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USB3.0 interface in the end changed us?

Currently on the market there are several certified products through USB3.0, USB3.0 and Poor's mass market has become an inevitable trend, what are the main driving force behind it? USB3.0 only enhance the transmission speed, but also enhance the user experience results from many aspects, in the era of the user experience, USB3.0 does not want to fire very difficult!

Universal Serial Bus, which known as USB, is a first released in 1996 peripheral connectivity standard. Low-speed and full-speed USB1.0 contains two speed grades, respectively support 1.5MBPs and 12Mbps data rate. The goal is a unified PC USB1.0 peripheral connection interface.

USB2.0 released in 2000, which increases the data rate of the high-speed USB 480Mbps. This higher maximum bandwidth conform to the growing trend of storage to meet the needs of larger amounts of data transfer between PC and peripherals. Up to now, the world has more than 6 billion USB devices sold each year about 2 billion USB devices.

USB3.0 will fire!

Series is the newest member of the USB USB3.0 specification, it maximum data transfer rate of 5Gbps or slightly elevated to 600MB / sec. USB3.0 specification is fully backward compatible with the design, the latest SuperSpeedSSTX +/- provided and SSRX +/- signal compatible with the original USB2.0D + / D- signal, therefore, not yet fully support the system can use USB2.0 USB3.0 .

1. Why use USB3.0?

USB3.0 (also known as SuperSpeed) more than the value of the proposed locations can make mobiles handsets and consumer electronics products with great benefit. First, up to 5Gbps or 600MB / sec data rate provides sufficient bandwidth for high-performance applications. Due to the recent high-definition content and 3D technology is popular, so that the transmission of the media file size has increased dramatically.

These trends may be reflected in the value of the current sale of large-capacity storage devices, new handheld devices are now equipped with up to 64GB of embedded and / or mobiles storage devices. With the emergence of more high-definition and 3D content is expected that this trend will continue.

The new embedded and removable mass storage standard (eMMC4.41 and SD3.0) is defined up to 2TB capacity. To keep pace with the growing mass storage density, the input and output content on a handheld device also requires a corresponding increase in speed. Figuratively speaking, the use of USB2.0 is like with a small rubber hose to the Olympic standard swimming pool water, the need for too long in a new generation of storage devices.

In volume terms, using USB2.0 transfer 1GB of data takes about 60 seconds, and 64GB of data transfer takes 60 minutes or more. Now, imagine using 2TB USB2.0 data transfer looks like. With SuperSpeedUSB3.0, transmission speed will be increased by 10 times, just a few minutes to transfer 64GB of media data.

2, the battery life considerations

USB3.0 second value lies in its excellent power management. USB3.0 introduces a new power mode that allows USB connection is established in the case but did not activate the USB link layer independent of the power cut. These new power mode allows more efficient use of limited battery power supply for mobiles devices.

Requiring intermittent access data via USB case (e.g., video streaming and a music player), this improved protocol layer faster USB3.0 with each byte can be 80% lower overall power consumption. In addition, low-power link layer state can automatically enter and exit, but also for the upper application layer is transparent. This makes the system easier to migrate to USB3.0.

3, faster charging

In addition, USB3.0 also increased downstream from the legacy host USB device (e.g., PC) in the amount of current that can be extracted. The current limit of 500 mA from USB2.0 to USB3.0 upgrade of 900 mA, equivalent to an increase of 80% of available power. This not only can support high-performance applications, also makes battery charging speed of the mobiles handheld device faster.

For the end-user has been on the road, it is important to shorten the charging time and, for example, to use a USB2.0 host is assumed to be 90% efficient power depletion 1400mAh battery in more than three hours, and use USB3. 0 only 1.5 hours.

4, HD and 3D multimedia era

HD cameras and mobiles phoness with video capability of growing popularity, and video sharing applications (such as YouTube) now supports HD (1080p) format. In order to store a variety of compression formats and HD uncompressed video formats, storage density will increase accordingly.

Higher storage density means "transmission channel" also needs to speed up. Users will not have the patience to wait for one hour of video on their device into the PC for editing and sharing. USB3.0 played a crucial role in the new generation of high-definition content production and use.

5, the manufacturing process: Brush

In view of the above value reflects, USB3.0 support new usage models and improve existing usage patterns. In addition to 10 times the speed of USB2.0 system load media content outside, one of the early applications of USB3.0 is the content during production / code Brush.

A mobiles handheld device manufacturing cost and time spent on the main production line, whereas this process is the most time-consuming part of the pre-loaded brush writing programming and content. Brush process is usually done by USB, USB2.0 and is currently widely used in the production line. USB3.0 only to 10 times the speed of the phones brush machine, but also for multiple devices simultaneously Brush. Eventually, USB3.0 will significantly reduce manufacturing costs.

6, no game controller

With XboxKinect and SonyPlaystationEye latest gaming platforms such as the introduction of a controller-free gesture-based game growing in popularity. These applications take advantage of the high resolution sensor captures the player's picture, and the information is transmitted in real time to the game console. Connectivity between the sensor and the console will greatly benefit from USB3.0 speed advantage.

7, USB transfer video

In view of the wide application on a mobiles handheld device HD or 3D media content, the next logical model is used to find a way to output to a larger shared display screen browsing. It is always a challenge USB2.0 system, because it severely limits the bandwidth of the video quality. With USB3.0 bandwidth, even without any compression, it can easily support 24 full color 30FPS 1080pHD.

In addition, USB-IF is currently defined USB3.0 Audio - Video category aim is to optimize for mobiles handheld devices HD / 3D video support. Speed USB3.0 interface also makes it possible to transmit multimedia content, including video, audio and metadata. Given the mobiles handheld device introduced USB3.0 specification, system integrators will no longer need to purchase additional HDMI connector, the connector is not only cumbersome, and does not provide battery charging function when connected.

Other interesting video industry, including the use of the model simultaneously connect multiple displays to convey each display different content, and other interfaces can not support this application. USB3.0 also supports two-way sync content stream.

There is no theoretical limit on the number of channels can be transmitted via a physical connection. USB3.0 bandwidth to support up to about 500 channels of DVD-quality video (via 3Gbps pipe up 6Mbps) and about 100 channels of HD-quality video (via 3Gbps pipe up 30Mbps).

Allow the handheld device into a larger display and keyboard new applications (such as webtop) will require faster connectivity solutions, to provide a seamless user experience. Due to increased bandwidth and low-power features, USB3.0 is very suitable for such applications. In addition, the future display (such as TVs and monitors) will no longer need to be "intelligent" (multifunction). These displays can be connected to the phones in order to provide "smart" (multifunction) and drive the display.

USB3.0 will work with existing mobiles device interface solutions (such as MHL and HDMI) competition, but USB is clearly a more popular, the use of a wider range of interfaces. USB3.0 to meet the HD content on mobiles handheld devices awaited demand, and is designed and positioned for HD / 3D content delivery and use of the ideal solution.

 
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