IndianMascot
Core Member
I think its a two way response as all VOD content are linked to some data server and not to transponder space.
Whose property is the Set Top Box?
- Thread starter Zerox11
- Start date
Technoglitch
Core Member
Optical Fiber Articles about LightTransmission for Video, Audio, Data using Analog Digital L-Band HDTV 1080 and more - Fiber-Optics.info
The CATV industry has responded to the demand of interactive, real-time, two-way television programming with return pathtechnology. Return path management allows the viewer to send information from a transmitter located within the set-top-box(STB) located in the viewer's home to the headend with the touch of a few buttons on the television remote. This advancement came from the design of the hybrid fiber coax (HFC) networks that meet the demands of increased transmission distances required for today's cable television. Return path management is prevalent in digital broadcast systems (DBS), such as Directv and Dish Network. Typical HFC networks, illustrated in Figure 1, use coaxial cable for shorter transmission lengths between video equipment and the transmitter, or the receiver and the cable customer's television, while the path between the transmitter and the receiver uses single-mode (SM) fiber to extend transmission distances. Even in limited distance applications, this combination allows the system designer to use the lower cost solution for each portion of the network. In return path HFC networks, illustrated in Figure 2, the same system design principle applies, but now there is bidirectional transmission between the viewer location and the headend allowing for the interactive return path management. The signals from the headend are transported over SM fiber using either a 1310 nm or 1550 nm distributed feedback laser (DFB) or Fabry Perot (FP) transmitters. The receiver contains a return path laser that sends the viewer-sent signals back to the headend. Currently, wavelength-division multiplexing technologies, such as DWDM and CWDM, increase the transmission distance and system reliability.
The CATV industry has responded to the demand of interactive, real-time, two-way television programming with return pathtechnology. Return path management allows the viewer to send information from a transmitter located within the set-top-box(STB) located in the viewer's home to the headend with the touch of a few buttons on the television remote. This advancement came from the design of the hybrid fiber coax (HFC) networks that meet the demands of increased transmission distances required for today's cable television. Return path management is prevalent in digital broadcast systems (DBS), such as Directv and Dish Network. Typical HFC networks, illustrated in Figure 1, use coaxial cable for shorter transmission lengths between video equipment and the transmitter, or the receiver and the cable customer's television, while the path between the transmitter and the receiver uses single-mode (SM) fiber to extend transmission distances. Even in limited distance applications, this combination allows the system designer to use the lower cost solution for each portion of the network. In return path HFC networks, illustrated in Figure 2, the same system design principle applies, but now there is bidirectional transmission between the viewer location and the headend allowing for the interactive return path management. The signals from the headend are transported over SM fiber using either a 1310 nm or 1550 nm distributed feedback laser (DFB) or Fabry Perot (FP) transmitters. The receiver contains a return path laser that sends the viewer-sent signals back to the headend. Currently, wavelength-division multiplexing technologies, such as DWDM and CWDM, increase the transmission distance and system reliability.
Technoglitch
Core Member
The return-path or upstream signals carry information from the home to the headend/hub office, such as control signals to order a movie or internet data to send an email. The forward-path and the return-path are actually carried over the same coaxial cable in both directions between the optical node and the home.
IndianMascot
Core Member
So, Tata Sky VOD can be termed as Return Path service.
Technoglitch
Core Member
yes. TS service can be termed as return path service along with adtv too.