Sound Reinforcement System
Digital Conference Speech System
Paperless system
Video signal management system
Intelligent display terminal
High definition recording and broadcasting system
Wireless sharing and collaboration system
Centralized control system
Stage lighting
Stage machinery
Smart teaching system
Video conferencing system
Intelligent voice transcription
Peripheral equipment
Intelligent Conference Air Imaging Lecture Table
A product composed of touch LCD display combined with modern PC, which integrates touch display and computer operation functions. It consists of two parts, one is a touch LCD display, which has touch characteristics and display output functions; The other is a PC, also known as a computer. By integrating two parts together, a multimedia tool with functions such as touch interaction, video, audio, image, animation, and computer network has been achieved.
Display requirements:
1. Display size: ≥ 75 inches, using LED backlight source A-standard screen.
2. Display resolution: 3840 (H) x 2160 (V); Brightness: ≥ 400cd/m2; Contrast ratio: 4000:1; Visual angle: ≥ 178 °
3. The power consumption of the entire machine is ≤ 160W, and the energy efficiency in the closed state is ≤ 0.03. The entire machine must comply with the national first-class energy efficiency standard
4. Grayscale: Maximum 128 grayscale, 128 grayscale is a gradient state
5. Display contrast: 5000:1
6. Display angle (degree): 178 °
7. Display lamp life: ≥ 50000 hours
Hardware requirements for the entire machine:
1. Aluminum alloy frame, speaker, interface, button front design, speaker ≥ 2 × 10W, among which the front interface must have PC-USB3.0, TV-USB2.0 adaptive port, HDMI input interface * 1, TOUCH output interface * 1, and the front panel must have at least 7 physical buttons, covering functions such as home page, volume up and down, menu, energy saving, and on/off, and have English identification for quick use by teachers.
2. The side of the entire machine must have commonly used ports such as RF TV port * 1, CVBS port * 1, earphone EAPRHONE * 1, SD card * 1, VGA AUDIO IN * 1, VGA computer port * 1, HDMI input * 1, USB2. port * 1, etc.
3. The whole machine is equipped with a one key button, which can simultaneously meet the three in one requirements of TV on/off, computer on/off, and energy-saving standby button. It also has a switch to choose whether to enable or not, making it easy to operate. In energy-saving standby mode, the screen can be awakened again by tapping; No need for more buttons to prevent teachers from misoperating.
4. The whole machine adopts single or multiple touch points, with a touch resolution of 32767 × 32767 and a fine pen touch writing accuracy of ≤ 2MM;
5. With wireless screen transmission: working frequency of 2.4G or 5G, working distance of 10 meters (without obstruction); (Optional)
Android system configuration and requirements:
1. Equipped with embedded Android 8.0 or above system, with a configuration requirement of no less than the main frequency: CortexA53 * 4 1.5GHz RAM of 3GB or above, storage capacity of 32GB. Under this system, functions such as whiteboard writing, Office software usage, multimedia playback, electronic manuals, and web browsing can be achieved, forming a dual operating system security backup with the built-in computer. The electronic whiteboard software in the Android system can write in two different colors, big and small, and the writing comes with a pen tip, making it easy for teachers to distinguish between annotations and written content.
2. Gesture eraser: In embedded systems, the whiteboard must recognize fists or palms as erasers in a multi-point writing state, and be able to recognize the size of the gesture eraser based on the contact area.
3. Under the embedded Android operating system, it is possible to automatically classify courseware files read by TV multimedia USB, and quickly search for documents, music, videos, images, and other files. It must be able to retrieve Office documents and recognize Word
1. Unique DCP/MOVE digital processing and transmission technology, no matter how many devices are undisturbed, all digital transmission overcomes the attenuation problem of long-distance transmission. The transmission distance of six core wire can reach 250 meters, and the transmission distance of network cable can reach 150 meters;
2. Long distance transmission has no impact on sound quality and can achieve CD level sound quality;
3. Built in environmental noise canceller (AEC), which can effectively eliminate local noise;
4. Built in digital equalization circuit, which can significantly improve the sound pressure level of the venue;
5. Built in adaptive feedback suppressor (AFC), which can effectively prevent whistling;
6. The wireless conference host interacts with voice and data through wireless transceivers, using 2.4G all digital frequency hopping (DSSS) modulation communication technology and ISM frequency band to ensure that the audio delay is less than 5.5ms;
7. The connection method adopts a 6-core DIN shielded cable or a 2-meter Category 6 Ethernet cable, which can effectively prevent electromagnetic interference to the line;
8. Optional functions (the system host supports dual machine hot backup, with strong system stability, suitable for large conference center applications);
9. Adopting ID addressing, customizable numbering, automatically detecting the online list of hosts and units upon startup, and real-time monitoring of system operation;
10. Pioneering a 4.3-inch full-color touch screen with bilingual information display in Chinese and English, with dual functions of system navigation display and centralized control; (At the request of the bidder, samples can be provided for on-site demonstration during bidding)
11. Built in voting motherboard with data management functions for check-in, voting, election, scoring, and response;
