After 2003, the GPS chip industry has shown a thriving development like mushrooms after rain. At present, more than 10 manufacturers have designed and produced GPS chips, including SiRF, Garmin, Motorola, Sony, Fujitsu, Philips, Nemerix, uNav, uBlox, etc.

　　In 2005, SIRF acquired Motorola's GPS chip business, and will cooperate to integrate GPS functions in Motorola's smart phones in the future. Coincidentally, Qualcomm has also designed an integrated GPS function in the enhanced 3G mobile phone chip CDMA2000 EV-DO. Nextel is also using SiRF technology to implement GPS functionality in its phones.

　　The United States has passed laws requiring mobile phone manufacturers to integrate GPS receivers into their products in 2007 to provide positioning and emergency call functions, which is already the era of 3G. It can be seen that although mobile phones with integrated GPS function have not yet entered the mainstream market, in the future, mid to high-end models of 3G phones will generally integrate GPS function.

　　Despite numerous manufacturers, SiRF now holds a similar position in the field of non independent GPS as Intel in the PC industry, with almost all mainstream products using SiRF chips. Therefore, readers only need to understand the main models of SiRF chips to understand the core technical differences of non independent GPS.

　　In addition, Garmin holds half of the market share in independent GPS devices, mainly using Garmin's own chip products. Garmin Company is very similar to IBM in the IT field, from map software to GPS devices, to core chips, and is a vertically integrated company in the industry. In some non independent GPS fields, Garmin also uses SiRF chips.

　　Emerging GPS chip companies find it difficult to establish a foothold in the existing market, and their focus is mainly on various IT devices that integrate GPS in the future, such as mobile phones, digital cameras, PDAs, laptops, and even USB drives.

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