Tv Lcd
Must read before buying in six arguments detailed LCD TV – LCD, TV, Flat Panel – HC Network Appliance Industry
As prices fall
LCD TV
Approaching, we have already entered the family of ordinary consumers. However, how to buy a bed of roses LCD TV, is not
Promotions
Who Huyou, let to buy home stuff worthy of those who pay money, may not the average consumer can do it! In fact, this is not difficult, following Xiaobian home on the grid for our web users a comprehensive brief which should have the knowledge. 11, input terminal
LCD TV input terminal is the interface to receive signals, the receiving terminal allows full LCD TV and other devices to connect easily. Standard video input (RCA): also known as the AV interface, usually in pairs of the white and yellow audio interface, video interface, it is usually RCA (commonly known as the Lotus head) to connect, only to use with Lotus Standard AV cable head connecting with the corresponding interfaces can be. AV interface separation of audio and video transmission, which avoided because the audio / video mixing interference caused by decreased image quality, but because of AV transmission interfaces is still a luminance / chrominance (Y / C) video mix signal, still need to display its bright / color separation and chroma decoding can imaging, this kind of mixing process of re-separation will inevitably result in
Color
Loss of signal, color signal and luminance signal will be a great opportunity to interfere with each other and thus affect the final output image quality. AV also has a certain vitality, but because of its own Y / C mix this insurmountable disadvantage can not limit the number of occasions to pursue the use of vision. S Video Input: S-Video specific full name in English is called SeparateVideo. In order to achieve better video quality, people began to search for a more efficient and higher quality HD video transmission, which is the current heyday of the S-Video (also known as two component video interface). SeparateVideo meaning is to separate the Video signal transmission, which is based in the AV interface will chroma signal C and luminance signal Y separated, each with a different transmission channels, it appeared and developed in the late 90s last century often standard 4-core (excluding audio) or the extended seven core (including audio). With S-Video Interface
Graphics
And video equipment (such as analog video capture / editing card TV and quasi-professional
Monitors
TV card / TV box and video projection equipment, etc.) currently has more common, compared with the AV interface, not carried out because of its Y / C hybrid transmission thus, no further separation and decoding bright colors, and use separate transmission channels video equipment in large part to avoid the crosstalk signal generated within the image distortion, greatly improved image clarity. However, S-Video still be two-way
Color
Signal (CrCb) mixed the way color signals C, for transmission and then decoded in the display device within the Cb and Cr for the processing, it will bring a certain number of signal distortion caused by the loss (this distortion is small, but in strict
Broadcasting
Grade video equipment under the
Test
Still found the time), and because of mixed Cr Cb chroma signal bandwidth led to a certain limit, S-Video although it has been relatively good but still far from perfect. S-Video, while not the best, but considering the current market conditions and the comprehensive cost and other factors, it is the most common application of video interface. Video Component Input: There can be some professional video workstation / editing card or high-end professional video equipment and other appliances on the DVD player to see YUVYCbCrY / BY / BY interfaces such as identification tags, although the markers and joint different shape but they are referring to color with an interface port (also known as component video interface). It is usually identified with YPbPr and YCbCr two, the former said that progressive scan component output, the latter said interlaced component output. Can see from the above relations, we only need to know the value of YCr Cb can get the value of G (the fourth equation is not necessary), so the video output and color processing on the uniform green ignored poor Cg and keep only Y CrCb, this is the basic definition component output. As an advanced product S-Video Component output S-Video transmission color chroma signal C is decomposed into Cr and Cb, thus avoiding a two-way mixed color decoding and re-separation process, also maintained a color the maximum channel bandwidth, only after anti-matrix decoding circuit can be reduced to RGB RGB signal imaging, which minimizes the video source to the
Monitor
Imaging video signal between the channels, avoiding the cumbersome transfer process due to image distortion caused by, so color output of the interface mode is the best variety of video input interfaces of a. As LCD TV and computer can be connected, so also may connect the port with the same computer, including audio and computer signal input terminals connected: VGA Input: VGA interface, non-symmetrical distribution of 15pin connection, it works: is the memory stored in digital format within the image (frame) signal in R
AMD
After simulation of AC in high-frequency modulated analog signal, then output to
Projector
Imaging, this VGA signal at the input (projection unit), you do not like the other video signal decoding circuit as to go through a conversion matrix. From the front VGA video imaging principle known video transmission is the shortest, so VGA interface, has many advantages such as no crosstalk loss and so no separate circuit synthesis. DV
I Input: DVI interfaces used with a digital display output connected to the computer graphics, display the computer’s RGB signal. DVI (DigitalVisual Interface) digital display interface, by September 1998, at
Intel
Developer Forum figures show that the working group was established (Digital Display WorkingGroup, referred to as DDWG), the development of digital display interface standard. DVI digital terminal is better than the standard VGA terminal signals, digital interface ensures all digital format for transmission, ensure the host to monitor the integrity of data transmission process (the introduction of non-interference signal), can get a clearer image. 12, output terminal LCD TV output terminal is the output signal interface, in order to facilitate, and other input devices, LCD Tvs generally come with AV output terminal. May also be connected to the computer with the same port D-Sub and DVI interfaces. Above we introduced a total of 12 parameters of LCD TV
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