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Car DVD player for BMW 3 Series E92(manual air-conditioner)

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Are you looking for a 2 Din auto DVD Player which can run like a computer? So that you can enjoy every function more faster and easily. If you are looking for one, i am willing to introduce this amazing unit for you. Car DVD player for BMW 3 Series E92(manual air-conditioner) are the first 2 din general car DVD which uses the ARM system in the market! ARM makes the system run like a computer, faster than any general unit (70 times faster!!). This DVD player also has Bluetooth, iPod and GPS Navigation etc. And the GPS function has the dual zone function: First, you can enjoy Navigation with car speakers in the front zone; while backseat passengers can enjoy DVD movies through the AV output of the unit. Second, You can listen to the music while using GPS navigation at the same time.Let’s look for more information about this BMW 3 Series E92 dvd player.

Fit to these cars:
manual air-conditioner+heated seat
BMW E90 3 Series  (2005 Onwards) Saloon 
BMW E91 3 Series  (2005 Onwards) Touring 
BMW E92 3 Series  (2005 Onwards) Coupe 
BMW E93 3 Series  (2005 Onwards) Cabriolet

Car DVD player for BMW 3 Series E92

Key features:
1.6.2 inch 16:9 800*480 digital high definition TFT LCD touch screen
2.Built-in GPS navigation system
3.Disc Play.Compatible with DVD-R/DVD-RW/DVD+R/DVD+RW/CR-R/CD-RW/CD-DA/MP3/WMA/HDCD/SVCD/VCD/MPEG/JPEG etc
4.mini USB and SD card.Support DIVX/MPEG/DAT/MOV/VCD/XVID/MP3/MP4/WMA/JPEG etc
5.AUX In Support
6.IPOD Support
7.Built in analog TV. Built in DVB-T as options
8.AV input and output, support rear camera input,automatically switch to rear camera when revese the car
9.Radio function.30 preset stations,5BAND*6.Support RDS
10.Build in Bluetooth for hand free (Coming Tel No. display function & Call out directly by touch screen)
11.Build in Bluetooth music,play music in your phone via bluetooth, Support A2DP

I will tell you how many fantastic functions this DVD Player has. It has Radio function, includes 30 Preset Stations. And it supports these DVD formats: AVI/DVD/DVD+R/DVD-R/DVD-RW/VCD/MP3/CD/CD-RW/JPEG, you will enjoy yourselves with this fantastic DVD during your trip!The important function of this DVD Player is GPS function. Now the transportation has been developed so fast that the number of roads and streets increases quickly, and at the same time, people often need to travel in many place. Then a GPS system for navigation becomes very helpful and useful. So the GPS function is very necessary for your BMW 3 Series E92.

For those drivers who still would like to get a GPS navigation for their ride, they can still buy the device with built-in map. The mainstream on the market is Garmin, iGo, Tomtom, Sygic, Mellegan, etc. Each of them have different fans and followers. Such as iGo 8, people may find the map UI is very intuitive and user-friendly, plus many POI data resource to search. But the problem is, the iGo maps are full of illegal ones throughout the internet, people can download these ones without any cost easily. It’s just like a piece of cake. So many Car GPS provider don’t want to work with them. On the contory, another Sygic map is also widely used, and the copyright is much well protected. So famous Car GPS provider like Seicane is now using IGO map as their default map. It’s also quite welcomed by the customers.

We may used to watching digital TV with versatile programs at home. But do you know that, even when you’re on the road, you can still watch the digital TV with good screen resolution and popular programs like American Idle, famous TV series like Lost, Heros, etc? Amazing right? Now more and more auto DVD player enables the TV function, one is with traditional analog TV, another one is with modern digital TV like DVB-T signal.

Now 2 din Car DVD player for BMW 3 Series E92(manual air-conditioner) should be a single on the most common merchandise. You may listen to your preferred music, music channels, and weather forecast or visitors reports with no any troubles. As well as music enjoyment, the 2 din BMW 3 Series E92 dvd player enables you to watch Tv and play games also.

Car DVD player for Mercedes-Benz CLK-C209

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What makes driving nowadays from driving in the past is the kind of entertainment that you get as you take a car trip. In the past, long trips were boring because there was nothing to entertain you, especially if you are driving alone. The situation could be worse if you have a bunch of young children traveling with you. Their excitement would make them behave well at first but after a few hours of sitting down with nothing to do, they get bored and start complaining and then fighting, making you feel angry, distracted and mad while you are driving.But this has changed with the advent of the Car DVD player for Mercedes-Benz CLK-C209 which allows you to play music or movie while you are on the move. Your riders can bask in the comfort of the backseat and enjoy watching their favorite movies on the touch screen high definition monitor that comes with the DVD.

Car DVD player for Mercedes-Benz CLK-C209

Quick Overview

Fit to: Mercedes-Benz CLK-C209(1998-2004)
GPS yes Radio yes Digital TV opt.
DVD yes Bluetooth yes Camera opt.
Analogue TV yes Ipod yes Wi-Fi no
USB/SD yes Rearview yes 3G Net no
Fit to these cars:
Mercedes-Benz Vaneo:2002 to 2005
Mercedes-Benz Viano:2004 Onwards
Mercedes-Benz Vit0:2004 to 2006
Mercedes-Benz C-Class W203(2000-2005)
Mercedes-Benz A-Class W168(1998-2002)
Mercedes-Benz CLK-C209(1998-2004)
Mercedes-Benz CLK-W209(1998-2004)
Mercedes-Benz G-W463(1998-2004)

The DVD comes with a touch screen and high resolution monitor where you can watch movies anytime. You can place it on the backrest of your seat so that your riders on the backseat will be comfortable viewing the movies. This will keep them occupied as you drive. With this kind of entertainment, your riders will have a good time travelling even if your destination is quite far away.

Set your amp gains properly.Our Tech Support people field calls every day from customers who can’t understand why their new car audio system sounds so bad. Most people think the gain control on their new amplifier controls the volume level. Naturally, they turn it all the way up and then bad things happen. The gaincontrol actually adjusts the amount of input signal coming into the amplifier. Crank it up too high, you’ll hear some nasty distortion.The general idea is to turn your receiver’s volume control roughly 3/4 of the way up to maximum volume, then turn up your amp gain until you hear distortion. Back it off a little, and you’re all set. Every amp manufacturer will have specific suggestions, so you’ll want to check out your manual for the best way to set the gain on your new amplifier.

With the Mercedes-Benz CLK-C209 GPS Navigator you will enjoy a strong and clear signal anywhere you are. You can be traveling in isolated places far from cities but with your GPS, you can easily remain in contact with your family, your office and your friends. The GPS navigator will also indicate your position to others who have the GPS receiver. In case of engine trouble or other road mishaps, those who come to help you will be able to determine your exact location even if you cannot describe it to them accurately. You can have a built-in TV in your car and with the strong signal, it will be possible for you to watch a TV program or two. Backing out your car has become safer because of the automatic rear view when you drive on the reverse. You will see in your screen objects or people behind your car, reducing cases of accidents.

Key features:
1.6.2 inch 16:9 800*480 digital high definition TFT LCD touch screen
2.Built-in GPS navigation system
3.Disc Play.Compatible with DVD-R/DVD-RW/DVD+R/DVD+RW/CR-R/CD-RW/CD-DA/MP3/WMA/HDCD/SVCD/VCD/MPEG/JPEG etc
4.mini USB and SD card.Support DIVX/MPEG/DAT/MOV/VCD/XVID/MP3/MP4/WMA/JPEG etc
5.AUX In Support
6.IPOD Support
7.Built in analog TV. Built in DVB-T as options

Because your car is equipped with a Mercedes-Benz CLK-C209 GPS Navigator, you can have the clearest signal when using your cellular phone even if you are enjoying a drive in a secluded place. The GPS navigator also ensures your safety while driving because you don’t need to take your hands off the steering wheel when driving. You can use the blue tooth to have a hand free operation of your cellular phone. You can make or receive call even while you are driving. You can also operate the DVD or the radio using the steering wheel control. The GPS Navigator also generates maps to guide you to your destination. You can have city maps and street maps that can help you find the place that you are looking for easily. Amenities are highlighted in your map for your convenience. Hotels, restaurants, and other places that you need to visit during your travel are all marked so that you can easily find them.

You can also listen to the latest news even if you are heading to the most isolated part of the world. The Car DVD player for Mercedes-Benz CLK-C209 Radio can let you listen to 50 or more AM anf FM radio stations in America and in soe parts of China and Europe. Have fun listening to your favorite disc jockey or learn something from commentators who discuss current social and political issues and event. You will also be aware of any weather disturbances that may affect your trip.

TomTom map for car dvd player

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Most car DVD player have the function of gps navigation.And there is many kinds of maps can work on this device.Normally dvd player can support these maps: Tomtom, IGO, Route 66,Papago,PolNav etc.And TomTom is the most popular one.Some android dvd player even can Support One Key navigation,support Google Map + Real-time Traffic,Support Google Voice navigation,Support various map software:GARMIN,IGO8,NAVIONE,RTNAVI,AUTONAVI,MAPBAR,GUIDER,EDUSHI etc. support self-help internet navigation: GARMIN,IGO8,NAVIONE,MAPBAR,HUAWEI etc.TomTom announced a software update to a handful of its portable navigation devices. The updates aim to make these devices more customizable and easier to use. Models include the TomTom x50-series (including the XL 350 and the XXL 550). Users can access the updates for free by connecting their devices to an Internet-connected PC and downloading the software using the TomTom Home application.Every map all have the possible for map software update.Then it needs the map company to solve these problems.And users can update the map software by themselves.Hope you know the basic steps of update the software.

In the course of our extensive testing program, we collect detailed data on the features and performance for the devices as engineers travel the greater New York City region and log hours in the lab. We also rate the mounts, looking for stability, portability, and adjustability. While this score counts for far less than the navigation performance of the device itself in the overall test score, it is a real factor for ownership. After a recent experience with a new TomTom unit, I want to encourage shoppers to look closely at our mount ratings.This is not just an anecdote. We’ve tested 28 different TomTom models recently, and the vast majority have a similar mount style. The worst offenders include the TomTom Ease, Start, XL, and XXL devices. The TomTom VIA and Go Live 1535 M mounts are similar, but they work better, because TomTom eliminated the ring that snaps onto the back of the GPS unit. The mount and GPS device are essentially one piece in this design and the attachment point is “ball-in-socket.”With a ball-in-socket design, a sphere on the mount snaps into an indentation on the device (think shoulder socket). Some such mounts use a magnet to secure the device to the mount, making it easy to remove, although adjustment can be tricky. These mounts are still compact, but seem to work better in our experience. This type can be found on the GO 2405, GO 2435, GO 2505, and GO 2535 in our ratings.

In fact, let me take this a step further. There is one mount design offered by TomTom that seems extremely clever, though in reality, it proves to be quite frustrating: the ring-type mount. This is a simple concept, whereby a circular ring snaps onto the back of the device. A second ring with a suction cup attaches at a small hinge point. The result is an adjustable mount that folds flat, leaving the device to be travel friendly and even pocketable (depending on the pocket and screen size) with the mount still attached.However, these mounts have a tendency to pop off the device and even the windshield, as I was reminded this past week with a relatively new TomTom. In the course of rotating through our latest test devices to gain real-world experience, I used a TomTom Start 45 TM. The mount simply would not stay attached to the windshield, popping off periodically while driving—a real distraction. That evening I had a passenger join me for a short road trip. Coincidentally, he is a TomTom owner, and he tried in vain to mount the device, but it repeatedly fell off the windshield or the mount popped off the device. Fortunately, he could hold it and guide me with his voice. Regardless of how good the device might be, I could not use it.

Some people say they use TomTom’s universal vent mount for their TomTom GPS, and it works great.Some people say his mount on his Tom Tom One pops off occasionally too.So do not worry! TomTom company can help a lot.Hope you know the basic knowledge of TomTom map for dvd player.Hope you can take care of this problem and solve it.And have a good jurny with the dvd player with TomTom gps navigation.

car navigation system

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The principles of automotive GPS navigation system is a positioning satellite signal can be received through the microprocessor to calculate the exact longitude and latitude where the car and the car speed and direction, and displayed on the display of a device.

Car ownership in the world increases every year,bringing about a serious road traffic congestion, which became a major environmental hazard, but also caused huge economic losses. Build roads, increase the flow capacity, although an important way to solve traffic congestion, but some roads wind developed countries have the world well aware that highway expansion alone to solve the traffic congestion is very limited,and must seek a high science and technology to the solution – Automotive navigation system.

How to locate the GPS?
GPS system was originally in the military needs for combat troops to provide accurate positioning, such as aircraft, ships, etc., to ensure that the initiative campaign. A few years ago began in the civil promotion, mainly used in navigation, mapping, speed, vehicle theft, and scheduling.
It is through the ground at any point (such as cars) and over the four positioning satellites to calculate the relative distance of the exact location of the car. If we know the distance of a satellite pitch, we can know that the point must be at the center of the sphere to the first satellite, the distance of the sphere radius, if we know the distance from the second satellite of known satellites, we can confirm that point of intersection of two spheres in a circular curve, with the third satellite that we can be before the third sphere and a circular curves intersect at two points, generally the distance through the fourth satellite that we uniquely determine the latitude and longitude of the point.

Status of  car navigation system:
car navigation system development and application in our late start, still in its infancy, the key is used in special vehicles, such as bank armored cars, police patrol cars and so on. But as the Great Wall of police command and GPS Shanghai Dazhong Taxi Co., Ltd. of the opening of GPS scheduling system to use,indicates that China has wider application of vehicle navigation system is no longer distant.
Easy up recently by the Beijing New Technology Development Company and the Chinese Academy of Sciences of automotive experts to develop the satellite orientation device has been officially on the market. It can be any of the dynamic position of the car accurately displayed on the instrument at any time the electronic map. The guide instrument automatically tracks the electronic map shows the current location of vehicles and the surrounding circumstances. This orientation device has the memory of the electronic transport in major urban road map and the national road network and its high accuracy above the level of villages and towns along the names. Driver-oriented instrument at any time on the inquiry in the 300 km radius from the geographical information, to provide a safe and smooth vehicle driving directions. In addition, the driver can also routes the input-oriented instrument at any time, to ensure that the original way back. The instrument is only the size of an ordinary book, weight 600 grams, the use of car cigarette lighter power supply, easy to use.

car navigation system around the world situation:
Some luxury cars in Japan, the navigation system is no longer the option, made to standard equipment. For example, Toyota Windom, Nissan Cina, Honda Legend, In addition, there are some imported cars such as Mercedes-Benz S-Class sedan, BMW’s new 7 Series and 5 Series cars are equipped with such electronic navigation system. Mitsubishi Motors is a bold gamble, as standard equipment, the navigation system installed in the middle on the Galant sedan. As car navigation system extended to more models, so the interior decoration design, the dashboard leaving a 15 cm in advance about the location of the video display screen, has become routine. New cars sold in Japan in 1997, one tenth of the installed navigation system is expected to reach one-third in 2005, including micro-car included. Basic navigation system in Japan, starts at $ 1,300.
Ford’s only car radio size GPS system, it is with radio, telephone sets fit together. Display in the center, and provide the direction for the drivers voice instructions, but does not display the map, via GPS satellite signals to determine the location of cars. Lancaster West Germany (Germany’s largest car rental companies) in 1997 with the procurement of the 8000 Mercedes-Benz car navigation system, eight airports in Germany to provide services. The service system as long as the driver entered the car’s computer to the destination, you can calculate the shortest route, and then on the screen with images and sound to guide the driver to open the destination.

In addition to accurate GPS positioning, there are the following functions:
It can directly enter the names, latitude and longitude, the line phone number to retrieve and quickly provide the best route to a destination; a result of road congestion, road construction or the wrong way and other unforeseen circumstances, the best route is not feasible, the search can then provide a new route; order to advance understanding of the driver driving the changes in the road, it can make the voice prompts, such as general road 500 m before the highway before the driver instructions 1000 m and the change of road conditions direction; vehicle driving in the intersection before crossing the whole real screen can automatically map, specify the name of the intersection, turn after the road name and direction, which is a major automotive navigation capabilities. Can be said that the biggest civilian car navigation system  market is.

 

Introduce Digital Video Broadcasting of car dvd player

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Digital TV is an important optional function in car DVD player nowadays. Digital TV include ATSC-

MH,DVB-T ,I-SDB-T and Germany TV.Then how much do you know about this? Next we will introduce Digital

Video Broadcasting(DVB) to you.

Digital Video Broadcasting (DVB) is a suite of internationally accepted open standards for digital

television. DVB standards are maintained by the DVB Project, an international industry consortium with

more than 270 members, and they are published by a Joint Technical Committee (JTC) of European

Telecommunications Standards Institute (ETSI), European Committee for Electrotechnical Standardization

(CENELEC) and European Broadcasting Union (EBU). The interaction of the DVB sub-standards is described in

the DVB Cookbook.Many aspects of DVB are patented, including elements of the MPEG video coding and audio

coding.

DVB systems distribute data using a variety of approaches, including:
satellite: DVB-S, DVB-S2 and DVB-SH
DVB-SMATV for distribution via SMATV
terrestrial television: DVB-T, DVB-T2
digital terrestrial television for handhelds: DVB-H, DVB-SH
microwave: using DTT (DVB-MT), the MMDS (DVB-MC), and/or MVDS standards (DVB-MS)
cable: DVB-C, DVB-C2

These standards define the physical layer and data link layer of the distribution system. Devices

interact with the physical layer via a synchronous parallel interface (SPI), synchronous serial interface

(SSI), or asynchronous serial interface (ASI). All data is transmitted in MPEG transport streams with some

additional constraints (DVB-MPEG). A standard for temporally-compressed distribution to mobile devices

(DVB-H) was published in November 2004.These distribution systems differ mainly in the modulation schemes

used and error correcting codes used, due to the different technical constraints. DVB-S (SHF) uses QPSK,

8PSK or 16-QAM. DVB-S2 uses QPSK, 8PSK, 16APSK or 32APSK, at the broadcasters decision. QPSK and 8PSK are

the only versions regularly used. DVB-C (VHF/UHF) uses QAM: 16-QAM, 32-QAM, 64-QAM, 128-QAM or 256-QAM.

Lastly, DVB-T (VHF/UHF) uses 16-QAM or 64-QAM (or QPSK) in combination with COFDM and can support

hierarchical modulation.

The DVB-T2 specification was approved by the DVB Steering Board in June 2008 and sent to ETSI for

adoption as a formal standard. ETSI adopted the standard on September 9, 2009.The DVB-T2 standard gives

more robust TV reception and increases the possible bit rate by over 30% for single transmitters (as in

the UK) and should increase the max. bit rate by over 50% in large single-frequency networks (as in

Germany, Sweden).

DVB has established a 3D TV group (CM-3DTV) to identify “what kind of 3D-TV solution does the

market want and need, and how can DVB play an active part in the creation of that solution?”. The CM-3DTV

group held a DVB 3D-TV Kick-off Workshop in Geneva on January 25, 2010, followed by the first CM-3DTV

meeting the next day.Besides audio and video transmission, DVB also defines data connections (DVB-DATA –

EN 301 192) with return channels (DVB-RC) for several media (DECT, GSM, PSTN/ISDN, satellite etc.) and

protocols (DVB-IPTV: Internet Protocol; DVB-NPI: network protocol independent).

Older technologies such as teletext (DVB-TXT) and vertical blanking interval data (DVB-VBI) are

also supported by the standards to ease conversion. However, for many applications more advanced

alternatives like DVB-SUB for subtitling are available.

So you can clearly know the Digital Video Broadcasting of a car DVD player. And then decide wheter

need to buy the optioanl function of  DVB when buy a car DVD player gps navigation sydtem

Introduce to car audio/video system

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Car audio/video system which is named car AV, 12-volt,mobile audio and other terms are used to describe the video or sound system fitted in an automobile. While 12-volt audio/video systems are also marketed, used or manufactured for marine, buses and aviation. We will introduce on cars as the most common application.

From the earliest days of radio, enthusiasts had adapted domestic equipment to use in their cars. In the 1960s, tape players using reel to reel equipment, Compact Cassettes, and then 8-track cartridges were introduced for in-car use.

A stock car audio system refers to the OEM application that the vehicle’s manufacturer specified to be installed when the car was built. A large after market industry exists where the consumer can at their desire replace many or all components of the stock system.

In modern cars, the primary control device for an audio system is commonly referred to as a head unit, and is installed in the center of the dash panel between the driver and the passenger. In older vehicles that had audio components as an option, such devices were mounted externally to the top of or underneath the dash. Car speakers often use space-saving designs such as mounting a tweeter directly over a woofer or using non-circular cone shapes. Subwoofers are a specific type of loudspeaker for low frequency reproduction. Extremely loud sound systems in automobiles, which have been nicknamed “boom cars”, may violate the noise ordinance of some municipalities.

Stock unit
        A stock car audio system refers to the OEM application that the vehicle’s manufacturer specified to be installed when the car was built. A large after market industry exists where the consumer can at their desire replace many or all components of the stock system.

Speakers

        A set of speaker drivers removed from a passenger vehicle.Car speakers are largely functionally identical to any other loudspeaker design with key components specialized for use in mobile environments, and generally serve an identical purpose. One major key design difference is mult-axial mounting of different types of loudspeakers in the same footprint, such as a tweeter directly mounted over a woofer. Another key difference is non-circular cone shapes, such as square, oval, or even triangular. Both of these features reflect a significant reduction in space and size that a speaker may occupy in a vehicle cabin.

        Material construction may also include more exotic and hearty components more suitable to mobile use. Marine speakers may have plating for corrosion resistance. Cones may be coated with a substance to resist expansion and contraction under high vehicle cabin temperatures, known to reach 140 °F (60 °C) in the sun. Subwoofers may also be found in mobile audio applications where a cabin speaker may lack the desired low frequency response on its own.

         Before stereo radio was introduced, the most common speaker location was in the middle of the dashboard pointing through perforations towards the front windshield. In most modern applications, speakers are mounted certain common locations including the front deck (or dash), the rear deck (or parcel shelf), the kick panel (located in the footwell below the A-pillar,) or the doors. In the case of subwoofers, mountings are usually under the seat or in the trunk. Each position has certain strengths and limitations from both a quality of sound, and a vehicle manufacturing perspective.

        5.1 and even 7.1 channel surround sound systems, as well as THX II Certified, are now being integrated into some cars by both aftermarket enthusiasts and car manufacturers themselves. These systems include the full complement of front left, right and center speakers along with rear right and left surround speakers.

Amplifiers

A car audio amplifier.
        Blaupunkt Class T amplifierBasically a mobile audio amplifier, a car ‘amp’ is a term used to refer to a dedicated electronic amplifier separated from the other components of the system. Though most head units have an amplifier, some do not, or lack the desired power or additional features (e.g., equalization controls or crossover systems). External amplification is available and most often used when existing amplification is insufficient. External amplifiers can be mounted in a different part of the car than the “head unit”; in many cases, an additional amp is mounted in the trunk. This is usually the case when powering a subwoofer, where desired wattage may be several multiples more compared to other cabin speakers.

        Though less common, OEM external amplification can be found in ‘premium’ audio packages, or in luxury cars. More common is aftermarket amplification installed later to satisfy the expansion of an existing system in some way. During operation, it is common for a vehicle’s charging system to fluctuate, so a regulated amplifier will maintain its power output regardless of voltage fluctuation. Amplifiers rated at 100 watts at 14.4 volts can not be regarded equal as to an amplifier that can maintain 100 watts at 12 volts. Outside of certain standards, it is not uncommon for manufacturers to list a 14.4 rating and not post a 12 volt value.

Head unit

        A Panasonic single DIN head unit, combining radio, CD and MP3In modern cars, the primary control device for an audio system is commonly referred to as a head unit, and is installed in the center of the dash panel between the driver and the passenger. In older vehicles that had audio components as an option, such devices were mounted externally to the top of or underneath the dash.

        The headunit itself is usually a multi-purpose device that houses multiple types of components in its housing. The most common components are a radio receiver/tuner usually with AM and FM bands, and a small amplifier for driving an audio signal to speakers. Other possible components include various media devices, such as (in older vehicles) a tape player (either 8-track or cassette), CD player, DVD player, Minidisc, USB flash memory, and even a hard disk drive typically used in notebook computing. Many head units also feature a DSP component, and equalization component (such as bass and treble controls), or a control interface for another feature on the car (such as a back-up/parking camera, navigation system, trip odometer, etc).

        Due to auto manufacturing differences over the years, aftermarket headunit products are manufactured in multiple form factors. The primarily used size is mostly referred to by its legacy name of DIN, which refers to ISO 7736. DIN headunits come as single DIN or double DIN. A third less common standard is used mostly by Chrysler group and for a time Mitsubishi in their OEM devices.

Dampening

        Sound deadening material is often used in the door cavities and boot/trunk area to dampen excess vibration of the panels in the car in response to loud subwoofer bass tones, especially the boot/trunk. The most common type of deadening is either butyl or rubberized asphalt, a product which has an adhesive quality and can be applied by simply pressing it into place with a roller and using a heat gun (or hair dryer). Other types of deadening can be sprayed on, but they are less common because of the additional installation difficulties.

Capacitors

        A powerful after-market audio system installation in a ToyotaCapacitors are used to store energy for the amplifier to draw on demand. They come in many different sizes ranging from 0.5 farad to well over 100 farads and their intended function is to temporarily cover the short-burst electrical demands of a car audio system that have exceeded the general electrical capabilities of the vehicle. There is little evidence to suggest they impart any benefit to the system, however, due to their low energy storage (compared with the battery) and exponential nature of capacitor voltage decay.

Subwoofers

        Subwoofers are a specific type of loudspeaker for low frequency reproduction. Mobile ‘subs’ are not very different from any other application of sub in terms of construction. However it is more common in aftermarket that visual aesthetics take on a more significant role in design than other types of sub drivers, including high contrast paint schemes, grill covers, translucent or refractive materials. Typical subwoofer drivers range in size from an 8″ diameter to 10″ or 12″; more rarely, some car systems may have 15″, 18″, 21″, 22″, 24″ or even 32″ subwoofers.

        A subwoofer is used when existing low frequency production is unsatisfactory, either in frequency range or in volume. Design goals have led to subwoofer, both driver’s alone and whole packages, with some extreme difference from one another. Space conscious design has reduced some driver depth to 2″ or less, or enclosure depth to 3″. Pure loudness through increasing sound pressure has led to some drivers with excursions as great as 4″ and vented components to cool the “motor” of the speaker. Quality and clarity has led to driver enclosures being tuned by construction to resonate or neutralize certain frequencies.

 

custom tax of car dvd player

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About the Import  Custom Tax of buying car DVD player, do you need to pay custom tax? Different countries have different conditions.  It do not need to pay taxes in America.We will try our best to help our buyer to minimize the risk of paying taxes, but you still find the price is lower than standard even you are chosen to pay taxes. We also will value down the price on the package to help you from paying taxes. The price on the package will be USD$100 – USD$180.We also can write lower than USD$100 – USD$180 according to your needs.
First, Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility.Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying.
Second, Some countries’ customs may charge taxes for importing good from another country such as Import Duty,Value Added Tax, a Purchase Tax, Customs clearance fees etc. Buyers as importer are responsible for paying such costs. Buyers can not request to cancel the order or request for refund or resend under this situation.

What is Paypal

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PayPal is the faster, safer way to pay and get paid online. The service allows people to send money without sharing financial information, with the flexibility to pay using their account balances, bank accounts, credit cards or promotional financing. With 106 million active accounts in 190 markets and 25 currencies around the world, PayPal enables global ecommerce. PayPal is an eBay (Nasdaq:EBAY) company and is made up of three leading online payment services: the PayPal global payment service, the Payflow Gateway and Bill Me Later. More information about the company can be found at PayPal.com. PayPal is headquartered in San Jose, Calif. and its international headquarters is located in Singapore.

  • Founded in December 1998, PayPal is the leading global online payment company.
  • PayPal has more than 106 million active registered accounts and is available in 190 markets.
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  • PayPal has localized websites in 21 markets including Australia, Austria, Belgium, Brazil, Canada, China, France, Germany, Hong Kong, Italy, Israel, Japan, Mexico, the Netherlands, Poland, Singapore, Spain, Switzerland, Turkey, the United Kingdom and the United States.
  • PayPal is headquartered in San Jose, Calif. with offices in Timonium, Md. Its European headquarters is in Luxembourg and its international headquarters is located in Singapore. PayPal has operation centers located in Berlin; Chandler, Ariz; Dublin, Ireland; near Omaha, Neb.; Petaling Jaya, Malaysia; Sao Paulo; and Shanghai. PayPal has development centers in Austin, Tx.; Chennai, India; Scottsdale, Ariz.; Singapore; and Tel Aviv, Israel.

 

Introduce to GPS

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The Global Positioning System (GPS) is a space-based global navigation satellite system that provides reliable location and time information in all weather and at all times and anywhere on or near the Earth when and where there is an unobstructed line of sight to four or more GPS satellites. It is maintained by the United States government and is freely accessible by anyone with a GPS receiver. In addition to GPS other systems are in use or under development. The Russian GLObal NAvigation Satellite System (GLONASS) is for use by the Russian military. There are also the planned Chinese Compass navigation system and Galileo positioning system of the European Union (EU). GPS was created and realized by the U.S. Department of Defense (DOD) and was originally run with 24 satellites. It was established in 1973 to overcome the limitations of previous navigation systems.

The design of GPS is based partly on similar ground-based radio navigation systems, such as LORAN and the Decca Navigator developed in the early 1940s, and used during World War II. In 1956 Friedwardt Winterberg proposed a test of general relativity using accurate atomic clocks placed in orbit in artificial satellites. To achieve accuracy requirements, GPS uses principles of general relativity to correct the satellites’ atomic clocks. Additional inspiration for GPS came when the Soviet Union launched the first man-made satellite, Sputnik in 1957. A team of U.S. scientists led by Dr. Richard B. Kershner were monitoring Sputnik’s radio transmissions. They discovered that, because of the Doppler effect, the frequency of the signal being transmitted by Sputnik was higher as the satellite approached, and lower as it continued away from them. They realized that since they knew their exact location on the globe, they could pinpoint where the satellite was along its orbit by measuring the Doppler distortion (see Transit (satellite)).

The first satellite navigation system, Transit, used by the United States Navy, was first successfully tested in 1960. It used a constellation of five satellites and could provide a navigational fix approximately once per hour. In 1967, the U.S. Navy developed the Timation satellite that proved the ability to place accurate clocks in space, a technology that GPS relies upon. In the 1970s, the ground-based Omega Navigation System, based on phase comparison of signal transmission from pairs of stations, became the first worldwide radio navigation system. However, limitations of these systems drove the need for a more universal navigation solution with greater accuracy.

While there were wide needs for accurate navigation in military and civilian sectors, almost none of those were seen as justification for the billions of dollars it would cost in research, development, deployment, and operation for a complex constellation of navigation satellites. However during the Cold War arms race, the nuclear threat to the very existence of the United States was the one need that did justify this cost in the view of the US Congress. This deterrent effect is why GPS was funded. The nuclear triad consisted of the US Navy’s submarine-launched ballistic missiles (SLBMs) along with the US Air Force’s strategic bombers and intercontinental ballistic missiles (ICBMs). Considered vital to the nuclear deterrence posture, accurate determination of the SLBM launch position was a force multiplier.

Precise navigation would enable US submarines to get an accurate fix of their positions prior to launching their SLBMs. The US Air Force with two-thirds of the nuclear triad also had requirements for a more accurate and reliable navigation system. The Navy and Air Force were developing their own technologies in parallel to solve what was essentially the same problem. To increase the survivability of ICBMs, there was a proposal to use mobile launch platforms so the need to fix the launch position had similarity to the SLBM situation.

In 1960, the Air Force proposed a radio-navigation system called MOSAIC (Mobile System for Accurate ICBM Control) that was essentially a 3-D LORAN. A follow-on study called Project 57 was worked in 1963 and it was “in this study that the GPS concept was born.” That same year the concept was pursued as Project 621B, which had “many of the attributes that you now see in GPS and promised increased accuracy for Air Force bombers as well as ICBMs. Updates from the Navy Transit system were too slow for the high speeds that the Air Force operated at. The Navy Research Laboratory continued advancements with their Timation (Time Navigation) satellites, first launched in 1967, and with the third one in 1974 carrying the first atomic clock put into orbit.

With these parallel developments out of the 1960s, it was realized that a superior system could be developed by synthesizing the best technologies from 621B, Transit, Timation, and SECOR in a multi-service program.

Over the Labor Day weekend in 1973, a meeting of about 12 military officers at the Pentagon discussed the creation of a Defense Navigation Satellite System (DNSS). It was at this meeting that “the real synthesis that became GPS was created.” Later that year, the DNSS program was named Navstar. With the individual satellites being associated with the name Navstar (as with the predecessors Transit and Timation), a more fully encompassing name was used to identify the constellation of Navstar satellites, Navstar-GPS, which was later shortened simply to GPS.

After Korean Air Lines Flight 007, carrying 269 people, was shot down in 1983 after straying into the USSR’s prohibited airspace, in the vicinity of Sakhalin and Moneron Islands, President Ronald Reagan issued a directive making GPS freely available for civilian use, once it was sufficiently developed, as a common good. The first satellite was launched in 1989, and the 24th satellite was launched in 1994.

Initially, the highest quality signal was reserved for military use, and the signal available for civilian use was intentionally degraded (“Selective Availability”, SA). This changed with U.S. President Bill Clinton ordering Selective Availability turned off at midnight May 1, 2000, improving the precision of civilian GPS from 300 meters (about 1000 feet) to 20 meters (about 65 feet). The U.S. military by then had the ability to deny GPS service to potential adversaries on a regional basis.

GPS is owned and operated by the U.S. Government as a national resource. Department of Defense (DOD) is the steward of GPS. Interagency GPS Executive Board (IGEB) oversaw GPS policy matters from 1996 to 2004. After that the National Space-Based Positioning, Navigation and Timing Executive Committee was established by presidential directive in 2004 to advise and coordinate federal departments and agencies on matters concerning the GPS and related systems. The executive committee is chaired jointly by the deputy secretaries of defense and transportation. Its membership includes equivalent-level officials from the departments of state, commerce, and homeland security, the joint chiefs of staff, and NASA. Components of the executive office of the president participate as observers to the executive committee, and the FCC chairman participates as a liaison.

DOD is required by law to “maintain a Standard Positioning Service (as defined in the federal radio navigation plan and the standard positioning service signal specification) that will be available on a continuous, worldwide basis,” and “develop measures to prevent hostile use of GPS and its augmentations without unduly disrupting or degrading civilian uses.”

 

What is CANBUS

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What’s CAN Bus?
CAN (Controller Area Network) Bus is a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other within a vehicle without a host computer, which has quickly gained acceptance into the automotive and aerospace industries. CAN is a serial bus protocol to connect individual systems and sensors as an alternative to conventional multi-wire looms. It allows automotive components to communicate on a single or dual-wire networked data bus up to 1Mbps.

Development of the CAN Bus started originally in 1983 at Robert Bosch GmbH. The protocol was officially released in 1986 at the Society of Automotive Engineers (SAE) congress in Detroit, Michigan. The first CAN controller chips, produced by Intel and Philips, came on the market in 1987. Bosch published the CAN 2.0 specification in 1991.

Before CAN Bus
Since the early 1940’s, automakers have continually improved their vehicles’ technology by integrating an increasing amount of electronic components. As technology progressed, the vehicles became more complex as electronic components replaced mechanical systems and provided additional comforts, convenience, and safety features. Up until the release of CAN Bus, vehicles contained enormous amounts of wiring which was necessary to interconnect all of the various electronic components.

Due to the vast amount of wiring, an after market installation requires the installer not only to understand how the integrated systems communicate with each other, but also requires numerous connections to be made throughout the vehicle. To make matters worse, the vehicle wiring differs between vehicle years, makes, and even models. As a result, installers need to be highly knowledgeable and perform intensive labor for the most trivial after market equipment or the installation shop experiences countless hours of lost time on troubleshooting and sometimes even expensive claims for damaged OEM equipment. During this progression, installation shops have had an increasingly difficult time finding qualified staff that are able to perform everyday installations and as a result, have either had to increase their prices to compensate for the required specialization and labor, or simply had to turn away the customers who owned complex vehicles.

Introducing CAN Bus
The BMW 850 coupe was the first CAN Bus vehicle to enter the market in 1986. By reducing the vehicles wiring by 2km, the vehicles overall weight was significantly reduced by at least 50kg and using only half the connectors. For the first time, each of the vehicles systems and sensors were able to communicate at very high speeds (25kbps – 1Mbps) on a single or dual-wire communication line as opposed to the previous multi-wire looms. However, the introduction of CAN Bus also increased the vehicles complexity and made after market installations even more difficult and in many cases impossible to perform.

In 2006, over 70% of all automobiles sold in North America will utilize CAN Bus technology. Beginning in 2008, the Society of Automotive Engineers (SAE) requires 100% of the vehicles sold in the USA to use the CAN Bus communication protocol while the European Union has similar laws. Several new after market devices have been introduced into the market that utilize the CAN Bus protocol but until now, there have been no new devices that assist the aging after market remote starter and alarm system technology. Now there is an after market module that offers remote starter and alarm connectivity to the CAN Bus communication protocol.

How to find the CAN Bus Wires?

Most of the higher specification GPS Navigation systems will require a speed pulse signal as a minimum. Many also have inputs for illumination and?reverse signals. On CAN Bus vehicles these signals may not be present so a CAN Bus Interface will be required.

It is easy to identify the wiring as it is just a twisted pair of thin wires. These will be found all over the vehicle – sometimes in with a conventional main loom. The wires are called ‘CAN High’ and ‘CAN Low’ and it is important that any interface is connected?correctly to these wires. All Bridgwater Electronics Interfaces have an LED to indicate when the wires have been connected correctly.