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Diffstat (limited to 'Documentation/media/uapi/dvb/intro.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/intro.rst | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/Documentation/media/uapi/dvb/intro.rst b/Documentation/media/uapi/dvb/intro.rst index aeafc9ab96c1..fbae687414ce 100644 --- a/Documentation/media/uapi/dvb/intro.rst +++ b/Documentation/media/uapi/dvb/intro.rst @@ -33,19 +33,19 @@ use ioctl calls. This also includes the knowledge of C or C++. History ======= -The first API for DVB cards we used at Convergence in late 1999 was an +The first API for Digital TV cards we used at Convergence in late 1999 was an extension of the Video4Linux API which was primarily developed for frame -grabber cards. As such it was not really well suited to be used for DVB -cards and their new features like recording MPEG streams and filtering +grabber cards. As such it was not really well suited to be used for Digital +TV cards and their new features like recording MPEG streams and filtering several section and PES data streams at the same time. In early 2000, Convergence was approached by Nokia with a proposal for a new -standard Linux DVB API. As a commitment to the development of terminals +standard Linux Digital TV API. As a commitment to the development of terminals based on open standards, Nokia and Convergence made it available to all Linux developers and published it on https://linuxtv.org in September 2000. With the Linux driver for the Siemens/Hauppauge DVB PCI card, -Convergence provided a first implementation of the Linux DVB API. -Convergence was the maintainer of the Linux DVB API in the early +Convergence provided a first implementation of the Linux Digital TV API. +Convergence was the maintainer of the Linux Digital TV API in the early days. Now, the API is maintained by the LinuxTV community (i.e. you, the reader @@ -88,7 +88,7 @@ Conditional Access (CA) hardware like CI adapters and smartcard slots Not every digital TV hardware provides conditional access hardware. -Demultiplexer which filters the incoming DVB stream +Demultiplexer which filters the incoming Digital TV MPEG-TS stream The demultiplexer splits the TS into its components like audio and video streams. Besides usually several of such audio and video streams it also contains data streams with information about the @@ -124,8 +124,8 @@ 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 -the DVB demodulator. The demux device gives you control over the PES and -section filters of the hardware. If the hardware does not support +the Digital TV demodulator. The demux device gives you control over the PES +and section filters of the hardware. If the hardware does not support filtering these filters can be implemented in software. Finally, the CA device controls all the conditional access capabilities of the hardware. It can depend on the individual security requirements of the platform, |