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Audio/Video Input for Dummies (AKA beginners)

HdmiNo Fear.  We’re Here….To un-confuse you about audio-video inputs.  Don’t enter the boxing ring with your electronics salesperson unprepared.  The following descriptions of various types of input types should help clarify the differences in TVs and devices you may be shopping for in the near future.

HDMI:  High Definition Multimedia Interface

This is the most advanced form of video input available currently and will deliver both video and audio signals to your home theater system.  The cable port is a flat, thin shape which is featured on most HDTV’s that are being made and sold today.  The HDMI input allows a digital signal (perhaps from an HD DVD player or Blu-ray player) to be passed through without being converted to analog, which helps to retain maximum picture quality.   HDMI also supports audio formats Dolby TrueHD and DTS-HD master audio.

DVI:  Digital Visual Interface

This term usually applies to digital projectors and computer displays, as well as some older HDTV’s.   This input only delivers a digital video signal.  You can try using a DVI to HDMI cable if you want to hook up your HDTV to a DVD player with DVI output.

Component Video

This input uses an analog signal, which is different from the two digital inputs listed above.  Component av Video is supported by some devices, like Xbox 360, yet some manufacturers do not allow the signal to pass through component video because it doesn’t support DRM copy protection.   Though a salesperson may try to sell you on HDMI, component video is capable of transferring a beautiful digital signal as well from an HD device to your HDTV.  The component video tri-input is marked with a “Y” and “Pb” and “Pr” accompanied by the green, blue, and red ports.

S-Video:  Separate Video

Carries purely a video signal and was created around the same time as high-end VHS players.  This works for standard-def images, but are not compatible with HDTV signals.  The S-video input does better for a screen that is 32 inches or less and the cable connection may give you a hard time due to the small pins which must be aligned perfectly to be inserted properly.  It transmits via a two-part signal.

Composite Video

This input is lower quality than all the others mentioned above and only transmits via one signal.  It’s RCA cable attachment is simply user friendly and is available on most HDTVs.  We recommend using all other connections type first if possible.  Don’t be a dinosaur lover.

These are all options to hooking up your home theater systems or signal distribution throughout your home or office.

February 6, 2009 Posted by | 1 | , , , , , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

The CEC: Consumer Electronic Control

HDMI is a structural channel that simplifies cabling and provides the gateway to system-wide intelligence.  For HDMI nevocompliant devices, there is a “universal” remote that can be used, called the consumer electronic control (CEC).  This technology allows multiple electronic devices to be linked together for simultaneous usage by remote.  The remote can connect to a number of multiple devices that support the CEC technology.  This allows easy use of a fully furnished home theater system.  For instance, a camcorder and HD satellite supported television may be powered on/off at the same time with the push of only one button.  An HDTV remote will be able to select the correct input automatically on an A/V receiver and a television by simply pushing play on the DVD player.

Another fantastic use of the CEC is the “remote control pass through” application.  Instead of using a secondary device to receive the infrared signal so that devices behind opaque surfaces in the entertainment center can still be used, the HDTV remote may be used to control all of the other hidden devices as well.  Also, a CEC enabled HDTV remote can change channels on the set-top box tuner, without the need of a separate remote control.

There is no programming necessary, like with the traditional universal remote.  Also, the devices a consumer wants to sync up do not need to be made by the same manufacturer.  Any device that supports CEC technology will be compatible with the remote control.

February 2, 2009 Posted by | New Products | , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

All you need to know about buying a HDTV and more

glossary_pic_with_wordsSo you know that it’s time to shop for a new television. You also know that you want a big, beautiful, colorful, clear picture and a booming and well-balanced sound, so why can’t the product specs tag say just that? Sorting through the list of impressive numbers and lingo can be a labyrinth for someone who is unfamiliar with what these terms actually mean. Let’s get down to business with some of these commonly used descriptions and find out what really matters when shopping for a high-definition TV set:
HDTV: High-Definition Television. This is the high-resolution subset of our HDTV system. The FCC has no official definition for HDTV. The ATSC defines HDTV as a 16:9 image with twice the horizontal and vertical resolution of our existing system, which is accompanied by 5.1 channels of Dolby Digital audio. The CEA defines HDTV as an image with 720 progressive or 1080 interlaced active (top to bottom) scan lines. 1280:720p and 1920:1080i are typically accepted as high-definition scan rates.
SDTV: Standard Definition Television. This is the lower resolution subset of the ATSC’s DTV system. 480i is typically accepted as an SD signal. Digital broadcasters can offer multiple sub-programs at SDTV quality, as opposed to one or two HD programs. Digital satellite and digital cable often refer to the majority of their programs as SDTV, somewhat erroneously, as neither system has anything to do with DTV, though both, technically, consist of a digital 480i signal.
Plasma: Flat-panel display technology that ignites small pockets of gas to light phosphors. They are known for excellent image quality and superior color contrast.
LCD: Liquid Crystal Display. A display that consists of two polarizing transparent panels and a liquid crystal surface sandwiched in between. Voltage is applied to certain areas, causing the crystal to turn dark. A light source behind the panel transmits through transparent crystals and is mostly blocked by dark crystals. An LCD television is known for a bright and vibrant picture, but may give an inconsistent picture quality and color contrast from seats that are not directly in front of the screen.
DLP: Digital Light Processing. This is a Texas Instruments process of projecting video images using a light source reflecting off of an array of tens of thousands of microscopic mirrors. Each mirror represents a pixel and reflects light toward the lens for white and away from it for black, modulating in between for various shades of gray. Three-chip versions use separate arrays for the red, green, and blue colors. Single-chip arrays use a color-filter wheel that alternates each filter color in front of the mirror array at appropriate intervals.
Virtual surround sound: The television’s built-in speakers are not going to meet the same quality of a surround sound system that is purchased separately with several speakers. However, it will attempt to produce the equivalent of the sound of a home theater installation of surround sound.
Contrast: Relative difference between the brightest and darkest parts of an image. A contrast control adjusts the peak white level of a display device.
Black Level: Light level of the darker portions of a video image. A black level control sets the light level of the darkest portion of the video signal to match that of the display’s black level capability. Black is, of course, the absence of light. Many displays, however, have as much difficulty shutting off the light in the black portions of an image as they do creating light in the brighter portions. CRT-based displays usually have better black levels than DLP, plasma, and LCD, which rank, generally, in that order.
Energy Star qualified: The most recent rules are called Energy Star 3.0. These require the product to perform at a certain level of maximum power consumption when in use. It is best to find a TV that meets these guidelines. The older rules are not as strict on energy consumption, because they pertain to when the set is on standby, not when it is in use.

Aspect ratio: The ratio of image width to image height. Common motion-picture ratios are 1.85:1 and 2.35:1. Television screens are usually 1.33:1 (also known as 4:3), which is similar to the Academy standard for films in the ’50s. HDTV is 1.78:1, or 16:9. When widescreen movies (films with aspect ratios wider than 1.33:1) are displayed on 1.33:1 televisions, the image must be letterboxed, anamorphically squeezed, or panned-and-scanned to fit the screen.24p, or 1080p24: A set with this feature can show 24 frames per second, exactly the way movies are shot. Cinephiles may notice smoother, more cinematic images, but the feature works only with Blu-ray players connected by HDMI cables.
120 Hz: The display will smooth out motion, making scenes with action or a moving camera look sharper. Expect to pay more for these sets.
720p: The display has low resolution, but is still high-definition. Adequate for screens smaller than 40 inches, or ones meant to be watched from more than 12 feet away.
1080p: The display has high resolution. Good for screens larger than 40 inches, or ones used for gaming, as computer displays, or for Blu-ray playback.
Anamorphic: Process that horizontally condenses (squeezes) a 16:9 image into a 4:3 space, preserving 25 percent more vertical resolution than letterboxing into the 4:3 space. For the signal to appear with correct geometry, the display must either horizontally expand or vertically squish the image. Used on about two or three promotional laser discs and many DVDs. This may also be referred to as “Enhanced for Widescreen” or “Enhanced for 16:9.”
HDMI: HDTV connection format using a DVI interface that transfers uncompressed digital video with HDCP copy protection and multichannel audio.
VGA: An input for a computer video signal. Many newer computers can use the higher-quality HDMI inputs instead, so VGA is not essential even if you plan to connect your PC to your TV.
ATSC: Advanced Television Systems Committee. This is a government-directed committee that developed our digital television transmission system. The ATSC tuner allows reception of digital television signals broadcast in North America, and is typically a standard feature in HDTVs.
NTSC: National Television Standards Committee. This is a government-directed committee that established the U.S. color TV standard in 1953. Also known, sarcastically, as Never Twice the Same Color or Never The Same Color due to the inherent difficulty in achieving proper color calibration. The NTSC tuner is for analog broadcast TV. These signals will not be used after the digital conversion this year, so don’t pay attention to this feature.
Composite: This is a low-quality video connector for older game consoles and VCRs, which is not able to carry a high-definition signal.
Component: A high-quality, three-lead connector for game consoles, DVD players and cable boxes, which is able to carry a high-definition signal, but is not quite as good as HDMI.
As a custom audio video dealer we looking forward to bringing you home theater or mobile satellite dish to life.

January 30, 2009 Posted by | General Information | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | 1 Comment