• 1529649631

    What is the relationship between FPS, V-Sync and Motion Blur

    FPS is the definition in the image field of the number of frames per second transmitted on a screen. FPS is a measure of the amount of information used to save and display dynamic video. The more frames per second, the smoother the action displayed will be. A movie plays at 24 frames per second, which means that 24 frames are projected on the screen in one second. If you pause the movie, you will find that most of the frames are blurred, because each frame in the movie is a picture formed by the camera shutter exposure for 1/24th of a second. That is, all the information in this 1/24th of a second, are recorded on this frame. But the principle of the game is different. The game screen is rendered in real time by the engine, and each resulting frame is a still picture of a certain moment, but the information about the displacement between the two frames does not appear on your screen. To compensate for this shortcoming, many game manufacturers also provide a “motion blur” feature in the settings: that is, they add a blurring effect to each frame to simulate a dynamic look and feel like a movie. When the game frame rate is low, turn on the “motion blur” to reduce the feeling of lag to a certain extent. But even so, the game is still difficult to achieve the smoothness of the movie considering the game is not only to watch, but more …

  • What is Resolution

    Resolution is basic element to intuitively evaluate the quality of video and the performance of the display devices. This parameter general represents the definition of the picture and how many details one devices could provide to viewers. Resolution is a parameter which defines the precision of the video. As we all know that the whole image that has been provided by the display devices are combined with enormous tiny pixels that the more pixels one screen could contain, the more details it could provide to the viewer. There are several types of the standard resolution that has been adopted in most of our display devices in the modern era. Except from several low definition such as 480P or 360P, the resolution that is higher than 720P could be generally concluded as the high-definition(HD) picture. 720P which has a horizontal pixel of 1280 and a vertical pixel of 720 is able to deliver a total number of 921 thousand pixels. Considering it is an boundary between the definition of HD and ordinary picture in modern standard, it could provide the viewer with the picture that contains most of the information comparing to the reality, for example, the loge of passersby’ coat or the clear license plate of the car. The next higher standard about the resolution is 1080P which enjoys a pixel of 1920*1080 and a total number of pixels of 2073600. Theoretically, it contains a double number of pixels within the picture, so it is qualified to provides double details …

  • Independent Audio Output

    What is the difference between HDMI to VGA and VGA to HDMI? Can they be used interchangeably?

    We will further discuss the relationship between HDMI and VGA. When connecting a signal source to a display device, if the interface is the same, you can directly purchase a cable to connect, but what if the interface is different? For example, what if the source is HDMI and the monitor is a VGA connector? This is the time to use a converter. 1、HDMI to VGA HDMI to VGA cable comes with a power supply interface, compared to the converter, the conversion cable can be directly connected without additional conversion, one cable easily converted to HD large screen, simple and convenient, suitable for Xiaomi boxes, laptops, set-top boxes, PS3 and other HDMI interface devices, connected to VGA interface devices such as TVs, monitors, projectors and other devices to convert HD large screen picture. HDMI to VGA converter is a digital signal to analog signal conversion, the signal source is the HDMI interface, the display device is the VGA interface which means that you need to prepare a VGA cable to connect. But because the VGA does not support audio transmission, you won’t have any sound in your terminal devices even though you got a HDMI interface. You need to connect another audio device or directly buy a converter with audio and video synchronization conversion. As for the resolution, HDMI to VGA converter support 1920*1080P resolution and 60Hz refresh rate. 2、VGA to HDMI VGA to HDMI is a conversion from analog signal to digital signal, which requires that the signal source …

  • Audio Video Synchronization

    What is the merits and drawbacks between analog signal and digital signal?

    We’ve all known that VGA interface adopted the analog signal whereas HMDI interface uses digital signal for transmission. So what are the relative advantages and disadvantages between these two types of signals? 1. Analog Signals The advantages of analog signals are intuitive and easy to implement, but there are two main disadvantages.First of all, it has a poor confidentiality considering analog signals, especially microwave and wired open-line communications, can be easily eavesdropped. As soon as an analog signal is received, it is easy to obtain the content of the communication. The next deficiency about analog signal is its weakness in anti-interference. During the transmission of the electrical signal, it is subjected to external and internal noise interference within the communication system, which makes it difficult to separate the noise from the signal, thus degrading the communication quality. The longer the line, the more noise accumulates. 2. Digital Signals Advantages of digital transmission First of all, digital signal has a better confidentiality than analog signal. And digital signal improves anti-interference capability that can be mixed with noise during transmission, and the input signal voltage can be measured using the threshold voltage (called the threshold value) constituted by the electronic circuit. At last, an integrated digital communication network can be constructed. With time-division switching, transmission and switching are unified to form an integrated digital communication network. Disadvantages of digital signals Occupies a wider frequency band. Because the line is transmitting a pulse signal, the transmission of digital voice information all the way …

  • USB Type C

    What is USB Type-C

    The famous Type-C interface. It was first introduced in August 2014, using the USB 3.1 transfer standard. The application of this standard meant that a transfer rate of 10Gbps (about 1.2GB/s) could be achieved by using this small connector with the width less than 1cm . Furthermore, USB-Type C overcomes a problem that has been accompanied with data interfaces since its dawn time. That is, at last, the Type-C port no longer possess the front and the reverse which means that it supports the random plugging. In addition, the compatibility of the Type-C interface is not to be underestimated. In addition to the traditional connection to cell phones, Type-C also supports computers, game consoles and other mass storage devices and docking stations. This is mainly due to the strong support for Type-C from the world’s leading electronics companies, including Apple.

  • What is USB Type-B

    The second type of interface that falls under the standard USB interface is the USB Type-B, which is typically used for larger peripherals such as printers and scanners. Considering these kind of devices requires a higher power supply, they constantly equipped with a extra power supply port. As for the inner structure, USB Type-B also has four pins, and in fact, the electrical characteristics of USB-Type B are identical to those of USB-Type A. USB Type-B is designed in such a shape to prevent users from using the interface incorrectly. The design is so shaped, presumably to prevent short-circuiting due to incorrect use of the interface by product users. Interestingly, a very awkward situation occurred with the USB Type-B update to the USB 3.0 era. In the introduction of Type-A interface, we found that the space within the initial generation of Type-A interface is very abundant, so the extra 5 pins directly “squeeze” into the original designed interface without any changes of the size or the appearance of the USB Type-A face. On the other hand, the USB-Type B, perhaps the original designer did not even consider that it will be updated, the narrow internal space for the extra five pins have nowhere to put. So the USB 3.0 version of Type-B was given a “crown” to accommodate the five pins.

  • Type-A

    What is USB Type-A

    USB is the abbreviation of Universal Serial Bus, a technology first proposed by Intel and Microsoft. Generally speaking, the USB ports we use today are divided into three categories, which we call Standard USB, Mini USB, and Micro USB. Now let’s introduce these three main types of USB ports one by one.   Standard USB Type-A interface is the first generation of USB interface. Type-A has underwent a ongoing lifespan of 24 years which experienced the first generation of USB 1.0 to the latest USB 3.2. This is quite an miracle for it existed in such a fast development industry that constantly accompanied with the replacement of old version of the product by the faster and better new product. From the diagram below, we can see the initial generation of Type-A interface contains four pins. Respectively, they connect to two power lines and two signal lines. The USB 3.0 version of Type-A interface increased to 9 pins without changing the appearance of the case. As the most classic interface, Type-A is mostly used in mouse, keyboards, USB flash drives and other peripherals. As early as 2004, there were already more than 100 million USB devices in the world. In fact, the USB Type-A interface has been more than a simple interface. It is a time-honored technology that is deeply rooted in people’s daily habits. Just imagine, if one day USB Type-A were to be completely retired and all the mouse and keyboards were replaced with brand new and unfamiliar interfaces. …

  • 5A USB-C Data Cable

    Why iPhone still adopts lightning interface than Type-C

    We’ve already analyzed the differences between lightning and Type-C interface and made it clear that Type-C is relatively superior than lightning either in transmission or charging speed. On the other hand, there also exists apple’s product which has already adopted the Type-C interface such as 2015 Mac book and iPad pro. So why did apple’s most representitive product: iPhone still stubbornly uses lightning interface rather than give a chance to Type-C? First of all, Type-C interface didn’t enjoy an unparalleled advantages on mobile phone platforms considering mobile phone relies less on physical interface than its desktop or tablet companion but more inclined to wireless connection. For example, we tend to conduct business presentation or large file transmission via our laptop but hardly through our mobile phone. Thus, a Type-C interface with multiple function seems to be futile in mobile platforms. Then, Apple is a relatively closed mobile phone producer in the mobile phone industry considering its closed operating system, independent processor and unique interface which may require unique components and accessories for iPhone. And this unique demand means a huge market revenue and great cost reduction for Apple by adopting the following existing measure. To begin with, Apple vigorously conducting market campaign by stressing the unrivaled quality and compatibility of original Apple accessories. This method has been combined with the concord brand identity between apple’s product and its official accessories. With the help of these two factors, a great amount of iPhone users will would rather purchase Apple’s more expensive …

  • Type-C

    What are differences between lightning and USB Type-C

    2020 is the eighth year of Apple’s adoption of lightning interface. It is also the sixth year of USB Type-C interface’s publication. These two types of the products has been designed to replace the former generation of the interface: Apple’s dock interface and most android phones’ Micro-USB interface. Years of market prevalence has proven them as the optimum successor of the former generation. However, what are the exact differences between these two types of interfaces? The TYPE-C interface is a rotationally symmetrical connector which contains 12 pins on each sides. It can support up to 20V voltage and 5A current. Correspondingly, the lightning has eight pins on each sides which also support random plugging, and the white part is designed to insulate the pins from each other. The outermost metal actually serves as the function of grounding cable, therefore, lightning connector essentially adopted a 9-pin design. In charging and data transmission, Type-C is comparatively superior than Apple’s lightning, On the principle of charging communication skills, TYPE-C has a high-power PD charging protocol, which is the reason why Type-C interface can achieve up to 120W fast charging. On the other hand, lightning interface only support the maximum charging power of 18W which may take around two hours to fully charge a iPhone via this interface. This period could be cut into half and even faster for android phones with a Type-C interface. As for data transmission, considering lightning interface still use USB 2.0 protocol which only obtains top speed of 480 Mbit/s, …

  • DP1.2-144Hz

    How to Choose a DP Cable (part 2)

    3.The third vital factor is about the different version of DP cables. Currently, there are two types of DP cable which dominated the market. They are known as DP 1.2 and DP 1.4. Comparatively, DP 1.4 is the newest version of DP cable which enjoys the merits of wider bandwidth(32.4 Gbps) and larger compatibility of resolution(up to 4K@144Hz and 8K@60Hz). On the other hand, the old version of DP 1.2 is only 2K 144Hz, 2K@165Hz and 4K@60Hz supported. Nevertheless, there also lies a significant price gap between DP 1.2 and DP 1.4. If you only intend to purchase hardware that is under the standard of 4K@60Hz or you are satisfied with your hardware and haven’t got a plan to update your hardware in near future, DP 1.2 is far beyond your need. After all, most ordinary hardware user never requires 8K@60Hz or 4K@120Hz visual experiences. These visual levels also exceed most current graphic processor’s ability. However, if one of the readers is a heavy E-sports players who feel desperate to pursuit not only ultimate refresh rate but also ultra-resolution. A superb graphic processor should be accompanied with a cable with extra bandwidth such as DP 1.4 or HDMI 2.1. 4.The last part of this passage would like to foresee DP 2.0. On June 26, 2019, VESA had officially released the 2.0 version of DP interface. Overall, it theoretically reaches the payload of 77.37Gbps which is almost triple than the last version. Apart from that, DP 2.0 is also designed to …