answersLogoWhite

0

Strictly speaking, there is no such thing as a live television broadcast now we have moved to digital broadcasting. In the days of analog television, a signal was captured, processed and broadcast without delays. The final delay was the time taken for signals to be sent over wires or radio links which happens at about the speed of light.

In digital broadcasting, a complete frame or field is captured by a camera before being sent to a vision mixer (or switcher). The switcher typically delays the image by one or two frames while it is processed. Each device that handles the signal will normally store a frame, process it and send it on so adding another frame of delay.

By the time the signal is ready for broadcast, it is compressed. The compression process can add several frames, perhaps up to 15 or 20 to the total delay. A television receiver will take a similar number of frames of delay to un-compress a signal and display it. Where analog and digital broadcasts are still used side by side, watching both side by side will show the compression and de-compression delay quite clearly with the digital television lagging behind the analog by a second or more.

For remote events, links from one country to another add anything up to a second or two of delay in the signal as well.

From the time the event happens to the time it is seen on a television screen at home, the total delay can be several seconds. Therefore, what you see as a live event can be 5 seconds out of date.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

Use lapse in a sentence?

There was a lapse in time between the beginning and end of the experiment.


What is the difference between the normal lapse rate and the environmental lapse rate?

The environmental lapse rate (ELR), is the rate of decrease of temperature with altitude in the stationary atmosphere at a given time and location.While Normal Lapse Rate is average concept for temperature decline with height in the troposphere.


How do you play time lapse in the game brain age?

In time lapse, you must write how much time has passed between the two clocks


When the environmental lapse rate is between the dry and moist adiabatic lapse rates conditions are described as what?

When the environmental lapse rate is between the dry and moist adiabatic lapse rates, conditions are described as conditionally unstable. This means that the atmosphere is stable when unsaturated and unstable when saturated, indicating the potential for convective storms to develop under the right conditions.


What is old is to freezing as lapse is to?

warmth - the relationship between "old" and "freezing" suggests a connection between aging and extreme cold temperatures, similarly, the relationship between "lapse" and "warmth" denotes a connection between a passage of time and a pleasant, comfortable feeling of heat.


What is the homophone for lapse?

The homophone for lapse is laps.


What is the plural of lapse?

Lapses is the plural of lapse.


What is a homonym for laps?

lapse


What is the difference between ethical dilemma and ethical lapse?

You face an ethical dilemma when you must choose between two or more conflicting alternatives that both seem valid and ethical. An ethical lapse, on the other hand, occurs when you make a choice that is clearly unethical and or illegal. An ethical dilemma can lead to an ethical lapse but doesn't necessarily do so.


What is the time lapse between 340 AM and 2 PM?

10 hours and 20 minutes


What is a homophone for laps?

Lapse is a homophone for laps.


What is the plural for lapse?

The plural form of "lapse" is "lapses."