Over-the-Air Digital TV with Linux
Interview with Jack Kelliher, CEO and Cofounder of pcHDTV
AS: How did you become interested in building HDTV cards for Linux? Was it because the technology is open source, or was it a personal interest?
JK: Actually, both. I had an early HD card for Windows but almost exclusively used Linux and wanted one for Linux. As there were open-source MPEG players available and a niche market for Linux, I felt that it was a very doable project that could grow into a small business.
AS: What have been your challenges in making the pcHDTV products successful?
JK: Of course, the first challenge was developing the card, drivers and modifying a player to handle HD playback, followed by problems in production. We thought we had a fairly small window of opportunity, as the FCC was planing to enforce the broadcast flag [a set of status bits sent in the data stream of a digital television program that indicates whether the data stream can be recorded, or if there are any restrictions on recorded content], which would not have been very compatible with Linux. Luckily, the Supreme Court struck this down, although Congress has considered it a couple times since.
AS: What do you find exciting about Linux after many years of working with the technology?
JK: The extraordinary advances in open-source software, like MythTV, and very usable video viewing, editing and animation applications—even medical applications, like MRI viewers.
AS: How do you see your products evolving?
JK: We want to support PCI Express in the future, and we are considering a small USB product as well.
AS: What are your thoughts about targeting your product for European users (non-ATSC users)?
JK: We have been and are continuing to work on a world-wide solution, and this has been using up most of our time. The project is fairly large for us, but we hope to introduce something by the end of the year.
pcHDTV HD-5500: pchdtv.com/hd_5500.html
Hauppauge WinTV-HVR-950: hauppauge.com/site/products/data_hvr950.html
Hauppauge WinTV-HVR-1800: hauppauge.com/site/products/data_hvr1800.html
Alolita Sharma has been involved with open source since the early days of Linux. As a software engineer and industry consultant, she promotes disruption through open source. She is cofounder and CEO of Technetra and OSI Board Member. She can be contacted at email@example.com.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide