Home automation Alarm security and surveillance systems CCTV Lcd Install Los Angeles

June 12, 2008 - PRLog -- Home automation (also called domotics) is a field within building automation, specializing in the specific automation requirements of private homes and in the application of automation techniques for the comfort and security of its residents. Although many techniques used in building automation (such as light and climate control, control of doors and window shutters, security and surveillance systems, etc.) are also used in home automation, additional functions in home automation can include the control of multi-media home entertainment systems, automatic plant watering and pet feeding, automatic scenes for dinners and parties, and a more user-friendly control interface.

When home automation is installed during construction of a new home, usually control wires are added before the interior walls are installed. These control wires run to a controller, which will then control the environment.
Specific domotic standards include INSTEON, X10, PLC BUS, KNX (standard), System Box, LonWorks, C-Bus, Universal powerline bus (UPB), UPnP, ZigBee and Z-Wave that will allow for control of most applications. Some standards use communication and control wiring, some embed signals in the powerline, some use radio frequency (RF) signals, and some use a combination of several methods. Control wiring is hardest to retrofit into an existing house. Some appliances include USB that is used to control it and connect it to a domotics network. Bridges translate information from one standard to another (eg. from X10 to European Installation Bus).

Home cinema, also called home theater, are entertainment systems that seek to reproduce cinema quality video and audio in a private home. In the 1950s, home movies became popular in the United States with Kodak 8 mm film projector equipment became affordable. The development of multi-channel audio systems and laserdisc in the 1980s created a new paradigm for home cinema. In the early to mid 1990's, a typical home cinema would have a Laserdisc or S-VHS videocassette player fed to a large rear projection television. In the late 1990s, home theather technology progressed with the development of DVD, Dolby Digital 5.1-channel audio ("surround sound"), and High-Definition Television.

In the 2000s, the term "home cinema" encompasses a range of systems. The most basic system could be a $50 DVD player, a standard CRT television($200), and a $100 "home theater in a box", a 2.1 speaker system with left and right speakers and a small 8" subwoofer cabinet. An expensive home cinema set-up might include a High-Definition DVD format such as Blu-ray, a 60" High-Definition Television with a "cinema-style" 16 X 9 format, a several thousand-watt home theatre receiver with five to seven surround sound speakers, and a powered subwoofer with a 12" subwoofer. The most expensive home theater set-ups, which can cost over $100,000 US, have digital projectors, expensive screens, and custom-built screening rooms which include cinema-style chairs and audiophile-grade sound equipment.

Design
Today, "home cinema" implies a real "cinema experience" and therefore a higher quality set of components than the average television provides. A typical home theater includes the following parts:

Input Devices: One or more audio/video sources. High quality formats such as HDTV or Blu-ray are preferred, though they often include a VHS player or Video Game Systems. Some home theatres now include a home theater PC to act as a library for video and music content.
Processing Devices: Input devices are processed by either a standalone AV receiver or a Preamplifier and Sound Processor for complex surround sound formats. The user selects the input at this point before it is forwarded to the output.
Audio Output: Systems consist of at least 2 speakers, but can have up to 10 with additional subwoofer.
Video Output: A large HDTV display. Options include Liquid crystal display television (LCD), video projector, plasma TV, rear-projection TV, or a traditional CRT TV.
Atmosphere: Comfortable seating and organization to improve the cinema feel. Higher-end home theaters commonly also have sound insulation to prevent noise from escaping the room, and a specialized wall treatment to balance the sound within the room.
Component systems vs. Theater-in-a-Box
High-quality home cinemas are assembled from component pieces purchased separately to provide the best combination of equipment for the cost. It is possible to purchase home theater in a box kits that include a set of speakers for surround sound, an amplifier/tuner for adjusting volume and selecting video sources, and sometimes a DVD player. Though these kits often pale in comparison to a custom-built home cinema, they are inexpensive and easy to set up; one needs only to add a television and some movies in order to create a simple home theater. This makes them popular in the public's eyes.

Dedicated home theaters

A home theater with video projector mounted in a box on the ceiling.
Built-in shelves provide a place for movie decor, DVDs, and equipment. Note the component stack on the right, where the audio receiver, DVD player, secondary monitor, and video game system are located.
The same projection screen as at top, without image.Some home cinema enthusiasts go so far as to build a dedicated room in the home for the theater. These more advanced installations often include sophisticated acoustic design elements, including "room-in-a-room" construction that isolates sound and provides the potential for a nearly ideal listening environment. These installations are often designated as "screening rooms" to differentiate from simpler installations.

This idea can go as far as completely recreating an actual cinema, with a projector enclosed in a projection booth, specialized furniture, a piano or theatre organ, curtains in front of the projection screen, movie posters, or a popcorn or snack machine. More commonly, real dedicated home theaters pursue this to a lesser degree. Presently the days of the $100,000 and over home theater is being usurped by the rapid advances in digital audio and video technologies, which has spurred a rapid drop in prices. This in turn has brought the true digital home theater experience to the doorsteps of the do-it-yourself people, often for less than what you would expect to pay for a low budget economy car. Current consumer level A/V equipment can meet and often exceed in performance what you would expect to experience at a modern commercial theater.


[edit] Home Theater Seating
Home theater seating consists of chairs specifically engineered and designed for viewing movies in a personal home theater setting. Most home theater seats have cup holder built into the chairs' armrests and a shared armrest between each seat. Some seating is movie theater-style chairs like those seen in a movie cinema, which features a flip up seat cushion. Other seating systems have plush leather reclining lounger types, with flip-out footrests. Additional features like storage compartments, snack trays, tactile transducers (nicknamed "Bass Shakers"), or even electric motors to recline the chair are available, depending on the model.


[edit] Backyard theater
In places that have the proper outdoor atmosphere, it is possible for people to set up a home theater in their backyard. Depending on the space available, it may simply be a temporary version with foldable screen, a projector and couple of speakers, or a permanent fixture with huge screens and dedicated audio set up poolside. Due to the outdoor nature, it is quite popular with BBQ parties and pool parties.

Some people have built upon the idea, and constructed mobile drive-in theaters that can play movies in public open spaces. Usually, these require a powerful projector, a laptop or DVD player, outdoor speakers and/or an FM transmitter to broadcast the audio to other car radios.[1][2]

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