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Link Research Launches LinkHD Wireless Camera System

Low-delay, wireless camera system for all HDTV formats (September 09, 2005)

LinkHD Wireless HD Camera System

LinkHD Wireless HD Camera System

Link Research will formally launch LinkHD, its wireless camera system for all HDTV formats at IBC 2005.

LinkHD is a lightweight unit that can be attached to any standard broadcast camera with an HD-SDI output. It has a control panel with a colour display and a menu system that make it easy to set up the encoder and configure the system for operation.

Signal delay is the key feature for wireless cameras, especially if they are to be used for live sports productions. LinkHD uses Link's FPGA -based MPEG2 encoding and decoding technology, optimised for ultra-low signal delay with no loss of picture quality.

The LinkHD system will have an end-to-end video delay of less than 100ms, making it suitable for use alongside wired HD cameras for live broadcast productions.

Link Research has designed LinkHD to be High Definition through the entire signal chain, that is to say, the full resolution of the original signal HD signal is transmitted without conversion to SD.

The LinkHD system uses Link's own COFDM-based modulation to give a robust signal, with receive diversity featuring both packet diversity and maximum ratio combining to provide unmatched levels of coverage in the area where the camera is operating. It will give full HD operation yet with the robustness of Link's award-winning SD systems.

The power consumption for LinkHD is below 20 watts, which means that the cameras can work for long periods without stopping to change batteries.

Link Research will be taking orders at the show for delivery Q1 2006.

Technical Data For LinkHD
Inputs: HD-SDI, ASI, Line level stereo pair (Lemo), Mic/line stereo pair (2x XLR)
Outputs: RF, ASI
Data and control interfaces: RS232 and USB
Bit rate: 18 - 50 Mb/s
Bandwidth: 20MHz or 10MHz
Frequency range: 1.95 to 2.7 GHz or 3.4 - 3.58 GHz
Operating Modes: HQ mode and rugged mode
HD formats supported: 1080i 59.94Hz, 1080i 60Hz, 1080i 50Hz, 720p 59.94Hz, 720p 60Hz, 720p 50Hz. Support for 24Hz, 23.976Hz and 25Hz progressive formats and their 48Hz and 47.952Hz segmented frame equivalents will be added by firmware upgrade in Q1 2006.
Dimensions: 116mm x 48mm x 160m
Weight: 995g

About Link Research
Link Research was started by David and Len Mann, to produce equipment for the field of professional TV. The company manufactures encoders, encoder/modulators and the LinkXP wireless camera system, which won the IABM's Peter Wayne Award for Design and Innovation 2002.

Link's customers now include many big names in broadcasting, such as the BBC, BT, ITN, Sky News, ABC, NBC, CBS and NTL. The company has a network of over 30 distributors and opened an office in California USA in April 2004.

Link Research was given the Queen's Award for Enterprise, for Innovation in 2004. Link Research is now part of the Vislink PLC Group.

For more information please see


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Related Keywords:Link Research, LinkHD, wireless camera, encoder, decoding, COFDM,

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