The rapid development of automotive network era of fear of an end car navigation – car navigation, a
Article by hi joiney
Car audio equipment is first used in automotive electronic products, although only an auxiliary device, the operating performance of the car has no effect, but as indicators of people enjoying more and more demands, car manufacturers Application of car audio equipment is also increasing attention. After 80 years of development, it has evolved from the original car radio into a set of audio-visual entertainment, communications, navigation, driver assistance and other functions in an integrated multi-media vehicle electronic systems, and become an essential vehicle components and as basis for evaluation of vehicle comfort. Back in the United States first appeared in 1923, assembling radios car, many cars to follow suit later in the instrument panel assembly is installed radios. At that time car radios are used tube until the emergence of semiconductor technology 50 years after the emergence of the car radio technology revolution, with the gradual replacement of the tube semiconductor transistors to improve the life of the car radio. 70 early, cassette tape recorders into the market, one can play cassette tapes in the car with a retractable dual-purpose machine in the car at the same time the movement began to ASIC. Until the late 80s, car audio and more generally to a retractable dual cassette machine and a pair of speakers based on combinations of two-way left and right channel speaker, and some placed on both sides of the dashboard assembly, and some home on the door, some put the rear back seat, retractable dual-use machines more than 20 watts output power less. 90 end of the decade, car audio has entered a new milestone, the high-power multi-output, multi-speaker surround sound audio, multi-laser disc CD and other direction. World Audio car stereo manufacturers will also be opened up as a special industrial sector, the special environment for the car, give full consideration to car acoustics, using high-tech manufacture of car audio equipment, the transmission of sound entirely comparable with the home stereo. The last century, the last dozen years, the once brilliant CD technology is unparalleled commitment to the successful transition of the task. 1981: SONY and Philips CD specifications and standards initiatives 1982: SONY Introduces World’s first CD player CDP-101 and the world’s first CD?? BillyJoel’s52ndStreet 1984: SONY launch world’s first portable CD player 1985: SONY and Philips also announced that the computer can use the CD format 1989: CD in the U.S. that sold 2,500 million in the first batch of two-speed CD-ROM also launched. 1990: SONY and Philips CD-R specifications released 1994: CD become standard on personal computers 1995: DVD standards officially announced 1996: DVD standards to be formally identified 1997 Year: world’s first DVD player was launched, more than 500 chip set also be introduced. 1998 years: the world’s first official DVD-ROM computer applications in a number of high-end ………… 1973 GPS system, the official birth of the program 1989 2 4 th work of a GPS satellite successfully launched 1994 Satellite Navigation System, completed practical …………
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