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| Science Forum Index » Electronics - Cad Forum » Rarely I get to brag...... |
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| Jim Thompson... |
 Posted: Sun Oct 25, 2009 6:16 pm |
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| Tim Wescott... |
| Posted: Sun Oct 25, 2009 7:07 pm |
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On Sun, 25 Oct 2009 17:16:20 -0700, Jim Thompson wrote:
[quote]http://www.globalspec.com/FeaturedProducts/Detail/honeywell/
HMC5843_3Axis_Compass_IC_magnetic_sensor/105374/0[/quote]
Inneresting.
Silicon-based sensors are fascinating, particularly the MEMS one (which
this ain't, I think, but still...).
--
www.wescottdesign.com |
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| Jim Thompson... |
| Posted: Sun Oct 25, 2009 7:14 pm |
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On Sun, 25 Oct 2009 20:07:11 -0500, Tim Wescott <tim at (no spam) seemywebsite.com>
wrote:
[quote]On Sun, 25 Oct 2009 17:16:20 -0700, Jim Thompson wrote:
http://www.globalspec.com/FeaturedProducts/Detail/honeywell/
HMC5843_3Axis_Compass_IC_magnetic_sensor/105374/0
Inneresting.
Silicon-based sensors are fascinating, particularly the MEMS one (which
this ain't, I think, but still...).
[/quote]
Sensors were external.
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
With Half My Brain Tied Behind My Back
Still More Clever Than Mr.Prissy Pants |
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| Martin Riddle... |
| Posted: Sun Oct 25, 2009 7:30 pm |
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"Jim Thompson" <To-Email-Use-The-Envelope-Icon at (no spam) My-Web-Site.com> wrote in
message news:bgq9e55m36sdrd4dio30go4pq5k94qmu9b at (no spam) 4ax.com...
[quote]Rarely I get to brag, but here's a system with an ASIC in it that I
designed...
http://www.globalspec.com/FeaturedProducts/Detail/honeywell/HMC5843_3Axis_Compass_IC_magnetic_sensor/105374/0
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
[/quote]
Neat, 0.8 mA. I can see GPS applications, but cell phones not so much.
I just don’t see a practical app in the phone, maybe the Japanese will
find it a novelty.
Cheers |
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| Martin Riddle... |
| Posted: Sun Oct 25, 2009 7:33 pm |
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"Jim Thompson" <To-Email-Use-The-Envelope-Icon at (no spam) My-Web-Site.com> wrote in
message news:gut9e5pgsql1q6a73ktdsi5s8inc8pc6vt at (no spam) 4ax.com...
[quote]On Sun, 25 Oct 2009 20:07:11 -0500, Tim Wescott <tim at (no spam) seemywebsite.com
wrote:
On Sun, 25 Oct 2009 17:16:20 -0700, Jim Thompson wrote:
http://www.globalspec.com/FeaturedProducts/Detail/honeywell/
HMC5843_3Axis_Compass_IC_magnetic_sensor/105374/0
Inneresting.
Silicon-based sensors are fascinating, particularly the MEMS one
(which
this ain't, I think, but still...).
Sensors were external.
...Jim Thompson
[/quote]
The MEMS stuff requires heavy physics, and seems to be on the mechanical
engineering side of things.
Cheers |
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| Jim Thompson... |
| Posted: Sun Oct 25, 2009 7:39 pm |
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On Sun, 25 Oct 2009 21:30:05 -0400, "Martin Riddle"
<martin_rid at (no spam) verizon.net> wrote:
[quote]
"Jim Thompson" <To-Email-Use-The-Envelope-Icon at (no spam) My-Web-Site.com> wrote in
message news:bgq9e55m36sdrd4dio30go4pq5k94qmu9b at (no spam) 4ax.com...
Rarely I get to brag, but here's a system with an ASIC in it that I
designed...
http://www.globalspec.com/FeaturedProducts/Detail/honeywell/HMC5843_3Axis_Compass_IC_magnetic_sensor/105374/0
...Jim Thompson
[snip]
Neat, 0.8 mA. I can see GPS applications, but cell phones not so much.
I just don’t see a practical app in the phone, maybe the Japanese will
find it a novelty.
Cheers
[/quote]
0.8mA was quite the struggle. Everything you can think of was able to
be powered down.
Actually, When I did the design (February to December 2007) I didn't
have a clue about the application(s), just the required specifications
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
With Half My Brain Tied Behind My Back
Still More Clever Than Mr.Prissy Pants |
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| Hal Murray... |
| Posted: Sun Oct 25, 2009 9:04 pm |
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[quote]Neat, 0.8 mA. I can see GPS applications, but cell phones not so much.
I just don’t see a practical app in the phone, maybe the Japanese will
find it a novelty.
[/quote]
Cell phones need GPS in order to give their location to 911. They
already have a display and UI... So anything you can do on a GPS
toy, you can do on a cell phone.
Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
--
These are my opinions, not necessarily my employer's. I hate spam. |
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| Bill Sloman... |
| Posted: Mon Oct 26, 2009 1:08 am |
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On Oct 26, 4:04 am, hal-use... at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal
Murray) wrote:
[quote]Neat, 0.8 mA. I can see GPS applications, but cell phones not so much.
I just don’t see a practical app in the phone, maybe the Japanese will
find it a novelty.
Cell phones need GPS in order to give their location to 911. They
already have a display and UI... So anything you can do on a GPS
toy, you can do on a cell phone.
[/quote]
Cell phones get their location by talking to the nearest fixed
transmitters - which is what defines the cell they are in. They don't
need GPS to do that. The basic hardware doesn't translate this
location into GPS coordinates, and some cell-phones - such as my Mio
A701 - have separate GPS hardware.
[quote]Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
[/quote]
You have to pay extra to be able to exploit the network connection.
--
Bill Sloman, Nijmegen |
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| Jim Thompson... |
| Posted: Mon Oct 26, 2009 8:49 am |
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On Sun, 25 Oct 2009 22:04:49 -0500,
hal-usenet at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote:
[quote]
Neat, 0.8 mA. I can see GPS applications, but cell phones not so much.
I just don’t see a practical app in the phone, maybe the Japanese will
find it a novelty.
Cell phones need GPS in order to give their location to 911. They
already have a display and UI... So anything you can do on a GPS
toy, you can do on a cell phone.
Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
[/quote]
Ain't that the truth! I'd like a phone with a full keyboard (for
E-mail), but NO camera... _many_ locations I visit forbid cameras
inside the facility.
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food. |
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| Hal Murray... |
| Posted: Mon Oct 26, 2009 11:35 am |
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[quote]Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
Ain't that the truth! I'd like a phone with a full keyboard (for
E-mail), but NO camera... _many_ locations I visit forbid cameras
inside the facility.
[/quote]
What do they do about cell phones? Do they check for them? Do
they know which ones don't have cameras and let them in? Or just
prohibit all cell phones? ...
--
These are my opinions, not necessarily my employer's. I hate spam. |
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| Jim Thompson... |
| Posted: Mon Oct 26, 2009 11:53 am |
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On Mon, 26 Oct 2009 12:35:36 -0500,
hal-usenet at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote:
[quote]
Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
Ain't that the truth! I'd like a phone with a full keyboard (for
E-mail), but NO camera... _many_ locations I visit forbid cameras
inside the facility.
What do they do about cell phones? Do they check for them? Do
they know which ones don't have cameras and let them in? Or just
prohibit all cell phones? ...
[/quote]
They check for cameras.
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
With Half My Brain Tied Behind My Back
Still More Clever Than Mr.Prissy Pants |
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| Clint Sharp... |
| Posted: Mon Oct 26, 2009 12:16 pm |
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In message <5fobe5d2henmk1n0urhsv87d50dpo0nl9o at (no spam) 4ax.com>, Jim Thompson
<To-Email-Use-The-Envelope-Icon at (no spam) My-Web-Site.com> writes
[quote]On Mon, 26 Oct 2009 12:35:36 -0500,
hal-usenet at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote:
Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
Ain't that the truth! I'd like a phone with a full keyboard (for
E-mail), but NO camera... _many_ locations I visit forbid cameras
inside the facility.
What do they do about cell phones? Do they check for them? Do
they know which ones don't have cameras and let them in? Or just
prohibit all cell phones? ...
They check for cameras.
Mmm, similar to some places I visit. Others just ban all non approved[/quote]
cell phones (I.E. not company issued ones)
[quote]
...Jim Thompson
[/quote]
--
Clint Sharp |
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| Bill Sloman... |
| Posted: Mon Oct 26, 2009 1:17 pm |
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On Oct 26, 9:24 pm, hal-use... at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal
Murray) wrote:
[quote]Cell phones get their location by talking to the nearest fixed
transmitters - which is what defines the cell they are in. They don't
need GPS to do that. The basic hardware doesn't translate this
location into GPS coordinates, and some cell-phones - such as my Mio
A701 - have separate GPS hardware.
I thought the FCC had mandated GPS. Thanks for making me do some
investigation. (I knew about the triangulation, but I didn't think
it worked very well.)
Here is the best URL I found:
http://library.findlaw.com/1999/Nov/1/130152.html
Quick summary:
The FCC mandated accuracy. The cell phone companies could get
that by either upgrading the gear at all their towers, or upgrading
all their cell phones to use GPS. Some went each way.
[/quote]
That is the US situation now. Here's a lawyer's view of the
geographical information available from cell-phone company records in
the UK and Australia.
http://www.lawlink.nsw.gov.au/lawlink/pdo/ll_pdo.nsf/pages/PDO_safeunsafeusemobilephoneevidence
--
Bill Sloman, Nijmegen |
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| Hal Murray... |
| Posted: Mon Oct 26, 2009 2:24 pm |
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[quote]Cell phones get their location by talking to the nearest fixed
transmitters - which is what defines the cell they are in. They don't
need GPS to do that. The basic hardware doesn't translate this
location into GPS coordinates, and some cell-phones - such as my Mio
A701 - have separate GPS hardware.
[/quote]
I thought the FCC had mandated GPS. Thanks for making me do some
investigation. (I knew about the triangulation, but I didn't think
it worked very well.)
Here is the best URL I found:
http://library.findlaw.com/1999/Nov/1/130152.html
Quick summary:
The FCC mandated accuracy. The cell phone companies could get
that by either upgrading the gear at all their towers, or upgrading
all their cell phones to use GPS. Some went each way.
--
These are my opinions, not necessarily my employer's. I hate spam. |
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| Martin Riddle... |
| Posted: Mon Oct 26, 2009 7:45 pm |
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Guest
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"Jim Thompson" <To-Email-Use-The-Envelope-Icon at (no spam) My-Web-Site.com> wrote in
message news:5fobe5d2henmk1n0urhsv87d50dpo0nl9o at (no spam) 4ax.com...
[quote]On Mon, 26 Oct 2009 12:35:36 -0500,
hal-usenet at (no spam) ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote:
Phones also have network connections. They aren't really phones
any more so much as platforms for collecting junk/hacks and goodies.
Ain't that the truth! I'd like a phone with a full keyboard (for
E-mail), but NO camera... _many_ locations I visit forbid cameras
inside the facility.
What do they do about cell phones? Do they check for them? Do
they know which ones don't have cameras and let them in? Or just
prohibit all cell phones? ...
They check for cameras.
...Jim Thompson
--
Wish I still had my old analog nokia. Was cheap and the battery never[/quote]
died. No camera either.
That was before ATT sold off its Wireless business. Perfect for the G
job.
Cheers |
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