Descramble in Cable television

Cable television

Cable television is a system of providing television programs to consumers via radio frequency signals transmitted to televisions through coaxial cables or digital light pulses through fixed optical fibers located on the subscriber's property, much like the over-the-air method used in traditional...

 context is the act of taking a scrambled or encrypted Video Signal one that has been processed by a scrambler

Scrambler

In telecommunications, a scrambler is a device that transposes or inverts signals or otherwise encodes a message at the transmitter to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device...

 and provided by a Cable Television company for Premium television services and is then supplied over a Coaxial cable

Coaxial cable

Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by a tubular conducting shield. The term coaxial comes from the inner conductor and the outer shield sharing the same geometric axis...

 and delivered to the household where a Set-top box

Set-top box

A set-top box or set-top unit is an information appliance device that generally contains a tuner and connects to a television set and an external source of signal, turning the signal into content which is then displayed on the television screen or other display device.-History:Before the...

 reprocesses the signal, thus descrambling it making it available for viewing on the Television

Television

Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...

 set. A descrambler is a device that restores the picture and sound of a scrambled channel. A descrambler must be used with a Cable converter box

Cable converter box

A cable converter box or television converter box is an electronic tuning device that transposes/converts any of the available channels from a cable television service to an analog RF signal on a single channel, usually VHF channel 3 or 4. The device allows a television set that is not “cable...

 to be able to unencrypt all the premium & pay-per-view channels of a Cable Television System.

See also

• Business Support Systems
  Business Support Systems
  Business support systems are the components that a telephone operator or telco uses to run its business operations towards customer. BSS and OSS platforms are linked in the need to support various end to end services...
  
  
• Operations Support System
  Operations support system
  Operations support systems are computer systems used by telecommunications service providers. The term OSS most frequently describes "network systems" dealing with the telecom network itself, supporting processes such as maintaining network inventory, provisioning services, configuring network...
  
  
• Cable television headend
  Cable television headend
  A cable television headend is a master facility for receiving television signals for processing and distribution over a cable television system. The headend facility is normally unstaffed and surrounded by some type of security fencing and is typically a building or large shed housing electronic...
  
  
• Set-top box
  Set-top box
  A set-top box or set-top unit is an information appliance device that generally contains a tuner and connects to a television set and an external source of signal, turning the signal into content which is then displayed on the television screen or other display device.-History:Before the...
  
  
• Scrambler
  Scrambler
  In telecommunications, a scrambler is a device that transposes or inverts signals or otherwise encodes a message at the transmitter to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device...
  
  
• Descrambler
• encryption
  Encryption
  In cryptography, encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information...
  
  
• Provisioning
  Provisioning
  In telecommunication, provisioning is the process of preparing and equipping a network to allow it to provide services to its users. In NS/EP telecommunications services, "provisioning" equates to "initiation" and includes altering the state of an existing priority service or capability.In a...
  
  
• conditional access system
• One-time pad
  One-time pad
  In cryptography, the one-time pad is a type of encryption, which has been proven to be impossible to crack if used correctly. Each bit or character from the plaintext is encrypted by a modular addition with a bit or character from a secret random key of the same length as the plaintext, resulting...
  
  
• Voice inversion
  Voice inversion
  Voice Inversion scrambling is an analog method of obscuring the content of a transmission. It sometimes used in public service radio, automobile racing, cordless telephones and the Family Radio Service. Without a descrambler, the transmission makes the speaker sound like "Donald Duck"...
  
  
• Addressable Systems
  Addressable Systems
  Addressability is the ability of a digital device to individually respond to a message sent to many similar devices. Examples include pagers, mobile phones, and set-top boxes for pay TV. Computer networks are also addressable, such as via the MAC address on Ethernet network cards, and similar...
  
  
• Addressability

Related Technologies:

• ATSC tuner
  ATSC tuner
  An ATSC tuner, often called an ATSC receiver or HDTV tuner is a type of television tuner that allows reception of digital television television channels transmitted by television stations in North America, parts of Central America and South Korea that use ATSC standards...
  
  
• Audio
• Cable modem
  Cable modem
  A cable modem is a type of network bridge and modem that provides bi-directional data communication via radio frequency channels on a HFC and RFoG infrastructure. Cable modems are primarily used to deliver broadband Internet access in the form of cable Internet, taking advantage of the high...
  
  
• Connectivity: RS-232
  RS-232
  In telecommunications, RS-232 is the traditional name for a series of standards for serial binary single-ended data and control signals connecting between a DTE and a DCE . It is commonly used in computer serial ports...
  
  , USB, Bluetooth
  Bluetooth
  Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...
  
   and Wi-Fi
  Wi-Fi
  Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...
  
  
• Digital television adapter
  Digital television adapter
  A digital television adapter , or digital-to-analog converter [set-top box], or commonly known as a converter box, it is a television tuner that receives a digital television transmission, and converts the digital signal into an analog signal that can be received and displayed on an analog...
  
   (DTA)
• DOCSIS
  DOCSIS
  Data Over Cable Service Interface Specification is an international telecommunications standard that permits the addition of high-speed data transfer to an existing cable TV system...
  
  
• DVB
• Free-to-air
  Free-to-air
  Free-to-air describes television and radio services broadcast in clear form, allowing any person with the appropriate receiving equipment to receive the signal and view or listen to the content without requiring a subscription or one-off fee...
  
  
• Integrated Services Digital Broadcasting
• Interactive television
  Interactive television
  Interactive television describes a number of techniques that allow viewers to interact with television content as they view it.- Definitions :...
  
  
• IPTV
  IPTV
  Internet Protocol television is a system through which television services are delivered using the Internet protocol suite over a packet-switched network such as the Internet, instead of being delivered through traditional terrestrial, satellite signal, and cable television formats.IPTV services...
  
  
• QAM tuner
  QAM tuner
  QAM stands for quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers...
  
  
• QPSK
• Satellite dish
  Satellite dish
  A satellite dish is a dish-shaped type of parabolic antenna designed to receive microwaves from communications satellites, which transmit data transmissions or broadcasts, such as satellite television.-Principle of operation:...
  
  
• Symbol rate
  Symbol rate
  In digital communications, symbol rate is the number of symbol changes made to the transmission medium per second using a digitally modulated signal or a line code. The Symbol rate is measured in baud or symbols/second. In the case of a line code, the symbol rate is the pulse rate in pulses/second...