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Audio – Video

Selecting Inputs on a TV or HDTV

How do I select my DVD player input on my TV?




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RF Modulator


Do you have multiple input devices hooked up to your TV?

If you need to select a specific input component connected to your TV or HDTV you usually accomplish this using your remote control for the TV.

You may want to select the device connected to the HDMI input or the inputs your DVD player are connected to. By pushing the Input Select button, you go one by one thru each set of input jacks and you should see on your TV screen what each source device is outputting. If you play your DVD player, push the select button on your remote again and again to change inputs and eventually you should see the DVD player's output.

Non-standard names

Every TV manufacturer will have different names for the same thing. One TV maker will label their inputs as DVD, VHS, while another will call them VIDEO 1 and VIDEO 2. Other designations are LINE 1 and LINE 2 or AUX 1, AUX 2, AUX 3 or L1, L2, L3. Some may even mix names like L1, L2, L3 and DV. The key point to remember is that by using your remote control you can cycle (or toggle) thru all your inputs until you find the one you want. The button on your remote control will be labeled differently as well. One may call it "input select" while another will label the button as VIDEO. Read your owner's manual. The TV itself will usually have a button to accomplish the same thing as the remote.







REMOTE CONTROL "Input Select" button 



MODERN TV

    

Selecting from multiple connections. TV today can have multiple source devices all connected to them such as DVD recorder, VCR, Cable Box etc. but they all are connected to the TV input jacks. A modern HDTV today can easily have seven or more inputs.

Modern HDTVs like Sony's BRAVIA series, use an on-screen graphical interface which you control with the remote to select functions such as channels, video settings, audio settings and other options. Sony calls their on-screen interface the XMB or cross-media-bar and you navigate up, down and across to select functions.










High Definition TV - HDTV



HDTV hookup using HDMI cable.



HDTV hookup using component video cable and audio cables.

The HDMI connection keeps everything all digital while the component video and audio connections are analog.



See
Hookup Diagrams

The most common cable hookup is a set of three cables with RCA-type connectors (also called phono plugs) that are colored red, white, and yellow. They plug into corresponding red, white and yellow RCA connections on your TV, VCR, cable box or other gear. The red and white cables carry stereo audio, while the yellow cable—the composite video cable—carries video.

Composite video: Since it separates the video from the audio, a composite video signal looks slightly better than an RF one, but it still carries the video signal's chrominance (color) and luminance (black-and-white) information together into one cable and makes your TV separate them. Not capable of carrying HDTV. 

Composite video and 2-channel audio
S-video:  a four-pin connection, the S-video cable provides improved picture quality by separating the video signal's chrominance (C, color) and luminance (Y, black-and-white) information into two parts that travel over one wire. This connection is sometimes labeled Y/C instead of S-video. Not capable of carrying HDTV.
   
Component video:  

Component video splits the video signal even further into three parts, carrying each part on its own cable. To explain exactly what parts of the signal are carried on each cable gets a bit technical; just know that the end result is a picture that can look much better than that of S-video or composite video. Your TV's component video inputs will consist of three RCA connections that are both colored and labeled: green (Y), blue (Pb or Cb), and red (Pr or Cr). Component video is often the highest-quality analog connection, and you should use it if your TV has a component video input. Component video is the only analog video-cable connection that can handle HDTV or progressive-scan DVD signals. S-video and composite video don’t carry progressive scan. 
  • Y is the luminance (brightness) signal.
  • Pb and Pr each carry part of the picture’s chrominance (color) information. Your TV uses these two chrominance signals to create the red, green and blue colors that can be mixed together to create any color on your display. (Sometimes, Pb is labeled B-Y and Pr is labeled R-Y.)

Component video connections use three normal analog cables. If you’re routing all of your video cables through a home theater receiver, check your receiver’s specs before routing component video connections through it. The receiver’s component video bandwidth specification should be

  • At least 10 MHz for progressive-scan DVD players
  • At least 30 MHz for HDTV connections

Component video may be the only connection that allows a true HDTV signal in your system if some, but not all, of your HDTV components use the HDCP copy-protection system.
  

FireWire/IEEE 1394

This digital connection comes in two forms: 6-pin and 4-pin (also known as iLink). FireWire can carry both video and audio signals, plus control information, in a compressed form that allows you to record the signal. TV manufacturers like Mitsubishi use FireWire to chain multiple devices together so that they can communicate with each other using fewer connections. 

FireWire is also commonly used in the home entertainment realm to view and transfer digital video/audio from a camcorder and as an audio-only connection to transfer digital audio—including high-resolution audio—between devices. FireWire is the only two-way connection for HDTV - the same cable can send HDTV video (and audio) to and from devices. This two-way connection is great for HDTV recording systems. One cable fully connects an HDTV with a D-VHS VCR. FireWire isn’t part of the HDCP copy-protection system. Instead, FireWire uses its own copy-protection scheme called “5C-DTCP” (or 5-company digital television content protection), which provides similar protection of content that the big TV companies don’t want you to record for yourself. The 5C system basically acts just like HDCP, letting only authorized (5C-equipped) equipment make recordings of “flagged” material.
  
DVI - Digital Video

Many of today’s cable TV and satellite set top boxes feature the relatively new DVI or HDMI outputs. For video, connect DVI or HDMI as you would component connections - they’re both meant to carry digital HDTV signals.

HDMI is a fully digital, multi-channel audio and High Definition video carrier. When it’s fully implemented, the HDMI output on your cable TV/satellite box will go into your home theater receiver and out again into your TV.

DVI stands for digital visual interface. There are three types of DVI connections: DVI-D carries digital video, DVI-A carries the DVI signal to an analog display (like a CRT computer monitor), and DVI-I carries both analog and digital on the same connector. 

DVI-D is the one most commonly found on current digital TVs, and it lets you send a pure, uncompressed digital video signal from a source to your TV. It's a video-only connection that's a popular choice for sending HDTV signals from an HD source (like a cable box) to your HDTV, although longer cable runs (over 20 feet) can degrade the signal. DVI is also on DVD players so you can send a pure digital source from the player to a digital TV. 



 
HDMI

The High Definition Multimedia Interface can carry both high-definition video and high-resolution, multi-channel digital audio over one cable. Like FireWire, it can also carry control information. With the purchase of a simple adapter, you can connect a DVI-equipped source to an HDMI-equipped TV or vice versa, as long as the DVI connection has HDCP copy protection. HDMI can also travel over longer cable runs than DVI with less signal degradation.

DVI HDMI adapter cable




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