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  2. Compression artifact - Wikipedia

    en.wikipedia.org/wiki/Compression_artifact

    The lower the bit rate, the more coarsely the coefficients are represented and the more coefficients are quantized to zero. Statistically, images have more low-frequency than high-frequency content, so it is the low-frequency content that remains after quantization, which results in blurry, low-resolution blocks. In the most extreme case only ...

  3. TV tuner card - Wikipedia

    en.wikipedia.org/wiki/TV_tuner_card

    The ATI Twin Wonder TV tuner card. A TV tuner card is a kind of television tuner that allows television signals to be received by a computer. Most TV tuners also function as video capture cards, allowing them to record television programs onto a hard disk much like the digital video recorder (DVR) does. A DVB-S2 tuner card D-Link external TV tuner

  4. Analog television - Wikipedia

    en.wikipedia.org/wiki/Analog_television

    The reproduced images from these mechanical systems were dim, very low resolution and flickered severely. Analog television did not begin in earnest as an industry until the development of the cathode-ray tube (CRT), which uses a focused electron beam to trace lines across a phosphor coated surface. The electron beam could be swept across the ...

  5. Nominal level - Wikipedia

    en.wikipedia.org/wiki/Nominal_level

    In audio, a related measurement, signal-to-noise ratio, is usually defined as the difference between the nominal level and the noise floor, leaving the headroom as the difference between nominal and maximum output. [1] [2] The measured level is a time average, meaning that the peaks of audio signals regularly exceed the measured average level.

  6. Low-noise block downconverter - Wikipedia

    en.wikipedia.org/wiki/Low-noise_block_downconverter

    The low-noise quality of an LNB is expressed as the noise figure (or sometimes noise temperature). This is the signal-to-noise ratio at the input divided by the signal-to-noise ratio at the output. It is typically expressed as a decibels (dB) value. The ideal LNB, effectively a perfect amplifier, would have a noise figure of 0 dB and would not ...

  7. Insignia Systems - Wikipedia

    en.wikipedia.org/wiki/Insignia_Systems

    Insignia POPS is a sign placed at the shelf, primarily in grocery stores, that contains brand messaging, brand graphics and price. [12] According to the company, the Insignia POPS Program has access to more than 23,000 stores across the United States through their own retailer network and other business relationships. [ 13 ]

  8. Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction

    Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.

  9. Batman: Arkham Knight - Wikipedia

    en.wikipedia.org/wiki/Batman:_Arkham_Knight

    Batman: Arkham Knight is a 2015 action-adventure game developed by Rocksteady Studios and published by Warner Bros. Interactive Entertainment.Based on the DC Comics superhero Batman, it is the successor to the 2013 video game Batman: Arkham Origins, a direct sequel to Batman: Arkham City (2011) and the fourth main installment in the Batman: Arkham series.