What is a Video Transmitter?

Wireless video transmitter is an industrial product based on wireless video transmission technology.

Wireless video transmitter

Wireless video transmitter is an industrial product based on wireless video transmission technology.

Chinese name

Wireless video transmitter

Device Agreement

WHDI

Nature

Carrierless communication technology

Full name

Wireless HD Technology

Wireless video transmitter

The main home wireless transmission equipment protocols are WHDI, WIDI, WIFI, and UWB.

UWB (UltraWideband)

It is a carrier-free communication technology that uses nanosecond to picosecond non-sine wave narrow pulses to transmit data. By transmitting extremely low-power signals over a wide frequency spectrum, UWB can achieve data transmission rates of hundreds of Mbit / s to several Gbit / s within a range of about 10 meters. Mainly used in indoor communication, high-speed wireless LAN, home network, cordless phone, security detection, location measurement, radar and other fields.

UWB technology was originally developed as a military radar technology, and was mainly used in the field of radar technology in the early days. In February 2002, the U.S. FCC approved UWB technology for civilian use, and the pace of UWB development began to accelerate.

UWB technology-based products have matured support for 720P video files within 10 meters, and support for 1080P needs to be improved.

WiDi (Intel WirelessDisplay)

The full name is wireless high-definition technology, which realizes the wireless connection of computers and display devices through WiFi signals. After Intel released the Capella mobile platform, WiDi technology has been able to be used in related products. In the IT field, there are many devices that support wireless transmission, such as wireless keyboards and mice, wireless network cards, and wireless headsets. This also reflects that consumers have a very high demand for wireless devices. For notebook users, they only need to be equipped with Intel Centrino Advanced-N 6200/6300/1000 wireless network card to be able to connect wirelessly via wireless receiving adapter and display device. The realization principle of WiDi is that the notebook first sends out a wireless signal through a wireless network card, and then there will be a wireless receiving device on the TV side to receive the WiFi signal. The wireless receiving device transmits the signal to the display device via HDMI or A / V cable.

Wi-Fi

It is a technology that can wirelessly connect terminals such as personal computers and handheld devices (such as PDAs and mobile phones). Wi-Fi is a brand of wireless network communication technology, which is owned by the Wi-Fi Alliance. The goal is to improve interoperability between wireless network products based on the IEEE 802.11 standard. At present, most people confuse Wi-Fi with IEEE 802.11. It even equates Wi-Fi to the wireless Internet.

The price range of audio and video transmitters based on WIFI technology is widely distributed, ranging from several hundred yuan to several thousand yuan, mainly due to performance, quality, and background and application areas. Generally, products developed based on education or conference systems are relatively expensive .

WHDI

(Wireless Home Digital Interface) sets a new standard for wireless high-definition video connections. It provides a high-quality, uncompressed wireless connection. Working in the 4.9GHz ~ 5.875GHz band, 20MHz or 40MHz channel, in line with the global 5GHz spectrum regulations, the range is within 30 meters, can penetrate the wall, and the delay is less than 1 millisecond. WHDI supports new devices. Consumers can connect their A / V devices and consume content. The scope can cover the entire home. WHDI allows users to connect any source in the home to any location for display. Using WHDI, the TV in the living room can display the Blu-ray player in the bedroom, the high-definition DVD player, the kitchen TV can display the content on the home office PC, and the game entertainment can play on the projector in the basement without moving the game console from the child Their bedroom or basement. WHDI is a new standard that facilitates uncompressed HD video transmission and separates video players. Multiple indoor HD video connections use a revolutionary video modem to support the entire home.

The comprehensive WHDI control protocol will enable users to centrally control all A / V devices in the home, with almost no transmission delay, and users will not encounter the problem of asynchronous sound and video. Users can also use WHDI to connect to network entertainment audio and video games. Its characteristics are: uncompressed video transmission, transmission without delay, resolution up to 1080P, support for 7.1-channel, 100K return channel, support for HDCP2.0 technology.