[工作點滴] Looking for solid developer

Recently, I become very busy due to take over the tasks from other site. The original coding things are still there and so I start looking for outstanding guy to join us. The first month, I try to have some candidates from my colleagues and myself’s database but in vain. Now I shift this job to head hunter and start some interview. I’ve interviewed lots of people in my first job and second one. It’s much more interesting to interview with the guys from head hunter at this moment. Why? Lots of the factor would effect which kind of developer you want. ...

2013-06-12 · 1 分鐘 · 369 字 · ChenFu Kuo

尋找紮實的開發者:我的招募與面試心法

最近因為開始接手其他站點的任務,生活變得極度忙碌。原有的開發任務依然存在,因此我開始尋找優秀的夥伴加入我們。第一個月,我試著從同事推薦或我的人才庫中尋找,但無功而返。現在我將這個任務委託給獵頭公司,並開始進行面試。 ...

2013-06-12 · 2 分鐘 · 648 字 · ChenFu Kuo

[產業觀察] The necessity of PoC on ccHDtv

The PoC is power over cable and it’s just like the PoE on IP camera. I met a supplier that they can provide the PoC solution on the ccHDtv system. Originally, I thought it’s a useful and necessary function but it’s not at all now. Why? The CCTV is always starting from system point of view but not just the device only like the cellphone. The first factor is that the analog CCTV infrastructure has already built over there for a long time. That means the power cable is existing and reliable. So it is not necessary to equip the PoC except the project a brand new installation. The second, the strategy of the ccHDtv alliance is to replace the traditional analog surveillance system from VGA to HD but not to compete with the existing IP surveillance system. We can totally confirm that it’s not necessary to equip PoC on DTV camera. The others factor like the cost increase, design complexity increase and regulation to pass. ...

2013-05-02 · 1 分鐘 · 195 字 · ChenFu Kuo

[科技新知] ccHDtv study

What is ccHDtv? Closed Circuit HD TV (ccHDtv) is a newly developed solution for transmitting full HD digital video in a surveillance system. The core concept of ccHDtv is to deliver high definition video using digital TV (DTV) transmission. With ccHDtv, high definition digital video can be transmitted easily over coaxial cables, twisted pairs, or simply over the air. Multiple 1080p30 and 1080p60 video streams can be easily transmitted using ccHDtv over a single 3C2V/RG59 cable up to a length of 500 meters without any repeater. ...

2013-04-26 · 2 分鐘 · 986 字 · ChenFu Kuo

ccHDtv 研究心得

什麼是 ccHDtv? 閉路高畫質電視 (ccHDtv) 是一項新開發的解決方案,旨在監控系統中傳輸全高畫質 (Full HD) 數位影像。其核心概念是利用數位電視 (DTV) 傳輸技術來傳遞高畫質影像。透過 ccHDtv,數位高畫質影像可以透過同軸電纜、雙絞線甚至是無線網路輕鬆傳輸。多路 1080p30 或 1080p60 的影像串流可以經由單一 3C2V/RG59 電纜,在不需中繼器的情況下傳輸長達 500 公尺。 ...

2013-04-26 · 1 分鐘 · 381 字 · ChenFu Kuo

[工作點滴] wireless module development newbie

I’ve started collecting the information around the end of 2010 because the wireless technology advanced to much higher bandwidth for multimedia streaming. There are two conditions of the development that I thought. 1. To develop the whole wireless part by ourselves. 2. To buy the module directly from the supplier. But some important factors that make me just ‘collect information’ at that moment. For 1, the expense is very horrible. - We have to pay chip vendor for NRE. - We are new to be the player and we have no credit to the chip vendor. - We have no equipment and we have to invest a lot to do it. - There are lots of tasks need for the regulation. To sum up, this is a money game for surveillance company and we see no market at that moment. For 2, we could leverage a lot tasks to supplier but we still have to prepare equipment to verify the whole system and get the experience of the regulation. However, the module cost and performance ratio could not meet our requirement. It is quite challenge for me to persuade my boss to do it. So what I can do is just keep attention on wireless technology. Until now, I have the chance to do the development finally. Although I’m newbie for wireless, it’s not too hard to enter this area. The reason is the technology become much mature and we can make it work even we do not know much about wireless. So, let’s just do it. The module I use is based on Atheros AR6103 and AR6003. The driver of these two chips are similar. The documents I study is are mainly from Atheros. I also reference the IEEE specification and search on Google. ...

2013-04-23 · 2 分鐘 · 662 字 · ChenFu Kuo

[雜七雜八] Growth road

I found an interesting comic that made by Gavin Aung Than. The philosophy is suitable for every creative work.http://zenpencils.com/comic/90-ira-glass-advice-for-beginners/

2013-04-17 · 1 分鐘 · 19 字 · ChenFu Kuo

[雜七雜八] I'm a singer

There is a very hot TV program which name is “I’m a singer” in China. I never saw this program before because there are already lots of similar program in the world. At the first, I could not understand why this program catch so many eye balls. My memory was stay at the program that is made by Taiwan’s media years ago. Even it’s hot at season one, it become colder and colder till now. At least, I do not have that passion to see this kind of show again. So it cause my curiosity why it success at this moment in China. After searching the information on the internet and spent hours to see the last episode of season one last weekend, I start to know why it become so famous. Hunan TV bought the copyright from Korea and the success story is not only just bought the copyright. The factor that make it

2013-04-15 · 1 分鐘 · 155 字 · ChenFu Kuo

[雜七雜八] Bitcoin build on Ubuntu 12.04

I started to pay attention on the Bitcoin that is from a news that discussed why bitcoin become strengthening. After weeks study and observation, I thought the bitcoin could be one of the real monetary in future. More links are as following. Bitcoin official site -> http://bitcoin.org/en/ Bitcoin wiki -> http://en.wikipedia.org/wiki/Bitcoin Bitcoin howto in Chinese -> http://saving.cc/bitcoin/ The following article is quite earlier in Taiwan’s news and it is also interesting. http://techorange.com/2011/05/22/bitcoin-p2p-curenncy-dangerous/ Two years later today, the bitcoin’s currency rush to 1BT:90USD because of the crisis of Cyprus. ...

2013-04-09 · 1 分鐘 · 280 字 · ChenFu Kuo

[工作點滴] the study of webrtc and sip

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2013-04-08 · 1 分鐘 · 2 字 · ChenFu Kuo