=====================
The reader of this document is required to have some knowledge in the
-area of digital video broadcasting (DVB) and should be familiar with
+area of digital video broadcasting (Digital TV) and should be familiar with
part I of the MPEG2 specification ISO/IEC 13818 (aka ITU-T H.222), i.e
you should know what a program/transport stream (PS/TS) is and what is
meant by a packetized elementary stream (PES) or an I-frame.
:alt: dvbstb.svg
:align: center
- Components of a DVB card/STB
+ Components of a Digital TV card/STB
-A DVB PCI card or DVB set-top-box (STB) usually consists of the
+A Digital TV card or set-top-box (STB) usually consists of the
following main hardware components:
-- Frontend consisting of tuner and DVB demodulator
+- Frontend consisting of tuner and digital TV demodulator
- Here the raw signal reaches the DVB hardware from a satellite dish or
+ Here the raw signal reaches the digital TV hardware from a satellite dish or
antenna or directly from cable. The frontend down-converts and
demodulates this signal into an MPEG transport stream (TS). In case
of a satellite frontend, this includes a facility for satellite
.. _dvb_devices:
-Linux DVB Devices
-=================
+Linux Digital TV Devices
+========================
-The Linux DVB API lets you control these hardware components through
+The Linux Digital TV API lets you control these hardware components through
currently six Unix-style character devices for video, audio, frontend,
demux, CA and IP-over-DVB networking. The video and audio devices
control the MPEG2 decoder hardware, the frontend device the tuner and
- ``/dev/dvb/adapterN/caM``,
-where ``N`` enumerates the DVB PCI cards in a system starting from 0, and ``M``
-enumerates the devices of each type within each adapter, starting
+where ``N`` enumerates the Digital TV cards in a system starting from 0, and
+``M`` enumerates the devices of each type within each adapter, starting
from 0, too. We will omit the “``/dev/dvb/adapterN/``\ ” in the further
discussion of these devices.
API include files
=================
-For each of the DVB devices a corresponding include file exists. The DVB
-API include files should be included in application sources with a
+For each of the Digital TV devices a corresponding include file exists. The
+Digital TV API include files should be included in application sources with a
partial path like: