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Old 04-18-2009, 08:15 PM   #1
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Default Amiga Inc AGA patents?

When does the Amiga Inc AGA patents expire ..?

Also.. anyone compiled a list of the relevant Amiga patents from those online-patent-sites?
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Old 04-18-2009, 11:11 PM   #2
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Default Re: Amiga Inc AGA patents?

I believe patents last for 20 years.
I have heard them called utility patents.
best of luck
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Old 04-19-2009, 12:03 AM   #3
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Default Re: Amiga Inc AGA patents?

Patents used to be 17 years, now they're 20 years, I think. I don't know how/when that transition was made.
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Old 04-19-2009, 04:02 AM   #4
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Default Re: Amiga Inc AGA patents?

Amiga Inc never held any Amigs patents, Gateway (now acer) did, I don't think there was sufficient change to the original chipset to warrent anything patentable in the AGA chipset (AGA is just a slight improvement to the Amiga design), and the last Amiga patent to expire was one relating to the right mouse button... And that went a few years ago.

Amiga technology is just a pretty exhibit in the history of computing.
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Old 04-19-2009, 05:29 AM   #5
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Default Re: Amiga Inc AGA patents?

Quote:
Amiga Inc never held any Amigs patents, Gateway (now acer) did, I don't think there was sufficient change to the original chipset to warrent anything patentable in the AGA chipset (AGA is just a slight improvement to the Amiga design), and the last Amiga patent to expire was one relating to the right mouse button... And that went a few years ago.
There were a few more old C= patents beyond the right mouse button patent. Since C= went in 1994, I would expect 2014 to be the last possible year of old C= patents to be active.

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Old 04-19-2009, 06:19 AM   #6
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Default Re: Amiga Inc AGA patents?

2014 sounds plausible.

ECS were introduced in 1990, so no later than 2010 there.
AGA introduced in 1992, so no later than 2012.

To the first two posters, the length of patent is known (20y). The question is when the patent is filed.

Did a check now, patft.uspto.gov on Commodore-Amiga but it only shows a few patents:
Patent Title
1 5,103,499 Beam synchronized coprocessor
2 4,954,949 Universal connector device for bus networks in host computer/co-processor computer system
3 4,874,164 Personal computer apparatus for block transfer of bit-mapped image data
4 4,829,473 Peripheral control circuitry for personal computer
5 4,780,844 Data input circuit with digital phase locked loop
6 4,777,621 Video game and personal computer
7 4,772,882 Cursor controller user interface system

Filing dates between 1986-07-18 to 1989-10-16. The last one should expire this years autumn.
But did Commodore-Amiga only file 7 patents??

A search for "Commodore Business Machines" gives:
Patent Title
1 5,088,035 System for accelerating execution of program instructions by a microprocessor
2 4,989,174 Fast gate and adder for microprocessor ALU
3 4,886,941 Circuit for interfacing mouse input device to computer system
4 4,851,826 Computer video demultiplexer
5 4,813,671 Raster monitor for video game displays
6 4,761,736 Memory management unit for addressing an expanded memory in groups of non-contiguous blocks
7 4,686,487 Current mirror amplifier
8 4,677,890 Sound interface circuit
9 4,599,528 Self booting logical or circuit
10 4,572,506 Raster line comparator circuit for video game
11 4,570,085 Self booting logical AND circuit
12 4,569,019 Video sound and system control circuit
13 4,562,365 Clocked self booting logical "EXCLUSIVE OR" circuit
14 4,561,659 Display logic circuit for multiple object priority
15 D281,503 Printer
16 4,551,682 Digital sine-cosine generator
17 D280,322 Videogame cartridge case

Filing dates between 1983-04-04 to 1988-12-09.

Parameters to use for searching

Could "Commodore" hide under any other name?, or possible individual inventor?
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Old 04-19-2009, 07:40 AM   #7
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Default Re: Amiga Inc AGA patents?

"Miner Jay" gives:
1 5,594,473 Personal computer apparatus for holding and modifying video output signals
2 5,103,499 Beam synchronized coprocessor
3 4,874,164 Personal computer apparatus for block transfer of bit-mapped image data
4 4,829,473 Peripheral control circuitry for personal computer
5 4,777,621 Video game and personal computer
6 4,471,465 Video display system with multicolor graphics selection
7 4,471,464 Data processing system with programmable graphics generator
8 4,471,463 Data processing system with programmable graphics generator
9 4,435,779 Data processing system with programmable graphics generator
10 4,404,972 Implantable device with microprocessor control
11 4,390,022 Implantable device with microprocessor control
12 4,296,476 Data processing system with programmable graphics generator

Filing dates 1979-01-08 to 1993-03-08.

"Haynie Dave" turned up nothing.

"MOS Technology" turned up:
2 4,212,100 Stable N-channel MOS structure
3 4,099,232 Interval timer arrangement in a microprocessor system
4 4,081,699 Depletion mode coupling device for a memory line driving circuit
5 4,074,301 Field inversion control for N-channel device integrated circuits
6 4,011,105 Field inversion control for N-channel device integrated circuits
7 3,991,307 Integrated circuit microprocessor with parallel binary adder having on-the-fly correction to provide decimal results
8 3,941,989 Reducing power consumption in calculators

Filing dates 1974-12-13 to 1977-09-23.

"Yannes Robert" turns up patent 4,677,890 filed in 1983-02-27.

A quick check btw, states:
"For (patent) applications that were pending on and for patents that were still in force on June 8, 1995, the patent term is either 17 years from the issue date or 20 years from the filing date of the earliest U.S. application to which priority is claimed (excluding provisional applications), the longer term applying"

Still nothing explicit "Advanced Graphics Architecture" (AGA).. any ideas on expiry?
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Old 04-19-2009, 08:21 AM   #8
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Default Re: Amiga Inc AGA patents?

@freqmax

At the time Amino bought the Amiga name it was widely reported that Dell retained the 47 Aminga patents that they paid $13m for.

So there should be more than that. How to find them is anyone's guess.

You could try "Commodore Electronics Ltd" as that was the holding company.
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Old 04-19-2009, 08:54 AM   #9
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Default Re: Amiga Inc AGA patents?

"Commodore Electronics Ltd":
1 6,484,189 Methods and apparatus for a multimedia authoring and presentation system
2 5,574,843 Methods and apparatus providing for a presentation system for multimedia applications
3 5,317,732 System for relocating a multimedia presentation on a different platform by extracting a resource map in order to remap and relocate resources
4 4,759,716 Rotating color mapped radar sweep simulator
5 4,388,563 Solid-state fluorescent lamp ballast

Filing dates 1981-05-26 - 1996-09-30.

GOSH.. finding thos pasky AGA related patents seems a pain-in-the-ass.

On a sidenote.. 68020 were released in 1984, and 68030 in 1987 so the CPU stuff should be in the clear.

The reason for interest is to know if the path to FPGA-AGA is blocked by a potential patent-troll attack from Gateway/Escom/Ewans etc..
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Old 04-19-2009, 12:54 PM   #10
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Default Re: Amiga Inc AGA patents?

Quote:
freqmax wrote:
On a sidenote.. 68020 were released in 1984, and 68030 in 1987 so the CPU stuff should be in the clear.
Yes but those aren't C=, those are Freescale/mot.
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Old 04-19-2009, 04:12 PM   #11
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Default Re: Amiga Inc AGA patents?

I can't see how anything in the AGA chipset is patentable, it is built using the 1983 patents of the OCS... There was no new technology in there.
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Old 04-19-2009, 08:05 PM   #12
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Default Re: Amiga Inc AGA patents?

Once we're sure the patents have expired would it be ok to clone the chips? All the parts are getting old and we will be needing replacements.
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Old 04-19-2009, 10:38 PM   #13
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Default Re: Amiga Inc AGA patents?

Maybe the akiko chip is where all the patents were? Has anyone looked for akiko in the patent database?
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Old 04-20-2009, 01:57 AM   #14
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Default Re: Amiga Inc AGA patents?

Quote:
little wrote:
Maybe the akiko chip is where all the patents were? Has anyone looked for akiko in the patent database?
AKIKO is nothing special, and little more than a last ditch attempt by the engineers to cover for the fact Commodore wouldn't put a decent CPU + Fastmem in the A1200...
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Old 04-20-2009, 02:01 AM   #15
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Default Re: Amiga Inc AGA patents?

@persia
Quote:
Once we're sure the patents have expired would it be ok to clone the chips?
No.

Reimplementing the same functionality (say in FPGA) is naturally allowed.
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