Digital Cable TV Equipment
Headends | IRD | Encoders | Decoders | Transmodulators | IPTV | EDGE QAM | SMS & CAS | Channel insertion
The headend is the master distribution center of a CATV system by which incoming television signals from video sources (e.g., DBS satellites, local studios, video players) are received, selected, amplified, and re-modulated onto TV channels for transmission down the CATV system.
QAM stands for quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers. QAM is used in a variety of communications systems such as Dial-up modems and Wi Fi. In cable systems, a QAM tuner is linked to the cable in a manner that is equivalent to an ATSC tuner which is required to receive over-the-air (OTA) digital channels broadcast by local television stations when attached to an antenna. Most new HDTV digital televisions support both of these standards.
The DEXIN NDS3224A 8 in 1 MPEG-2 H.264 SD Encoder is our newest professional SD audio & video encoding and multiplexing device with powerful functionality. It has 8 independent channels of unbalanced audio &video input interfaces, supporting MPEG-2 and H.264 encoder type. Furthermore, it can support the MPEG-1 Audio layer 2, LC-ACC, HE-AAC, and each channel can support ultra low bit-rate (0.25~15Mbps for H.264 encoding, and 0.5~15Mbps for MPEG-2 encoding). Moreover, it has an ASI input and can multiplex the input TS with the 8 encoded SPTS to generate a MPTS output,and users can select the MPTS and 8SPTS through the front panel operation.
SMS AND CAS
Multivirt partners with companies around the world to provide effective solutions to its customers for their subsciber management and billing solutions. The products are recommended based upon the subscriber base and budget of the clients.
Set Top Box
A set-top box(STB)is an information appliance device that generally contains a TV-tuner input and displays output connects to a television set and an external source of signal, turning the source signal into content in a form that can then be displayed on the television screen or other display device. They are used in cable television, satellite television, and over-the-air television systems, as well as other uses.
HD EncodulatorTM is professional Video / Audio Encoder which has DTV broadcasting modulator using AV compression and digital modulation technologies. MPEG-2 / H.264 technologies were supported for Video compression and MP1L2 / AC3 / AAC / HE-AAC technologies were supported for Audio compression. For the video input, this product has HDMI, HD-SDI, Component ports and HDMI, HD-SDI, Analog Stereo Audio(L/R), SPDIF(optical/coaxial) and AES/EBU for audio input. And for the encoder and modulation output, this product has ASI and Ethernet ports and RF output port.
Integrated Receiver Decoder(IRD)
An integrated receiver/decoder (IRD) is an electronic device used to pick up a radio-frequency signal and convert digital information transmitted in it.
Receives and decodes incoming video and media channels.
Off Air Receivers
Receives, selects, and demodulates local broadcast channels.