ABC Logo in Jeopardy?

Hi to all,

the famous ABC logo is ( the lissajous pattern ) is to be replaced with a new and very boring one that just says "ABC1" - a slavish imitation of the British BBC.

The old logo will supposedly be still seen, but is no longer the primary one.

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As some of you would know, the old ABC logo can be produced on the screen of any analogue CRO using X-Y ( ie horizontal & vertical ) mode using two audio generators - one generator for each axis. The famous pattern is obtained when the frequencies are set to an exact ratio of 3:1, the higher frequency being used for the vertical.

A small error in the frequency ratio causes the pattern to rotate, just as it once did when ABC used it on air as their station ID.

Lissajous patterns can be produced with any ratio of two frequencies; a 1:1 ratio results in a circular pattern and if the ratio is exact, the pattern becomes stationary appearing to be an ellipse or a circle depending on the relative phase of the two generators.

It is possible to go further with these patterns if one generator can output a square wave - likewise the use of a simple 90 degree phase shift network allows only one generator to produce a circular pattern on the screen. A second generator is then able to " modulate " that circle into some surprising patterns. These patterns will be seen as spinning on the CRO screen unless the frequency ratios are exact and locked in phase.

I have posted four attractive looking examples of what can be produced on ABSE - "alt.binaries.schematics.electronic"

Any Google Groups uses will have to get themselves a REAL newsreader to see them.

....... Phil

Reply to
Phil Allison
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: : ....... Phil : : Playschool must have been very informative today.

TT :-))

Reply to
TT

Yeah they should call it ABBC, but it is a poor imitation of the BBC. Where are the Australian equivalents of BBC Horizon and like? The Howard stooges probably had a lot to do with the ABC's progressive loss of quality. The news and current affairs has been dumbed down, and there is that endless serving of excrement called The Bill.

The iconic ABC lissajous pattern is great, it is a perfect symbol for a broadcaster, I don't think they should fuck with it. Maybe you can recalibrate it for them.

Reply to
Bhagat Gurtu

I remember a long long time ago creating lissajous patterns on the family black and white TV, conecting a stereo audio amp direct to the deflection coils. Was great fun until I removed the signals and it burnt the phosphor in the middle of the tube. The parents thought for a while a fly had landed there. I wasn't too popular when they finally caught on what had happened.

Reply to
Ted

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Personally I can't see why the ABC can't retain the original Lissajous figure and add "1" for the main ABC feed, "2" for ABC2 and "HD" for the high def feed. As has been pointed out, this has been an iconic symbol for the ABC for decades.

I recall the Lissajous figure used to slowly rotate (used at the beginning of the evening news AFAIR many years ago as the opening fanfare played). Simple idea, but very clever in its day. I wonder who thought of using it as the ABC's logo? Could Google but frankly I too friggin' lazy to do it today. :P

Cheers, Alan

Reply to
Alan Rutlidge

"Ted" "Phil Allison"

** LOL !!

The nearest thing to that I did once for a bit of mischief was to connect the horizontal deflection coils ( of the family's Kriesler B&W set ) in reverse.

Looked just fine until some text appeared on the screen.

....... Phil

Reply to
Phil Allison

On Wed, 30 Jan 2008 11:32:00 +1100, "Phil Allison" wrote:

: :Hi to all, : :the famous ABC logo is ( the lissajous pattern ) is to be replaced with a :new and very boring one that just says "ABC1" - a slavish imitation of the :British BBC. : :The old logo will supposedly be still seen, but is no longer the primary :one. : :

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: :As some of you would know, the old ABC logo can be produced on the screen of :any analogue CRO using X-Y ( ie horizontal & vertical ) mode using two :audio generators - one generator for each axis. The famous pattern is :obtained when the frequencies are set to an exact ratio of 3:1, the higher :frequency being used for the vertical. : :A small error in the frequency ratio causes the pattern to rotate, just as :it once did when ABC used it on air as their station ID. : :Lissajous patterns can be produced with any ratio of two frequencies; a 1:1 :ratio results in a circular pattern and if the ratio is exact, the pattern :becomes stationary appearing to be an ellipse or a circle depending on the :relative phase of the two generators. : :It is possible to go further with these patterns if one generator can output :a square wave - likewise the use of a simple 90 degree phase shift network :allows only one generator to produce a circular pattern on the screen. A :second generator is then able to " modulate " that circle into some :surprising patterns. These patterns will be seen as spinning on the CRO :screen unless the frequency ratios are exact and locked in phase. : :I have posted four attractive looking examples of what can be produced on :ABSE - "alt.binaries.schematics.electronic" : :Any Google Groups uses will have to get themselves a REAL newsreader to :see them. : : : :....... Phil : :

The reasoning for adoption of the 3:1 Lissajous figure by the ABC makes interesting reading.

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I wonder how they are going to justify removing the old logo given that they have espoused such good reasons for using it in the first place.

Reply to
Ross Herbert

"Ross Herbert"

** The actual reason for using a moving lissajous is that it looked so intriguing - even to the non technical.

As stated, the 2:1 ratio was already in use as a logo, so it had to be a

3:1

** This dumb Q is based on several falsehoods.

Yawnnnnnnnnnnnnnnnn.......

.......... Phil

Reply to
Phil Allison

Years ago, I made such a device - used uA495 multipliers. By adjusting the offsets as well as the modulating amplitude, you could get rotating "wagon wheels", fancy flower patterns inter alia and could rotate them in 3D. Then, one of our engineers, wrote a program to produce 3D Lissajous patterns. I wish I kept that - the results were even more Speccy. Alan

Reply to
Alan Peake

On Wed, 30 Jan 2008 14:30:49 +0900, "Alan Rutlidge"

Reply to
Franc Zabkar

: :> I wonder how they are going to justify removing the old logo given that :> they :> have espoused such good reasons for using it in the first place. : : :** This dumb Q is based on several falsehoods. : : Yawnnnnnnnnnnnnnnnn....... : :

Phil, you have - perhaps inadvertently - mis-read my "observation" as a "question". It is NOT a question", just a thought on what could be a possible denouncement of their original reasons for using the 3:1 Lissajous in the first place.

Anyway, this is the response received fron the ABC as to the disontinuation of the logo.

Thank you for your email regarding the ABC waveform logo.

The ABC acknowledges your concern over reports that this logo is being abolished. I would like to assure you that the logo is being retained. Below is a statement from Kim Dalton, Director of ABC Television:

"ABC TV is refreshing its on-air image for 2008, including its logos for both TV channels. But feel assured the ABC icon "wave" or "worm" logo will remain very much part of this new look for both networks. The new concept will launch on air on Friday February 8 and will help differentiate the two channels and give them a distinctive personality and appeal."

Please be assured, your comments have been noted and conveyed to ABC Television. Thank you for taking the time to write.

Yours sincerely

Matthew Galvin ABC Audience and Consumer Affairs

Reply to
Ross Herbert

It wouldn't matter what I wrote or how I phrased it, Phil would always be able to find an excuse to start in with verbal abuse.

Just as well Phil isn't in the Indian cricket team - although that's not a bad place for him. You would only have to grin at him and he'd pick a fight with you for no good reason.

My mother always said to us kids "Don't go out trying to pick fights. If you can't find a reason to be nice to someone, then don't say anything".

I doubt that Phil had a mother, or, if he did, she was a bad one, or he ignored her good advice...

Reply to
Ross Herbert

It's OK Ross, I know Philthy *very* well indeed. I have been abused by this entity for a very long time now and have been accused of all sorts of heinous crimes and revolting acts.

At the end of the day he is just a Bipolar suffering, foul mouthed, lonely, sad little man with no qualifications, who is un-employable and just sits around all day in his rented bed-sit typing volumes of Google crap all over Usenet trying to pick fights. While the rest of us have a life ;-)

Cheers TT

Reply to
TT

Ross, you are no orphan (although I sometimes think Phil may have been). Like many before me and no doubt many after, Phil just has to beg to disagree. I have no issue with his disagreeing, just the very disagreeable way he seems to go about it. :-(

Cheers, Alan

Reply to
Alan Rutlidge

Yes, Phil's tirades against yourself and several other prominent posters has not escaped my notice. I generally try to avoid responding to Phil's posts but I weakened and hoped he might be on a "good" day.

Reply to
Ross Herbert

In the book by Douglas Adams "Hitch Hiker's Guide to the Galaxy" there is a brief mention of an immortal that was so bored with his existence he set about to insult every sentient being in the universe in alphabetical order.

Does any of this sound familiar yet? Is art imitating life or vice versa ;-)

Or if you really wish to understand Philthy better here some reading

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You will now see that your comment re: "he might be on a good day" is so very relevant. Of course this is largely attributable to whether or not he is taking any medication regularly ;-)

Cheers TT

Reply to
TT

Probably a similar idea to spending a fortune on the "T" logo for Telstra. Painting a turd with a trendy logo wont stop it stinking.

Reply to
kreed

up,

You could add the Commonwealth bank to that list.

Exactly.

MrT.

Reply to
Mr.T

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