Scart Peritel Cables

Writen by John Dulaney

The signals carried by Scart are -

Composite Signals - which is the lowest quality, signal carried by Scart where luminance and chrominance signals are mixed. Due to the interference that is caused by this mix of signals, it is considered to be of low quality and such a mix of signals would be produced by VHS VCR equipment.

S-Video - This is a high quality video. S-Video has the luminance and chrominance signals in the same way as the composite, but these are two separate signals, without any possibility of any interference between them.

RGB - RGB stands for Red, Green and Blue. This is similar to S-Video, and is a high quality video interface. These are the colours representing the picture in a TV. In a domestic source, a synchronisation signal is also required, which is present on the composite line.

Scart has become the common connector for audio visual equipment in Europe and has become the standard connector for such applications. Different Pin configurations exist in Scart, depending upon the configuration available in your video device. Sometimes the configuration could be chosen, such as, composite or S-video, by simply changing a software setting.

Scart is a bi-directional connector as far as standard composite video and analog audio signals are concerned. The feature of a Scart being bi-directional is used for a Pay TV, and in the past, used for decoding a tele-text. But now it is being applied to set-top boxes. A set-top box is a device, which is connected between a TV set and an external device and is used to decode the signal and send it to the TV for display. A TV sends its antenna video and audio signals to Scart sockets all the time and receives back these signals and displays them reproducing the audio and video. This process allows the concept of transparent set-top boxes having no tuner. It just hooks on the TV and pre-process the television signals.

A VCR has typically two Scart sockets. One is connected to the TV and the other one goes to the set-top box. When the power is off or when it is in an idling state, the VCR will forward the signals received, to the set-top box decoder for processing and then the signals would go to the TV. In recording a scrambled show, the set-top box will be driven by the VCR from its own tuner and send the unscrambled signals to the TV set for viewing or simple recording control purposes. As mentioned earlier, Scart can also power on and off a TV, more precisely bring it alive from a stand-by mode in a way a remote control would. Many TV sets have two Scart sockets, where one is used for switching from a composite input to RGB input, while the other switches a composite input to S-Video input.

Before Scart, there were no standard connectors or sockets for signal inputs for a consumer TV. It was only the RF antenna that plugged into the TV and even this socket differed between countries in its design. Incompatible standards of plug-ins existed in TVs manufactured by different companies, such as, a VHS VCR equipment would have composite video signal through a German-originated DIN-style connector, a RCA connector, which is of American origin, or a BNC connector.

Scart sockets have now become the standard in connecting audio video devices together and have provided a much simpler solution, with one socket/plug containing all necessary signals. With Scart being a standard all over the world, it has provided a real solution to connectivity, with even one cable connecting two Scart compatible devices. There is, what is termed as 'polarisation' in the connector, which will not to let you insert it in the wrong way. Multiple Scarts can be daisy chained in handling multiple signal sources into a single TV socket. Scart connectors can pass the signals unchanged when not active. The voltage levels of the signals are generally around 1 volt, which provides good noise immunity.

A Scart enables a device to command a TV set to switch between signals, in order that overlays in the TV picture image could be created. A VCR would have its power coming on as soon as the cassette is inserted and the TV set would change into video mode and then start playing immediately if the cassette's write protection tab is absent. When switched off, the VCR will send a signal to the TV set to power off, if the set has been powered on by the VCR and is still in the video mode all along.

It is always preferable to buy a commercial cable because of the detailed pin-crossovers and close pin connections, though it is possible to build your own connecting cable. Different cables have different applications. A cable for connecting a VCR or a TV set to a high-fidelity audio system needs to use only three of the 21 pins. Connecting a VCR to a computer monitor is a difficult proposition with a Scart connector. This is for the reason why it is difficult to synchronise composite video signal, consisting of red, green and blue, from the VCR with the RGB signals required by a computer monitor.

In order to achieve the connectivity, you will need a digital SCART adapter, along with the reverse one, turning your DVD or Video player into a serial digital interface (SDI). A professional SDI monitor costs more that $2,000 and the above solution is cheaper, and brings to you the same solution of a separate SDI.

Where to get SCART or PERITEL cables, adapters, a/v cables,scart to RCA, SCART to S-VIDEO,SCART a/v,REGION FREE DVD players/recorders and High Definition, HD DVD players, Blu-ray,. A multi region (aka codefree) DVD player or recorder is capable of playing DVD discs from anywhere in the world, that is all 8 regions and both PAL and NTSC standards. http://www.planetomni.com has many. Many not only play them but convert from one standard to the other for showing movies on any TV on earth. There are also PAL-NTSC 110-220 volts DVD/VCR Combos for use worldwide. CODEFREE DVD / PAL-NTSC VCR combos and MULTISTANDARD VCRs will play 100% all known DVD discs including FRENCH DVDs. You can buy region free and region free converting DVD players and region free DVD recorders from http://www.mindlogic.com in California. They give you a LIFETIME Warranty and ship worldwide. They also carry PAL-SECAM-NTSC TVs, PAL plasma, PAL LCD and PAL DLP multisystem TVs and multisystem converting and non-converting VCRs, voltage transformers, video standards converters and much more. Tel.800-514-2984 or tel. 925-686-994

Video Scaler Audiovideo Processors

Writen by John Dulaney

A video scalar converts a video signal between arbitrary resolutions. It is mainly used to convert interlaced signals of low resolution, such as, composite video signals or s-video, into higher resolution non-interlaced, like the ones in HDTV. Composite video signals are those which carries all information - the red, blue, and green signals and sometimes audio as well. S-video (separate video) is an analogue video signal in which the video data is carried separately - brightness and colour. This is unlike the composite video signal. Interlacing is a technique, by which the picture quality is improved, without consuming any extra bandwidth. Interlaced signals have flickering effect while non-interlaced ones do not.

Video scalar Audio/Video Processors are available for analogue and digital inputs and outputs or, more commonly, both combined. As an example, a video scalar would convert an analogue VGA signal into digital signal for display on a monitor. In this case the resolution of the video signal may be of low quality, creating distorted image. A scalar can increase the resolution substantially to the correct level.

A video Scalar turns a standard television into a high definition TV (HDTV). The scalar lets you connect the standard definition enabled equipment, like, DVD player, video game, VCR, etc., to HDTV display devices, such as Plasma or LCD screen TVs. A video scalar can provide multiple refresh rate outputs. For example, with a converted PAL video signal at its input, a video scalar can display video on projectors that do not support 50Hz refresh rates.

DCDi is a video mode algorithm and has been designed for video displays featuring fast moving sports events. It removes the jagged edges along the diagonal lines, which are mainly caused by interpolation. DCDi monitors this edge transmission and fills in the gaps. This technology was developed and introduced few years back, and broadcasters like CBS used it to up-convert NTSC to High Definition (HD).

No matter at what resolution the picture is delivered, be it 480i from your VCR, 480p from your DVD player, 720p from your set-top box or 1080i over Digital Visual Interface (DVI) or High-Definition Multimedia Interface (HDMI), the video processor/scalier will perfectly match the output to the optimum resolution of your display. It is your complete audio video hub, providing simultaneous audio/video switching with automatic video.

DVDi technology as used in video processor/scalar is a series of mathematical formula (algorithm) meant for video. If you want to watch a film on your TV, you would wonder how this technology will behave under the circumstances. In making a video out of a film, if the transition from a film to video is not done properly, it results in 'bad editing'. The video processor within the video processor/scalar unit will switch modes, such as, film vs. video - video vs. film, in order to avoid artifacts. The processor switched from film to video as soon as it encounters these bad editing portions. This may result in loss of resolution, which is minimised by the video processor/scalar, being motion adaptive. Then there are those jagged areas along the diagonal edges. DCDi hides these areas in such a way that you never realise when it changes from and to film mode, Watching a movie with DCDi technology built-in video processor/scalar, makes the experience more enjoyable, owing to the fact that those annoying artifacts have all vanished, providing a continuous high definition picture viewing experience.

We offer VIDEO PROCESSORES, VIDEO UPSCALING, VIDEO RESOLUTION CONVERTING,VIDEO UPCONVERTING, PROCESSING OF THE VIDEO SIGNAL USING DVDO and ZINWELL.You'll be able to operate a multisystem TV in 99% of the world. Their dual voltage design allows them to be plugged into either a 110 voltage source or a 220 voltage source. In some cases, the plug on the television will not fit your country's outlet, so an inexpensive plug-adapter will be needed. They can generally be picked up at an electronics store such as http://www.planetomni.com for $1.95. With a multisystem TV, such as a plasma, CRT tube type, LCD or DLP, you'll likely need a codefree (sometimes called region free) DVD player. These exist in many forms. When used with a PAL-NTSC TV you'll be able to see the full 625 lines of resolution available in the PAL system and the full 525 lines used in the USA NTSC system. There exists a converting type of DVD player which is codefree in that it can read all of the world's 6 regions and both standards, PAL and NTSC. 140,000 products are available here: http://www.planetomni.com Tel. # 800-815-9380

Are Plasma Or Projection Tvs Better For Your Home Theater

Writen by Tim Gorman

When you are setting up your home theater you need to decide on what is the best way for you to watch. Many people would not have anything other than a projector as it adds to the cinema theme as well as giving you a very good image as big as you want. But many others do not want to deal with projectors and screens and would rather have the convenience of a TV style screen that you just turn on and play the DVD in as you would in any other room but on a bigger screen.

If you are using a projector then it is a good idea to make sure that your room has good thick curtains so that you can block the light from the room. As the image is produced through a projected light then it is best to use a projector in a fairly dark room. With some of the latest projectors they have a light sensor so that if the light is too bright for the image then it brightens the light to make it stronger. You also have to set up a projector for the movie and put up the screen. But it does give you a really good sense of being at the cinema as well as a really good, large picture that is very high quality.

There are some really good plasma screens around now and the cost is dropping. But you still get the sense that you are watching TV. Although if you put it on the wall then it is a lot more like a real screen. Plasmas have an advantage over projectors if you have a small room, as they did not need any space to project an image. Although plasma TV does not have the same movie theater aspect to it as a projector does it is very easy to use and does give you a very good image.

If you want ease of use and a great quality picture and are happy either to have a smaller screen, or you are able to pay for a very big one, then plasma might be best for you. But a projector can give you a really good quality image that is as big as you want and there are some very good projectors that are very cheap. But you also have to set up the screen as well as the projector whenever you want to see a movie. But whatever you choose it is always worth trying it out in the store so that you can see which is the best for you.

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