Huadong Technology announced that the board of directors decided to transfer the 29.9% equity of its Feidong Lighting to Philips Electronics China Ltd., the major shareholder of Feidong Lighting. It is understood that Feidong Lighting Co., Ltd. was jointly established by Philips Electronics China Co., Ltd. and East China Science and Technology in 1990. Among them, Philips Electronics China Co., Ltd. accounted for 70.1%, and East China Technology Co., Ltd. accounted for 29.9%. Feidong Lighting Co., Ltd. mainly produces energy-saving fluorescent lighting products. After 17 years of participation, Huadong Science and Technology has always regarded Feidong Lighting as a “cash cowâ€. It is somewhat surprising to suddenly choose to quit.
At yesterday's shareholders meeting, the company's chairman Zhao Jingcheng explained that as of the first half of last year, the company signed an agreement with Feidong Lighting, committing to contribute to the investment income of Huadong Science and Technology 5 million yuan each year. Due to fierce competition in the fluorescent lamp market in the past two years, the profit of Feidong Lighting has declined. In the second half of last year, when the two sides negotiated profit distribution, Feidong Lighting only promised to earn 2 million to 3 million yuan of profit from Huadong Technology.
In fact, according to the 2007 semi-annual report, Feidong Lighting's net profit for the first six months of this year was 3.746 million yuan, and the investment income contributed to Huadong Science and Technology during the reporting period was 2.5 million yuan. The original annual investment income of 5 million yuan was reduced to 2.5 million yuan. After comprehensively considering various factors and earning a full pot, Huadong Technology chose to withdraw from this “cash cowâ€.
In addition, the company's secretary-general Wu Hualin revealed that the opt-out of Feidong Lighting has kept pace with the plan at the beginning of this year. At the beginning of this year, the company proposed a plan of “slimming and strengthening the body†to eliminate non-mainly non-controlling non-profit industries. The original company advocated diversified development in order to avoid the risks brought by the single operation to the company's development. In 2007, considering that East China's main business is more dispersed and its profitability is not strong, the company chooses to withdraw funds and concentrate on developing its main business with touch and light source as its core.
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RJ45 port editing
1. Origin:
2. The name RJ stands for the registered jack and is the USOC (universal service ordering codes) code of bell system. USOC is a series of registered sockets and their wiring mode, which are developed by bell system to connect the user's equipment to the public network. FCC regulations control the application of this purpose. The FCC (Federal Communications Commission) issued a document on behalf of the U.S. government to specify RJ11.
3. RJ11 is the common name of the connector developed by Western Electric Co. Its shape is defined as a 6-pin connecting device. Originally called wexw, where x means "active", contact or needle. For example, we6w has all six contacts, numbered from 1 to 6. The we4w interface only uses four pins, the outermost two contacts (1 and 6) are not used, and we2w only uses the middle two pins. For RJ11, the information source is contradictory. It can be a 2 or 4-core 6-pin connector. What's more confusing is that RJ11 is not only used to represent the 6-pin connector, it also refers to the 4-pin version.
4. RJ45 and RJ11: different standards, different sizes
5. Due to the different sizes of the two (RJ11 is 4 or 6-pin, RJ45 is an 8-pin connection device), it is obvious that the RJ45 plug cannot be inserted into the RJ11 socket. However, it is physically feasible (RJ11 plug is smaller than RJ45 jack), which makes people think that they should or can work together. It's not. It is strongly recommended not to use RJ11 plug for RJ45 socket.
â’ because RJ11 is not internationally standardized, its size, insertion force, insertion angle, etc. are not in accordance with the international standard connector design requirements, so interoperability cannot be guaranteed. They even cause damage to both. Since the RJ11 plug is smaller than the RJ45 socket, the plastic parts on both sides of the plug will damage the metal pin of the inserted socket.
RJ - 45 port is our most common port, it is our common twisted pair Ethernet port
Because twisted pair is mainly used as transmission medium in Fast Ethernet, RJ-45 port can be divided into 10Base-T network RJ-45 port and 100base TX network RJ-45 port.
Among them, the RJ-45 port of 10Base-T network is usually identified as "eth" in the router, while the RJ-45 port of 100base TX network is usually marked as "10 / 100btx". This is mainly due to the fact that most products of Fast Ethernet router still adopt 10 / 100Mbps bandwidth adaptive.
The left figure shows the RJ-45 port of 10Base-T network, while the right figure shows the RJ-45 port of 10 / 100base-tx network. In fact, the two RJ-45 ports are exactly the same in terms of the port itself, but the corresponding network circuit structure in the ports is different, so they can not be connected casually.
Definition of RJ45 interface pin signal
Ethernet 10 / 100Base-T interface:
1 TX + tranceive data +
2 TX - tranceive data -
3 RX + receive data +
4 N / C not connected
5 N / C not connected
6 RX - receive data
7 n / C not connected
8 N / C not connected
Ethernet 100base-t4 interface:
1 TX_ D1 + tranceive data +
2 TX_ D1 - tranceive data
3 RX_ D2 + receive data +
4 BI_ D3 + bi directional data +
5 BI_ D3 bi directional data
6 RX_ D2 - receive data
7 BI_ D4 + bi directional data +
8 BI_ D4 bi directional data
Note: RJ45 interface adopts differential transmission mode, TX + and TX - are a pair of twisted pair, which can reduce interference when twisted together.
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