebauer <klee@unibwm.de> - 2015-07-25 09:04 +0200
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 14:58 -0500
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 20:15 +0000
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 16:48 -0500
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 22:08 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:46 +1000
                Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-25 14:32 +0000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 22:44 +0000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 23:31 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:49 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 09:28 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 08:43 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 22:27 +0000
                Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 20:57 +1000
                Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 22:41 +0000
                Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-24 22:03 -0400
                Re: waveform display in browser Tim Wescott <seemywebsite@myfooter.really> - 2015-07-24 15:05 -0500
  Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-23 21:37 +0000
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 15:32 -0700
  Re: waveform display in browser Martin Riddle <martin_ridd@verizon.net> - 2015-07-23 20:24 -0400
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-23 21:08 -0700
      Re: waveform display in browser Martin Riddle <martin_ridd@verizon.net> - 2015-07-24 07:52 -0400
        Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-24 14:08 +0000
          Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 22:53 +1000
            Re: waveform display in browser Jasen Betts <jasen@xnet.co.nz> - 2015-07-25 09:46 +0000
              Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-25 08:46 +1000
  Re: waveform display in browser Clifford Heath <no.spam@please.net> - 2015-07-24 00:37 +1000
  Re: waveform display in browser Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2015-07-24 11:46 +0100
  Re: waveform display in browser YD <ydtechHAT@techie.com> - 2015-07-24 14:25 -0300
    Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-24 10:55 -0700
      Re: waveform display in browser rickman <gnuarm@gmail.com> - 2015-07-24 14:09 -0400
      Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-24 18:42 +0000
        Re: waveform display in browser YD <ydtechHAT@techie.com> - 2015-07-24 19:12 -0300
          Re: waveform display in browser Grant Edwards <invalid@invalid.invalid> - 2015-07-25 14:36 +0000
      Re: waveform display in browser Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2015-07-24 14:55 -0400
  Re: waveform display in browser John Larkin <jlarkin@highlandtechnology.com> - 2015-07-27 17:52 -0700
    Re: waveform display in browser Phil Hobbs <hobbs@electrooptical.net> - 2015-07-28 17:58 -0400
  Re: waveform display in browser "jurem" <51422@EmbeddedRelated> - 2015-07-28 09:49 -0500

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