FloodIt with AI

It is a variant of FloodIt.
You can now fight with AI.
Very fun!

Application Folder

Application Folder란? 안드로이드의 기본 폴더 지원이 너무 미약하여 바탕화면에 보다 차별화된 폴더 기능을 가미해 주는 애플리케이션입니다.  폴더에는 애플리케이션, 연락처, 북마크 등등이 들어 갈 수 있습니다.
(What is Application Folder? Folder from Android is far from fancy, so I implemented this application. With Application Folder, you can make another type of folders that are much more customizable. Application Folder can contain following types; 1) Applications, 2) Contacts, 3) Bookmarks)

지원 운영체제: Android 2.1 또는 이상
(Required OS: Android 2.1 or higher)

미리 보기 & 사용법
(Snapshots & Howto)

폴더 편집기(Folder editor)

Battery Widget

Another Android application. Display battery information and estimation time in application mode, in widget mode, and in notification bar. I plan to revise this as a live wallpaper, I will finish it until this month. You can find it at Google market

WiFi Picker

Description: Help to scan nearby hotspots and to connect one with GUI. Unlike an default WiFi configuration activity, this application shows various information about hotspots

Interface: single tap on hotspot for hotspot menu, long tap on empty area of wall for exposing underlying hotspots, fling on empty area of wall for rescanning, shaking for rescanning, [menu] key for settings.

Type: Application, 1 X 1 widget (Platform: Android 1.6 or higher, Language: English, Korean)

Screen shots:

Please leave your comments…

Revision of 3D FloodIt

  Looks better? Should be!

3D Flood It

FloodIt: Flood the whole board with one color within the allowed steps. You start from the top left corner and progress by selecting one of the colored balls on the left. – in LABPIXIES. Yes, this addictive game is revised as a 3D version for Android. For simplicity, I used not OpenGL, but 2D graphics APIs for 3D vision like followings. 2D = traslate{project{rotate{scale{3D}}}}

WiFi Helper

Are you boring with texted-based list selection even with highly expensive smart phones? Do you want to select a good AP considering signal strength as well as channel capacity with finger tips? This is for you! All you have to do is just to “Touch” on a oval.

Keep Wi-Fi

Purpose:	Allows your device to keep the Wi-Fi radio awake even if the screen goes off.
Requirement:	Android 1.5(Cupcake) or higher
Application type:	AppWidget (1x1, 1x2)
Description:	1. toggling two modes 2. in 1x2 mode, SSID and IP are displayed when Wi-Fi is connected
Snapshots:	default mode (1x1) never sleep mode (1x1) default mode (1x2) never sleep mode (1x2)

Revisiting H.264 Parser

Here is a visual studio project for the previous post.
This is not final version, but you can test it. The zip file contains source files and  a sample clip.
if you have a question, leave a comment.

Complier: Visual studio 2010 Lang.: C++(H.264) with CLR(GUI) Current status: Navigate, PES View, TS View, ES View(just NAL) Do not use for commercial purpose.

H.264 Parser

This is C++ source code of "H.264 video parser" which parses H.264(14496-10) video format encapsulated in TS(13818-1) format. You can download it from here.
I use only standard C++ STL, so you can understand the code with easy. I hope this is useful.

This sample code shows how to use the C++ classes for generating meta information of contents.

Using "vector" C++ STL class

Let's define as followings

template<typename __Tp> class __vector_based : public std::vector<__Tp>
{
public:
   typedef typename std::vector<__Tp>::iterator iterator;
   typedef typename std::vector<__Tp>::reverse_iterator reverse_iterator;
public:
   __vector_based() { };
   virtual ~__vector_based() { clear(); };
public:
   virtual void clear() {
      iterator i;
      for (i = std::vector<__Tp>::begin(); i != std::vector<__Tp>::end(); i++)
         delete *i;
      std::vector<__Tp>::clear();
   };
   __Tp at(int __i)
   {
   if (__i < 0)
      return at(int(std::vector<__Tp>::size()) + __i);
   else if (__i >= int(std::vector<__Tp>::size()))
      return at(__i - int(std::vector<__Tp>::size()));
   return std::vector<__Tp>::at(__i);
   };
   __Tp operator[] (int __i) { return at(__i); };
protected:
};

Photos at Las Vegas 2010

From QoS to QoE...

질문: 사용자가 A%만큼 패킷을 적절히 받았을 경우, 과연 사용자는 A%만큼 비디오를 봤다고 할 수 있는가?
현재까지는 서비스 공급자들은 이러한 가정으로 서비스를 제공하고 있으며 또한 이를 바탕으로 과금을 하고 있다.
즉, 사용자가 받은 만큼 데이터 요금을 부과하는 것이다.
하지만, 다음과 같은 경우를 생각해 보자.
하나의 프레임은 10개의 패킷으로 구성되었다고 할때, 하필 사용자는 첫번째 패킷을 못받고 나머지 9개를 받았다.
이런 경우 공급자는 9개 전송된 패킷에 대해서 과금을 한다. 그러나 사용자는 9개 패킷에 해당되는 비디오를 봤을까?
잘 알다 시피 비디오는 첫번째 패킷을 못 받으면 나머지는 무용지물이다. 즉, 사용자는 그림 한 조각도 못 본 것이다.
이렇기 때문에 우리는 멀티미디어 서비스에서 QoS 뿐만 아니라 QoE도 고려해야 한다.
그렇다면 어떻게?

Require: H.264 decoder, client/server streaming model, client feedback for packet loss.

Registered patents

1. An efficient streaming technique according to variation of environments of contents streaming
   Application number: 2007-10-25/2007-0107668, Patent number: 2009-10-28/0925507
   Country: KR
2. Method for forming IDR unit for trick play, and Trick play system and method using that
   Application number: 2007-10-04/2007-0099982, Patent number: 2009-08-20/0914318
   Country: KR
3. Fractional caching method and adaptive contents transmitting method using the same
   Application number: 2006-09-28/2006-528905, Patent number: 2009-01-13/7478200
   Country: US
4. The cluster based streaming system and method using multiple description coding
   Application number: 2006-04-21/2006-0036280, Patent number: 2008-01-28/0797389
   Country: KR
5. Display Method in Small Terminal
   Application number: 2006-03-22/2006-0026254, Patent number: 2007-12-10/0786386
   Country: KR
6. Multiple streaming service method and apparatus for thereof
   Application number: 2006-08-22/2006-0079492, Patent number: 2007-10-25/0772195
   Country: KR
7. Fractional caching method and adaptive content transmission method using the same
   Application number: 2005-10-11/2005-0095554, Patent number: 2007-06-26/0734629
   Country: KR
8. Intermediate data based video/audio streaming method
   Application number: 2000-05-18/2000-574703, Patent number: 2005-03-29/6873625
   Country: US
9. Apparatus and method for streaming MPEG-1 data
   Application number: 2000-05-18/2000-575494, Patent number: 2004-08-17/6779041
   Country: US
10. Apparatus and Method for streaming of MPEG-1 data
    Application number: 1999-05-21/1999-0018490, Patent number: 2002-09-03/0352981
    Country: KR
11. Method for video/audio streaming based on intermediate data
    Application number: 1999-05-21/10-1999-0018489, Patent number: 2002-04-29/0336280
    Country: KR

My albums

All photos with my wife

Click any album for more photos

International papers

1. Efficient Post-Video Processing for Thin Display Devices
   Jin-Hwan Jeong and Hag-Young Kim, "Efficient Post-Video Processing for Thin Display Devices," in International Conference on Consumer Electronics 2010, Jan. 2010
2. Cable-TV-Based Home Video Streaming System: Practice and Experience
   Jin-Hwan Jeong, Yong-Ju Lee, Song-Woo Sok, Hag-Young Kim and Yoo-Hyun Park, "Cable-TV-Based Home Video Streaming System: Practice and Experience," in IEEE Network, vol. 23, no. 6, November 2009
3. An Efficient Management and Automatic Failover on a Large-Scale Cluster Monitoring System
   Choon Seo Park, Song-Woo Sok, Jin-Hwan Jeong, Yong-Ju Lee, Chang Soo Kim, Ok-Gee Min, Hag-Young Kim, and Jae Soo Yoo, "An Efficient Management and Automatic Failover on a Large-Scale Cluster Monitoring System," in ICSSSE, Oct. 2009
4. Portable Device-Centric Streaming Service
   Jin-Hwan Jeong, Hag-Young Kim, and Eunah Kim, "Portable Device-Centric Streaming Service," in Future Multimedia Networking, pp. 224-229, June 2009
5. Hint File-Based Implementation of Contents Navigation Methods for Set-Top Box
   Jin-Hwan Jeong, Yong-Ju Lee, Hag-Young Kim, and Yu-Hyeon Park, "Hint file-based implementation of contents navigation methods for set-top box," in IEEE Transactions on Consumer Electronics, Vol. 54, Issue 2, pp. 896-901, May. 2009
6. Hint File-Based Implementation of Contents Navigation Methods for Set-Top Box
   Jin-Hwan Jeong, Yong-Ju Lee, Hag-Young Kim, and Myung-Joon Kim, "Hint file-based implementation of contents navigation methods for set-top box," in International Conference on Consumer Electronics, pp. 1-2, Jan. 2009
7. Trick Play Method for HD H.264 Set-Top Box
   Jin-Hwan Jeong, Yong-Ju Lee, Hag-Young Kim, and Myung-Joon Kim, "Trick Play Method for HD H.264 Set-Top Box," in IEEE Transactions on Consumer Electronics, Vol. 54, Issue 2, pp. 817-822, May. 2008
8. UMOST : Ubiquitous Multimedia Framework for Context-Aware Session Mobility
   Yong-Ju Lee, Choon-Seo Park, Jin-Whan Jeong, Hag-Young Kim, and Cheol-Hoon Lee, “UMOST : Ubiquitous Multimedia Framework for Context-Aware Session Mobility,” in International Conference on Multimedia and Ubiquitous Engineering, pp. 3-8, April 2008
9. Trick Play Method for HD H.264 Set-Top Box
   Jin-Hwan Jeong, Ok-Gee Min, Yong-Ju Lee, Choon-Seo Park, Hag-Young Kim, and Myung-Joon Kim, "Trick Play Method for HD H.264 Set-Top Box," in International Conference on Consumer Electronics, pp. 1-2, Jan. 2008
10. Cooperative Multimedia Playback Architecture for Pervasive Cellular Phones
    Jin-Hwan Jeong and Hag-Young Kim, "Cooperative Multimedia Playback Architecture for Pervasive Cellular Phones," in International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, pp. 204-208, Nov. 2007.
11. On Multiple Description Streaming with Cluster-based Server
    Yuhyeon Bak, Jinhwan Jeong, Yongju Lee, Kapdong Kim, Changsoo Kim, Hagyoung Kim, and Kywonsok Kim, “On Multiple Description Streaming with Cluster-based Server,” in Asia-Pacific Communications Conference, pp. 1-5, Aug. 2006
12. The design of digital items server for processing multi DI clients on ubiquitous environments
    Choon Seo Park, Jung-Keun Kim, Jin-Hwan Jeong, YongJu Lee, Ok-Gee Min, and Hag-Young Kim, "The design of digital items server for processing multi DI clients on ubiquitous environments," in ICACT, pp. 4, Feb. 2006
13. A video streaming system for mobile phones: practice and experience
    Hojung Cha and Jongmin Lee, Jongho Nang and Sung-Yong Park, Jin-Hwan Jeong, Chuck Yoo and Jin-Young Choi, "A Video Streaming System for Mobile Phones: Practice and Experience," in Wireless Network, Vol. 11, No. 3, pp. 265-274, May 2005
14. Software-Based Video/Audio Processing for Cellular Phones
    Jin Hwan Jeong and Chuck Yoo, “Software-Based Video/Audio Processing for Cellular Phones,” in Telecommunication Systems, Vol. 28, Num. 2, pp 185-210, Feb. 2005
15. A Server-centric Streaming Model Jin Hwan
    Jeong and Chuck Yoo, “A Server-centric Streaming Model,” in NOSSDAV 2000, pp 25-34, North Carolina, USA, June 2000

The first item

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