Re: Biometric Standards - Hardware & Devices Discussion Boards

Re: How to put a program onto a netbook.

Luc Pattyn20-Jan-10 11:23

20-Jan-10 11:23

Look for VirtualCD or some other CD emulator; create the virtual disk(s) on a system that has a physical CD drive, then move it to your netbook (i.e. install VirtualCD on both). I have used VirtualCD on a system with CD drive to avoid having to insert the CD each time to get some games started.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.
[The QA section does it automatically now, I hope we soon get it on regular forums as well]

Transfering Image from Digital Camera to PC

TommyTomToms11-Jan-10 22:56

TommyTomToms

11-Jan-10 22:56

Hi all,

I need to somehow transfer an image from a digital camera to a PC. Without using a memory card etc. i.e. live feed. (Very high res pictures)

- I could use a webcam but the quality is not very good.
- I was thinking about using a HD video camera and sending the streaming video to the video input (on the graphics card). The problem is quality (I need atlest +-8 megapixel image) and costs.

Can modern Digital SLR cameras do what I am asking. Send pictures taken, directly to PC. If so what is this feature called?

Thanks

Re: Transfering Image from Digital Camera to PC

WoutL12-Jan-10 0:56

WoutL

12-Jan-10 0:56

There are cameras with WiFi.

Wout Louwers

Re: Transfering Image from Digital Camera to PC

greenzeal32127-Jan-10 21:16

greenzeal321

27-Jan-10 21:16

hi how ARe You..??

Well YOu can send

[url=http://www.greenzeal.co.uk/Store/ration_packs]ration pack[/url]

Re: Transfering Image from Digital Camera to PC

Richard MacCutchan12-Jan-10 1:03

Richard MacCutchan

12-Jan-10 1:03

Digital video is usually transferred direct by FireWire connection, and some digital still camers have direct USB connections. I would suggest researching digital camera websites, as they are likely to be trialling the latest options.

Re: Transfering Image from Digital Camera to PC

TommyTomToms12-Jan-10 1:18

TommyTomToms

12-Jan-10 1:18

I found something called "tethered shooting" which seems like it does what I need. Thanks.

Biometric Standards

Adriaan Davel7-Jan-10 20:21

Adriaan Davel

7-Jan-10 20:21

Hi,
There seems to be efforts around standardizing BioMetric integrations, does anyone here have some first hand experience in this?

We are looking at using fingerprint scanners, would hate to have to code by manufacturer / vendor...

____________________________________________________________
Be brave little warrior, be VERY brave

Re: Biometric Standards

Ruan Benade7-Jan-10 22:06

Ruan Benade

7-Jan-10 22:06

Hi,
What exactly do you want to do with the fingerprint readers?

Most manufacturers / vendors have their own ways for doing things, but so far I haven't come across two or more manufacturers / vendors using the same standard for their API.

It would be nice though... Smile | :)

Re: Biometric Standards

Adriaan Davel7-Jan-10 22:38

Adriaan Davel

7-Jan-10 22:38

Well for now I just want to get a fingerprint... We are looking at a public silverlight website and with SL4's COM availability I was hoping for a "general" COM API to a fingerprint reader connected to the machine...

I thought my hopes were not too far fetched based on the following web pages:

http://www.bioapi.org/[^]
http://ieeexplore.ieee.org/Xplore/login.jsp?url=http://ieeexplore.ieee.org/iel5/2/17784/00820046.pdf&authDecision=-203[^]
http://www.iosoftware.com/Documents/The%20Biometric%20Standard.pdf[^]

____________________________________________________________
Be brave little warrior, be VERY brave

COM port numbering sequence ??

Vaclav_7-Jan-10 9:09

Vaclav_

7-Jan-10 9:09

I have "accidentally" uninstalled COM ports in Win2000 Device Manager ( please don't make jokes about me still using 2000). Next thing I see - windows found the "new" hardware and promtly activated it.
However, instead of having ports 1 2 3 I now have ports 4 5 6.
No big deal , but how do I get the numbers back to 1 2 3?
Thanks for reading.
Vaclav

Re: COM port numbering sequence ??

Rick Shaub11-Jan-10 7:15

Rick Shaub

11-Jan-10 7:15

I'm not sure about Win2k, but in XP you right click on the port in device manager and select "Properties". In the "Properties" form select the "Port Settings" tab. Click the "Advanced" button and the next window that appears should have a combo box with port name choices.

Re: COM port numbering sequence ??

fat_boy14-Jan-10 5:33

fat_boy

14-Jan-10 5:33

The numbering is controled by a value in the registry, I cant recall where it is, but if you reset this then do an uninstall of all your existing com ports you will get backl to where you were.

Morality is indistinguishable from social proscription

Programming for E-Book Readers

Tome Favre7-Jan-10 4:01

Tome Favre

7-Jan-10 4:01

Is there any Programming Language or Programming Plataform for E-Book Readers?

Thank you for the attention!

Re: Programming for E-Book Readers

Dave Kreskowiak7-Jan-10 4:38

Dave Kreskowiak

7-Jan-10 4:38

There's no standard if that what you're referring to. You'll have to check with the manufcaturer of the reader to see what it supports and if there is any SDK that you need.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

DeviceIoControl input buffer question

Mattzimmerer6-Jan-10 0:04

Mattzimmerer

6-Jan-10 0:04

The following is a snippet from an exe that is communicating with my driver.

I am trying to pass a buffer to my driver by using DeviceIoControl. The problem is I've never done this before, so I don't even know if I am on the right track. I guess I just need the starting address of my input struct.
(struct input {int a;int b;int c;};)
The problem seems to be that I cannot put the address of my bInput into a DWORD. Am I going about this right?

When I check out the contents of pInput, it seems to b a DWORD with the actual struct attached after... Im just confused

unsigned long Returned,*pReturned = &Returned;
input bInput;
bInput.a = 1;
bInput.b = 2;
bInput.c = 3;
int test = sizeof(bInput);
input *pInput = &bInput;

     DeviceIoControl(
          hFile,			// Device handle
          IOCTL_MZ_READMEMORY,          // Code
          NULL,				// Buffer TO driver
          0,			// Size of InBuffer
          NULL,				// Buffer FROM driver
          0,				// Size of OutBuffer
          pReturned,			// Bytes output
          (LPOVERLAPPED) NULL);		// Overlapped struc

note: right now my DeviceIoControl call is not using any buffer. I plan on passing the starting address of bInput and the size of bInput.

Re: DeviceIoControl input buffer question

Richard MacCutchan6-Jan-10 0:14

Richard MacCutchan

6-Jan-10 0:14

The input and output buffers are defined here[^] as being LPVOID, which effectively means a pointer to something; what it really contains is between you and the driver. So to call this function passing your buffer address (suitably cast) all you need to code is something like:

DeviceIoControl(
     hFile,            // Device handle
     IOCTL_MZ_READMEMORY,          // Code
     (LPVOID)&bInput,      // Buffer TO driver
     sizeof bInput,        // Size of InBuffer
     (LPVOID)&bOutput,     // Buffer FROM driver
     sizeof bOutput,       // Size of OutBuffer
     pReturned,            // Bytes output
     (LPOVERLAPPED) NULL);     // Overlapped struc

And don't forget to check the return status.

Re: DeviceIoControl input buffer question

Mattzimmerer6-Jan-10 10:36

Mattzimmerer

6-Jan-10 10:36

Thanks!

Re: DeviceIoControl input buffer question

fat_boy14-Jan-10 5:35

fat_boy

14-Jan-10 5:35

Mattzimmerer wrote:
my driver

You wrote a driver and you cant get devioctl to work! OMG | :OMG:

Morality is indistinguishable from social proscription

Re: DeviceIoControl input buffer question

Mattzimmerer14-Jan-10 13:30

Mattzimmerer

14-Jan-10 13:30

Thanks sir, your tons of help. No it works now... maybe you should try helpful comments instead of (in my perception) being boastful. Surely you have asked for help to understand certain things... Obviously in not doing this professionally, its a side project in developing a game hacking tool! Big Grin | :-D

Re: DeviceIoControl input buffer question

fat_boy15-Jan-10 5:41

fat_boy

15-Jan-10 5:41

I saw though that someone else had solved your problem and felt like having a bit of a dig! Smile | :)

Morality is indistinguishable from social proscription

Re: DeviceIoControl input buffer question

Mattzimmerer15-Jan-10 14:10

Mattzimmerer

15-Jan-10 14:10

Yea, lol this stuff is pretty out there if you have only been exposed to userspace programming. Now onto assembly language!

[Message Deleted]

Mattzimmerer2-Jan-10 12:06

Mattzimmerer

2-Jan-10 12:06

[Message Deleted]

Re: RtlCopyMemory() question Repost

Richard MacCutchan2-Jan-10 22:11

Richard MacCutchan

2-Jan-10 22:11

Please post your question in one forum only.

How to use HDD's write cache?

chenayang28-Dec-09 22:18

chenayang

28-Dec-09 22:18

Hi all, I would like to check the throughput of the RAID controller and I need to avoid the bottle neck of HDD. So I would like to make sure all the test data is written to HDD's write cache. Could anyone know how to control the data to be written in the cache(not memory cache) only? Confused | :confused:

Re: How to use HDD's write cache?

Dan Neely30-Dec-09 6:00

Dan Neely

30-Dec-09 6:00

You should be able to disable the OS cache; but the behavior inside the HD itself is a black box to anyone outside. The best you can do is to leave the array idle for a while between test runs so that the controller should flush the on board cache and to limit your writes to slightly less than the maximum the cache can hold.

3x12=36
2x12=24
1x12=12
0x12=18

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.