Use for data cable for sex
By 2000, most cable providers in the US were offering some form of digital cable TV to their customers.Digital cable technology has allowed cable providers to compress video channels so that they take up less frequency space and to offer various two-way communication capabilities.
Technically there can be up to 1024 subchannels in a physical channel, though in practice only a few are used (as the bandwidth must be divided among all the subchannels).On many boxes with QAM tuners (most notably the DVR boxes), high definition versions of local channels, and some cable channels are available.Digital cable allows for the broadcast of EDTV (480p) as well as HDTV (720p, 1080i, and eventually 1080p).Using the same technology General Instrument (GI) demonstrated the digital transmission of multiple high quality standard definition programs in a 6 MHz cable channel.In the 1990s cable providers began to invest heavily in this new multi-channel digital TV technology to expand the number of channels and services available to subscribers.There are two ways providers try to make this easier for consumers.
The first, accomplished through PSIP, is where program and channel information is broadcast along with the video, allowing the consumer's decoder (set-top box or display) to automatically identify the many channels and subchannels.
Some MATV systems may carry 8-VSB and QAM signals, mostly in apartment buildings and similar facilities that use a combination of terrestrial antennas and cable distribution sources (such as HITS or "Headend in the Sky", a unit of Comcast that delivers digital channels by satellite to small cable systems).
Digital cable channels typically are allocated above 552 MHz, the upper frequency of cable channel 78.
This has enabled digital cable providers to offer more channels, video on demand services (without use of a telephone line), telephone services, high speed internet services, and interactive television services.
In addition, digital cable technology allows for error correction to ensure the quality of the received signal and uses a secure digital distribution system (i.e.
By contrast, analog cable transmits programs solely in the 480i format (the lowest television definition in use today).