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- Number of terms: 20560
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- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Private Conditional Access information which specifies the authorization levels or the services of specific decoders. They may be addressed to an individual decoder or groups of decoders.
Industry:Entertainment
Variable-length lossless coding of the digital representation of a signal to reduce redundancy.
Industry:Entertainment
In video, entropy, the average amount of information represented by a symbol in a message, is a function of the model used to produce that message and can be reduced by increasing the complexity of the model so that it better reflects the actual distribution of source symbols in the original message. Entropy is a measure of the information contained in a message, it’s the lower bound for compression.
Industry:Entertainment
The point where an edit will start (this will normally be displayed on the editor screen in time code).
Industry:Entertainment
The point in a coded bit stream after which the decoder can be initialized and begin decoding correctly. The picture that follows the entry point will be an I-picture or a P-picture. If the first transmitted picture is not an I-picture, the decoder may produce one or more pictures during acquisition. Also referred to as an Access Unit (AU).
Industry:Entertainment
The term “Envelope Delay” is often used interchangeably with Group Delay in television applications. Strictly speaking, envelope delay is measured by passing an amplitude-modulated signal through the system and observing the modulation envelope. Group Delay, on the other hand, is measured directly by observing phase shift in the signal itself.
Since the two methods yield very nearly the same result in practice, it is safe to assume the two terms are synonymous.
Industry:Entertainment
A demodulation process in which the shape of the RF envelope is sensed. This is the process performed by a diode detector.
Industry:Entertainment
A form of device in a television set that begins the process of converting a broadcast or CATV television signal into a video signal that can be displayed. Envelope detectors are sensitive to some of the modifications to television signals that have been proposed for receiver-compatible ATV systems.
Industry:Entertainment
a) Process of altering the frequency response of a video amplifier to compensate for high-frequency losses in coaxial cable.
b) The selective amplification or attenuation of certain frequencies.
Industry:Entertainment
