My Thought Bin

안드로이드 오픈소스 어플리케이션 블록

Mon, 10 Jun 2013 13:36:20 +0900

안드로이드 오픈소스 어플리케이션 블록

Software and AT commands for M2M Modules | M2MSupport.net

Mon, 14 Jan 2013 11:29:38 +0900

Software and AT commands for M2M Modules | M2MSupport.net

M2M:Integrated Chip set vs Module?

Mon, 14 Jan 2013 11:19:10 +0900

M2M:Integrated Chip set vs Module?:

There are 4 options to consider in developing a new device: An integrated device that supports the core functionality needed for your application. Advantages - no certification costs, proven performance, shortest time to market Disdavantages - higher per unit cost & limited flexibility in the functionality Examples - Typcial Deployment Range - 1 to 1000 Vendors - depends on application An end product is a standalone wireless product that can be integrated with other hardware to form an integrated device. Advantages - no certification costs, proven performance, short time to market Disdavantages - per unit cost Typcial Deployment Range - 1k to 10K Vendor - MultiTech’s Socket Modem www.multitech.com An integration with a module Advantages - lower per unit cost, flexibility in form factor, reduced operator certification (assuming the module is pre-certified by the operator) Disadvantages - certification costs (PTCRB - $20K-40K), operator certification may be required (typically no cost) Typical Deplotyment Volume - >10K Vendors - Cinterion, Telit, Sierra Wireless, Ericsson, Motorola, Enfora, Simcom An integration with a chipset Advantages - lowest per unit cost & flexibility in form factor Disadvantages - certification costs (PTCRB - $60-80k, Operator - up to $500k), long time to market 12-24 months & high level of wireless expertise is required for development Typical Deployment Volume - 1 million Vendors - Infineon, Qualcomm, Marvel, MedioTek, Texas Instruments, ST Ericsson, Freescale As you can see, it really depends on where you are with your business model, but there are options to meet every need. Also, I highly recommend contacting your operator to find out their requirements.

M2M:Integrated Chip set vs Module?

Mon, 14 Jan 2013 11:16:10 +0900

M2M:Integrated Chip set vs Module?:

Well, as with any technology someone owns the IP and you’ll need a license to develop with it. Most of the time its Qualcomm and you need to get a IP license to the technology you are trying to implement with (i.e. WCDMA) and the IP license usually requires a substantial up front cash investment (think millions) and/or a minimum order quantity. Honestly, unless you are close to or in “cell phone volumes” don’t even bother because by the time you subsidize the cost of the IP licensing, NRE for development, minimum orders, and everything else unless you are truly shipping 7 figure volumes you’ll end up losing money. Our firm has been in this space for a decade. 90% of our new customers always want to start with the chipset level and 99.5% of them change their mind once they handle the due diligence. I’ll throw some ball park numbers at you to show you why: IP Licenses: $1-$3 Million RF Certifications (Full FCC, PTCRB, then carrier certification): Approximately $1.3 Million Hardware Design NRE & Prototyping Costs: $300K-$1M depending on what you’re trying to build. Out of the hundreds of projects we’ve worked on in the past 10 years, only two have ever truly gone to an integrated chipset (base band design.) Really, by going with an integrated chipset you are doing exactly what Cinterion, Telit, Wavecom, and the rest of them have done. You are literally creating your own module and that gets really expensive really quick. Also your time to market is a lot slower as all the certifications take a lot of time. In order to go with an integrated chipset you need to have some very experienced engineers on staff or be willing to pay the NRE costs to sub out the work. Another issue is what type of integrated chipset are you looking at and is your run rate there to keep up with the end of life cycles because handset chipsets go EOL a lot quicker than other silicon. All in all, unless you are ready to spend about $5 Million and the next 10 months dealing with headaches I’d stay away from an integrated chipset.

Rands In Repose: The Process Myth

Thu, 03 Jan 2013 13:24:14 +0900

Rands In Repose: The Process Myth:

Process should be written by those who are not only intimately experiencing the pain of a lack of process, but who are also experts in the culture.

Using Symlinks in Windows Vista - How-To Geek

Wed, 28 Nov 2012 13:59:42 +0900

Using Symlinks in Windows Vista - How-To Geek:

C:\mklink /D C:\TestFolder C:\Users\Geek\TestFolder
symbolic link created for C:\TestFolder «===» C:\Users\Geek\TestFolde

Online Epoch Date/Time converter

Wed, 28 Nov 2012 10:08:07 +0900

Online Epoch Date/Time converter:

useful for calculating seconds since epoch

Fitt's Law

Wed, 31 Oct 2012 15:50:11 +0900

Fitt's Law:

This is a classic Fitts’s Law problem, and Fitts’s Law states that the ease of hitting a target is a function of both the size of the target and the distance to get there. So you want bigger targets on bigger displays, because there’s more distance for your pointer (in this case, your finger) to travel, but you can get away with smaller targets on a smaller display because there’s less distance to travel.

5 Ways Hardware Makers Are Hurting Windows 8 | Co.Design: business innovation design

Mon, 29 Oct 2012 10:01:49 +0900

5 Ways Hardware Makers Are Hurting Windows 8 | Co.Design: business innovation design:

To OEMs, it seems creating a family of products means nothing more than simply making a set of devices look similar. Hogwash. The reason Apple has been so successful is because its family of products operate better as a unit, with cross-platform features (iTunes, iCloud, iMessage, and so forth) that no competitor can rival. The experiences need to be designed together.

FAQ - implementing-rest - Frequently Asked Questions - Exploring the implementation aspects of the REST architectural style. - Google Project Hosting

Thu, 25 Oct 2012 12:15:32 +0900

FAQ - implementing-rest - Frequently Asked Questions - Exploring the implementation aspects of the REST architectural style. - Google Project Hosting

The web kills off other protocols because it has something most protocols lack

Tue, 23 Oct 2012 10:33:47 +0900

The web kills off other protocols because it has something most protocols lack:

The web kills off other protocols because it has something most protocols lack: a simple way of labeling every available item. Every resource on the Web has at least one URI. You can stick a URI on a billboard. People can see that billboard, type that URI into their web browsers, and go right to the resource you wanted to show them. It may seem strange, but this everyday interaction was impossible before URIs were invented.

"the easier you can communicate, the faster change happens."

Mon, 22 Oct 2012 18:26:40 +0900

“the easier you can communicate, the faster change happens.”

- Entries tagged with “REST” » » Untangled

Create a Presentation Your Audience Will Care About - Nancy Duarte - Harvard Business Review

Fri, 19 Oct 2012 13:41:04 +0900

Create a Presentation Your Audience Will Care About - Nancy Duarte - Harvard Business Review:

Generating ideas is the easiest part of creating a presentation. The hard part is deciding what to keep. Many of your ideas may be fascinating or clever, but you can’t squeeze them all in — and no one wants to hear them all, anyway.

Average Size of Mobile Games for iOS Increased by a Whopping 42% between March and September, Says ABI Research - FierceWireless

Fri, 19 Oct 2012 13:35:46 +0900

Average Size of Mobile Games for iOS Increased by a Whopping 42% between March and September, Says ABI Research - FierceWireless:

The flipside of the increasing file-sizes is that the internal storage of smartphones and tablets is becoming a scarcer resource, as the device capabilities struggle to keep up with the requirements of apps and mobile content. Markkanen predicts, “Especially the consumers with 16GB devices are likely to become more conscious about what apps to keep and what to uninstall, so the developers’ bar to impress will be getting even higher than it is now. This could also speed up the adoption of the mobile cloud as a storage remedy quite significantly.”

.NET Crash: Managed Heap Corruption calling unmanaged code - If broken it is, fix it you should - Site Home - MSDN Blogs

Wed, 10 Oct 2012 18:55:22 +0900

.NET Crash: Managed Heap Corruption calling unmanaged code - If broken it is, fix it you should - Site Home - MSDN Blogs:

The most common reason for managed heap corruption is bad PInvoke’s. We pass in a buffer to a native (non .net) API which the native API is supposed to return some data in, but the buffer is too small for the results. Since the API has no clue about .net and no clue about the boundaries, it just happily writes its data.

The moral of the story? First off, make sure that if you call an API and one of the parameters is an [out] parameter you need to make sure that your buffer is large enough to store the result. Secondly, if you get this kind of issue, the first thing you should look for in the code is calls to unmanaged API’s.

Tracing Win32 API While Debugging a Process

Wed, 10 Oct 2012 18:16:13 +0900

Load an executable or attach WinDbg to an existing process and use logexts debugging extension (in output below all API parameters and return values are omitted for visual clarity): 0:001> !logexts.loge
0:001> !logc e *
All categories enabled.
0:001> !logo e d Debugger Enabled Text file Disabled Verbose log Enabled
0:001> g

Visual Studio 2005 has compatibility issues with Windows7(64 bit)

Wed, 10 Oct 2012 11:23:59 +0900

Visual Studio 2005 has compatibility issues with Windows7(64 bit):

you need to install the following below in the following order to get VS 2005 running properly on Windows 7.

1. VS 2005 SP1

- http://www.microsoft.com/download/en/details.aspx?DisplayLang=en&id=5553

2. Visual Studio 2005 Service Pack 1 Update for Windows Vista

- http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=7524

Code inspection & defects

Tue, 09 Oct 2012 12:14:19 +0900

In 1976, a landmark paper by Michael Fagan[2] found that code inspections can remove the overwhelming majority of code defects (up to 90%); no other quality assurance technical comes close.

[2] Fagan, Michael, “Design and Code Inspections to Reduce Errors in Program Development,” IBM Systems Journal 15, no. 3: 182–211.

John Bently (Programming Pearls) on work-life balance

Mon, 08 Oct 2012 17:30:48 +0900

How can one achieve a work-life balance? How can one keep professional life from dominating everything?

Set inviolable rules (the easy part) and then don’t violate them (always much harder). In the mid-1990s, I was simultaneously involved in rushing a product to market and being the full-time single dad of a middle-school son. I made a point to take my son to school every morning, to pick him up most afternoons, and to have dinner with him and lots of other “quality time” every evening. At the slight expense of my pulling all-nighters on a weekly-or-more basis, everything worked out okay: We shipped the product without delay, it won national recognition, and my kid turned out okay (except, of course, for becoming a software engineer). A few months after the product was shipped, my company cancelled it, and a few years later, I had a heart attack at age 46. Since then, I’ve been willing to draw much more reasonable rules and abide by them, well, like my life depended on them. Think very, very hard about the word life in the phrase “work-life balance!”

(Source: Making it Big in Software: Get the Job. Work the Org. Become Great )

Playbor = Play + Labor

Wed, 03 Oct 2012 12:33:27 +0900

Playbor = Play + Labor:

Gamification in the enterprise need to be voluntary and autonomous or it may turn out to be an ‘electonic whip’.

http://latimesblogs.latimes.com/lanow/2011/10/steve-lopez-disney-responds-to-electronic-whip-criticism.html