What is the multi mode feature and what are its scenarios?
Multi-mode refers to the capability of a receiving card to support multiple display modes. This is suitable for scenarios where the same batch of cabinets needs to be used in different requirements. Previously, to achieve this, multiple sets of rcfgx files had to be prepared in advance, switched different files which matched for different scenarios. Now, before producing the NCP, engineers collect the user’s scenarios in advance, involving different receiving card and chip parameters. Different modes are provided for switching based on different scenarios. Users can easily switch between display modes according to different usage scenarios, allowing the LED screen to display effects configured with different parameters.
Scenarios:
- Common indoor/outdoor modes: Indoor and outdoor scenarios have different brightness requirements. While adjusting brightness rod in VMP can achieve the target but will reduce grayscale and refresh rate. The method of reducing Current Gain can achieve the desired brightness while minimizing grayscale loss, providing better display quality.
- xR/VP shooting modes: On-site, different display modes can be switched based on the content being shot. The shooting mode effect significantly improves the shooting effect of low-brightness source by greatly enhancing the low-gray refresh rate of the chips, reducing scan line issues in low-gray shooting scenarios.
What are the differences between Adaptive Frame Rate 1.0/2.0/3.0, and what are their scenarios?
V1.0: A single fixed frame rate, typically 60Hz. The performance is consistent with NovaLCT, and there is only one parameter set. (Selectable fixed rates: 24Hz, 25Hz, 30Hz, 48Hz, 50Hz, 60Hz, 100Hz, up to 120Hz). Switching to other frame rates may cause screen flickering or blackout. This function is suitable for most common usage scenarios.
V2.0: Multiple fixed frame rates (e.g., 24Hz, 25Hz, 30Hz, 48Hz, 50Hz, 60Hz, 100Hz, 120Hz, up to 240Hz). Supports independent image booster files for the above fixed frame rates. It ensures normal display when switching between these specified frame rates, but other frame rates may result to abnormal display. This function is suitable for certain rental and broadcasting scenarios.
V3.0: Multiple frame rate bands (e.g., 23-60Hz, 61-120Hz, 121-240Hz). Guarantees normal display when switching to any frame rate within the supported frame rates range, with 0.01Hz increments. This function is suitable for virtual production.
What technologies does the Image Booster include? What is the value of each?
NovaStar launched a high image quality solution fine pitch LED screens- Image boost engine. Including 22 Bit+, Precise Grayscale, and Color Management, it can restore the real world colors, making small-pitch LED screens to satisfy the requirements for high-end display from different dimensions.
22bit+ is a gray-scale coding technology developed by Novastar that combines the visual characteristics of the human eye. This technology combines the characteristics of the human eye with the new gray-scale coding design,which increases grayscale levels by 64 times.It effectively deal with the loss of low-brightness grayscale, makes it smoother, and bring better details to the image.
Precise grayscale technology implements level-by-level measurement on 16bits (65536 levels) grayscale of the driver IC.By utilizing the software algorithm, it can achieve level-by-level calibration, bring smoother transitions, improve quality on the low-grayscale display.
Color management can achieve effective control of the color of the display screen, using certain algorithm logic, and the combination of software and hardware to automatically and uniformly manage and adjust the color to ensure the display effect of the same color gamut of the image, showing the consistency of the color and the color. accuracy. Color management can accurately manage the intersection of the color gamut of the LED screen and the standard display color gamut to ensure that the color of the screen is consistent and solve the problem of color cast.
Which features have chip limitations?
Refer to this website and check VMP V1.5.0 Hardware and Software Compatibility Matrix document for more information:
Which features have requirements on receiving card model and firmware version?
Refer to this website for more information:
What is the format of 3D LUT file?
.cube is the format of 3D LUT file. COEX supports loading 17x17x17/33x33x33/65x65x65 3D LUT files.
What is low-grayscale calibration used for?
At low grayscale levels during actual operation, due to excessively narrow pulse widths (1-pulse width), inconsistent channel switching speeds cause deviations in the rising/falling edges and ON-time of different chips/LEDs compared to ideal conditions. This variation, combined with inherent differences in the luminescent characteristics of the epitaxial wafers, further amplifies discrepancies between chips and individual LEDs at low brightness levels.
Low grayscale correction technology specifically addresses uniformity variations caused by inherent chip characteristics by compensating the pulse width of individual subfields based on measured brightness differences. After pulse width compensation, the brightness of different ICs and LEDs tends to become consistent.
As the grayscale level increases, the influence of low grayscale correction coefficients on screen uniformity and brightness gradually diminishes due to subfield blending. For mid-to-high grayscale ranges, this effect becomes minimal.
Is any other calibration required after performing low grayscale calibration?
Low grayscale calibration means performing a separate calibration specifically for the low grayscale area, and the coefficients for this area affect all grayscale. After low grayscale calibration, the screen still requires a brightness and chroma calibration (or full grayscale calibration) to correct the overall display performance for all grayscale levels.
What is color replacement‘s scenario?
The color replacement feature replaces one color in the image with another without affecting other colors. For example, when producing advertising videos, only one color of a product is typically filmed. To promote other colors in the same series, re-rendering the video would be time-consuming and labor-intensive. Using the color replacement feature, the specified color in the advertising video can be directly replaced with the desired color.
Is COEX’s no rectangular limitation related to the receiving card?
No, no rectangular limitation is a function of the COEX controller. When used with receiving cards supported by COEX, this function is available.
Does the shutter fit function have requirements for the receiving card?
This feature is bound to the adaptive frame rate 3.0 feature. Therefore, receiving cards supporting adaptive frame rate 3.0, such as A10s Pro, CA50E, and XA50 Pro, are required to use the shutter fit feature.
Does the low latency feature of the receiving card have requirements for the cabinet connection?
There are no requirements for the cabinet connection wiring. The low-latency function is enabled by default on A10s Pro.
Does the low latency feature of the COEX controller have requirements for the cabinet connection?
To avoid wasting loading capacity, the topmost cabinet of each column of a single-port cabinet topology must align with the top of the canvas.
If the topmost cabinet of a column is not aligned with the top of the canvas, the loading capacity of the vacant area up to the top will be wasted.
Among the Armor series receiving cards, which ones support adaptive thermal compensation?
Only A10s Pro supports adaptive thermal compensation.
Does the cabinet rotation function in VMP have requirements for the receiving card firmware version?
The mainline version of A10s Pro, CA50E, and XA50 Pro supports this function. Other COEX-compatible Armor series receiving cards require a firmware version of V4.9.0.0 or later.
When used with COEX, which cards in the Armor series support transmitting 10bit input sources?
A5s Plus, A8s, A8s-N, A8s Pro, A10s Plus-N with version V4.6.9.0 or above, A10s Pro.
Which protocols do Art-Net, SNMP, and API respectively belong?
Art-Net and SNMP belong to the UDP protocol; API belongs to the HTTP protocol.
What can 7-color adjustment do, and what is its adjustment logic (color complement logic)?
Red, green, blue, and the three secondary colors have independent matrices. They do not affect each other and can be adjusted individually for these six components, ultimately making the performance of multiple batches of modules effects towards consistency.
In monitor interface, what defines a alarm (orange) and a fault (red)?
The system automatically determines whether an alert is a alarm or a fault based on its content, and by default, distinguishes between alarm and fault according to system thresholds.
Users cannot set thresholds. If you need to modify threshold-related information, please contact an NovaStar FAE.