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The CHiQ50Q2N is the flagship product of the second generation of the Changhong CHiQ series. The overall appearance is based on a tough design language. The base design resembles a bridge, made of aluminum alloy, lightweight yet stable. Each "pier" is fixed on the fuselage with two screws, and the assembly is simple and convenient.
The CHiQ50Q2N uses a narrow bezel design with a black border framed with metal brushed inner rings to give people a feeling of extremely narrow frame in the TV screen. The metal drawing on the lower frame of the TV is relatively wide, and the breathing light is hidden inside the CHiQ logo. At the bottom of the TV panel is a hidden print gun. The audio of the TV stereo is imported into the front of the TV through this setting, which plays a role in increasing the audio and television effects of the TV.
The figure below shows the actual measurement of the CHiQ50Q2N frame. Watch 50Q2N in the state of the screen, and see its visually narrow border. In the information screen state, the black frame of the inner frame of the frame is integrated with the screen, leaving only the external silver brushed frame. 
The following is a 50Q2N frame survey, you can see the thickness of each frame. The first three are close-ups, the last one can see the width of the frame relative to the fuselage. 
50Q2N has an efficient external interface and supports higher protocol standards. One of the USB3.0, HDMI2.0, MHL protocol support HDMI interface for the future long-term expansion left a foreshadowing. And I believe that the conscience of the cancellation of the VGA interface (in the main light and multi-exhibition environment, the elimination of this kind of heavy backward interface is just around the corner). 
However, there are a few points where you need to give up. One, SD card slot and CI/CA card slot are together, and insert downward, there is probability that causes SD card to drop to CI/CA card slot. Second, the power socket must be perpendicular to the fuselage (although the power cord does a right angle design), why can not be inserted into the fuselage side of the cable socket, reducing the TV "effective thickness." Third, the cooling holes remain at the top of the fuselage, although the rise of hot air helps to dissipate heat, but it's really easy to fall ash (dust is falling down).
Worthy of praise, the expansion interface is directly exposed, easy to plug in, (Q2C has a module slot, but an external USB controller on the module, the slot cover can no longer be installed) 
TV Hardware
One, remote control
50Q2N adopts CHiQ series standard minimalist remote control, 8 function keys + direction keys (switch key, voice key, home key, setting key, volume +, volume -, return key, OK key, four direction keys). The power supply uses two No. 7 batteries, RF remote control (set the key and volume can be reduced when the power is turned on). Matte material surface, enamel shape and comfortable grip. The glossy design on the keys makes it easy to grind.
Second, TV chip
After testing, the 50Q2N uses the MT5508 chip. The chip's CPU frequency is dual-core 1.3GHz, and the graphics processor GPU is quad-core. 
Third, the mobile chip _ Rubik's cube CHiQ magic products, using the RK3288 mobile chipset, which uses an independent quad-core Cortex-A17 architecture, the biggest feature is that it directly supports 4K resolution. The main parameters are as follows (parameters from the network). 
Devices using the RK3288 mobile chip are mainly part of the product lines for certain second-tier flat-panel brands in 2014, such as the original M11 Pro and Taipower P90HD. In the same year, there were also some boxes that use the chip, such as the Tamron D8. The security Bunny can run up to about 40,000, and the performance is still very strong. Given that this is a CHiQ Cube generation product, we also hope to have a more amazing configuration in the CHiQ Cube second generation product.
Video decoding capability
With a strong hardware configuration, televisions use video to watch, and of course they have to perform rigorous video playback capability tests. Different from other evaluation parties (the test video playback capability uses video clips), the author directly uses the complete video (blue original disc, high-definition full video, etc.). Therefore, it is closer to the actual use of consumers.
The following is the test situation for some sources, for reference use. The use of 2T mobile hard disk in the test also indirectly demonstrated the Q2N USB expansion capability. The actual test can get some video files that are seen everyday, and CHiQ's Q2N can play perfectly. 
Among them, in the use of a Samsung surface model to play the tears of steel, directly caused the TV stalled, the TV automatically shut down. It can also be seen that in some respects, foreign brands cannot be blindly believed.
Audio performance test
First, the screen shows
The most important part of the TV is the screen, using some test pictures to test the TV screen purity, contrast, 256 grayscale, grayscale performance. The actual test results are shot and illustrated.
After understanding 50Q2N adopts LG's screen.
First, use a solid color to determine the uniformity of the screen light emission. Using the following solid color image, we can see that the screen has a uniform luminosity under each solid color. Especially under the black and white color, there are no bright blocks and dark blocks. 
Followed by the use of contrast test pictures, where the original picture and the 50Q2N performance pictures for comparison (also test every computer monitor), the author's Lenovo notebook 123 contrast color block display is black, and 50Q2N the same performance.
However, the color of the 50Q2N screen in some color patches is a bit discolored, and it is not clear why this phenomenon occurs. This phenomenon also appears in the 265 grayscale test.
(The left side is the original image, the right is the performance of the original image on 50Q2N, limited to the shooting tool, may see some deviation; on the contrast test, the next is the grayscale test) 
The two pictures below are real shots of Samsung 2W multi-surface TV. As can be seen in the figure, the curved TV does not suffer from color bursts in certain blocks of Q2N in the contrast test picture. In the 265 gray scale test, the situation is similar. If the color of the color block is changed, the overall contrast and grayscale performance are similar. 
When using the grayscale test, it can also be seen that the ribbon has a more distinct segmentation area, which forms a certain gap with the smooth transition of the computer monitor ribbon. 
The following figure shows the performance of Samsung's curved surface television ribbons. It is still found that a satellite TV ribbon also has a segmentation area, but the segmentation area is smaller than that of Q2N, which means that the same ribbon Samsung TV has more segmentation lines than Q2N. Based on the principle of smoothing the smooth grayscale reduction ability of excessive months, it is concluded that Samsung's curved TV grayscale reduction capability is better than that of Q2N. 
The video playback problem, when tested with Transformers, reveals that the performance of the metal is slightly less. The above-mentioned Samsung's ability to perform on metals is slightly better than that of Q2N. The root cause should be the warm screen used. In addition, when looking for a poor quality MP4 format video test, you can see that Q2N's optimization ability is moderate, and there is a certain gap between Samsung's high-end brands, but the overall is within an acceptable range.
Second, audio performance
Thanks to the Q2N sunken speaker structure, the back of the body can be directed to the front of the TV, increasing the realism of the sound. The sound produced by the sound cavity of the body purchase is mixed with the sound presented to the user after refraction, and the stereo effect is enhanced.
System UI Design Experience
First, the boot time
In the case of complete power off, from the press of the remote control power button to the TV interface skipping the SMART home interface, it is regarded as a full boot. Q2N needs 30S months, which is still too slow compared to the 18S of the same door brother Q2C.
In the standby state of the remote controller, the remote controller is turned on and can quickly enter the system. And before the standby content.
Second, UI style
The Q2N overall system UI style is the CHiQ II standard system UI style. The overall logic for the dock (main menu) + secondary submenu, inspired by the three-house life. The following figure shows the dock (main menu) below the CHiQ II screen. 
Third, the background program
In the Q2N system, the background running of the program is still very practical. When using a program, the user can directly use the remote control main menu key to open the dock (main menu). At this time, the background of the previous application is displayed behind the dock (main menu), the user can perform other operations, and even open other After the application, switch to the previous application via the dock. The overall feeling is a bit like the tombstone mechanism used by IOS's back office. The following figure shows the application background. 
Fourth, TV stewards
TV steward is an optimization setting application that comes with Q2N and can be used to complete TV memory optimization. The automatic diagnosis function can only diagnose hardware and network problems. Network cleanup diagnostics can also give users a reference to the network connection; when the hardware really has a problem, can this diagnosis work? (In case of hardware problems can not boot it?)
Compared to TV stewards, the boot-to-dive function is actually very useful. You can set the application to turn on after the TV is turned on (after power off completely and then turned on again). And other child locks, TV locks are also very user-friendly.
Evaluation summary
Through the above experience of the CHiQ50Q2N. It can be found that there are many bright spots on the Q2N design level, such as the narrow border of the information screen and the sinking hidden speakers, all of which can bring a good user experience. Support for Bluetooth 4.0 will also bring a very strong fast station type to the TV itself. And forward looking to cancel the VGA interface. The design of the power line interface is contrary to the concept of light and thin. Bridge-style pedestals personally feel that there are too few things presented on the user's side, and they always feel less secure.
There are many clever places in the system design, such as the background running of the application. The dock (main menu) automatically changes the area according to the user's frequency; however, some of them also indirectly increase the user's learning cost. Another point is that the system icons are inconsistent with the style of the installed third-party icons, causing a decline in the user experience. If the system has no way to make third-party icons follow their own style, then there is a way to cater to third-party icons.
The overall performance of Q2N is excellent. Compared with foreign brands, high-end products also have advantages and advantages. The overall quality also reflects Changhong's high-end products' capabilities. 
Changhong CHiQ second-generation comprehensive evaluation: original "M+ dual-core" technology
Changhong CHiQ second-generation comprehensive evaluation: original "M + dual-core" technology. Some time ago, Changhong launched an exclusive "M+ dual-core technology" to launch the CHiQ second generation TV. As the main product of Changhong's CHiQ series, its appearance and performance are superior to those of the same type.
TV interface
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