TV

From Things and Stuff Wiki
Revision as of 18:37, 25 December 2019 by Milk (talk | contribs) (a move)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search


General

total mess, collated from three articles, to sort

TV

to sort out




  • Phasor is a demo running on a custom minimalistic ATmega88-based demo platform that generates a composite video signal (PAL).


  • https://en.wikipedia.org/wiki/Amateur_television - the transmission of broadcast quality video and audio over the wide range of frequencies of radio waves allocated for radio amateur (Ham) use. ATV is used for non-commercial experimentation, pleasure, and public service events. Ham TV stations were on the air in many cities before commercial television stations came on the air. Various transmission standards are used, these include the broadcast transmission standards of NTSC in North America and Japan, and PAL or SECAM elsewhere, utilizing the full refresh rates of those standards. ATV includes the study of building of such transmitters and receivers, and the study of radio propagation of signals travelling between transmitting and receiving stations. ATV is an extension of amateur radio. It is also called HAM TV or fast-scan TV (FSTV), as opposed to slow-scan television (SSTV). SSTV is a method of transmitting still images over radio, when it is not possible to send video.


  • https://en.wikipedia.org/wiki/Slow-scan_television - a picture transmission method used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color. A literal term for SSTV is narrowband television. Analog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per second (in the NTSC, PAL or SECAM color systems), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth. It is a much slower method of still picture transmission, usually taking from about eight seconds to a couple of minutes, depending on the mode used, to transmit one image frame. Since SSTV systems operate on voice frequencies, amateurs use it on shortwave (also known as HF by amateur radio operators), VHF and UHF radio.








to sort

  • QMagneto is an EPG (Electronic Program Guide) which displays current and future TV programs. It can also program the recording of broadcasts by calling an external program like VLC or mencoder. It is possible to record programs from a BOX (French Neufbox or Freebox) or a DVB-T device.



Articles

Ratings

DVB TV






  • UV4L - UV4L was originally conceived as a modular collection of Video4Linux2-compliant, cross-platform, user space drivers for real or virtual video input and output devices (with absolutely no external difference from kernel drivers). While still preserving the original intentions, UV4L has evolved over the years and now optionally includes a generic purpose Streaming Server plug-in, especially made for IoT devices, that can serve custom web applications that can make use of a number of standard and modern built-in services for Real-Time Communications such as encrypted, bidirectional data channels, audio and video streaming or conferencing over the web. UV4L also provides a RESTful API for the developers who want to implement their own custom applications.


w_scan -ft -c [country_code] > ~/channels.conf

Viewing