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/s and above bit rate, the MPEG-2 is significantly better than the MPEG-1. The MPEG-2 is backward compatible, that is, all standard-compliant MPEG-2 decoder can also play the MPEG-1 video stream normally. MPEG-2 technology is also applied in the HDTV Transmission System. MPEG-2 light transport for DVD-Video, now most of the HDTV (hd TV) also uses MPEG-2 encoding, resolution up to 1920x1080. Because of the popularity of MPEG-2, originally prepared for HDTV MPEG-3 finally declared to give up. A MP

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the hidden function so that it will not be hidden immediately)Timeout = setTimeout (function () {/* set the hidden code here */}, 500 );Only provide ideas. You can write your own code ......Var MyTimeout;$ (Document). ready (function (){Test ();});Function Test (){$ ("# Myaccount" ).css ({Background: "# FCC ",Width: 120,LineHeight: "36px"});// You can hide it first$ ("# Myaccount-menu" ).css ({Background: "# CFC ",Height: 0,Width: 120,LineHeight: "36

KBC petro-sim suite v4.0 SP2-ISO 1cd (Refining Process Simulation Software)KBC's petro-SIM software combines graphical Process simulators with KBC's advanced industrial technology and rigorous refinery and petrochemical plant process models based on hysys. an advanced simulation tool for the refinery interface. Petro-Sim can establish its own test database based on the laboratory data or the available commercial crude oil database with over 400 types of international oil products. QQ: 16264558 P

The AP and BP of the mobile phone can refer to the hardware and software based on the context. 1) Most mobile phones contain two processors. The operating system, user interface, and application are all executed on the application processor (AP). The AP generally uses the cpu Of the ARM chip. The Mobile Phone RF communication control software runs on another separate CPU, which is called baseband processor (BP ).The main reason for putting RF functions on BP is that RF control functions (sign

Frequency-hopping spread spectrum; FHSS receives signals transmitted by narrow-frequency carriers of a specific type at both ends of synchronization and at the same time, for a non-specific receiver, the hop signal generated by FHSS is also called pulse noise. FHSS signals can be specially designed to avoid noise or non-repetitive channels of one-to-one channels, and these frequency hopping signals must comply with fcc requirements, the maximum interv

between F1 and F2 is exactly equal to the receiving frequency of EUT, and F2-F1= 3 MHz, 4 MHz, or 5 MHz. The error rate of the tester, which must be less than 0.1%. (6) maximum input level The saturation level of the bluetooth receiver. The initial state is the same as 1.1 (3), and EUT works at low, medium, and high frequency points. The tester sends a dh1 group signal with a net load of pn9 and controls its transmit power so that the level at the entrance of the EUT receiver is-20dbm. The erro

Why 802.11ac will kill the 5 GHz Wi-Fi band I took the opportunity during a recent briefing call with Qualcomm atheros (QCA) about its new 802.11ac devices to dig into some of the technical details behind 802.11ac. I'm gglad I did, because I learned a fewThings about the new higher-speed wireless standard that shoshould be more widely known. As you may know, 802.11ac is5 GHz onlyStandard. The reason for this is that 11ac needs to use lots of 20 MHz wide channels to achieve its higher bandwidt

the client and the access point is connected in the air. Air communication is processed through L2 QoS Based on the 802.11e standard. 4. Downstream and Upstream There is a significant difference between downstream from the access point to the client and upstream from the client to the access point. Currently, most Wi-Fi air technologies only provide downstream enhancement. 5. uplink and downlink speeds The only widely accepted rate is the transmission rate. However, the asymmetric rate is typic

technologies only provide downstream enhancement. 5) Tx rate to Rx Rate The only widely accepted rate is the transmission rate. However, the asymmetric rate is typical, And the sending rate seen on our connectable client does not necessarily represent the receiving rate. This is also evidenced in access point/infrastructure because it proves that there is a separate Tx rate and Rx rate in the Wi-Fi world. 6) Same sending power for all rates Setting an access point to the "maximum power" does no

interface. After the FCC defines and unifies the RJ interface, all major manufacturers have adopted compatible RJ interfaces, and Integrated Wiring has started to develop rapidly. Currently, seven types of interfaces do not have uniform interface standards, and products of different manufacturers cannot be compatible, this has a certain impact on the popularity of 7 types of products. Fifth, the application is not popularized The Research of technolo

considering coverage, the network structure and the dynamic changes in environmental factors may also make it impossible for a carrier to guarantee services in a local or roaming network.Second, positioning accuracy. Mobile positioning should be based on user Service needs to provide different precision services, and can provide users with the right to choose precision. For example, the U.S. FCC introduced positioning accuracy within 50 meters of the

How to intercept the content to get the image address?? Meat content: Maximum output power 350W Rated Power 300 Power version INTEL ATX12V 1.3 Version Scope of application Special power for Internet cafesSupports INTEL945, 965 Express chipset, Intel Core dual Core processor Interface description Free combination interface with 20pin and 24pin

; Strpath = "test. mdb "; Try { Conn =Server. Createobject ("ADODB. Connection "); Conn. connectionstring = "provider = Microsoft. Jet. oledb.4.0; DataSource = "+ server. mappath (strpath ); Conn. open (); } Catch (e ){ Response. Write ('Style = "font-size: 12px; font-weight: bold; Border: 1px solid#006; padding: 6px; Background: # FCC "> database connection error. Check the connection string.! Response. End } Rs = server. Createobject ("ADODB. recor

from pain points between the two legs. Main challenges 1. Non-distance. A 30-bit-high hybrid structure was built before, and the two-point architecture was relatively low. 2. dry weight. The entire 2G memory segment is close to-70dbm or above. 3. Daily rack setup is difficult. There are no devices, platforms, and other devices in combination with the location of the device.Basic Strategy 1. One reflection communication. In fact, this is not a problem. All users who know nothing about communicat

Change the focus acquisition style of the text box Copy codeThe Code is as follows: First, add a style named focus in css.The css code is as follows:Copy codeThe Code is as follows:. focus {Border: 1px solid # f00;Background: # fcc;} Then add the get and lose focus events for the text box.Copy codeThe Code is as follows: $ (function (){$ (": Input"). focus (function (){$ (This). addClass ("focus ");}). Blur (function (){$ (This). removeClass ("focus "

At present, the wireless access network technology is still developing very rapidly. Many people may not understand the development of the wireless access network technology. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. Introduction Currently, the wireless access network technologies used for indoor computer data communication mainly include Bluetooth, infrared, and HomeRF. From the transmission rate, the

The development of WLAN Access technology is very rapid, and it also faces many challenges. So I have studied some issues that require special attention in the development of WLAN Access technology. I would like to share them with you here and hope they will be useful to you. Because WLAN Access technology can be used without FCC licenses, the application of WLAN Access technology has been greatly promoted, so WLAN Access technology has also been rapi

: Because your server will save important files and more expensive items on the network, you need to consider security issues. The server chassis should be locked to prevent unauthorized dismounting.Authentication: select a chassis and power supply that meets the requirements of your environment. Typical certifications include FCC, UL, and CE.MemorySince data passing through the server memory is very important at any time, it is wise to choose a memor

Shift Keying DBPSK) modulation method. Because the signal quality keeps decreasing with the propagation distance, we have to adopt a compromise strategy in terms of speed and distance. Radio waves that spread in the air quickly decay, much greater than RF signals transmitted through cables. The FCC rules control the use of the 2. 4 GHz ISM band and the 5 GHz UNII band. 2.4 GHz ISM refers to the 2.4835 MHz from 2. 4 GHz to 83.5 GHz, serving as an indu