Earlier this year, HDMI standard management body HMDI LA released HDMI 2.1a standard specification. The new HDMI 2.1a standard specification will add a feature called SOURce-based Tone Mapping (SBTM) to allow SDR and HDR content to be displayed in different Windows simultaneously to optimize the HDR display effect for a better user experience. At the same time, many existing devices can support SBTM function through firmware update. Now HMDI LA has officially announced that it is upgrading the HDMI 2.1A standard to introduce a very practical feature. In the future, the new Cable will support “HDMI Cable Power” technology to obtain Power supply capability. It can strengthen the power supply of source equipment and improve the stability of long-distance transmission. A simple point, can be understood as based on the “HDMI Cable Power” technology, the active active HDMI data line can obtain greater Power supply capacity from the source equipment, even if it is a few meters long HDMI data line, no longer need additional Power supply, become more convenient.
“We know that the longer the cable, the more difficult it is to guarantee the stability of the signal, and HDMI 2.1 standard data transmission speed of 48 Gbps makes this problem more obvious.” The addition of HDMI Cable Power technology not only enables the Power supply capability of HDMI data lines, but also improves the stability of long-distance data transmission, provided that both the source device and the receiving device support this function. In addition, the new cable can only be connected in one direction, one end will be marked for the source device, and the other end must be for the receiving device. If the connection is wrong, the device will not be damaged, but it will not be connected. HDMI data cables with “HDMI Cable Power” technology include a separate Power connector for source devices that do not support the technology, usually these connectors are USB Micro or USB Type-C ports. As more and more source devices add support for “HDMI Cable Power” technology, making it easier for users to build convenient and reliable home theater
HDMI chip
When using equipment and cables that support Cable Power, only one end of the Cable can be plugged into the source device, which is the end used to receive additional Power. But even if you turn it upside down, there’s no harm to the device, but the cable doesn’t transmit any signal at all. Getting the ends of cables correctly oriented will be important for those considering using them inside walls or other confined Spaces. If you buy a new device that supports Cable Power, you don’t have to use a Cable that supports Cable Power in normal use, the new port is backward compatible, and your existing HDMI cables can still do what they always do. Conversely, if you decide to buy a Cable that supports Cable Power, but you don’t yet own any Cable Power equipment, this is also ok. Cables that support Cable Power come with separate Power connectors, so they can be powered with a 5-volt USB adapter (usually micro-USB or USB Type-C) so they work, but when you eventually upgrade your signal source equipment to support Cable Power, Will be able to do away with the USB power adapter, installation is naturally much simpler. If this sounds a lot like RedMere technology, some HDMI cables are used to get a little extra power from the source device to allow running over longer distances — that’s because it’s a very similar idea. The difference is that the RedMere cable cannot collect enough power to allow the extension of the full bandwidth of the ultra-high speed cable. Like Cable Power’s idea, but want to buy something new without spending money? Unfortunately that is unlikely, a spokesman for the HDMI Licensing Authority said, because Cable Power would need to install chips in the source devices, which would need to be made specifically for that function, and the HDMI chip story would begin
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Post time: Aug-16-2022
