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Mike Izquierdo

Mike Izquierdo's Public Library

  • Ultra HD Blu-ray is a separate media format from traditional Blu-ray. They're technically very similar, but are completely distinct in execution. They're both optical discs that use 405nm "blue" lasers for reading and writing data. However, regular Blu-rays range from 25GB to 50GB and can only contain up to 1080p video. Ultra HD Blu-rays start at 33GB and can go up to 100GB. They also have proportionally higher data transfer rates, ranging from 82 to 128 megabits per second compared with standard Blu-ray discs' 54Mbps.

  • As an alternative to the full-fledged port, the SuperMHL protocol could also be slapped on the versatile USB Type-C cable. But the data transfer rate will be much lower, which could affect the frames per second and color depth.

  • One measurement system uses a special test signal that synchronizes a video "flash" and audio tone burst.

  • In 1998, ITU-R published BT.1359, recommending the relative timing of sound and vision for broadcasting. Studies by the ITU and the others have suggested that thresholds of timing for viewer detection are about +45ms to -125ms, and the thresholds of acceptability are about +90ms to -185ms. In addition, the ATSC Implementation Subcommittee IS-191 has found that under all operational situations, the sound program should never lead the video program by more than 15ms and should never lag the video program by more than 45ms ±15ms.

  • We note that the signal is first convoluted with the filter bank and then subsampled. In other words, only half the samples are kept, with the other half of the filtered samples thrown away. Clearly this is not efficient, and it would be better to do the subsampling before the filtering operation. This leads to an alternative implementation of the wavelet transform termed lifting approach. It turns out that all FIR wavelet filters can be factored into lifting step.

  • Industry insiders have told HD Guru that the specification-setting process has dragged on through much of the year, in part, because of disagreements over HDR brightness ranges between LED LCD TV manufacturers and LG and OLED component suppliers, which are championing the needs of OLED TV technology.
  • Industry insiders have told HD Guru that the specification-setting process has dragged on through much of the year, in part, because of disagreements over HDR brightness ranges between LED LCD TV manufacturers and LG and OLED component suppliers, which are championing the needs of OLED TV technology.
  • Therefore, the two technologies come at HDR from different directions. OLED starts at black and works up 14 to 15 camera f-stops of light (steps of increasing brightness) in the HDR spectrum. LED TVs start at maximum brightness they can generate and work down the 15 stops to the lowest level of black they can achieve.

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  • HEVC Advance no longer plans to levy usage fees on any free-to-air (FTA) broadcast content, from both commercial and non-commercial channels. Freely distributed HEVC-encoded content on the Internet will also be free from licensing fees.
  • It is further understood that FTA broadcaster content delivered via HEVC to cable or other redistributors, but then transcoded by the redistributor to another codec for delivery to end users, will not be subject to any HEVC Advance usage royalty assessed to the FTA broadcaster or the redistributor.
  • For device royalties, the HEVC Main, Main Still and Main 10 profiles are included in the basic royalty rate, but advanced profiles (including the scalable variant technology known as SHVC) and optional features (such as SEI messages) are subject to additional assessments.

  • It features a proprietary IP-based network topology, which allows it to operate as a standalone system, transmitting the HDMI signal to distances up to 120 meters over a single Ethernet cable*.
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