After the opening of 4G, with the promotion of China Mobile's five-mode chip strategy, domestic chip manufacturers realized that if they want to dominate the chip market, they must make a difference in multi-core multi-mode multi-frequency. At present, a number of domestic manufacturers have made great efforts to multi-core multi-mode multi-frequency chips, aiming to break the Qualcomm monopoly situation, but the actual formation of a number of competition is estimated to be in 2015.
Multi-core multi-mode multi-frequency needs
With China Mobile issuing 4G licenses, the domestic 4G market is accelerating. The curtain of the 4G contest has been opened, and mobile phone chip makers are trying their best to make a lot of efforts. They want to use their technological advantages to grab more shares in this huge market cake.
It is understood that at present, in the multi-mode frequency band, different countries have different frequency bands. This leads to the high requirements on the technology of the terminal equipment due to the need to support LTE and 2G, 3G multiple modes and multiple frequency bands, and needs to support nearly 17 different frequency bands; on the other hand, for different countries and How to coordinate resources between bands between regions.
“With regard to multi-mode multi-frequency, the industry generally believes that the band is not unified is the biggest obstacle to the global LTE terminal design. Currently, the diversity of global 2G, 3G and 4G LTE network bands poses a challenge to mobile terminal development. Global 2G and 3G technologies Each uses 4 to 5 different frequency bands, plus 4G LTE, the total number of network bands is nearly 40." Qualcomm related sources told.
In addition, support for multiple technical parameters, backward compatibility of technology, and reduction in power consumption and chip area are challenges that chip vendors have to deal with. For example, LTE technology requires chip products to support different frequency bands to meet the needs of LTE network standards and frequency bands in different countries and regions.
Type-C interface has strong expansion ability, can transmit video and video signals, expand to a variety of audio and video output interface, such as HDMI, VGA, DVI interface, and even achieve 4K resolution of the extended transmission. The Type-c interface provides bidirectional power supply, which can charge the device itself or power external devices.USB HUBS has better data transmission capability and higher charging power. USBType-C went into mass production in August 2014, using the 3.1 standard. Compared with the interface of USB2.0 used in early smartphones, the transmission speed is improved a lot, and the maximum data transmission speed can reach 10Gbit/ s. And type-c supports USB-PD power supply standard, the maximum power supply can be up to 100 watts. Different from the traditional USBType-A and Type-B interfaces, the new Type-C interface is slimmed down in size to 8.3*2.5mm, which is more suitable for use in increasingly miniaturized electronic devices.
Supports positive and negative insertion. 100% of the players who use USB interface have encountered the embarrassment of "the positive plug is wrong, the negative plug is wrong, and the positive plug is right". Because USB-C IS POSITIVE AND NEGATIVE CAN be inserted, professional point is to say that the interface does not have directionality, with much more convenient. type-c charging port, support PD fast charging protocol, can be charged while using the computer, not afraid of running out of power. HDMI interface, I like HDMI to support audio and video transmission, high resolution support 4K/2K. Interface is common, LCD TV, monitor, projector are generally also some (like to connect to TV, audio and video synchronous transmission).vga interface, this is a very common interface, most of the projector, monitor have this interface, can be connected to vga line use, support 1080P resolution. Gigabit network port, although now almost everywhere there is a wireless network, but sometimes it is not enough for you, such as playing games, the network speed is slow, delay. And then he dropped the line right in the middle of his victory. So if you have a network cable and you can connect directly to the Internet, it's great to support gigabit networks.
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