Since its founding, IMT has gained a reputation as a provider of reliable, leading-edge microwave systems that have broad appeal across numerous industries.
IMT has played a major role in driving the transition of video transmission technology from analog to digital platforms. Along the way, it has recorded numerous technical achievements, including the following:
- Developed the first truly integrated transmitters with multiple modulation formats, e.g. ChannelMaster TX and Newscaster VT2;
- Developed a high performance central receiver with Ethernet interface, multiple modulation formats and optional spectrum viewer;
- First to demonstrate the advantages of digital transmission for electronic newsgathering;
- First to use VSB modulation in a digital microwave link;
- Developed digital transmission techniques for use over conventional analog links, e.g. the Analog Coder;
- First to demonstrate IP file transfer capability from a news vehicle.
IMT pioneered the implementation of Coded Orthogonal Frequency Division Multiplexing (COFDM) modulation. COFDM is a transmission technique that combines encoding technology with OFDM (Orthogonal Frequency Division Multiplexing) modulation to provide the low latency and high image clarity required for real-time live broadcasting video transmissions.
Unlike other modulation schemes, COFDM maximizes its parameters to provide uncompromised reliability, even in the face of interference and other factors that can degrade transmissions. IMT’s experience with COFDM technology has allowed it to develop robust integrated solutions that deliver reliable video footage captured from both aerial and ground-based sources to fixed and mobile receiver locations.
IMT has also incorporated new approaches to the integration and optimization of antenna array design, adaptive digital signal processing and maximum ratio combining (MRC) techniques. In addition, IMT has played a lead role in introducing systems that allow the wireless broadcast of video to multiple disconnected devices, both fixed and mobile. This real-time viewing and sharing of video across a wide area adds an additional layer of safety and security to law enforcement, emergency communications, and critical infrastructure operations, and can improve overall situational awareness.
Like IMT, Vislink has a strong heritage in ENG, SNG and live sports broadcasting. They pioneered the first portable solid state portable microwave systems more than five decades ago, precipitating a major shift in the way fast-breaking news events would be covered.
Vislink’s legacy of broadcast microwave innovation includes firsts such as:
- short haul 40 GHz millimeter technology;
- dual RF carrier analogue & digital microwave links;
- digital COFDM ENG systems;
- compact wireless camera systems;
- light-weight carbon fibre portable satellite systems;
- the industry’s first fully integrated software defined portable MPEG-2/MPEG-4 (H.264) systems; and
- the first wireless 4K UHD (Ultra High Definition) camera system
Vislink’s brands have been involved in the coverage of high-profile sports events for decades, for motorsports including Le Mans, and have enjoyed a long standing relationship with MotoGP, where Vislink not only provides on-board systems, but is also the official supplier of all RF communications. It was at the 2015 UK MotoGP World Championship that Vislink delivered the world’s first 4K UHD live wireless transmission.
Vislink’s most recent product innovation is newsnet®, a new wireless communications solution that is transforming Electronic News Gathering. Newsnet allows reporters to work in the field as if they were in the studio, with the guarantee of always getting high-quality, edited stories back to meet scheduling deadlines. It also allows producers can use multiple points of view ‘on demand’ from multiple trucks as and when required without lengthy link set up and negotiation. In short, newsnet ensures that news broadcasters can capture and deliver unique and compelling live video content that gives viewers the feeling of truly “being there.”