Bit Angle Modulation (BAM) in a PIC

[lanyong]

The blinking problem has been fixed.

There is NO blinking at all with MIBAM.
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when i do the same bam as u. blink as u,haha.

i find ur post, it is very interesting.


in fact u let the bam is high, such as 2.4kHz, u will not watch the blink ,same.

[Darrel Taylor]

when i do the same bam as u. blink as u,haha.

Really? That's odd.

Which PIC are you using?
What OSC frequency, and how many LED's?

Are you assembling with MPASM or PM?

Did the program give you any warnings or errors?
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[lanyong]

Really? That's odd.

Which PIC are you using?
What OSC frequency, and how many LED's?

Are you assembling with MPASM or PM?

Did the program give you any warnings or errors?
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ten days ago. i try the bam, find from 127 to 128, the led blink.100Hz, 8bit.

i know it is change so much. so i find ur post and i send some post to urs.

last week, i let it to 2.4kHz, bam. the led will not blink.

i don't test ur mibam, i think it is good.

i use pic18, and 48 dmx512 channel. 2.4kHz bam 8 bit.

[pmfa061]

I'm not sure this is the right place to ask, but I was wondering if BAM is a patented technique (e.g. by Artistic License or any other company) and hence commercial use of BAM requires fees to be paid, or if it just like PWM a technique that can be freely implemented in any device.
10x in advance for any info

[Darrel Taylor]

Artistic License claims to have "Invented" BAM. But nowhere have I found a claim that they have received or even applied for a patent.
Although I have found a dozen or so patents that would probably keep A.L. from getting one if they tried.

Not that it would matter very much, because this is not BAM.
BAM is flawed, and MIBAM represents a "Significant Improvement".
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[tenaja]

BAM has been in public domain for over one year. That alone means it is not patentable.

[JEC]

Artistic License claims to have "Invented" BAM. But nowhere have I found a claim that they have received or even applied for a patent.
Although I have found a dozen or so patents that would probably keep A.L. from getting one if they tried.

Not that it would matter very much, because this is not BAM.
BAM is flawed, and MIBAM represents a "Significant Improvement".
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....... BAM was published by AL *specifically* to place the idea & implementation in the public domain and keep companies from patenting it.

Partly because there's been some ugliness in the professional lighting / theatre world by companies patenting (and then aggressively litigating) LED dimming and control techniques. These techniques have been obvious to those skilled in the trade since at least the 1970s, but the patents were granted nonetheless.

[Darrel Taylor]

....... BAM was published by AL *specifically* to place the idea & implementation in the public domain and keep companies from patenting it.

Excellent move by Artistic License.

Hopefully, by finding the Mirror Image improvement to BAM and releasing it to the public domain ...
RadikalQ3 and I have made it impossible for some squatter to patent a MIBAM equivalent too.

MIBAM - (Mirror Imaged Bit Angle Modulation)
http://www.picbasic.co.uk/forum/showthread.php?t=10564
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