Linear Systems Inc.
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Advanced Digital Video Solutions
 
December 3, 2009
DirectShow filter support for the HD-SDI product family
We are continuously working on improving our product line and adding support to interface with multiple platforms. To date our HD-SDI cards work with ffmpeg, mplayer and VLC in Linux and DirectShow filter and Windows Media Encoder (WME) support in Windows.

If there is another platform that you are interested in, please let us know. Your feedback is valuable to us!

June 1, 2009
Linear Systems ships HD-SDI Quad/i PCIe card with Windows and Linux driver support.
With support for video and de-embedded audio, the HD-SDI Quad/i allows simultaneous capture of four HD-SDI inputs. SDK also included. For more information contact info@linsys.ca

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IBC 2010 IBC 2010
September 10-14, 2010
RAI Convention Center, Amsterdam, Netherlands
Stand 2.A48
www.ibc.org
DVEO Pro Broadcast
  About Linear Systems Ltd.
 
 
 
About Us | History of Linear Systems | The Team | Technology Partners

History of Linear Systems

Tom and Linda Thorsteinson founded Linear Systems Ltd. in Winnipeg in 1979. Initially it operated as an engineering consultancy company, doing work for the mining industry, and repairing NC machines. Microcomputers were first used by Linear in 1981 when a Multibus computer "Tripper Control System" system was designed for Allan Potash in Saskatchewan. Linear developed more Potash instruments such as the Portable Ore Grade Analyzer (POGA).

 

Linear started designing iSBX modules for the Multibus as a result of this early exposure to the power of the microcomputer. Products such as the LSBX Clock and the LSBX Ram were developed by Linear and starting in 1983, for sale to the industrial computer marketplace, through a company in California called Industrial Modules. This company later became Computer Modules and continues to market Linear's Products today.

 


In 1986, as the Multibus market began to fade, Linear started to develop serial communications products to work in the IBM PC. These PC bus cards used the RS-422/485 or T1 interface standard and the HDLC protocol, and were used for wide area networking. It as at this time in the mid-1980s and early 1990s that Linear began to use the FPGA and to use DMA as a transfer engine for data. Linear developed a range of products using the HDLC protocol but found that the marketplace was changing again.

 


In 1998 Linear developed the DVB Master Send, which was the first of a series of DVB ASI cards for the IBM PCI bus. The DVB Master Receive and the DVB Master FD followed and quickly established themselves as industry standards for PCI based DVB cards. Linear's designs, which uses a half-sized card format, an FPGA for interface to the PCI Bus interface and scatter-gather DMA for data transfer, proved to be a powerful and efficient design approach. The firmware design is unique, giving minimum transmit latency and is Patent Pending. Linear now has a line of DVB Master cards with many options.

 


When these PCI cards were first introduced, the PC was not accepted as being reliable enough for the broadcast industry, but as time went on that has changed. Linear's cards and drivers have evolved to the point where reliability is extremely high, due to the many number of hours of testing and use, and are now accepted and used in critical applications.

 

Over the last two years Linear has developed application software and complete PC box solutions based on the DVB Master cards. The Time Shifter, DVB Guardian, IP Caster and the Quad Mux are now available. In addition Linear has recently developed Video over IP solutions including the ASI2IP and the MuxMaster S/A.

At Linear, we will continue to listen to its customers and to develop unique and reliable solutions for the broadcast industry.

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